CN2310158Y - Internal rotary rod type internal combustion rock drill - Google Patents

Abstract

The utility model relates to an internal rotary rod type internal combustion rock drill, which belongs to a power machine for drilling holes. The utility model is mainly composed of a piston impact system which is composed of an internal combustion engine crankshaft 1, a main cylinder 8, a piston 9 and an impact piston 10 which is arranged in the same cylinder, a powder discharging system of a pressure machine 12 which is linked with the impact piston and an internal rotary rod mechanism. The front side drop pit of a crankshaft box 2 is added with an auxiliary cylinder 16, and an auxiliary cylinder piston is connected with the crank of an engine crankshaft via a connecting rod. An air inlet of an air allocation valve body of an end cover is connected with an air cleaner 5, and an air exhaust opening is communicated with a steel rod centre hole. Therefore, the utility model solves the problems of insufficient powder discharging air pressure flow capacity, easy rod blocking and hard rod rising of original machines.

Description

The interior pricker formula diesel rock frill that changes

Diesel rock frill is a kind of facility that jewel hole holes on working face, the gadding machine tool that organically is combined into one by parts such as petrol engine, compressor, hammer drill, its operating principle is equipped with engine piston and impact piston in brief exactly in motor internal combustion cylinder body, when fuel gas in the cylinder body is lighted acting, most of energy is converted into the kinetic energy of impact piston, bump is installed in the drill rod rock drilling at head position, utilize compressor with the impact piston interlock, compressed air is entered the drill rod centre bore via the head sealed gas chamber, to petrosal foramen row powder.Just change the pricker mode, can be divided into outer pricker formula and interior commentaries on classics pricker formula two classes of changeing again, changeing pricker formula structure outward is to drive the drill rod transposition by engine crankshaft by worm and gear, has increased driving-chain, the fault rate height.Chang Yong approved product such as YN27, YN30 type all are interior commentaries on classics pricker formulas in the market, and interior commentaries on classics pricker formula utilizes impulsion cylinder to move downward to impact that the rotation of self drives the drill rod transposition in the process of drill rod.Its structure is, the impulsion cylinder circumference axially is provided with three spiral straight troughs, straight trough and rotational sleeve internal key are slidingly matched, rotational sleeve and drill rod connect firmly, unidirectional stop gear also is set on the impulsion cylinder, ratchet internal tooth and impulsion cylinder helicla flute are slidingly matched, when impact piston impacts downwards, six needle rollers withstand six arc surfaces of ratchet outer rim, and ratchet stop is forced impact piston to slide and rotated drive rotational sleeve and drill rod transposition, when impact end piston rod upwards returns, needle roller leaves the ratchet exterior arc surface, the impulsion cylinder moving linearly, and ratchet rotates along impact piston spiral straight trough.But all there are row's powder deficiency in these approved products when borehole drilling, block pricker, put forward chronic disease such as pricker difficulty.

Through the long term test application study, when we found borehole drilling, rock dust can not in time be discharged fully and is trapped in the hole body, was to cause the card pricker to change pricker shadoof difficulty, influenced the principal element of drilling efficiency.The purpose of this utility model is that the hole body rock dust is discharged not enough problem when solving borehole drilling.

At row's powder deficiency, domestic colleague corporate boss will increase engine power, improves aerostatic press air chamber air flue sealing raising row powder and takes measures atmospherically, all fails to deal with problems effectively.

The utility model takes following technical scheme to achieve the above object.In engine crankcase one side secondary cylinder (second pneumatic cylinder) is set, secondary cylinder cylinder body axis is perpendicular to the bent axle pivot center, inner chamber of cylinder block is communicated with the crankcase air chamber, the air inlet port of secondary cylinder end cap distribution valve body is connected with the air filter air flue, the exhaust opening air flue is via empty and the drill rod centre bore air flue UNICOM of calming the anger in the head, and the built-in piston of secondary cylinder is connected with the crank of engine crankshaft by connecting rod.

