CN201236655Y

CN201236655Y - Rotation type pipe cutter

Info

Publication number: CN201236655Y
Application number: CNU2008200145903U
Authority: CN
Inventors: 霍春林; 霍春山; 马占友
Original assignee: FUXIN CHIYU PETROLEUM MACHINERY Co Ltd
Current assignee: FUXIN CHIYU PETROLEUM MACHINERY Co Ltd
Priority date: 2008-08-05
Filing date: 2008-08-05
Publication date: 2009-05-13
Anticipated expiration: 2018-08-05

Abstract

The utility model belongs to tools used for oil field well drilling and repairing operation, and in particular relates to a rotary pipe cutter which comprises a casing (2), an upper cover (9), a motor seat (17), a motor (19), a ball bearing (12), an angle joint ball bearing (14) and a lower flange (1); a rotary gear ring (6) provided with inner and outer teeth is mounted on the bottom surface inside the casing (2); a cylindrical roller (5) is mounted on the lower surface outside the rotary gear ring (6); a cutter head (7) is arranged inside the rotary gear ring (6) and is articulated with a tool rest (26); an intermediate wheel axle (22) and an intermediate wheel axle (23) are symmetrically mounted on the cutter head; and an intermediate wheel (21) is mounted on the intermediate wheel axle (22), while an intermediate wheel (24) is mounted on the intermediate wheel axle (23). The rotary pipe cutter has the advantages of avoiding the deformation of the cutting end face of an oil pipe, creating favorable conditions for reconditioning the cut-off area of the oil pipe, and facilitating anchor fishing and re-fishing inside the oil pipe.

Description

Rotary pipe cutter

Technical field

The utility model belongs to oil field brill, workover treatment instrument, particularly a kind of rotary pipe cutter.

Background technology

At present, the employed instrument of cutting oil pipe normally is with preventer and is cut flashboard in oil field brill, the workover treatment process, scissors moves along the oil pipe radial alignment, shears the fracture sectional dimension of back oil pipe and dwindles distortion, can't use to drag for anchor in the oil pipe and salvage once more.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of rotary pipe cutter of avoiding the distortion of oil pipe cutting rear end face is provided.

The technical scheme that the utility model technical solution problem adopts is: rotary pipe cutter comprises housing, loam cake, the motor seat, motor, ball bearing, the corner connection ball bearing, lower flange, O-ring seals, the axle sealing ring, hex bolts, soket head cap screw, be characterized on the housing inner bottom surface, adorning the rotation gear ring of external tooth in the band, dress cylindrical roller below outside the rotation gear ring, in the rotation gear ring, cutterhead is housed, the cutterhead strand connects knife rest, symmetry is adorned two axle of carrier pulley one on cutterhead, axle of carrier pulley two, dress idle wheel one on axle of carrier pulley one, idle wheel two is housed on axle of carrier pulley two, idle wheel two and gear shaft engagement are equipped with blade on the knife rest; Driving gear and the engagement of rotation gear ring are housed below in housing, and driving gear is contained in the motor top with flat key, and motor is contained in the motor seat; Between lower flange and housing, piston is housed, friction plate is housed above the piston.

The beneficial effects of the utility model are: rotary pipe cutter is the rotation cutting oil pipe by blade, avoid the cut end facial disfigurement of oil pipe, handle again to create for the oil pipe place of incision and make things convenient for condition, can make things convenient for and carry out dragging for anchor in the oil pipe smoothly and salvage once more.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 is that rotary pipe cutter structure master looks sectional view.

Fig. 2 is that the P of Fig. 1 is to view.

