SE124432C1 - - Google Patents
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- Publication number
- SE124432C1 SE124432C1 SE124432DA SE124432C1 SE 124432 C1 SE124432 C1 SE 124432C1 SE 124432D A SE124432D A SE 124432DA SE 124432 C1 SE124432 C1 SE 124432C1
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- SE
- Sweden
- Prior art keywords
- rock drilling
- drilling machine
- motor
- valve
- outlet
- Prior art date
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- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
Uppfinnare: P. A. Lincoln. Inventor: P. A. Lincoln.
Prioritet begai.d frdn den janazari, 19.44 (Amerikas foreata stater). Priority begai.d frdn January, 19.44 (United States of America).
Foreliggande uppfinning hanfor sig till bergborrmaskiner och avser speciellt en matningsanordning for frammatning och tillbakadragning av en bergborrmaskin till resp. fran arbetsstallet. Uppfinningen är a-vsedd att an\ludas i samband med en bergborrmekanism, S0111 omfattar en motor for astadkommande av frammatningsrorelsen och vid vilken borrmekanism endast en jamforelsevis liten del av operatOrens tid tages i ansprak for aLt kontrollera och overvaka mekanismens funktion. I normala fall Sr det endast nodvandigt att igangsatta matningsmotorn vid phborjandet av en borrningsoperation och att omkasta motorn vid slutet av derma operation i syfte att aterfora bergborrmaskinen till dess utgangslage. The present invention relates to rock drilling machines and relates in particular to a feeding device for advancing and retracting a rock drilling machine to resp. from the workplace. The invention is intended to be operated in connection with a rock drilling mechanism, SO111 comprises a motor for generating the feed movement and in which drilling mechanism only a comparatively small part of the operator's time is used to control and monitor the function of the mechanism. In normal cases it is only necessary to start the feed motor at the start of a drilling operation and to reverse the motor at the end of this operation in order to return the rock drilling machine to its initial position.
Under tiden Sr borrskotaren oforhindrad att fullgora andra plikter, sorn uppsta i samband med arbetet. Det kan dad& understundom intraffa, att denne Sr upptagen med dylika ting yid den tidpunkt, dS bergborrmaskinen nar fram till det bakersta granslaget ph det organ, som uppbar densamma. I ett dylikt fall tvingas bergborrmaskinen o La till sk fast lasningsingrepp med andra delar ay borrmekanismen, att det Sr omojligt att ater igangsatta motorn utan att praktiskt taget demon-term matarmekanismen for att frig8ra dennas roterbara element. In the meantime, the drilling rig is unimpeded to fulfill other duties, which arise in connection with the work. It may sometimes occur that he is preoccupied with such things at the time when the rock drill reaches the rearmost branch of the organ which received it. In such a case, the rock drilling machine o La is forced into so-called fixed welding engagement with other parts of the drilling mechanism, that it is impossible to restart the motor without practically disassembling the feed mechanism to release its rotatable elements.
Fireliggande uppfinning har alltsa bland annat till andamhl att hindra matarmotorn frau att tvinga bergborrmaskinen till lasande ingrepp med andra delar av borrmekanismen. Ett mera speciellt andamal med uppfinningen Sr att automatiski stanna matarmotorns funktion under bergborrmaskinens tillbakadragning ph dess styrning, innan maskinen kan bringas till ett lage, i vilket den fOranleder fastklanming ay matarmekanismens roterande delar. Andra andamal med uppfinningen skola narmare angivas i det foljande. The present invention thus has, inter alia, the purpose of preventing the feed motor from forcing the rock drilling machine into lasing engagement with other parts of the drilling mechanism. A more special object of the invention is to automatically stop the operation of the feed motor during the retraction of the rock drilling machine and its control, before the machine can be brought to a position in which it causes clamping of the rotating parts of the feed mechanism. Other objects of the invention will be described in more detail below.
