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Rotation unit and method of adjusting bearing clearance

A technology of rotating unit and bearing clearance, which is applied in the direction of rotating bearings, shafts and bearings, drilling equipment and methods, etc., can solve problems such as time-consuming and complicated, and achieve the effect of speeding up adjustment and inspection and easy installation.

Active Publication Date: 2018-10-09
SANDVIK MINING & CONSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of known rotary units requires complex and time-consuming measures for performing the required services

Method used

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  • Rotation unit and method of adjusting bearing clearance
  • Rotation unit and method of adjusting bearing clearance
  • Rotation unit and method of adjusting bearing clearance

Examples

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Embodiment Construction

[0041] figure 1 A rock drilling rig 1 is shown comprising a carrier 2 provided with a drill boom 3 . The drilling boom 3 is provided with a rock drilling unit 4 comprising a feed beam 5 , a feed device 6 and a swivel unit 7 . The swivel unit 7 may be connected to a carriage 8 by means of which the swivel unit 7 may be movably supported on the feed beam 5 . The rotary unit 7 may be provided with a drilling device 9, which may comprise: one or more drilling pipes 10, which are connected to each other; at the outermost end. figure 1 The drilling unit 4 is intended for rotary drilling, wherein the rotary unit 7 is used to rotate the drilling device 9 around its longitudinal axis in the direction R, and at the same time the rotary unit 7 and the drilling device 9 connected to it are carried out by means of The feed device 6 is fed with a feed force F in the drilling direction A. As shown in FIG. Thus, the drill bit breaks the rock due to the effect of the rotation R and the fee...

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Abstract

The invention relates to a rotation unit and method for adjusting bearing clearance. The rotation unit (7) comprises a shaft (14) that is rotated around its longitudinal axis by means of a rotating motor (15). The shaft is supported to a body (17) of the rotation unit by means of a bearing assembly (18). The rotation unit further comprises adjusting means for generating pre-load for the bearing assembly and adjusting bearing clearance. The adjusting means comprises an axial adjusting space (24) and at least one pair of half-elements (27) arranged between axial adjusting surfaces (25, 26) limiting the adjusting space.

Description

technical field [0001] The invention relates to a rotary unit for rock drilling. The purpose of the swivel unit is to generate the rotation required for the drilling equipment connected to the swivel unit. Drilling equipment is provided with drill bits for breaking rock. Axial forces are transmitted through the rotary unit during drilling. The swivel unit does not have an impact device. [0002] Furthermore, the invention relates to a method for adjusting the bearing play of a rotary unit. [0003] The field of the invention is described in more detail in the preambles of the independent claims of the present application. Background technique [0004] Holes can be drilled in rock by using rotary drilling or down-the-hole drilling (DTH). Both rotary drilling rigs and DTH drilling rigs include a rotary unit for rotating the drill tool. The rotary unit includes a shaft that rotates about its longitudinal axis. Rotation and torque are produced by one or more rotating elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02
CPCE21B3/022F16C25/06F16C2352/00F16C19/34F16C19/548F16C2229/00E21B7/025F16C43/04E21B3/04F16C17/04F16C19/364F16C33/366
Inventor 汉努·西尔塔拉
Owner SANDVIK MINING & CONSTR OY
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