Among the figure, the 1-lower flange; The 2-housing; The 3-piston; The 4-friction plate; The 5-cylindrical roller; 6-rotates gear ring; The 7-cutterhead; The 8-hex bolts; The 9-loam cake; The 10-steel ball; 11-O shape sealing ring; The 12-ball bearing; The 13-driving gear; 14-corner connection ball bearing; 15-axle sealing ring; The 16-soket head cap screw; 17-motor seat; The 18-flat key; The 19-motor; 20-is by pipe cutting; 21-idle wheel one; 22-axle of carrier pulley one; 23-axle of carrier pulley two; 24-idle wheel two; The 25-blade; The 26-knife rest; The 27-gear shaft;

The specific embodiment

Embodiment, with reference to accompanying drawing 1,2, the rotation gear ring 6 of external tooth in the dress band on housing 2 bottom surfaces of rotary pipe cutter, cylindrical roller 5 is equipped with at rotation gear ring 6 places of getting out of a predicament or an embarrassing situation, rotation gear ring 6 and driving gear 13 engagements, driving gear 13 usefulness flat keys 18 are contained on motor 19 upper shafts, and motor 19 is contained in the motor seat 17 and with axle and seals with sealing ring 15.Motor seat 17 usefulness soket head cap screws 16 are fixed on housing 2 bottom surfaces, corner connection ball bearing 14. driving gears 13 places of topping bar are housed at driving gear 13 places of getting out of a predicament or an embarrassing situation ball bearing 12 is housed.In housing 2 lower ends lower flange 1 is housed, piston 3 is housed between in lower flange 1 and housing 2, friction plate 4 is equipped with in piston 3 upper ends, between piston 3 and the shell 2 with O-ring seals 11 sealings.Cutterhead 7 is housed in rotation in the gear ring 6, deserves to be called 7 pairs of cutterheads two axle of carrier pulley 1 are housed, on axle of carrier pulley 1, below the cutterhead 7, two idle wheels 1 are housed, the internal tooth engagement of idle wheel 1 and rotation gear ring 6.Dress axle of carrier pulley 2 23 below idle wheel 1, dress idle wheel 2 24 on the axle of carrier pulley 2 23, idle wheel 2 24 and gear shaft 27 engagements, knife rest 26 is housed below axle of carrier pulley 1, blade 25 is housed on knife rest 26, steel ball 10 is housed above cutterhead 7, loam cake 9 is housed on steel ball 10, loam cake 9 usefulness hex boltss 8 are fixed on the housing 2.Seal with O-ring seals 11 between loam cake 9 and the housing 2.

The action of rotary pipe cutter is achieved in that under the rotary power that motor 19 provides driving gear 13 drives gear ring 6 rotations.In rotary course, gear ring 6 is by driving cutterheads 7 whole rotations with the hinged knife rest 26 of cutterhead 7, be connected with idle wheel 1, idle wheel 2 24 and Pipe Cutting blade 25 on the knife rest 26, and idle wheel 1 and the internal tooth engagement of rotating gear ring 6, the relative rotation of cutterhead 7 and rotation gear ring 6 drives blade 25 rotation Pipe Cuttings 20.Inject hydraulic oil to piston 3 cavity of resorptions, make piston 3 rising pressing friction sheets 4 and cutterhead 7 produce frictional resistance, utilize frictional resistance to be connected and make cutterhead 7 rotational hysteresises with the spline of cutterhead 7, knife rest 26 inwardly rotates, blade 25 compresses oil pipe 20 and produces cutting action, along circumferential feeding oil pipe 20 is cut off simultaneously.

Claims

1, a kind of rotary pipe cutter, comprise housing (2), loam cake (9), motor seat (17), motor (19), ball bearing (12), corner connection ball bearing (14), lower flange (1), O-ring seals (11), axle sealing ring (15), hex bolts (8), soket head cap screw (16), it is characterized in that on housing (2) inner bottom surface, adorning the rotation gear ring (6) of external tooth in the band, dress cylindrical roller (5) below outside rotation gear ring (6), in rotation gear ring (6), cutterhead (7) is housed, cutterhead (7) strand connects knife rest (26), go up symmetry at cutterhead (7) and adorn two axle of carrier pulley one (22), axle of carrier pulley two (23), go up dress idle wheel one (21) at axle of carrier pulley one (22), idle wheel two (24) is housed on axle of carrier pulley two (23), idle wheel two (24) and gear shaft (27) engagement are equipped with blade (25) on the knife rest (26); Driving gear (13) and rotation gear ring (6) engagement are equipped with in the below in housing (2), and driving gear (13) is contained in motor (19) top with flat key (18), and motor (19) is contained in the motor seat (17); Between lower flange (1) and housing (2), piston (3) is housed, friction plate (4) is housed above the piston (3).