EP3421186A1 - Drill holder for automatic drilling of mounting holes in concrete ceilings - Google Patents

Abstract

Drill machine holder for automatic drilling
of mounting holes in concrete ceilings.

The device consists of telescopically telescoping tubes (5),
of which above the uppermost tube segment (7) telescopically
a pipe head part (9) on bearings (11) and (13) guided over.

This pipe head part (9) is moved with a weight (17) by means of a chain (19), via a deflection roller (21) upwards.

At the pipe head part (9) a drill (3) is attached,
through which then mounting holes in one
Concrete pavement can be drilled.

Description

The present invention relates to a device for arranging and propelling a tool when working overhead, for example on a ceiling, a height-adjustable holder for a drill when working overhead and a method for producing boreholes in a concrete pavement.

For the arrangement of tools, machines and the like, in particular of drills for working overhead, for example in the area of a ceiling, a number of devices are known.

For example, describes the US 5,295,620 a rod on which a drill is held at the end, which rod can be raised by means of a foot lever to propel the drill against a roof for drilling holes.

In the US 5,322,397 as well as the DE 195 01 663 is ever described a similar device in which the propulsion of a drill, however, accomplished by means of a manually operable hand lever.

The DE 42 16 710 Finally shows a stand with ejectable rod, at which terminal a drill is held. The ejection of the rod is done manually by means of a crank gear.

All proposed solutions have the disadvantage that during the drilling process by an operator or by a worker at the same time a mechanism must be operated to to push the drill. Especially when working overhead, full concentration is required, which is thereby disturbed, which makes the work inaccurate. In addition, the procedures described are relatively power consuming, so that can be expected quickly from the fatigue of the serving worker.

It is therefore an object of the present invention to provide a device which allows easy overhead work without the aforementioned undesirable manual operations.

According to the invention the object is achieved by means of a device according to the wording of claim 1.

It is proposed that a holder for the tool is provided on an end region which can be changed in its longitudinal extent, tubular or stator-like element, which holder is displaceably connected in the longitudinal direction to the tube or the stator. This mount on the tubular member is coupled to a slidable weight such that upon movement of the weight due to gravity, the mount is expelled from the pipe or stud center, i. the holder is driven by the gravitational movement of the weight against the upper end of the tube or of the stand or beyond this end, for example against a ceiling.

Preferred embodiments of the device defined according to the invention are characterized in the dependent claims 2-13.

The device described in the invention is particularly suitable for arranging and working with a drill when working overhead, for example, when mounting holes in a concrete pavement.

The invention will now be explained in more detail by way of example and with reference to the accompanying drawings.

Fig. 1

schematisch im Längsschnitt eine erfindungsgemässe Vorrichtung für das Arbeiten mit einer Bohrmaschine über Kopf zum Anbringen von Löchern in einer Betondecke,

Fig. 2

das obere Ende der Vorrichtung von Fig. 1 in vergrösserter Darstellung, zeigend schematisch den Antrieb für das Bewegen der Bohrmaschine (nicht dargestellt) in die Decke,

Fig. 3

wiederum das obere Ende der erfindungsgemässen Vorrichtung, zeigend die Befestigung der Halterung für die Bohrmaschine,

Fig. 4

darstellend das obere Ende der Vorrichtung, gesehen in Pfeilrichtung A in Fig. 2,

Fig. 5

den Schnitt entlang der Linie I-I aus Fig. 2,

Fig. 6

den Schnitt entlang der Linie II-II aus Fig. 2,

Fig. 7

das Bodenteil der Vorrichtung gemäss Fig. 1, und

Fig. 8

eine weitere Ausführungsvariante des Bodenteils der Vorrichtung aus Fig. 1.

Showing:

Fig. 1

1 is a schematic longitudinal sectional view of an apparatus according to the invention for working with a drill head over the head for mounting holes in a concrete floor;

Fig. 2

the upper end of the device of Fig. 1 in an enlarged view, schematically shows the drive for moving the drill (not shown) in the ceiling,

Fig. 3

again the upper end of the device according to the invention, showing the fastening of the holder for the drilling machine,

Fig. 4

representing the upper end of the device, seen in the direction of arrow A in FIG Fig. 2 .