Bifogade ritning, pa vilken lika hanvisningsbeteckningar hanfi5ra sig till liknande delar, askadliggor en utforingsform av uppfinningen I fig. 1 visas en sidovy av en berg- borrmekanism forsedd med en anordning enligt uppfinningen. I fig. 2 visas i storre skala en delvis sektionerad sidovy ay borrmekanismensmatningsanordning. I fig. 3 och 4 visas snitt efter linjerna 3-3 resp. 4-4 i fig. 2. The accompanying drawing, in which like reference numerals refer to similar parts, illustrates an embodiment of the invention. Fig. 1 shows a side view of a rock drilling mechanism provided with a device according to the invention. Fig. 2 shows on a larger scale a partially sectioned side view of the drilling mechanism feeding device. Figures 3 and 4 show sections along lines 3-3 and 3, respectively. 4-4 in Fig. 2.
Med hanvisning narmast till fig. 1 omfattar den generellt med 20 betecknade borrmeka- nismen en bergborrmaskin 21, som Sr monte- rad ph en styrhylsa 22, vid mars bakre ande Sr anbragt en matarmotor 23 for forflyttning ay maskinen 21 i styrhylsans langdriktning, -vilken matningsrorelse averfares fran motorn 23 till maskinen medelst en matarskruv 24. Referring to Fig. 1, the drilling mechanism generally designated 20 comprises a rock drilling machine 21, which is mounted on a guide sleeve 22, at the rear end of March being arranged a feed motor 23 for moving the machine 21 in the longitudinal direction of the guide sleeve, which feed movement is passed from the motor 23 to the machine by means of a feed screw 24.
Styrhylsan 22 kan vara av kand typ med en konisk del 25 avsedd att samverka med en lamplig (icke visad) fastklamningsanordning, medelst vilken borrmekanismen kan fastsattas mid en stational. stoddel. Styrhylsans mot- staende innervaggar aro forsedda med langsgaende spar 26 f8r att glidbart upptaga asar 27 ph bergborrmaskinens motsatta sidor. The guide sleeve 22 can be of the jug type with a conical part 25 intended to cooperate with a suitable (not shown) clamping device, by means of which the drilling mechanism can be fixed between a stationary. stoddel. The opposite inner cradles of the guide sleeve are provided with longitudinal grooves 26 for slidably receiving axles 27 ph opposite sides of the rock drilling machine.
Borrmaskinen 21 kan likaledes vara av van- hgmed ett (icke visat) slagorgan, avsett att driva ett arbetsredskap 28 in i det mate- rial, i vilket ett hal skall upptagas, och i narheten av bergborrmaskinens bakre ande fin- nes ett Ora 29, som upptager en matarmutter 30, vilken star i gangingrepp med inatarskruyen 24 och lases i sitt lage medelst en mot orat 29 anliggande mutter 31. The drilling machine 21 can likewise be usual with a percussion member (not shown), intended to drive a work tool 28 into the material in which a hall is to be accommodated, and in the vicinity of the rear end of the rock drilling machine there is an Ora 29, which receives a feed nut 30, which is in engagement with the intake screw 24 and is locked in its position by means of a nut 31 abutting against the groove 29.
Motorn 23, som Sr fastsatt yid den bakre anden av styrhylsan 22 medelst bultar 32, Sr ay den fluidumpaverkade typen med roteran- de skovelblad. Motorn har ett holje 33, som bestar ay ett flertal avsnitt, vilka aro hopfo- gade i det ratta inbardes laget medelst bultar 32. Limn holjet 33 finnes en kammare 34 for upptagande av en kolv eller rotor 35, som Sr anordnad excentriskt inuti kammaren 34 och forsedd med ett flertal radiella spar 36, vilka upptaga skovelblad 37, som phverkas medelst tryckfluidum i och for rotorns kringvridning. 2 — 12432 — Motorn 23 är av den omkastbara typen, och motorns rotationsriktning regleras medelst en ventil 38, som är vridbart anordnad i en ventilkammare 39 intill kammaren 34. Ventilen 38 har en urborrning 40 och en fran denna ledande port 41, som kan bringas i Lige mittfor kanaler 42, och 43, vilka leda till motsatta sidor om stallet for minimiavstandet mellan kammarens 34 vagg och rotorns periferiska yta. Kanalerna 42 och 43 tjana till att framleda tryckfluidum till motorn for att driva derma och tjana tillika shsom utlopp for frail motorkammarens overksamma sida kommande luft. The motor 23, which is attached to the rear end of the guide sleeve 22 by means of bolts 32, is connected to the fluid-packed type with rotating vane blades. The motor has a housing 33, which consists of a plurality of sections, which are joined in the steering wheel, the team is brought in by means of bolts 32. The adhesive housing 33 has a chamber 34 for receiving a piston or rotor 35, which is arranged eccentrically inside the chamber 34. and provided with a plurality of radial grooves 36, which receive vane blades 37, which are actuated by means of pressure fluid in and for the rotation of the rotor. The motor 23 is of the reversible type, and the direction of rotation of the motor is regulated by means of a valve 38, which is rotatably arranged in a valve chamber 39 adjacent the chamber 34. The valve 38 has a bore 40 and a port 41 leading therefrom, which can be brought Directly opposite channels 42, and 43, which lead to opposite sides of the stable for the minimum distance between the cradle of the chamber 34 and the peripheral surface of the rotor. The channels 42 and 43 serve to supply pressure fluid to the engine to drive it and also serve as an outlet for the air coming from the inactive side of the engine chamber.
