CN213205534U

CN213205534U - Down-the-hole hammer drill

Info

Publication number: CN213205534U
Application number: CN202020832476.2U
Authority: CN
Inventors: 杨俊志; 李小明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-05-14
Anticipated expiration: 2030-05-19

Abstract

The down-the-hole hammer drilling machine comprises a travelling mechanism, an amplitude support mechanism arranged at the front end of the travelling mechanism and a drilling mechanism arranged on the amplitude support mechanism, wherein the drilling mechanism has reciprocating displacement freedom degree on a vertical guide slide rail in a gantry support frame by means of a hoisting mechanism, and comprises a down-the-hole hammer arranged on the vertical guide slide rail and a power supply mechanism arranged at the upper end of the down-the-hole hammer in a matching manner. Through carrying out configuration optimization and improvement to down-the-hole hammer and power unit, make it have multiple functions such as positive and negative circulation, auger bit and dig the brill soon, when the down-the-hole hammer operation is smashed the stratum, discharge the piece through slag notch in the drill bit and the inner tube of double-deck sleeve pipe formula drilling rod by the mud pump, guaranteed the work efficiency of rig.

Description

Down-the-hole hammer drill

Technical Field

The utility model belongs to the technical field of engineering machine tool, concretely relates to down-the-hole hammer rig.

Background

The essence of the down-the-hole hammer drill is that the impacter is submerged into a hole in the rock drilling process so as to reduce energy loss caused by the transmission of impact power by a drill rod and further reduce the influence of the hole depth on the rock drilling efficiency; the existing down-the-hole hammer drill has certain disadvantages in the using process, and the machine can generate fragments when drilling, and the fragments can increase the working pressure of the drill, thereby reducing the working efficiency of the drill. In order to solve the problems, in the prior art, the foam mixed fluid is added in the drilling process, and the generated debris is returned to the outside of a well head by the foam mixed fluid, so that the density of a liquid column in a hole is reduced, and the working pressure of equipment is reduced.

At present, the rig of positive and negative circulation, power take off's rotational speed is unchangeable, realizes decelerating through gear toggle gear (the interlock area between tooth and the tooth is little), when meetting different stratum environment operations, its power take off rotational speed is unanimous, if: when hard stones are encountered, the conventional positive and negative circulation drilling machine is easy to cause the conditions of high damage rate of a drill bit, bending deformation and breakage of a drill rod, instability of a main machine and the like, so that the operation efficiency is reduced, and when all the drill rods are in a soil layer, the rotating speed cannot be increased so that the operation efficiency is not high; therefore, a down-the-hole hammer drill which can change the power output according to different stratums, is suitable for operation, has larger torque and higher efficiency is urgently needed.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a down-the-hole hammer rig through carrying out configuration optimization and improvement to down-the-hole hammer and power unit, makes it have multiple functions such as positive and negative circulation, auger drill and dig the brill soon, when down-the-hole hammer operation is smashed the stratum, discharges the inner tube that the piece passes through slag notch in the drill bit and double-deck sleeve pipe formula drilling rod by the mud pump, has guaranteed the work efficiency of rig.

The utility model adopts the technical scheme that the down-the-hole hammer drilling machine comprises a traveling mechanism, an amplitude support mechanism arranged at the front end of the traveling mechanism and a drilling mechanism arranged on the amplitude support mechanism, wherein the amplitude support mechanism comprises a short support frame arranged at the front end of the traveling mechanism, a gantry support frame hinged at the free end of the short support frame and a telescopic mechanism, the two ends of the telescopic mechanism are respectively hinged at the middle part of the gantry support frame and the traveling mechanism, the drilling mechanism has reciprocating displacement freedom degree on a vertical guide slide rail in the gantry support frame by virtue of a hoisting mechanism, and the drilling mechanism comprises a down-the-hole hammer arranged on the vertical guide slide rail and a power supply mechanism arranged at the upper end of the down-the; the down-the-hole hammer comprises a convex shell, an inverted Y-shaped slag discharge pipe sleeved in the shell along the central axis of the shell, an oil-gas bin arranged in the middle of the shell, an impactor group arranged at the lower part of the shell and connected with the oil-gas bin, and water inlet pipes uniformly arranged on the shell in the circumferential direction; the upper end of the oil gas bin is communicated with an air inlet pipe formed by a gap between the upper part of the shell and the slag discharge pipe.

