DE1817810U - PILLAR ROTARY DRILLING MACHINE FOR ROCKS AND MINERALS, IN PARTICULAR FOR MINING. - Google Patents

Description

Utility model registration.

Pillar drill for rocks and minerals, in particular for mining.

The innovation relates to a column drill for rocks and minerals and is supposed to solve the problem of a drill rod with different speeds and to drive torques and to give this a certain forward and backward thrust.

Such drills are known. They essentially consist from an electric motor that drives a drilling spindle via a countershaft with spindle gear drives, to which in turn the boring bar is attached. The spindle can move in Driving gear respectively. Shift the driving tube axially, the drive torque is Transferred to the grooves of the drilling spindle via sliding springs.

The Spindle nut driven, which sits on the thread of the drill spindle.

Rotate the drilling spindle, -driven via the spindle gear-and Spindle nut - driven by the feed gear - at different speeds, the spindle is advanced or retracted depending on whether the spindle nut is faster or slower than the spindle turns.

In the known designs of these machines, speed respectively Drive torque and feed by changing gear wheels in certain Change areas. The feed gear is used to idle without feed a clutch is separated from the transmission, the spindle nut turns idle without force with. When the clutch is disengaged, the feed gear is used for the return via claws connected to the housing and shut down.

This known type of drilling machine has several shortcomings.

Above all, the spindle gear with clutch and reduction gear is on one, the feed gear on the other hand on the other side of the electric motor arranged. The long connecting shaft and the one required for both transmission groups Individual storage complicates and increases the cost of production, increases the weight and increase the dimensions. Replacing the gears is time consuming since both housing covers must be removed.

Used to transmit power to shafts, bushings and gears Design elements feather key and groove have changed especially in the last drive stage not proven. They knock out easily during the rough work in the rock. You weaken at the same time the respective individual parts and thus limit the given dimensions an increase in drive power.

The coupling system with claws acting on one side is very hard.

The return, like the forward, is only limited by the fact that the drilling spindle runs against a stop. It is true that gear breakages are avoided as a result, that the clutch then slips. However, this is made free when sliding Heat easily damaged. In addition, the adjustment of the clutch for this and the overload situation cumbersome, since the gear housing has to be opened.

Due to the coupling claws that only work in one direction of rotation even after reversing the direction of rotation of the motor, the drilling spindle only works with limited force be withdrawn, otherwise the claws slip. For the so-called "pulling" of the drill pipe therefore only part of the driving force can be used.

A serious deficiency, which is particularly troublesome in operation, is that in the case of inhomogeneous rock, torque, speed and feed cannot be quickly adapted to the changing conditions. For this must. ten namely removed both gear covers and changed the gears will. In addition, the drills that have been used up to now are to be Actual speed and feed ranges too narrow. In the case of the pillar drill according to the innovation, these shortcomings become so largely avoided largely avoided that with approximately the same weight and the same dimensions measurements an increase in drilling performance to two-threefold is achieved. The speed, torque, feed and return can be adapted much further and more quickly to the most varied of operating conditions, so that the high drilling capacity can almost always be used to the full.

At the same time, the handling and operational safety of the machine can be improved. For this purpose, the following steps were taken in detail: All gears, including the clutch, are combined on only one side of the engine in several levels and in a space-saving design. As a result, the power-transmitting shafts remain short, the bearing clearances are small, and the gear unit becomes more robust. Construction length and weight are saved and can be used for larger dimensions sioning and thus higher drilling capacity can be used.

The gear housing part is perpendicular to the spindle axis in the middle divided. After opening this one parting line, the feed and drive wheels can be opened easy to replace.

The gears of the output stage are frictional with the shafts z. B. connected by spring locking rings. In contrast to the tongue and groove connection, the thus the connection is backlash-free. No part is weakened by groove notches. There the spring locking rings are shorter than the equivalent keys, can save space be built.

All bearings are roller bearings. With the same dimensions, these Bearing especially with strong edge pressure, as often occurs with drilling machines, are more heavily loaded than the previously common plain bearings. Higher drive power can therefore be transferred with the same dimensions.