For att mojliggara luftens avgang frail mellanrummen mellan skovelbladen 37 genom en av kanalern.a 42 och 43, sedan ifragavarande skovelblad passerat motorkammarens huvudutblasningsoppning 44, Or ventilen 38 pa sin utsida forsedd med langsghende spar 45 och 46, vilka aro avsedda att bringas mitt for kanalerna 42 resp. 43. Sparen 45 och 46 Oro upptagna i diametralt motstaende delar av yentilen och tjana i givna lagen av denna for astadkommande av kommunikation mellan kanalerna 42, 43 och luftavloppsoppningarna 47 resp. 48. Den ena luftavloppsoppningen, namligen den som i foreliggande fall Or betecknad med 48, leder direkt fran ventilkammaren 39 till den yttre luften, medan luftavloppsOppningen 47 stracker sig genom hOljet 33 till ett stalle i dettas framre del. Medelst den beskrivna anordningen kan salunda mellan skovelbladen pa motorns overksamma sida innesluten luft avga genom en kanal 42 eller 43, ett spar 45 eller 46 och ett avloppshal 47 eller 48, beroende ph rotorns 35 rotationsriktning. To enable the air to escape, the spaces between the vanes 37 through one of the ducts 42 and 43, after the vane in question has passed the main exhaust opening 44 of the engine chamber, or the valve 38 on its outside are provided with longitudinal grooves 45 and 46, which are intended to be located opposite the ducts. 42 resp. 43. The grooves 45 and 46 are accommodated in diametrically opposite parts of the yentile and serve in the given layers thereof to provide communication between the channels 42, 43 and the air outlet openings 47 and 47, respectively. 48. One air outlet opening, namely the one in the present case Or denoted by 48, leads directly from the valve chamber 39 to the outside air, while the air outlet opening 47 extends through the housing 33 to a stable in its front part. By means of the described device, air trapped between the paddle blades on the inactive side of the engine can pass through a channel 42 or 43, a groove 45 or 46 and a drain hall 47 or 48, depending on the direction of rotation of the rotor 35.
Vid den visade anordningen utmynnar luftavloppsoppningen 47 i en urborrning 49 i holjets 33 framre del, vilken urborrning upptager den bakre anden av matarskruven 24. Urborrnin.gen 49 har storre diameter an matarskruyen, varfor den del av urborrningen 49, i vilken oppningen 47 utmynnar, i sjalva verket tjanar shsom en kammare 50 far att upptaga den frail den overksamma sidan av kammaren 34 utdrivna luften. En port 51 i holjet 33 astadkommer kommunikation mellan kammaren 50 och den yttre luften. In the device shown, the air outlet opening 47 opens into a bore 49 in the front part of the housing 33, which bore occupies the rear end of the feed screw 24. The bore 49 has a larger diameter than the feed screw, for which part of the bore 49 in which the opening 47 opens in fact, it serves as a chamber 50 for receiving the frail the inactive side of the chamber 34 expelled air. A port 51 in the housing 33 provides communication between the chamber 50 and the outside air.