Further, the power supply mechanism is connected with the upper end of the down-the-hole hammer by means of a double-layer casing type drill rod, and comprises: the double-layer sleeve type drill rod comprises an outer pipe and an inner pipe sleeved in the outer pipe, the upper end of the inner pipe is connected with a slurry pump, the lower end of the inner pipe is connected with a deslagging pipe, and a gas pipe formed by a gap between the inner pipe and the outer pipe is connected between a gas inlet pipe of the oil-gas cabin and an air compressor.

Furthermore, the speed regulation speed reducer comprises a three-ring speed reducer and a speed regulation mechanism connected with two input shafts of the three-ring speed reducer, and the input end of the speed regulation mechanism is connected with the power motor; the speed regulating mechanism comprises a spline speed regulating shaft, a speed regulating gear set, a shifting lever mechanism and a positioning mechanism, wherein the speed regulating gear set is sleeved on the spline speed regulating shaft and is meshed with the input shaft gear of the three-ring speed reducer, the shifting lever mechanism is matched with the speed regulating gear set, and the positioning mechanism is arranged between the speed regulating gear set and the spline speed regulating shaft in a matched manner.

Furthermore, positioning mechanism includes the annular spacing groove of align to grid on the spline speed governing axle, set up on speed governing gear train and the mounting hole of perpendicular to spline speed governing axle axis, set up the spring in the mounting hole with the help of the location stopper and set up the location pearl in spring one end, location pearl and annular spacing groove cooperation form the location structure of speed governing gear train and spline speed governing axle.

Furthermore, the driving lever mechanism comprises an adjusting slide rod which is arranged in parallel with the spline speed regulating shafts and is positioned between the two spline speed regulating shafts, an adjusting sliding sleeve sleeved on the adjusting slide rod, a shifting fork arranged at one end of the speed regulating gear set, a connecting rod connected between the shifting fork and the adjusting sliding sleeve and a driving lever arranged on the adjusting sliding sleeve.

Furthermore, the winding mechanism comprises a reel arranged on the travelling mechanism, a matched driving mechanism and a steel wire rope connected between the reel and the drilling mechanism by a pulley.

Further, the inlet of the slag discharging pipe is arranged on the lower end face of the shell.

Further, the inlet tube sets up 4 groups at least, the inlet tube delivery port sets up in shell lower extreme terminal surface border position, water inlet with the help of the pipeline be connected with the water pump.

Adopt the utility model discloses the beneficial effect who produces: through carrying out configuration optimization and improvement to down-the-hole hammer and power unit, make it have multiple functions such as positive and negative circulation, auger bit and dig the brill soon, when the down-the-hole hammer operation is smashed the stratum, discharge the piece through slag notch in the drill bit and the inner tube of double-deck sleeve pipe formula drilling rod by the mud pump, guaranteed the work efficiency of rig.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a structural cross-sectional view of a down-the-hole hammer;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural diagram of a speed-regulating reducer;

fig. 5 is a schematic structural view of the positioning mechanism.