Fig. 5

the section along the line II Fig. 2 .

Fig. 6

the section along the line II-II Fig. 2 .

Fig. 7

the bottom part of the device according to Fig. 1 , and

Fig. 8

a further embodiment of the bottom part of the device Fig. 1 ,

Fig. 1 shows schematically in longitudinal view of an inventive device 1, comprising a tubular stator 5, at the upper end of a drill 3 is arranged for overhead work and for the production of boreholes in a concrete floor. The tubular stand 5 consists of a series of telescopically plug-in tube parts 7, which can be fixed for example by means of plug-in or latchable locking elements 31 and 33 in a certain length. For this purpose, for example, the in Fig. 1 shown middle pipe segment with holes or notches 35 or provided on the opposite pipe side 37, in which holes fasteners 31 and 33 can be inserted. The arranged on the opposite side of the tube holes 37 are each offset in relation to the front side arranged perforations 35 arranged to allow the finest possible length adjustment of the tube or stator 5.

At the upper end of the pipe, a pipe top part or pipe head part 9 which telescopes over the uppermost pipe segment 7 is arranged, on which the drilling machine 3 is arranged. The bracket 41 of the drill 3 on this head part 9 will be described with reference to FIG Fig. 3 explained in more detail. This head part 9 is arranged by means of rollers 11 and 13 longitudinally displaceable on the uppermost tube segment 7 and connected thereto. Finally, this head part 9 terminal a stop 15, which is intended to limit, for example, the propulsion of a drill by abutting the head portion of a ceiling.

The propulsion of the drill 3 and the head part 9 is now primarily under the action of a weight 17 which is disposed within the tube 5. The weight 17 is suspended on a belt 19, which is guided over a guide roller 21, which Deflection pulley on the top tube segment 7, with this firmly connected, is arranged. This deflection roller 21 extends through a slot-like opening in the uppermost tube segment 7 to the outside, and is protected in the outer region by a cover 24. The band 19 extends down the pulley 21 through the cover casing 24, and at the end opposite the weight 17 there is disposed on the belt 19 a handle or take-up reel 23, to which reference is made Fig. 3 to come back.

Thus, the head part 9 relative to the uppermost tube segment 7 of the tube 5 is displaceable, this has laterally in the region of the guide roller 21 has a longitudinal slot which extends largely along the entire length of the head part 9.

Finally, at least one gear 25 is provided in the axis of rotation of the deflection roller, laterally to the deflection roller 21, which engages in a toothed rack 27 which extends in the longitudinal direction of the slot in the interior of the head part 9.

With reference to Fig. 1 and 2 Now, the operation of the inventive device will be explained in more detail. If holes are to be made in a concrete pavement, the device 1 is placed at the desired location, and the drill is aligned with respect to the ceiling so that a hole can be made at the desired location. The electric drill 3 is powered by a first connection cable 4, a switch 29 and another connection cable 6 with power. First, by pressing the switch 29, the drill can be put into operation, whereupon by means of a handle 23, the lowering of the weight 17 can be triggered. On this release of the weight will be later, with reference to Fig. 3 . returned. As a result of gravity, the weight 17 moves downwards within the uppermost tube segment 7 and the deflection roller 21 is set in motion simultaneously via the belt 19. As a result, the gear 25 is set in motion at the same time, which engages in the rack 27. By this engagement of the gear 25 in the rack 27 but now the head part 9 is driven upward and thus the drill 3, which is connected via a bracket 41 with the head part 9. This propulsion of the drill can either be stopped manually by the handle 23 is held, or by appropriate adjustment of the head-side stop 15 on the head part 9, which stop abuts, for example, on the ceiling.