Kammarens 50 inre an.de kan, sasom visats, begransas medelst en bussning 52, vilken tjanar sasom ett lager for matarskruvens 24 andparti, och i urborrningens 49 motsatta Jude finnes en ventil 53 i form av en hylsa, som Or glidbart anordnad i urborrningen 49 for att reglera avloppets 47 utloppsande 54. Yen-then 53 fastlialles normalt i laze far frilaggning av utloppsanden 54 medelst en mellan -ventilen oak bussningen 52 insatt fjader 55. The inner end of the chamber 50 can, as shown, be delimited by means of a bushing 52, which serves as a bearing for the end portion of the feed screw 24, and in the opposite Jude of the bore 49 there is a valve 53 in the form of a sleeve slidably arranged in the bore 49 to regulate the outlet 54 of the drain 47. Yen-then 53 is normally fixed in laze far exposing the outlet sand 54 by means of a spring 55 inserted between the valve and the bushing 52.
Ventilen omgi-ver matarskruven ph visst avstand fran denna, och pa ventilens framre On-de finnes en ringformig forlangning 56, som skjuter ut fran holjets 33 framre ande i va.gen for matarmuttern 30, sa att nar bergborrmaskinen narmar sig motorholjet, matarmuttern 30 kommer till anliggning not den ringformi- ga forlangningen 56 och forskluter ventilen 53 halal Over utloppet 54. Forlangningen 56 Or av lamplig langd, sa att ventilen 53 kan om- skiftas till detta lage medelst bergborrmaskinen, innan motorns stationara delar och bergborrmaskinen komma till ingrepp med varandra. The valve surrounds the feed screw at a certain distance therefrom, and on the front end of the valve there is an annular extension 56 which projects from the front end of the housing 33 in the path of the feed nut 30, so that when the rock drill approaches the motor housing, the feed nut 30 comes into contact with the annular extension 56 and closes the valve 53 halally over the outlet 54. The extension 56 is of suitable length, so that the valve 53 can be switched to this position by means of the rock drilling machine, before the stationary parts of the engine and the rock drilling machine come into engagement with each other.
Godtyckliga lampliga htgarder kunna vara vidtagna for att overfora drivmomentet fran motorn till matarskruven 24. Den -visade anordningen Or av i och for sig Mind typ. Den omfattar ett kugghjul 57 med innerkuggning, vilket Or roterbart anordnat ph vaggen till en kammare 58 i holjet 33. Den inre kuggkran.- sens kuggar sta. i ingrepp med asar 59 pa den periferiska delen av en flans 60 pa matarskruyens 24 bakre ande. Flansen 60 ingar i den framre delen av det med innerkuggning forsedda hjulet, och de bakre delarna av dettas kuggar sta i ingrepp med kuggarna pa ett drev 61, som uppbares av en axel 62 i rotorn 35 och Or fastkilat vid detta medelst en Wider 63. Arbitrary suitable guards may be taken to transmit the drive torque from the motor to the auger 24. The device shown is of a per se Mind type. It comprises a gear 57 with inner teeth, which is rotatably arranged ph the cradle to a chamber 58 in the housing 33. The teeth of the inner gear crane stand. engaging axles 59 on the peripheral portion of a flange 60 on the rear end of the auger 24. The flange 60 engages in the front part of the inner geared wheel, and the rear parts of its teeth engage with the teeth of a gear 61, which is supported by a shaft 62 in the rotor 35 and is wedged thereto by means of a Wider 63.
Matarskruven 24 Or farhindrad att utfora langsgaende rorelser relati-vt motorn, for vilket andamal en stotknapp 64 Or anordnad i en mellan kamrarna 34 och 58 befintlig platta 65 och tjanar sa.som anslag for matarskruven 24 bakre ande for att hindra skruven att ram sig i riktning av motorn. Matarskruvens forflyttning i motsatt riktning hindras me-deist bussningen 52, vars inre ande ligger an mot flansens 60 narliggande andparti. Ledningen 66, som tjanar for overforing av tryckfluidum till motorn for att driva denna, Or likaledes lampligen forbunden med organet 65, som har en passage 67 for att hvagabringa standig kommunikation mellan ledningen 66 och ventilens 08 urborrning 40. The feed screw 24 is prevented from performing longitudinal movements relative to the motor, for which purpose a push button 64 is arranged in a plate 65 present between the chambers 34 and 58 and serves as a stop for the rear screw 24 of the feed screw 24 to prevent the screw from hitting direction of the engine. The movement of the auger in the opposite direction is prevented by the bushing 52, the inner end of which abuts the adjacent end portion of the flange 60. The conduit 66, which serves to transmit pressure fluid to the engine for driving it, is likewise suitably connected to the member 65, which has a passage 67 for providing continuous communication between the conduit 66 and the bore 40 of the valve 08.