An additional pair of gears can be used in the transmission housing as an intermediate gear can be used. This allows the speed range for the purpose of slow rotary drilling large Bohrdurohmesser be expanded significantly; both upwards, especially but down.

If the drive motor is designed to be pole-changing, the speed range can be enlarge it to double. Since pole changing is possible immediately without dismantling is, can thus adapt well to the changing operating conditions even with inhomogeneous rock be adjusted. If the pole-changing capability is dispensed with, the same dimensions a drive motor with star-delta connection with multiple of the previous performance be accommodated.

The clutch is designed as a dry disc double clutch, one Coupling for feed, a coupling for back feed. It is from the rest of the gearbox separately encapsulated, so that its lubricant only depends on the most favorable suitability can be selected for gear lubrication. The disc clutch is without claws educated. Feed and retraction can therefore be done with soft, all components gentle Transition to be switched on. After loosening a dust cap, the coupling in the External operation can easily be stopped.

Since the motor, as usual, reverse its direction of rotation the boring bar can be "pulled" via the second return clutch with full drive power. Return and forward are limited by special, mechanically operated stop elements.

These bring both clutches to idle shortly before the end of the stroke.

This prevents the spindle from starting up hard and stressing the dome Lungs caused by slipping are avoided, service life, operational safety and operation are increased respectively simplified. In addition, the Polumschalä device allows driving in the last Area before reaching the end position with 1/2 feed! Eventually the burden becomes of the motor monitored by thermocouples with signaling device. The performance of the Machines can therefore always be fully utilized without hesitation. A harmful one Overload is indicated in good time.

The details of the innovation emerge from the drawing.

The drill is driven by a motor (1) namely is provided that both a 1 to 2 pole-changing motor are installed can as well as a motor of the same dimensions, but only for a speed with substantial higher performance than the pole-changing motor for special applications with higher Performance where pole-changing can be dispensed with.

The engine works on a gear (2,3 + 5) which in two close together lying parallel planes is arranged and also gives the opportunity to go through another intermediate gear to expand the speed range. About a special one The drive tube is set in rotation of the drilling spindle (6) and via a coupling (4) A nut is driven which has a different speed compared to the spindle having.

By engaging the coupling it is achieved that the spindle nut has a higher speed than the spindle and this generates a lead of the spindle; When the clutch is disengaged, the spindle nut runs idly on the spindle, and no feed occurs. When the spindle nut is braked and stopped, the movement of the spindle is reduced. Protection claims:

Claims (1)

1.) Pillar drill for rocks and minerals, consisting of from an electric motor (1), countershaft (2), spindle gear (3) feed and return clutch (4), feed gear (5) characterized in that all gear and output parts on one side of the drive motor in several planes of rotation as a closed unit are arranged so that the shafts and bearing distances remain short. 2.) Drill according to claim 1, characterized in that the Gear housing part (G) is divided perpendicular to the axis of rotation in the middle, wherein in one half the feed wheels with clutch, in the other half the drive wheels to run. 3.) Drill according to claim 1 or 2, characterized in that Gears, liners and shafts are positively connected to one another. 4.) Drilling machine according to one of claims 1 to 3, characterized in that that all bearings are designed as roller bearings. 5.) Drilling machine according to one of claims 1 to 4, characterized in that an additional intermediate back gear between the motor pinion (la) and back gear (2) can be added or removed. 6.) Drilling machine according to one of claims 1 to 59, characterized in that that the electric motor (1) is pole-changing or by means of star-three- eoksohaltung is left on. 7.) Drill according to claim 6, characterized in that in addition to the pole switchover or the Btern delta connection also a reversal of the sweeping is possible; and always through the 0 position to toughen you To avoid changing the direction of rotation. 8.) Drilling machine according to one of claims 1 to 7, characterized in that that the feed gear (5) is driven via a dry disc double clutch (4) one clutch for the advance, the other clutch for the return stroke is working. 9. § Drilling machine according to one of claims 1 to 8, characterized in that that by the movement of the drilling spindle (6) just before its respective end position the forward or reverse thrust clutch that has been effective in each case via a limit switch (4) is moved to empty position. 10.) Drilling machine according to one of claims 1 to 9, characterized in that that the excessive heating of the motor stator winding via one or more thermal elements is indicated by a reporting device.