That this drilling process is as even and quiet as possible is ensured by the fact that on the one hand the weight 17 is perfectly guided by lateral rollers or buffer elements 18 within the uppermost tube segment 7 and on the other hand, that the band 19 by rollers 16 and guide elements 20 largely free of vibration to the guide roller 21 is guided. It is also possible in the guide roller 21 to provide a braking mechanism, such that the weight 19 is moved only at a very reduced speed down, which brings the great advantage that the Bohrvortrieb the drill 3 is uniform and always with the same driving force ,

Once the drilling process is completed, the weight 17 can be pulled up again within the uppermost tube segment 7 on the handle 23 until it, for example, in a stop, such as a rubber buffer 14, is present and can be locked. As a result, the drill 3 is simultaneously lowered again.

It is now possible to form the switch 29 in such a way that on the one hand the current only flows from cable 6 to cable 4, if the propulsion of the head part 9 has been triggered and on the other hand, the power is interrupted again when the head part is withdrawn after completion of drilling. Of course, it is also possible to interrupt the power supply by attaching a further switch on the stop 15, when the stop 15 is applied to the ceiling.

With reference to Fig. 3 is discussed some details, which can be preferably arranged in the inventive device. So are in Fig. 3 On the outer wall of the cover 24 notches 26 can be seen, in which notches a headband 41 of the holder 44 can be set latching. This makes it possible to arrange the holder 44 in different positions along the head part 9, for example, so as to set the drilling depth of a drill bit 2 of the drill 3. Further, it is possible to design the seat 45 of the holder 44 such that different makes of drills can be arranged in the holder. This seat 45 may also be designed such that, for example, a lateral displacement of the back of the drill from or to the top tube segment is possible to allow an accurate, vertical alignment of the drill with respect to the ceiling. The rear retaining element 43 finally the holder 44 may be formed such that this holder can be snap-engaged in the holding element 43 in order to quickly change the holder at any time, for example, again to arrange different types of drills on the head part 9.

Another preferred embodiment feature is a locking device in the region of the guide roller 21, by means of which the weight 17 can be set in the starting position. This device comprises a tab 48, which extends on both sides of the deflection roller 21, in particular better in Fig. 4 recognizable. Further, in the peripheral region of the guide roller 21, a cam 50 protruding on both sides is provided, which can be locked in a depression in a passage 49 in the front region of the lug 48. This locked position is in Figure 3 shown pulled out. Now, when a worker on the handle 23 pulls the tape 19 down, this cam 50 is driven from the recess in the passage 49 on the back surface of the tab 48, and when you release the handle 23 is now due to the weight 17, the tape in a clockwise direction over the guide roller 21 moves and at the same time the cam 50 along the rear surface 48a of the tab 48. In other words, the tab 48 releases the guide roller 21 and this can be moved in principle arbitrarily far clockwise. After the drilling operation is completed and the weight 17 is pulled up again on the handle 23 via the band 19, the cam 50 moves to the tab 48 and along the front-side surface 48b to the passage 49, where again the cam 50 in the recess engages and so the guide roller 21 is locked. But this also determines the weight 17 and can not fall down by itself before a next drilling operation.

Further, note the particular configuration of the handle 23 in FIG Fig. 3 refer, in which handle it may be, for example, a self-winding drum, by means of which the drawstring 19 automatically rolled up or when released again is rolled off. This drawstring 19 may be, for example, a chain-like element, a perforated belt, a perforated belt or an unperforated belt, on one side having knobs or notches, which engage in corresponding recesses in the periphery of the guide roller 21. It is essential that the tension band 19 is firmly connected to the peripheral surface during the overrunning of the deflection roller 21, so that upon movement of the weight 17 downwards a rotational movement of the guide roller 21 is triggered to simultaneously drive the preferably each arranged on both sides gear 25. As is known, the head part 9 is driven upward by this gear 25 via the rack 27.

Finally, it should be noted that the head part 9 is placed on the top segment 7 in such a way that during the drilling process resulting dust can not penetrate into the interior of the tube or the stator 5. This is achieved on the one hand in that the head part 9 is closed terminally by the stop 15, and on the other hand, by the walls of the lower, open end of the head part 9, the uppermost tube segment 7 outside surrounds downwardly open. Of course, it is possible to provide 9 further measures in the region of the lower opening of the head part, so that no dust between the walls of the head part 9 and the uppermost pipe segment 7 can penetrate.

