Boring rig

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

 

The invention relates to the mining industry, in particular to the structures of devices designed for drilling holes in the roof framing.

Known drilling machine containing the guide column mounted on it is movable in the longitudinal direction of the rotator with the feed drive, including leading a drum on which is wound a rope, the end of which is connected to the housing of the column and the tripping mechanism kinematic connection of the rope with the feed drive [1].

A disadvantage of the known device is that during the drilling process when the rope winding on the drum "pie" arbitrarily change the diameter of the winding, and then randomly changes the feed rate, which leads to violations of drilling and breakage of the drilling tool.

The closest technical solution is a drilling machine that contains movably mounted on the guide column, a carriage placed on her rotator with the drill rod and the feed drive, the drive shaft of which is kinematically connected to the drill rod, and the driven shaft has a friction disk covered by a flexible element connected with the tensioning device [2].

Tools drilling is made on the basis of this technical solution, characterized by a relatively stable step feed for each turn of the drill rod. The design of especiay the possibility of regulation of this step, depending on the characteristics abusively rocks. Simple and compact design of the document feeder can be used in combination with widely used now hand drilling tool, such as mining and electricity and pneumovirinae, as well as with pneumatic portable, core and telescopic drills percussion-rotary action. The fact that the currently used feed drills pneumatic feeders constantly press the drill bit to the bottom of the hole, than contribute to its strong abrasive wear in the process of turning [3]. The application of the recommended feeder with constant step feed allows you to keep the crown in the strike and subsequent rotation directly from the plane of the bottom of the borehole without constant preload that will significantly reduce abrasive wear of her blade. This in turn will reduce the consumption of crowns and increase average scheduled speed drilling.

Along with these advantages of the above construction has the disadvantage, the essence of which consists in the following.

Rotator drilling tool and the feed drive are practically a single functional element placed in one housing. The spindle rotator, in which is inserted the drill rod is simultaneously drive shaft of the worm gear of the document feeder. This design decision can be the t can only be used for rotary drilling mode, without imposing shock loads on the drive of the feed.

The aim of the invention is the expansion of the scope by using a drilling tool with a variety of drilling methods, including drills percussion-rotary action.

This objective is achieved in that the driving shaft of the feeder is made hollow, with a hole along its axis, the rotator and the feed drive is made separately, and the rotator is mounted at the bottom and the feed drive in the upper part of the carriage so that the drill rod passes through the hole of the drive shaft.

Unlike well-known in the recommended design of the drilling machine shock loads from the drill rod is transmitted to the slaughter, not acting on the nodes of the feed drive. This gives the possibility to use as rotator punchers with great striking power.

1 shows a General view (schematic diagram) of the machine in the starting position; figure 2 - cross section A-a in figure 1.

Drilling rig contains placed on the guide column 1 movable in the axial direction of the carriage 2 and installed it the rotator 3 (hammer percussion-rotary action) and the feed drive 4 (figure 1). The feed drive is a worm gear, drive shaft which is hollow spindle 12, the surface of which is made the worm, and in the upper part there are the Vedas is based on the coupling 13 (Figure 2). On the console side of the driven shaft of the worm gear has a friction disk 6 (Figure 1). The drill rod 5 is passed through the coupling 13, then through the axial hole in the spindle 12, and its end portion is installed in the rotary buochs punch. The rope 7 is fixed on the upper end of the guide column 1, encircles the friction disk 6 and is connected to the tensioning device includes a spring 8 and a handle 9, pivotally mounted in a lower part of the guide column 1. The handle 9 provides a control cable tension so that when you handle 9 down (arrow) tension increases, and in the reverse direction, the cable tension is weakened or completely eliminated. The hammer 3 is mounted on the bracket 10 so that it rests on the elastic element 11, thus decreasing the intensity of the vibration to the machine structure. In the sleeve 13 through which passes the drill rod 5 made a hole section which is congruent with the profile of the drill rod, which ensures the transmission of torque. The rod passes freely through the hole. The clutch 13 can be connected kinematically with the spindle 12 in a variety of ways, ensuring their mutual longitudinal mobility within, larger than the oscillation amplitude of the drill rod. In view of the great variety of options such kinematic relations, including posredstvennyh elements, they are not shown.

The principle and operation of the drilling machine are as follows.

In the initial position, before drilling the carriage 2 with the punch 3 is in the lower part of the guide column 1, the rope 7 is in the tensioned position. The inclusion of the punch 3 is driven into rotation of the drilling rod 5 from the torque through the leading clutch 13 and the spindle worm 12 (Figure 2) is transmitted through the reduction gear on the friction disk 6. Occurs simultaneous rotation of the drilling rod 5 and the friction disk 6, but with different speed, different from each other by the value of the gear ratio of the gearbox.

Hard kinematic connection rod and a friction disk 6 provides a constant step feed for each turn of the drill rod. The rotation of the drill rod in the drill presses percussion-rotary action occurs at the time of idling drummer, i.e. when the rod does not pass the shock pulse. It was at this point when the rod is in a relatively "quiet" state, and there is a mutual contact rod 5 and the leading clutch 13, i.e. the momentum transfer torque. This determines the fact that the axial shock loads on the transmission of the worm gearbox is almost not transmitted. Upon completion of the drilling rotation of the handle 9 weaken the rope 7 and the punch 3 is returned to the bottom.

Comparison of the recommended drilling rig with a base object, namely the one used in the present telescopic punches, shows that the application of the recommended design provides an increase in drilling efficiency by reducing power consumption when the rotation of the drill stem and reduce the wear of the blades drill bits. This is achieved by eliminating the constant pressing them to the bottom of the borehole characteristic supply via pneumatic cylinder. Numerous studies have established that the cost of the power required for the operation of the feeders when percussion drilling methods hard rock, comprise approximately 5% of the total power punch [4]. This suggests that the PTO from the drill stem, used to work feeding mechanism, no significant effect on the operation of the perforator.

Sources of information

1. Karetnikov, VN, Kleimenov V.B. have been, Nordichi A.G. Fastening capital and preparatory workings. Handbook - M., Nedra, 1989 - s-481.

2. EN 2256761 C1, 31.03.2004,

3. Medvedev IVAN drilling mode and selection of drilling machines. M., Nedra, 1975, str-177.

4. Alimov OD, Janitorial LT Drilling machines. M., engineering, 1976, str.

1. Drilling rig containing movably mounted on the guide column of the table, placed the and her rotator with the drill rod and the feed drive, the driving shaft of which is kinematically connected to the drill rod, and the driven shaft has a friction disk covered by a flexible element connected to the tensioning device, characterized in that the driving shaft of the feed drive is made hollow, with a hole along its axis, the rotator and the feed drive is made separately, and the rotator is mounted at the bottom and the feed drive in the upper part of the carriage so that the drill rod passes through the hole of the drive shaft.

2. Drilling machine according to claim 1, characterized in that it is made in the control shaft axial hole provided with a plot of the internal cross-section which is congruent with the profile of the cross section of the drill rod.

3. Drilling machine according to claim 1, characterized in that as a rotator used serial drilling tools (mining drill, hammer drill).



 

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FIELD: mining industry.

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1 dwg, 2 cl

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FIELD: mining industry.

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EFFECT: higher efficiency, simplified construction.

3 dwg

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FIELD: mining industry.

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EFFECT: higher efficiency.

3 cl, 3 dwg

The invention relates to the field of operation and servicing of oil wells using a continuous steel pipes and rods

The invention relates to the field of operation and servicing of oil wells, and is intended for lowering and lifting a continuous steel pipe

Drilling device // 2245982

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

Drilling plant // 2247213

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.

3 dwg

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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

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