DE102014102314A1 - Suction adapter for a rock suction drill - Google Patents

Abstract

The invention relates to a suction adapter for a rock suction drill (2), wherein the rock suction drill (2) has an insertion section (3) a drill shank (4) and a drill head (5), wherein the rock suction drill (2) at least one Suction channel (6) which extends over at least an axial portion of the drill shank (4) and which opens in the region of the drill head (5) and in a coupling portion (7) of the rock suction drill (2) to the outside, said Suction adapter (1) has an adapter interior (10), a suction port (11) for receiving a vacuum cleaner tube (R) and a drill enclosure (12), wherein in the assembled state of the rock suction drill (2) with its coupling portion (7) in the drill enclosure (12), so that the at least one suction channel (6) communicates with the suction connection (11) via the drill casing (12) and the adapter interior (10). It is proposed that the suction adapter (1) has at least two adapter parts (13, 14) which can be joined to one another for mounting the suction adapter (1) and complement each other by joining to the drill casing (12) and the suction connection (11) ,

Description

The invention relates to a suction adapter for a rock suction drill with the features of the preamble of claim 1, a rock suction drilling system according to the preamble of claim 11 and a method for assembling a suction adapter according to the preamble of claim 13.

The suction adapter in question is associated with a rock suction drill, which is suitable for drilling in concrete or reinforced concrete, but also in other masonry, rock o. The rock suction drill is intended for use in conjunction with a hammer, impact and / or rotary drilling device. For the coupling with the respective drilling device, the rock suction drill has a plug-in section. This is followed by a drill shaft and finally a drill head.

The well-known rock suction drill ( DE 10 105 408 A1 ), from which the invention proceeds, has a suction channel, which extends over a substantial part of the multi-part drill shaft there. The suction channel is used to extract drilling dust, which has formed on the drill head. The suction channel opens on the one hand in the region of the drill head and on the other hand in a coupling section to the outside. The suction adapter has a drill enclosure, in which the rock suction drill runs with its coupling section, so that the drilling dust can be extracted by the drill head via the suction channel and the suction connection. For this purpose, usually a vacuum cleaner tube of an electric vacuum cleaner is connected to the suction connection.

The known suction adapter is designed in one piece and must be pushed during its assembly with the drill enclosure on the rock suction drill, which is mounting technology unfavorable.

But manufacturing technology, the known suction adapter is disadvantageous, since the optimal design of the drill enclosure in terms of storage, damping and / or tightness due to the poor accessibility of the drill bit can be realized only within narrow limits.

The invention is based on the problem to improve the known suction adapter mounting technology and manufacturing technology.

The above problem is solved in a suction adapter according to the preamble of claim 1 by the features of the characterizing part of claim 1.

Essential is the fundamental consideration that the suction adapter can be composed of at least two adapter parts that surround the rock suction drill, so that with a suitable design mounting the suction adapter without axial sliding of the suction on the rock suction drill is possible. In particular, the adapter parts can be joined together in a joining direction, which is aligned substantially perpendicular to the geometric drill axis of the rock suction drill.

Specifically, it is proposed that the suction adapter has at least two adapter parts, which can be joined together for mounting the suction adapter and complement each other by the joining to the drill collar and also the suction connection.

With the proposed solution, not only the assembly of the suction adapter on the rock suction drill can be simplified. Rather, the production of the suction adapter can be optimized, since the drill enclosure and the suction connection in the unassembled state can readily be made easily accessible. Thus, the drill enclosure can be optimally designed with minimal production engineering effort. The same applies to the suction connection accordingly.

In the particularly preferred embodiment according to claim 2, the production can be further simplified by the two adapter parts are designed to be identical to each other. In particular, tooling and logistics costs can be reduced.

In an optional variant of claim 3, the drill enclosure on two axially spaced bearing sections, wherein at least one bearing section is associated with an elastic bearing assembly. The elastic bearing assembly serves not only the storage of the suction adapter on the rock suction drill, but also the noise and / or vibration damping and the sealing of the adapter interior to the outside. The elastic bearing assembly may be realized by at least one elastic bearing ring. It is also conceivable that the elastic bearing assembly molded to the suction adapter incidentally in the plastic injection molding, in particular molded in 2K injection molding is.

