CN2138115Y

CN2138115Y - Dual regulating mechanic lift

Info

Publication number: CN2138115Y
Application number: CN 92214936
Authority: CN
Inventors: 张发祥
Original assignee: EAST-SICHUAN DRILLING Co SICHUAN PETROLEUM ADMINISTRATION
Current assignee: EAST-SICHUAN DRILLING Co SICHUAN PETROLEUM ADMINISTRATION
Priority date: 1992-07-07
Filing date: 1992-07-07
Publication date: 1993-07-14
Anticipated expiration: 2002-07-07

Abstract

The utility model discloses a dual regulating mechanic lift, comprising a base, a coarse adjustment threaded rod, a load-bearing disk, a rising and falling sleeve, a fine adjustment thread sleeve, a fine adjustment hand wheel, and a bearing. The utility model has the advantages of simultaneous coarse adjustment and fine adjustment, small working gap, large bearing capacity of unit self weight, and reliable working, which can be used for the work of drilling oilfield, rising and falling weight, constructing bridges and buildings, and manufacturing and repairing the automobiles, ships, airplanes, and ordinary machinery.

Description

Dual regulating mechanic lift

The utility model belongs to mechanical work and recovery equipment technical field.

In mechanical work with in repairing, carrying and lifting weight generally use hydraulic jack and mechanical jack.But hydraulic jack is because may be malfunctioning because of oil leakage fault in carrying, and the mechanical jack that uses at present, the working clearance is big, can not carry out fine tuning, during the carrying weight, light-duty jack can not bear, the general manpower of heavy jack is difficult to move, and from great, carrying and use inconvenience.

The purpose of this utility model is to provide a kind of unit deadweight bearing capacity big, reliable operation, and the working clearance is little, not only can carry out coarse adjustment but also can carry out sharply tuned mechanical jack.

The utility model comprises base 1, lower cover 2, carrier 3, confinement block 4, coarse adjustment screw rod 5, lifting cover 6, feather key 7, fine tuning swivel nut 8, fine tuning handwheel 9, handwheel key 10, lower bearing 11, head bearing 12, upper ball cover 13, tightening screw 14.Fig. 1 is its section of structure.Base 1 is the housing of jack, and bears load.Lower cover 2 is contained in the bottom of base 1 with the screw thread combination.Coarse adjustment screw rod 5 is loaded on the central authorities of base 1.Coarse adjustment screw rod 5 is combined as a whole with carrier 3, can adopt force fit, and also can be processed as the square-section to the top of coarse adjustment screw rod 5 has the carrier 3 of square opening to combine with central authorities.Limited clamp dog 4 on the carrier 3, the displacement of loads in order to prevent.On the inner working face of the outer driving surface of coarse adjustment screw rod 5 and lifting cover 6, motion thread is arranged all, the two is the screw thread combination, and coarse adjustment screw rod 5 can overlap in 6 in lifting and rotate and lifting, rotates and lifting thereby drive carrier 3, is coarse adjustment.On the outer driving surface of lifting cover 6 and the inner working face of fine tuning swivel nut 8, motion thread is arranged all, the two is the screw thread combination.On the outer driving surface of lifting cover 6, there is one to pass through groove up and down, the feather key 7 that is installed on the base 1 promptly is embedded in this groove, makes the lifting cover 6 can only up-and-down movement and can not rotate.Handwheel key 10 is embedded in the upper end of fine tuning swivel nut 8, and fine tuning handwheel 9 relies on handwheel key 10 to combine with fine tuning swivel nut 8, and porose and groove on the fine tuning handwheel 9 can insert boosting-rod and drive wrench.Lower bearing 11 is a loading bearing, and head bearing 12 is an alignment bearing, be loaded on respectively fine tuning swivel nut 8 flange following and above, fine tuning swivel nut 8 can only rotate and can not up-and-down movement.Rotate fine tuning handwheel 9, promptly fine tuning swivel nut 8 is rotated, thereby make lifting cover 6 drive coarse adjustment screw rod 5 and carrier 3 up-and-down movements, be fine tuning by screw thread by handwheel key 10.Upper ball cover 13 is contained on the head bearing 12, and fastening with tightening screw 14.

But but the utility model has the advantages that the lifting not only coarse adjustment but also fine tuning of carrier, each parts can be worked into has higher precision, and the working clearance is little, and the bearing capacity of unit deadweight is big, promptly pins voluntarily after the carrying, can not fall, and it is very reliable to work.Can make the specification that varies in size as required, be used for the field drilling operation, the lifting of weight, bridge and building operation, the manufacturing of car and boat aircraft and common mechanical and repairing replace used hydraulic jack and mechanical jack, and be of many uses.

The utility model is implemented by the applicant, tries out in the oil gas well drilling cement job, has replaced the use pad post always used till today and the technology of cushion block well cementation, simplified construction, saved a large amount of equipment and worker and executed expense, easy to operate, respond well, be subjected to the welcome of operating personal deeply, in an embodiment, external diameter is 280mm, overall height (comprising carrier) 300mm, but lift is from 200mm, conduct oneself with dignity 100 kilograms, 140 tons of load-carrying capacitys, when load-carrying is 140 ton hours, the promptly rotatable fine tuning swivel nut of two people.

Claims

1, a kind of mechanical jack is characterized in that comprising base 1, lower cover 2, carrier 3, confinement block 4, coarse adjustment screw rod 5, lifting cover 6, feather key 7, fine tuning swivel nut 8, fine tuning handwheel 9, handwheel key 10, lower bearing 11, head bearing 12, upper ball cover 13, tightening screw 14; Coarse adjustment screw rod 5 is loaded on the central authorities of base 1, and coarse adjustment screw rod 5 is combined as a whole with carrier 3, and confinement block 4 is contained on the carrier 3; On the inner working face of the outer driving surface of coarse adjustment screw rod 5 and lifting cover 6 motion thread is arranged, the two is with the screw thread combination; On the driving surface of lifting cover 6 and the inner working face of fine tuning swivel nut 8 motion thread is arranged, the two is with the screw thread combination; Be contained in one that feather key 7 on the base 1 is embedded on the outer driving surface of lifting cover 6 and pass through in the groove up and down, the groove of lifting cover 6 can slide up and down along feather key 7; Handwheel key 10 is embedded in the upper end of fine tuning swivel nut 8, and fine tuning handwheel 9 combines with handwheel key 10 and fine tuning swivel nut 8; Lower bearing 11 and head bearing 12 be contained in fine tuning swivel nut 8 flange following and above.