Fig. 4 shows the head part 9 and the terminal tube element 7 in the direction of arrow A, according to Fig. 2 seen. In this case, on the one hand, the locking device for locking the guide roller 21 clearly visible, as well as protruding studs 51 in the peripheral periphery of the guide roller 21, for example, provided to intervene in perforations of the drawstring 19.

Fig. 5 again shows the section along the line II Fig. 2 , representing the guide rollers 11, by means of which the head part 9 is guided on the head-side tube element 7.

Fig. 6 shows the section along the line II-II Fig. 2 , in which section the guide roller 21 and the deflection roller to the outside overlapping housing 24 can be seen. Again recognizable are nubs 51, which can engage in perforations of the tension band 19 in order to effect a rotational movement of the deflection roller 21 when the band 19 is moved. Clearly in Fig. 6 also recognizable are the two laterally arranged each toothed wheels 25 which engage in corresponding toothed racks 27 of the tubular member 9 in order to move it in the longitudinal direction along the pipe segment 7. Finally shows Fig. 6 in that, in the region of the deflection roller 21, both the tubular element 7 and the head part 9 have a longitudinal section in the corresponding side wall.

Fig. 7 shows a bottom part 39 of the tube 5, wherein the lowermost tube segment 7a is connected via a hinge 63 with a bottom plate 65. By arranging a hinge 63, the tube 5 can be tilted in the direction of arrow B relative to the bottom plate 65, for example, if the ground is not horizontal, or if inclined bores are to be mounted in a concrete floor. Next, the bottom part 39 on the underside of the bottom plate 65 rubber peg 61 for support, either in each corner of the bottom plate 65 such rubber pegs can be arranged, or per center in a side edge bottom rounded rubber peg, so that the bottom plate 65 in the direction of arrow C tiltable rests on the ground.

Fig. 8 Finally shows a further embodiment of the bottom part 39 and an additional pipe part 67, which can be plugged over the bottom pipe part 7a and connected by means of locking pins 73 with this. This makes it possible to further extend the tube 5, for example, if boreholes need to be drilled in very high spaces on a concrete pavement. Again, this additional pipe part 67 is connected via a hinge 63 to a bottom plate 65, wherein in addition to the hinge 63, a support body 69 is provided, comprising several Auflageabstufungen 71. These different Auflageabstufungen 71, it is possible lower pipe parts, such as the pipe part 7a or to arrange the additional pipe part 67, with different diameters firmly on this support body 69.

Again visible on the underside support body 61, which may be formed rounded, for example, to tilt the bottom plate 65 in the direction of arrow C can. If only a tilt in the direction of arrow B is desired, it is advantageous to provide these support body 61 in the four corners of the bottom plate 65.

In the in the Fig. 1 to 8 illustrated embodiments and the details of the inventive device are, of course, only examples, which can be modified in x-any manner, varied or supplemented by other elements. So it is irrelevant whether the telescopically intermeshable tubular elements are made of a metal, as advantageously made of aluminum, or of a fiber-reinforced plastic material. Regarding material selection, the same statements apply to the weight, the holding elements, etc., which are all made of metal or a correspondingly suitable plastic can be made. Also on design features, such as lifting and re-attaching the head part 9, for example, to replace the weight should not be discussed further at this point, since this is a technical feature that is not directly essential to the invention in itself.

It is essential to the invention that a holder for arranging a tool is provided at the upper end of a tubular or stand-like element, for overhead working, which holder is operatively connected to a weight arranged on or in the tube such that upon movement of this weight due to Gravity down at the same time the bracket is driven away from the center of the pipe or against or over the upper end of the pipe to perform an operation with the tool can.

