CS243914B1 - Driving head with floating bearing - Google Patents

Description

DESCRIPTION OUT

TO THE COPYRIGHT CERTIFICATE CZECHOSLOVAK SOCIALIST

REPUBLIC (19) 243914 (11) (Bl)

(22) Enrolled 02 03 84 (21) (PV 1528-84) (40) Published 17 09 85 (51) Int. Cl.4 E 21 B 7/28

OFFICE FOR DISEASES AND DISCOVERIES (45) Published 15 11 87 (75)

Author of the invention BARTKO MICHAL ing. CSc., PRIEVIDZA; ŠOVCÍK STEFAN ing., CHRENOVEC (54) Carrying head with floating bearing 1

BACKGROUND OF THE INVENTION The present invention relates to a float-bearing driving head used in non-explosive rock-breaking machines.

For the transmission of torque to drill rods with the possibility of tilting to the three-stage (3 °) as well as partially axial movement at the point of attachment of the drill bit, the driving head serves the purpose of driving from abroad. This drive head is dimensioned for the transmission of torques corresponding to an extension diameter of up to 2,440 mm, even after the manufacturer's recommendations. In addition to this, it is necessary to change the drive casing more frequently, which is quickly worn by the stepping system of the drill rod exchange at 1.5 m.

The present drawbacks are solved by the entraining head with a floating bearing, the essence of which is that it consists of a coupling in which the lubricating head is screwed, with the coupling being supported by a washer pin. The gutter is bolted to the coupling by means of screws, which at the same time serves as a support for the wiper ring fixed by means of a tab and screws. At the same time, the guiding arm is supported by a ring secured by a tongue and secured by screws, and the drive sleeve is supported on the ball surface of the ball-shaped lip. The drive well is equipped with an external toothing in the upper part, which is slidably supported by the internal toothing of the clutch. The inner sleeve is provided with a sealing sleeve, axially secured with a retaining ring sealed with a ring and a sealing ring. Preferably, the floating bearing driving head has a clamping pin and a drive housing made of nickel chromanangan-molybdenum material. By using the object of the invention, it is mainly achieved by the use of a mounting head with a floating mounting of torque transmission corresponding to the extension diameter of up to 3600 mm. from this material. Not a negligible indicator is the substantial cost savings on purchases abroad. The higher effect is also manifested by the design of the head from the higher bearing capacity

In the accompanying drawing, a cross-section of the entrainment head with a floating bearing is shown in the right-hand figure, and a view of the entrainment head is drawn in the melting half.

The floating head is comprised of a coupling 1 in which the lubricating nipple 16 is screwed in to supply 243914

Claims (2)

243914 lubricating grease into the working space formed by the tripping pin 5, the spherical lip 3, the drive sleeve 2 and the coupling 1. The coupling 1 is provided with a self-centering gearing in the upper part and assembled with the guT support 3 in the lower part At the same time, the drive sleeve 2 is pushed onto the ball support 3, which in the lower part is provided with a conical thread for clamping the drill rod and in the upper part with a toothing which engages the coupling sleeve 1 and allows axial sliding and tilting of the drive sleeve 2 to the tumbler pin 5. The clamping pin 5 rests on the coupling 1 by means of a washer 10, which is pressed into the coupling 1. To clamp the clamping pin 5 into the chimney assembly, it serves as a conical thread, and a toothing having a clamping pin 5 in the lower inner part serves to tighten the clamping pin 5. To prevent lubricant grease and also to avoid impurities in the working area, the G-seal, which is secured by a locking ring, serves the purpose of 1. The floating bearing driving head is characterized in that it comprises a coupling (1) in which a lubricating head (16) is arranged, with the clamping pin (10) being clamped over the clamping pin (1) by a locking pin. (5) provided at the bottom with internal evolutionary grooves and, in the upper part, a more conical unevenly angular trapezoidal zig-zag; ) fastened by a clip (7) and screws (12) and at the same time as a ring carrier (4) provided with a flat groove secured by a tongue 18 and provided with a sealing ring 19 and a lower sealing ring 20. the spherical surface of the drive sleeve 2 and the ball bearing 3 serve the wiper ring 8 which is slidably slidable to the ball support 3 by means of a tab 7 and a shroud 12. For drilling operations with a drill bit, the driving head according to the invention is provided with a ring 4 which has an internal grooving and is positioned on the ball support 3 by means of a tongue 9 and a tongue 13 and fastened by means of the screws 13. The floating installation of the present invention can be used in the field of engineering, but also in engineering, wherever it requires the impact transfer of torque currents, the transfer of high tensile force, and the free deposition of two joined components through the sphere. The advantage is that the driving head according to the invention can be produced from domestic components and its production is also ensured at a conventional engineering plant. (9, 15) and fastened by screws (13), the drive sleeve (2) fitted with an inner unevenness of the conical thread and at the upper part of the toothing which is slidably engageable with the spherical surface of the ball support (3) Also, the inner portion of the drive sleeve (2) is provided with a seal housing (6) axially secured with a retaining ring (18) and sealed with a ring (19) and a sealing ring (20). 2. The driving head with a floating bearing according to claim 1, characterized in that the clamping pin (5) and the driving sleeve (2) are made of nickel chromium-manganese-molybdenum material. 1 sheet of drawings