The mechanism for lowering and lifting a continuous steel pipe
(57) Abstract:The invention relates to the field of operation and servicing of oil wells using a continuous steel pipes and rods. The mechanism for lowering and lifting a continuous steel pipe includes a housing, conveyor chain, clamping rollers, hydraulic pipe clamping and hydraulic cylinders, chain tension. While the cylinders of the pipe clip pairs pivotally connected with placed into the guide slots on the chassis sliding bearings, bearing clamping rollers. Body groove have a rectangular cross-section. The area of the working surfaces of the pistons of each of the following top-down pair of cylinders less than the previous one. The use of the invention allows to provide the reliability and durability of the mechanism for lowering and lifting a continuous steel pipe with repeated use. 4 Il. The invention relates to the field of operation and servicing of oil wells using a continuous steel pipes and rods.A known mechanism for lowering and lifting a continuous steel pipe, comprising a housing, conveyor chain, clamping rollers, cylinders clamp pipe with friction pads, hydraulic cylinders, chain tension (patent USSR N 682145, E 21 B 19/00, AZIA voltage of the pipe is created in the area of its exit from the feed mechanism, which results in this part of damage and tear.The technical effect of using the proposed solution is to ensure uniform stress distribution along the length of the pipe, forming the tensile and compressive forces in areas of the clip.This technical effect is achieved as follows.The mechanism for lowering and lifting a continuous steel pipe includes a housing, conveyor chain, clamping rollers, cylinders clamp pipe with friction pads and cylinders, chain tension. While the cylinders of the pipe clip pairs pivotally connected with placed into the guide slots on the chassis sliding bearings, bearing clamping rollers. Body groove have a rectangular cross-section. The area of the working surfaces of the pistons of each of the following top-down pair of cylinders less than the previous one.Due to the fact that the guide grooves of the housing are rectangular in cross-section, the movement of the sliders with clamping rollers is directed, without distortions.Due to the fact that the area of the working surfaces of the pistons of each of the following top-down pair of cylinders less than the previous one, compensated for the uneven tension along the length of the pipe, the conscious clamp pipe total stresses are equal.In Fig. 1 shows a General view of the mechanism for lowering and lifting;
in Fig. 2 - node clamping circuits;
in Fig. 3 - section a-a of Fig. 1;
in Fig. 4 - section b-B of Fig. 1.The mechanism for lowering and lifting a continuous pipe includes a housing 1 with the guide grooves 2 having a cross-section of rectangular shape. Into the guide grooves placed clamping rollers 3, is rigidly fixed to the slide 4. Two traction chain 5 with the friction pads 6 are installed through the top of the drive sprocket 7 and the lower idler sprocket 8. Stars through the reduction gear driven by the drive 9. On the outer walls of the mechanism 1 with the two sides of the pairs of fixed cylinders 11, 12, 13, 14, connected to the slide 4 by means of hinges. The cylinders 15 provide the tension of the chain 5.The mechanism works as follows.Rotation of the actuator 9 via the gear is transmitted to the upper drive sprocket 7, which rotate circuit 5, thrown over the lower idler 8.The rollers 3 mounted on the sliders 4 are moved along the guide grooves 5 and grip the pipe 16.Continuous tube 16 is clamped between the friction pads 6 rotating traction chains 5. Clamp adjusts the 11, 12, 13 and 14 on the slide 4 is transmitted force, providing the necessary voltage to each specific capture zone of the pipe.The use of the proposed technical solution ensures the reliability and durability of the mechanism for lowering and lifting a continuous steel pipe with repeated use. The mechanism for lowering and lifting a continuous steel pipe, comprising a housing, conveyor chain, clamping rollers, cylinders clamp pipe with friction pads, hydraulic cylinders, chain tension, characterized in that the cylinders clamping pipes in pairs pivotally connected with placed into the guide slots on the chassis sliding bearings, bearing clamping rollers and the grooves have a rectangular cross-section, and the area of the working surfaces of the pistons of each of the following top-down pair of cylinders less than the previous one.
FIELD: mining industry.
SUBSTANCE: device has slanting frame with lower rotation drive and localizer, clamps of drilling pipes, stacks for storing drilling pipes. Conveyor is mounted on slanted frame, having adjustable drive, while clamps of drilling pipes having elevator links are fixed to conveyor branches, as well as open localizers and upper drive-swivel, and stacks for storing drilling pipes are placed along movement of conveyor in its upper portion. Upper end of drilling column is placed in well pipeline. At the end of stacks for storing drilling pipes a vehicle is placed with clamps for pipes to provide additional traction force and performing hoisting operations for drilling stalks consisting of several drilling pipes.
EFFECT: higher efficiency.
3 cl, 3 dwg
FIELD: mining industry.
SUBSTANCE: drilling device includes a rotator and hoisting gear, consisting of two force hydraulic cylinder with separator ring between them, through which rod passes, provided with pistons mounted in cylinders. Hoisting mechanism also includes fixed and moveable rollers and flexible links. Moveable rollers are placed inside the hollow of force cylinders and are fixed on outer surfaces of pistons, and fixed ones - on outer surfaces of end covers of cylinders. Force cylinders are made of different diameters, while cylinder for hoisting drilling columns greatest diameter. Plant is provided with two bars, fixed on upper and lower end covers and made in form of guides for rotator, separator ring and end covers are provided with fixing assemblies on front and back supports of post and hydraulic cylinder for raising the post to working position.
EFFECT: higher efficiency, simplified construction.