A high mechanical stability results according to claim 4, characterized in that at least one adapter part is at least partially formed of a rigid material or of a hard elastic material.

In particular, for the rigid or hard-elastic design of the adapter parts claim 6 shows a particularly robust design. Due to the bias of the two adapter parts against each other, despite the rigidity or the hard elasticity of the adapter parts can bring a certain flexibility in the suction adapter. This is advantageous, for example, when the vacuum cleaner tube is inserted by clamping into the suction port.

In the embodiment according to claim 7, a widening of the suction connection, in particular against the bias of the two adapter parts, is possible up to a limit widening of the suction connection. In addition, a fastening arrangement ensures that the two adapter parts are blocked against each other.

The further preferred claims according to claims 9 and 10 relate to the clamping insertion of the vacuum cleaner tube into the suction port, wherein the blocking of the adapter parts by means of the fastening arrangement guarantees high clamping forces on the vacuum cleaner tube. At the same time it is ensured that the suction adapter is not destroyed during the insertion of the vacuum cleaner tube by the forces and moments occurring. This is particularly notable in the design of the suction adapter made of a rigid material.

According to another teaching according to claim 11, which has independent significance, a rock suction drilling system with a rock suction drill and a suction adapter for the rock suction drill described above is claimed. In this rock suction drilling system also a vacuum cleaner pipe is provided, which is received by the suction port.

In a particularly preferred embodiment, the arrangement is just made so that the assembly of the vacuum cleaner tube to a widening of the suction port and finally to a blockage of the two adapter parts against each other as mentioned above, leads. Please refer to all versions of the proposed suction adapter.

According to another teaching according to claim 13, which also has independent significance, a method for assembling a proposed suction adapter is claimed.

Essential to the further teaching is that the two adapter parts are joined together and complement each other by joining to the drill enclosure and possibly also the suction connection.

The claims 14 and 15 relate to preferred embodiments of the proposed method for joining the adapter parts on the one hand and for mounting the clamping assembly and the vacuum cleaner tube on the other. Reference may be made to all versions of the proposed adapter part, provided that they are suitable for explaining the proposed method.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. In the drawing shows

1 a proposed rock suction drilling system with a rock suction drill and an associated, proposed suction adapter in a perspective view,

2 the arrangement according to 1 in a sectional view taken along section line II-II with unmounted vacuum cleaner tube and

3 the arrangement according to 2 , in which the expansion of the suction port has reached the limit widening.

The illustrated in the drawing, proposed suction adapter 1 is a rock suction drill 2 assigned, the one insertion section 3 , a drill shaft 4 and a drill head 5 having. The rock suction drill 2 has at least one suction channel for the suction of drilling dust 6 on, extending over an axial portion of the drill shank 4 extends and extends in the area of the drill head 5 and in an axial direction from the drill head 5 spaced coupling section 7 opens to the outside. Accordingly, there are openings 8th in the drill head 5 on the one hand and an opening 9 in the coupling section 7 , The term "axial" is always present on the geometric axis 17 of the rock suction drill 2 based.

The coupling section 7 is preferably located between the ends of the rock suction drill 2 , in particular between the drill head 5 and the insertion section 3 ,

The coupling section 7 serves to connect the suction adapter 1 to the rock suction drill 2 such that by the connection of a vacuum cleaner tube R of an electric vacuum cleaner E to the suction adapter 1 Drilled meal over the substantially axial openings 8th , the suction channel 6 that is essentially radial opening 9 and the suction adapter 1 can be sucked off. For this purpose, the suction adapter 1 an adapter interior 10 , a suction connection 11 for receiving the vacuum cleaner tube R and a drill collar 12 on.

1 shows the assembled state of the suction adapter 1 on the rock suction drill 2 , In this assembled state, the rock suction drill runs 2 with his coupling section 7 in the drill surround 12 so that the at least one suction channel 6 over the drill enclosure 12 and the adapter interior 10 with the suction connection 11 communicated. This is accomplished by opening up 9 in the region of the coupling section 7 inside the drill enclosure 12 located.

The representation according to 1 shows that the suction adapter 1 here and preferably two adapter parts 13 . 14 having, for mounting the suction adapter 1 are joinable. 1 shows the unassembled adapter parts 13 . 14 in dashed line and the mounted adapter parts 13 . 14 in a solid line.