Vid anordningens funktion, och nar ventilen 38 Or i loge med porten 41 mittfor kanalen 42, roterar ado'. rotorn 35 och shlunda matarskruven 24 i riktning moturs, sett fran vanster 0 ritningen i fig. 1 och 2. Denna rorelse av matarskruven medfor att bergborrmaskinen 21 glider framat utmed styrhylsan 22 sa att bergborrmaskinen framfores i den en gang installda, avsedda riktningen for paverkan pa arbetsverktyget 28. I detta lage av ventilen befinner sig sparet 46 i det lige, i -vilket kanalen 43 star i forbindelse med utloppet 48, varigenom Oven den hogra sidan ay kammaren 34 (fig. 3) star i kommunikation med den yttre luften. In the operation of the device, and when the valve 38 Or is in the box with the port 41 opposite the channel 42, the ado 'rotates. the rotor 35 and shlunda the auger 24 in the counterclockwise direction, seen from the left in the drawing in Figs. 1 and 2. This movement of the auger causes the rock drill 21 to slide forward along the guide sleeve 22 so that the rock drill is advanced in the once installed, intended direction for impact on the working tool 28. In this layer of the valve the recess 46 is located in the straight, in which the duct 43 is in communication with the outlet 48, whereby the upper right side of the chamber 34 (Fig. 3) is in communication with the external air.
Sedan borrarbetet fullbordats, kringvridas ventilen 38 till ett annat regleringslage for att bringa porten 41 till kommunikation med kanalen 43. Rotorn 35 och matarskruven rotera cla i riktning medurs for att draga bergborrmaskinen tillbaka till dess ursprungliga lage. Under denna operation av motorn star motor- — kammarens 34 vanstra sida i forbindelse med atmosfaren genom kanalerna 42, 45, 47 kammaren 50 och porten 51 ()eh fOrbliva i kommunikation med atmosfaren, tills matarmuttern 30 kommer till ingrepp med den ringf ormiga forlangningen 56. Ventilen 53 fiirflyttas da bakat jamte bergborrmaskinen och a-vstanger utloppet 54. After the drilling work is completed, the valve 38 is rotated to another control position to bring the port 41 into communication with the channel 43. The rotor 35 and the auger rotate cla in a clockwise direction to pull the rock drill back to its original position. During this operation of the engine, the left side of the engine chamber 34 communicates with the atmosphere through the channels 42, 45, 47, the chamber 50 and the port 51 () and remain in communication with the atmosphere until the feed nut 30 engages the annular extension 56. The valve 53 is then moved backwards along the rock drill and a-closes the outlet 54.
Darefter komprimeras den frau mellanrummen mellan skovelbladen 37 ph rotorns overksamma sida till kanalen 42 och darmed fiirbundna kanaler overforda luften, och nar lufltryeket nar ett varde, som tillnarmelsevis är lika med drivtrycket pa rotorns verksamma sida, stannas motorn. Detta ager rum, innan matarmuLtern kan drivas till ingrepp med motorns holje, och alla roterande delar i matarmekanismen frigOras dad& hell for att ater driva bergborrmaskinen framat utmed styrhylsan. Thereafter, the fracture spaces between the vane blades 37 and the inactive side of the rotor are compressed to the duct 42 and associated channels overtake the air, and when the air pressure reaches a value which is approximately equal to the driving pressure on the active side of the rotor, the engine stops. This takes place before the feed nut can be driven into engagement with the engine housing, and all rotating parts of the feed mechanism are released to drive the rock drilling machine forward again along the guide sleeve.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE124432T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE124432C1 true SE124432C1 (en) | 1949-01-01 |
Family
ID=41923297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE124432D SE124432C1 (en) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE124432C1 (en) |
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