FIELD: mining industry.
SUBSTANCE: device has platform and on the platform it has oil station with drive, mast and mechanism for feeding drilling tool drive, made in form of hydraulic cylinder, body of which is fixed at platform, and on free and of rod of which a carriage with two rollers is mounted, which are placed along length of rod, two rollers, mounted in upper and lower portion of mast and flexible link, fixed by its ends in place of extreme position of each of carriage rollers with retracted and extended rod of hydraulic cylinder and skirting rollers of carriage on inner side, and rollers of mast - on outer side. Device is provided with additional two coaxially mounted rollers, mounted in zone of connection of end of flexible link, skirting side roller of carriage, and single roller, mounted in zone of connection of second end of flexible link. One of branches of flexible link after carriage roller skirts single roller and each branch of flexible link skirts coaxially mounted rollers on opposite sides.
EFFECT: higher reliability.
1 dwg, 2 cl
FIELD: mining industry, particularly devices specially adapted for blasthole drilling during sinking and supporting mine tunnels.
SUBSTANCE: drilling rig comprises guiding grill mounting, spinner movably installed on drill mounting and extending in longitudinal direction thereof, spinner feeding device and release mechanism for uncoupling kinematical connection between rope and feeding device. Feeding device includes lead drum on which rope is wound. Lead drum end is connected with drill mounting body. Lead drum is made as a friction pulley. Release mechanism is operated rope tightening means and is installed on the drill mounting.
EFFECT: increased efficiency of blasthole drilling.
FIELD: mining, particularly boring rigs adapted to drill blast-holes during mine boring and lining.
SUBSTANCE: boring rig comprises rotator movably installed on guiding frame and provided with feed drive including friction pulley and flexible member passing over the pulley. The flexible member is connected to tightening device and is made as working and idle threads enclosing friction pulley. The friction pulley includes parts having different diameters. Working thread passes over pulley part having smaller diameter in one winding direction. Idle thread encloses pulley part having greater diameter in opposite winding direction. Some ends of working and idle threads are fastened to frame, other ones are connected to tightening device and may be alternately tightened.
EFFECT: increased efficiency of drilling operations due to provision of forced rotator movement in initial position after backward drilling operation.
3 cl, 1 dwg
FIELD: mining, particularly drilling rigs for blast-hole drilling in mine tunnel roof.
SUBSTANCE: drilling rig comprises movable rotator installed on guiding mounting and provided with feeding device. The feeding device includes friction pulley and flexible member passing over the friction pulley. The flexible member includes working and idle branches. The idle branch is connected to tightening device. Guiding mounting includes two telescopic parts, namely post and body. Minor pulleys are secured to body ends. Working branch end is fastened to the post so that working branch serially passes over lower and upper minor pulleys and turns over friction pulley. The tightening device is installed on the post. The post and the body are provided with devices, which prevent mutual post and body rotation and control rotator and body movement order.
EFFECT: increased efficiency of blast-hole drilling in mine tunnel roof in the case of large roof height difference.
4 cl, 4 dwg
FIELD: mining, particularly devices for blast-hole drilling in excavation roof.
SUBSTANCE: drilling rig comprises slider movably installed on guiding column, rotator with drilling rod and feeding device having drive shaft kinematically connected with drilling rod and driven shaft provided with friction pulley. Flexible member connected to tightening device passes over friction pulley. Drive shaft of feeding device is hollow and has axial orifice. Rotator and feeding device are separate members, wherein rotator is installed in lower slider part and feeding device is located in upper part thereof so that drilling rod passes through drive shaft orifice.
EFFECT: increased drilling efficiency due to decreased power necessary for drilling rod rotation and reduced drilling crown blade wear.
3 cl, 2 dwg
FIELD: mining, particularly devices for bore-hole drilling during mine excavation and lining.
SUBSTANCE: rock perforator is made as rotator with supply drive. Supply drive comprises driving drum adapted to wind rope coils and releasing mechanism. Drum end is secured to mine lining. Releasing mechanism breaks kinematic link between rope and supply drive. Driving drum is made as friction pulley. Releasing mechanism is created as accumulation mechanism or weight fastened to idle rope branch.
EFFECT: provision of constant supply speed, elimination of emergency situations and increased operational reliability of perforator as a whole.
FIELD: mining, particularly devices for bore-hole drilling in mine tunnel.
SUBSTANCE: boring rig comprises rotator with feeding assembly movably installed on guiding frame and including friction pulley and flexible member passing over friction pulley. The flexible member has working and idle branches connected with tightening device. Working and idle branches are made as block and tackle systems having the same order.
EFFECT: increased efficiency due to provision of stable drilling of rock having different hardness.
FIELD: oil and gas industry.
SUBSTANCE: rotational supply system includes a traverse of a supporting assembly with a rotator, which is arranged in the traverse, a traverse movement drive, a polyspast system with blocks and flexible connections forming the branches of the working and reverse travels. Blocks of the branch of the working travel are arranged in lower part of the mast, and blocks of the branch of the reverse travel - in upper one, and a depth sensor with an actuating element and a position fixation device of the actuating element is arranged in the block of the branch of reverse travel. A garland is meant for supply of blowdown agent to the drilling machine. Arrangement of the sensor in the block of the branch of reverse travel allows reducing the vibration action on the actuating element as much as possible, which leads to improvement of the sensor actuation accuracy.
EFFECT: improving the quality of blasting operations at the open pit and reducing explosive consumption owing to obtaining wells of the specified depth.