The comparison of the unmounted state and the assembled state of the suction adapter 1 shows that the adapter parts 13 . 14 by joining to the drill collar 12 and the suction connection 11 complete. This means that both adapter parts 13 . 14 each a component of drill enclosure 12 and suction connection 11 form. Through the below explained in detail division of the suction adapter 1 in two adapter parts 13 . 14 This results in a particularly simple installation of the suction adapter 1 , without any axial sliding of the suction adapter 1 on the rock suction drill 2 is required.

The suction adapter is particularly easy to manufacture 1 in that the two adapter parts 13 . 14 here and preferably are identical to each other. In the event that the adapter parts 13 . 14 can be produced in plastic injection molding, both adapter parts 13 . 14 be manufactured with one and the same injection mold. This embodiment also has logistic advantages, as in the provision of the adapter parts 13 . 14 for the assembly no distinction between the two adapter parts 13 . 14 is required.

1 further shows that the drill enclosure 12 two axially spaced, round in cross section bearing sections 15 . 16 formed. The storage sections 15 . 16 serve primarily to produce a rotary coupling between the rock suction drill 2 and the suction adapter 1 , Given the occurring during drilling vibrations comes the bearing sections 15 . 16 but also a dampening function too. Finally, the bearing sections provide 15 . 16 for a certain sealing of the adapter interior 10 opposite the rock suction drill 2 so one over the suction port 11 applied negative pressure for a suction of drilling dust via the suction channel 6 leads.

In view of the above functions of the bearing sections 15 . 16 It has proven to be advantageous that at least one bearing section 15 . 16 an elastic bearing assembly is assigned. Here and preferably, the bearing arrangement has at least one elastic bearing ring 18 . 19 , here and preferably an O-ring on. At the in 1 illustrated and so far preferred embodiment is two bearing sections 15 . 16 one bearing ring each 18 . 19 assigned. In principle, it can also be provided that the bearing sections 15 . 16 two bearing rings each 18 . 19 assigned. At the bearing rings 18 . 19 are preferably rubber rings.

The adapter parts 13 . 14 can be designed in different materials. Here and preferably, at least one adapter part 13 . 14 at least partially formed of a rigid material or a hard elastic material. In the illustrated and insofar preferred embodiment, both adapter parts 13 . 14 at least partially formed of a rigid material. This allows the attachment of the two adapter parts 13 . 14 realize latching to each other in a particularly simple manner, as will be shown.

The here and preferably identical adapter parts 13 . 14 are like in 1 shown designed as half shells, between which the rock suction drill 2 is enclosed in the assembled state. Here is the dividing plane 20 between the two half-shells, ie between the two adapter parts 13 . 14 substantially parallel to the geometric drill axis 17 aligned. It can be according to the representations 2 and 3 See that the parting plane even through the geometric drill axis 17 passes. This symmetrical design of the suction adapter 1 takes into account the fact that the two adapter parts 13 . 14 are configured here and preferably identical to each other.

In the sense of a particularly simple manufacturability are the adapter parts 13 . 14 preferably configured in one piece and, more preferably, produced by plastic injection molding. In the event that the adapter parts 13 . 14 are made in plastic injection molding, it may be readily provided that the above-mentioned, elastic bearing assemblies to the adapter parts 13 . 14 are sprayed. For example, sections of the above-mentioned bearing rings 18 . 19 to the two adapter parts 13 . 14 Facials.

There are different advantageous possibilities conceivable, the two adapter parts 13 . 14 to fasten together. In the illustrated and so far preferred embodiment are For this purpose, two separate measures have been taken, as explained below.

1 shows that a clamping arrangement 21 is provided, which in the assembled state, the two adapter parts 13 . 14 biased against each other. The biasing direction is in 1 with the arrows 22 indicated.

A structurally particularly easy to implement clamping arrangement 21 can also be the representation according to 1 remove. In the simplest and illustrated case, the clamping arrangement 21 for generating the bias at least one elastic clamping ring 23 , here and preferably an O-ring, on which the two adapter parts 13 . 14 encloses in the assembled state. The ring axis 24 of the clamping ring 23 is then substantially perpendicular to the drill axis 17 aligned.