Claims (15)

Device for arranging and for the propulsion of a tool when working overhead, for example on or in a concrete floor, characterized in that on a variable in its longitudinal extent, tubular or stand-like element at one end portion a holder for the tool is provided which displaceable in the longitudinal direction with the
Tube or stand is connected, and which holder is coupled to a sliding weight such that upon movement of the weight due to gravity, the holder is driven away from the tube or stator center. Device, in particular according to claim 1, characterized in that the weight and the holder over a free
rotatable deflection roller are operatively connected to each other by a band such that when moving the weight due to gravity
the bracket is driven away from the pipe or stator center. Device, in particular according to one of claims 1 or 2, characterized in that the weight is slidably guided within the tube and is operatively connected via a fixedly connected to the tube pulley by means of a perforations or notches having band with the holder
the band with the perforations or indentations in the circumference of the deflection roller is guided over the roller engaging and this set upon displacement of the weight in rotation, which rotational movement triggers the displacement of the holder. Device, in particular according to claim 3, characterized in that provided on the deflection roller a translation
is such that when moving the weight due to gravity
the bracket is moved away from the center of the tube by a much smaller distance than the distance traveled by the weight. Device, in particular according to one of claims 2 to 4, characterized in that concentrically arranged on the guide roller at least one gear, with a substantially smaller diameter than the guide roller and that the holder laterally on a mounted on the pipe end and this cross-over, one-sided closed , Telescopically displaceable Rohrendteil or headboard is arranged, which
has on its inner wall a longitudinally extended threaded or rack into which engages the gear. Device, in particular according to claim 5, characterized in that the displaceable Rohrendteil or head part, to
the holder and / or in the region of the guide of the weight an end stop is provided to limit the propulsion of the tool after a predetermined path length. Device, in particular according to one of claims 1 to 6, characterized in that means are provided for electrically connecting a possibly electrically operated tool on the pipe or stand in the region of the holder or an end stop for limiting the displacement of the holder, optionally such with the Holder or the pipe end or the end stop are operatively connected, that the power supply of the tool in the retracted initial position and / or is automatically interrupted when reaching the end stop. Device, in particular according to one of claims 1 to 7,
characterized in that the weight in its raised starting position can be fixed or locked. Device, in particular according to one of claims 2 to 8,
characterized in that provided on the deflection roller latching means are provided for fixing or locking the weight in the starting position, which Einrastmittel unlocked
are, for example, by applying a train on the tape in the direction of the weight pulling upwards. Device, in particular according to one of claims 1 to 9, characterized in that the tube or the stator consists of several elements, telescopically formed one inside the other and in the region of the respective compounds

the individual elements locking or fixing means are provided to connect the elements in a predetermined length of the tube or the stator firmly together. Device, in particular according to one of claims 1 to 10, characterized in that the tube or the stator has a bottom part, with which the tube or the stand at least
in a direction tiltable or pivotally connected via an axis, and that optionally provided on the underside of the bottom part of rounded bearing surfaces, in such a way
the bottom part and, connected thereto, the tube or the stand can be tilted in at least one further direction. Device, in particular according to one of claims 5 to 11, characterized in that the holder is longitudinally displaceable
is connected to the Rohrendteil or headboard, and in
different, preferably a predetermined grid corresponding positions fixed to the pipe end part is connectable. Device, in particular according to one of claims 11 or 12, characterized in that at least one further tubular element
is provided, which between pipe or stand and
the bottom part can be arranged so that it on the
pushed on the lower end of the tube and firmly connected with this
is to further extend the tube or the stand. Height adjustable tool holder for placing a
Drilling machine for working overhead, in particular for creating
of boreholes in a concrete pavement, characterized
that it is a device according to one of the claims
1 to 13 acts. Method for producing boreholes in a concrete pavement by means of a device according to one of claims 1 to 13, characterized
marked that necessary for the creation
Drill terminal in a holder on a tubular
or stand-like element is arranged, which holder is longitudinally displaceable connected to the tube or the stator
is, and that on or in the tube a weight due to gravity
is moved down, which weight over a pulley
is operatively connected to the bracket, passing through the down
movement of the weight took place the holder together with the
Drill is driven upwards or against the ceiling to
to create such a borehole in the concrete pavement.

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