Owing to set up secondary cylinder, increased the extendable room of crankcase fuel chamber, thereby improved the combustion gas density in the motor master cylinder.Secondary cylinder axis normal is placed in master cylinder, secondary cylinder crank and motor master cylinder crank resemble 90 ° of potential differences, secondary cylinder piston and the motor master cylinder piston synchronous coordination of advancing and retreat moves.

Secondary cylinder is provided with the position three kinds of schemes, it is the front side of crankcase, rear side or upside, in order to keep former type appearance and size constant substantially, realize required function with a spot of change, secondary cylinder is arranged on the pit of crankcase front side, and be encapsulated in the casing, to adjacent crankcase, the Oiltank structure size correspondingly redesigns, and corresponding distribution parameter research experiment is reset.

The utility model adopts after the above technical scheme, the air pressure and the flow of row's powder in the diesel rock frill deep hole cutter brill process have been increased, overcome former type card pricker, put forward chronic diseases such as pricker difficulty, also increased simultaneously the impact function of drill rod, technical testing parameter comparison proof the utility model given below makes former type service behaviour bring up to a new class.

Former type YN30A improves back type YNF30 row powder gas 0.4～0.6mpa 1.5～2.0mpa exhaust powder gas flow 128cm ³207cm ³The maximum degree of depth 3～6M 〉=10M impact function 20J 22J that punchinges

It below is enforcement side of the present utility model.

Fig. 1 changes pricker formula diesel rock frill structural representation front view in the utility model.

Fig. 2 changes pricker formula diesel rock frill structural representation lateral view in the utility model.

Fig. 3 is the fundamental diagram that changes pricker formula diesel rock frill engine piston and impact piston in the utility model.

Fig. 4 changes pricker formula diesel rock frill fundamental diagram in the utility model.

Be described in further detail in conjunction with the accompanying drawings.The crank shaft part of internal-combustion engine machine crankshaft 1 is sealed in the crankcase 2, and the admission valve of crankcase 2 is connected with carburetor 3, fuel tank 4 and air filter 5 respectively, becomes the air chamber that oil gas mixes, and the crankshaft two end axle journal is separately installed with magneto 6, driving wheel 7; The crankcase below is provided with a motor master cylinder 8, is provided with engine piston 9 and impact piston 10 in the cylinder body, and engine piston 9 is connected with crank by connecting rod 11, and motor master cylinder 8 bottoms are the aerostatic presses 12 that link with impact piston 10; The impact piston lower circumference is axially arranged with three spiral straight troughs, is slidingly matched with the interior alligator of unidirectional stop gear 13 and the interior straight key of rotational sleeve 14 respectively, rotating drill rod mechanism in constituting, and be encapsulated in the head 15, the interior hex key of rotational sleeve 14 is connected with drill rod; Pit in crankcase 2 front sides is provided with secondary cylinder 16 (second pneumatic cylinder), secondary cylinder cylinder body axis is placed perpendicular to bent axle 1 pivot center, and be encapsulated in the casing, secondary cylinder inner chamber is communicated with the crankcase air chamber, the air inlet port of secondary cylinder end cap distribution valve body is connected with air filter 5 air flues, the exhaust opening air flue is communicated with the drill rod centre bore via the plenum chamber in the head, and the built-in piston of secondary cylinder is connected with the engine crankshaft crank by connecting rod; In order to increase the indoor combustion gas density of crankcase gas, secondary cylinder piston and the motion of motor master cylinder piston advance and retreat must synchronous coordinations, and secondary cylinder 16 axis normal are placed in master cylinder 8 axis, and secondary cylinder crank and motor master cylinder crank resemble 90 ° of potential differences.