A particularly advantageous arrangement of the clamping ring 23 shows 1 , Here it is so that the suction adapter 1 one in the mounted state across the rock suction drill 2 protruding adapter section 25 having, wherein the clamping ring 23 in the assembled state, the adapter section 25 encloses. Here and preferably, the clamping ring 23 at the drill enclosure 12 opposite end of the adapter section 25 arranged. At the clamping ring 23 In a particularly preferred embodiment, this is a rubber ring.

In addition to the above-mentioned clamping arrangement 21 is in the illustrated and so far preferred embodiment, a mounting arrangement 26 provided, which is a widening of the suction port 11 , the two adapter parts 13 . 14 pushing against the above bias, allowed to a predetermined limit widening and beyond blocked. It is preferably such that the fastening arrangement 26 a catch 27 which, upon reaching the limit widening, further widening the suction connection 11 blocked. By combining the clamping arrangement 21 and the mounting arrangement 26 is achieved that the suction adapter 1 with regard to a widening of the suction connection 11 Although has a certain elastic compliance, that at a beyond the boundary widening widening of the suction port 11 however, a blockage of the two adapter parts 13 . 14 is effective. This is especially when inserting the vacuum cleaner tube R in the suction port 11 advantageous because this insertion is done regularly clamping. This clamping insertion can be accompanied by considerable forces and torques, which can destroy the suction adapter 1 being able to lead.

The above locking 27 When reaching the limit widening a locking engagement between the two adapter parts 13 . 14 ready by the fact that the catch 27 at least one locking arm 28 and one the latch arm 28 assigned mating catch 29 having. The latch arm 28 and the counter-catch 29 are each on the associated adapter parts 13 . 14 arranged so that the latching 27 preferably when joining the two adapter parts 13 . 14 comes about. 1 shows that there are a total of six catches 27 each with a locking arm 28 and a counter-catch 29 are provided.

This in 1 shown vacuum cleaner tube R can be in the tubular suction port 11 Insert clamping, with the suction port 11 expandable by the introduction of the vacuum cleaner tube R, preferably expandable to the limit widening. In principle, it may also be advantageous that the limit widening during insertion of the vacuum cleaner tube R is not achievable, so that always a certain elastic flexibility between the two adapter parts 13 . 14 remains. Finally, it is conceivable that the boundary widening during insertion of the vacuum cleaner tube R as a function of the respective component tolerances of the adapter parts 13 . 14 and the vacuum cleaner tube R is reachable or just can not be reached.

The situation before insertion of the vacuum cleaner tube R shows 2 , Here remains a gap S between the mating catch 29 and the latch arm 28 , After the complete insertion of the vacuum cleaner tube R, the above blocking occurs between the two adapter parts 13 . 14 through the latch arms 28 and counter-pawls 29 , So that a secure clamping attachment of the vacuum cleaner tube R is given. This clamping attachment is due to the fact that the vacuum cleaner tube R is designed slightly larger than the diameter D of the non-expanded suction port 11 ,

The gap S with not expanded suction connection 11 is less than 1 mm, preferably about 0.5 mm. A corresponding gap s results between the adapter parts 13 . 14 with fully expanded suction connection 11 ( 3 ). The gap s between the adapter parts 13 . 14 However, it is not disturbing because the adapter parts 13 . 14 in any case, where such a gap s arises, slightly overlap. In that regard, the adapter interior 10 at least substantially sealed to the outside.

To limit the insertion distance of the vacuum cleaner tube R is in Absaugadapter 1 an attack 30 provided for the vacuum cleaner tube R, wherein in a preferred embodiment even before reaching the stop 30 the predetermined limit widening is achievable. As above addressed, but it may also be that the limit widening during insertion of the vacuum cleaner tube R is not achievable. Unless the vacuum cleaner pipe R or the suction port 11 is designed at least slightly conical, thus ensuring a particularly secure clamping attachment of the vacuum cleaner tube R.

According to another teaching, which has independent significance, is a rock suction drilling system with a rock auger above 2 , a proposed suction adapter 1 for the rock suction drill 2 and a vacuum cleaner tube R for the suction adapter 1 claimed. On all versions of the proposed suction adapter 1 may be referred.

According to another teaching, which also has independent significance, is a method for mounting a proposed suction adapter 1 on a rock suction drill 2 claimed.

Essential to the further teaching is that the two adapter parts 13 . 14 be joined together and joined by the joining as above to the drill enclosure 12 and the suction connection 11 complete. Also with regard to this further teaching may be to all versions of the proposed suction adapter 1 to get expelled.

In a preferred variant of the proposed method, it is such that the joining of the two adapter parts 13 . 14 in a joining direction that is substantially perpendicular to the geometric drill axis 17 is aligned. This allows the inclusion of the rock suction drill 2 implement in a particularly uncomplicated way.

Further preferably, it is provided that an above clamping arrangement 21 is provided after the joining of the two adapter parts 13 . 14 on the two adapter parts 13 . 14 , this is biased against each other, put on. After placing the clamping arrangement 21 it is preferable that a vacuum cleaner pipe R in the suction port 11 , the suction connection 11 expanding and thus the two adapter parts 13 . 14 pushing apart, is introduced. Further preferably, a likewise mentioned above mounting arrangement 26 provided, which is a widening of the suction port 11 , the two adapter parts 13 . 14 pushing apart, allowed up to a predetermined limit widening and blocked beyond it, wherein upon insertion of the vacuum cleaner tube R, here and preferably before reaching the stop 30 , the border widening is achieved. Also with regard to these further preferred embodiments of the proposed method is allowed to the above statements on the application of the proposed suction adapter 1 to get expelled.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10105408 A1 [0003]

Claims (15)