Fig. 3 provides the fundamental diagram of diesel rock frill master cylinder piston and impact piston, and engine crankshaft rotates a circle, plug ignition once, master cylinder piston comes and goes a stroke, impact piston back and forth impacts once, finishes a circulation.When motor master cylinder piston 9 when left movement is in Fig. 3 (a) position, fuel gas is compressed, impact piston 10 is subjected to aerostatic press 12 left side air chambers and pressure is set hinders, it is motionless to lean against location right; When master cylinder piston continued to move to Fig. 3 (b) position left, spark plug was jumped out spark, gas fuel burning; Shown in Fig. 3 (c), impact piston overcame aerostatic press left side air chamber setting pressure when master cylinder piston moved to bottom dead centre left by inertia, and aerostatic press left side air chamber exhaust opening is opened rapidly, and impulsion cylinder obtains maximum impact function and fiercely impacts the bit shank rock drilling; When master cylinder piston moves to right to Fig. 3 (d) position, the master cylinder bags increases gradually, combustion gas is entered the left side air chamber of aerostatic press 12 by air flue 17, impact piston return to the right under the force action of pressure reduction and elastic collision counter-force, the gas of compressed gas press 12 right side air chambers injects the drill rod centre bore via plenum chamber in the head 15 and arranges powder simultaneously; When master cylinder piston continues to move right to Fig. 3 (e) position, exhaust opening 18 is opened, waste gas row is outside machine, the air chamber fuel gas is compressed to maximum pressure in the crankcase, master cylinder air inlet port 19 is opened at this moment, combustion gas is poured at the bottom of the master cylinder chamber and is cleared away waste gas, and at this moment crankcase pressure quickly falls to minimum point, and new oil gas is inhaled into crankcase and begins circulation again.

Fig. 4 provides the fundamental diagram that changes pricker formula diesel rock frill in the utility model, do below with summary, but fuel tank 4 and air filter 5 form fuel vapor via carburetor 3 and enter crankcase, in the process of motor master cylinder 8 inner carriers motion, the crankcase fuel gas constantly injects the cylinder chamber, be compressed, burning, work done, discharge, corresponding impact piston 10 impacts the drill rod work done constantly, the piston back-and-forth movement of interlock aerostatic press 12 in the process of return, make compressed air inject head 15 inner chambers and drill rod centre bore row powder by exhaust duct 20, engine crankshaft drives the piston and the master cylinder piston of (second pneumatic cylinder) secondary cylinder 16 and advances and retreat synchronously, thereby increase crankcase and stretch the space, place to increase the density that sucks fuel gas from the carburetor valve, the admission valve of secondary cylinder 16 end cap valve bodies is connected with air filter, outlet valve is connected with plenum chamber in the head 15, to increase the pressure and the flow of row's powder gas.

Claims (3)

1, a kind of interior pricker formula diesel rock frill that changes, belong to rock drilling boring dynamic power machine, mainly comprise the piston impact system that forms by engine crankshaft (1), crankcase (2), fuel tank (4), air filter (5), carburetor (3) engine link (11), piston (9) impact piston (10) motor master cylinder (8); Row's powder system of forming by aerostatic press (12), head 15 internal gas pressure skies and the air flue of impact piston (10) interlock; By impulsion cylinder, the interior rotating drill rod mechanism that unidirectional stop gear (13) and rotational sleeve (14) are formed, it is characterized in that, be provided with (second pneumatic cylinder) secondary cylinder (16) in crankcase (2) side, secondary cylinder cylinder body axis is placed perpendicular to the bent axle pivot center, secondary cylinder inner chamber is communicated with the crankcase air chamber, the air inlet port of secondary cylinder end cap distribution valve body is connected with air filter (5) air flue, the exhaust opening air flue is communicated with the drill rod centre bore via the plenum chamber in the head (15), and the built-in piston of secondary cylinder is connected by the crank of connecting rod with engine crankshaft (1).

2, the interior pricker diesel rock frill that changes according to claim 1 is characterized in that, secondary cylinder (16) axis normal resembles 90 ° of potential differences in the connecting crank of master cylinder (8) axis placement then secondary cylinder (16) piston and the connecting crank of engine piston (9).

3, the interior pricker diesel rock frill that changes according to claim 1 is characterized in that secondary cylinder (16) is positioned at the pit between crankcase (2) and the fuel tank (4), and is encapsulated in the casing.

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