Suction adapter for a rock suction drill ( 2 ), whereby the rock suction drill ( 2 ) a plug-in section ( 3 ) a drill shaft ( 4 ) and a drill head ( 5 ), wherein the rock suction drill ( 2 ) at least one suction channel ( 6 ) which extends over at least one axial part of the drill shank ( 4 ) and in the region of the drill head ( 5 ) and in a coupling section ( 7 ) of the rock suction drill ( 2 ) opens to the outside, wherein the suction adapter ( 1 ) an adapter interior ( 10 ), a suction connection ( 11 ) for receiving a vacuum cleaner tube (R) and a drill collar ( 12 ), wherein in the assembled state of the rock suction drill ( 2 ) with its coupling section ( 7 ) in the drill enclosure ( 12 ), so that the at least one suction channel ( 6 ) over the drill enclosure ( 12 ) and the adapter interior ( 10 ) with the suction connection ( 11 ) communicates, characterized in that the suction adapter ( 1 ) at least two adapter parts ( 13 . 14 ), which for mounting the suction adapter ( 1 ) are joined together and which by joining to the drill enclosure ( 12 ) and the suction connection ( 11 ) complete. Suction adapter according to claim 1, characterized in that the two adapter parts ( 13 . 14 ) are identical to each other. Suction adapter according to claim 1 or 2, characterized in that the drill enclosure ( 12 ) two axially spaced, in cross-section round bearing sections ( 15 . 16 ) for the rock suction drill ( 2 ), preferably that at least one bearing section ( 15 . 16 ) is associated with an elastic bearing assembly, preferably, that the bearing assembly at least one elastic bearing ring ( 18 . 19 ), preferably an O-ring. Suction adapter according to one of the preceding claims, characterized in that at least one adapter part ( 13 . 14 ) is at least partially formed of a rigid material or a hard elastic material or are. Suction adapter according to one of the preceding claims, characterized in that the adapter parts ( 13 . 14 ) are designed as half shells, between which the rock suction drill ( 2 ) is enclosed in the assembled state, preferably, that in the assembled state, the parting plane ( 20 ) between the two half-shells substantially parallel to the geometric drill axis ( 17 ), preferably by the geometric drill axis ( 17 ) passes through. Suction adapter according to one of the preceding claims, characterized in that a clamping arrangement ( 21 ) is provided, which in the assembled state, the two adapter parts ( 13 . 14 ) biased against each other, preferably, that the clamping arrangement ( 21 ) an elastic clamping ring ( 23 ), in particular an O-ring, having the two adapter parts ( 13 . 14 ) in the assembled state, preferably, that the suction adapter ( 1 ) in the mounted state transversely of the rock suction drill ( 2 ) projecting adapter section ( 25 ) and that the clamping ring ( 23 ) in the assembled state, the adapter section ( 25 ) encloses. Suction adapter according to one of the preceding claims, characterized in that a fastening arrangement ( 26 ) is provided which an expansion of the suction port ( 11 ), the two adapter parts ( 13 . 14 ) pushing apart, allowed to a predetermined limit widening and beyond blocked. Suction adapter according to claim 7, characterized in that the fastening arrangement ( 26 ) a catch ( 27 ), which, upon reaching the limit widening, further widening the suction port ( 11 ), preferably, that the latching at least one latching arm ( 28 ) and a latch arm ( 28 ) assigned mating catch ( 29 ), each on the adapter parts ( 13 . 14 ) are arranged, preferably, that the latching when joining the two adapter parts ( 13 . 14 ) comes about. Suction adapter according to one of the preceding claims, characterized in that a vacuum cleaner pipe (R) in the suction port ( 11 ) is insertable by clamping and that the suction connection ( 11 ) by the introduction of the vacuum cleaner tube (R) expandable, preferably expandable to the limit widening, is. Suction adapter according to one of the preceding claims, characterized in that in the suction adapter ( 1 ) to limit the insertion distance a stop ( 30 ) is provided for the vacuum cleaner tube (R) and that before reaching the stop ( 30 ) the limit widening is achievable. Rock suction drilling system with a rock suction drill ( 2 ), a suction adapter ( 1 ) for the rock suction drill ( 2 ) and a vacuum cleaner tube (R) for the suction adapter ( 1 ), whereby the rock suction drill ( 2 ) a plug-in section ( 3 ), a drill shaft ( 4 ) and a drill head ( 5 ), wherein the rock suction drill ( 2 ) at least one suction channel ( 6 ) which extends over at least one axial part of the drill shank ( 4 ) and in the region of the drill head ( 5 ) and in a coupling section ( 7 ) of the rock suction drill ( 2 ) opens to the outside, wherein the suction adapter ( 1 ) an adapter interior ( 10 ), one Suction connection ( 11 ), which receives the vacuum cleaner tube (R) and a drill collar ( 12 ), wherein the rock suction drill ( 2 ) with its coupling section ( 7 ) in the drill enclosure ( 12 ), so that the at least one suction channel ( 6 ) over the drill enclosure ( 12 ) and the adapter interior ( 10 ) with the suction connection ( 11 ) communicates, characterized in that the suction adapter ( 1 ) is designed according to one of the preceding claims. Rock suction drilling system according to claim 11, characterized in that a fastening arrangement ( 26 ) is provided which an expansion of the suction port ( 11 ), the two adapter parts ( 13 . 14 ) are pushed open, allowed to and blocked beyond a predetermined limit widening and that the suction port ( 11 ) by the introduction of the vacuum cleaner tube (R) expands to the limit widening, preferably that in Absaugadapter ( 1 ) to limit the insertion distance a stop ( 30 ) is provided for the vacuum cleaner tube (R) and that before reaching the stop ( 30 ) the limit widening is achieved. Method for mounting a suction adapter ( 1 ) according to one of the preceding claims on a rock suction drill ( 2 ), characterized in that the two adapter parts ( 13 . 14 ) and joined together by joining to the drill enclosure ( 12 ) and the suction connection ( 11 ) complete. A method according to claim 13, characterized in that the joining of the two adapter parts ( 13 . 14 ) in a joining direction which is substantially perpendicular to the geometric drill axis ( 17 ) is aligned. Method according to claim 13 or 14, characterized in that a clamping arrangement ( 21 ) is provided, which after joining the two adapter parts ( 13 . 14 ) on the two adapter parts ( 13 . 14 ), this biasing against each other, is placed, preferably, that after placing the clamping arrangement ( 21 ) a vacuum cleaner pipe (R) in the suction port ( 11 ), the suction connection ( 11 ) and thus the two adapter parts ( 13 . 14 ) is inserted, more preferably, that a fastening arrangement ( 26 ) is provided which an expansion of the suction port ( 11 ), the two adapter parts ( 13 . 14 ) is pushed open, allowed to a predetermined boundary widening and blocked beyond it and that during insertion of the vacuum cleaner tube (R), in particular before reaching a stop ( 30 ), the boundary widening is achieved.

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