Detailed Description

Referring to attached drawings 1-5, a down-the-hole hammer drill comprises a travelling mechanism 1, a variable amplitude supporting mechanism arranged at the front end of the travelling mechanism 1 and a drilling mechanism arranged on the variable amplitude supporting mechanism, wherein the variable amplitude supporting mechanism comprises a short supporting frame 2-1 arranged at the front end of the travelling mechanism 1, a gantry supporting frame 2-2 hinged at the free end of the short supporting frame 2-1 and a telescopic mechanism 2-3 with two ends respectively hinged at the middle part of the gantry supporting frame 2-2 and the travelling mechanism 1, the drilling mechanism has reciprocating displacement freedom on a vertical guide slide rail in the gantry supporting frame 2-2 by virtue of a hoisting mechanism 4, and the drilling mechanism comprises a down-the-hole hammer 3-2 arranged on the vertical guide slide rail and a power supply mechanism 3-3 arranged at the upper end of the down-the-down-the; the down-the-hole hammer 3-2 comprises a convex shell 3-2-1, a slag discharge pipe 3-2-4 which is sleeved in the shell 3-2-1 along the central axis of the shell 3-2-1 and is in an inverted Y shape, an oil-gas bin 3-2-2 arranged in the middle of the shell 3-2-1, an impactor 3-2-3 group arranged at the lower part of the shell 3-2-1 and connected with the oil-gas bin 3-2-2, and a water inlet pipe 3-2-5 uniformly arranged on the shell 3-2-1 in the circumferential direction; the upper end of the oil-gas bin 3-2-2 is communicated with an air inlet pipe formed by a gap between the upper part of the shell 3-2-1 and the slag discharge pipe 3-2-4. The winding mechanism 4 comprises a reel arranged on the travelling mechanism 1, a matched driving mechanism and a steel wire rope connected between the reel and the drilling mechanism by means of a pulley. The inlet of the slag discharging pipe 3-2-4 is arranged on the lower end surface of the shell 3-2-1. The water inlet pipes 3-2-5 are at least provided with 4 groups, the water outlets of the water inlet pipes 3-2-5 are arranged at the edge of the lower end face of the shell 3-2-1, and the water inlets are connected with a water pump by virtue of pipelines; the water does not wash the hole wall in the operation.

The walking mechanism 1 is a crawler ground disc, is used for supporting the ground during walking and operation and is driven by a motor. The telescopic mechanism 2-3 is a hydraulic telescopic oil cylinder.

Referring to the attached figures 2 and 3, the impactor 3-2-3 is connected with the lower end of the oil gas bin 3-2-2 by means of a supporting pipe to form an impactor mounting structure, the impactor 3-2-3 is inserted into the supporting pipe in an inverted mode, the impactor is locked by a screw buckle, and a fixing pin is arranged below the impactor.

The power supply mechanism 3-3 is connected with the upper end of the down-the-hole hammer 3-2 by a double-layer sleeve type drill rod 3-1, and comprises: the double-layer casing type drill pipe 3-3-2 comprises an outer pipe and an inner pipe sleeved in the outer pipe, the upper end of the inner pipe is connected with a slurry pump, the lower end of the inner pipe is connected with a slag discharge pipe 3-2-4, and a gas pipe formed by a gap between the inner pipe and the outer pipe is connected between a gas inlet pipe of the oil-gas bin 3-2-2 and an air compressor.

The gas pipe formed between the inner pipe and the outer pipe and the slag discharge pipe formed by the inner pipe complete the effects of gas inlet and slag discharge, the inner pipe is filled with the water slag mixture, the gas pipe formed between the inner pipe and the outer pipe is compressed by high pressure gas, the high pressure air enters the oil gas bin 3-2-2 to ensure that a plurality of impactors can be uniformly pressed for operation, and the high pressure air enters the oil gas bin 3-2-2 to ensure that lubricating oil in the oil gas bin 3-2-2 is vibrated to splash and the air is mixed and carried into the impactors to achieve the effect of lubricating parts inside the impactors.

The power motor outputs power to enable the double-layer sleeve type drill rod 3-1 to rotate to output power, meanwhile, compressed air of the air compressor supplies air to the oil-gas bin 3-2-2 through a gas transmission pipe formed between the inner pipe and the outer pipe, the down-the-hole hammer 3-2 works to crush the stratum, and meanwhile, a mud pump discharges slag materials through an inlet of the slag discharge pipe 3-2-4 and the inner pipe of the double-layer sleeve type drill rod 3-1.

The inner pipe port of the double-layer sleeve type drill rod 3-1 is connected with a screw thread by a sealing O-shaped ring; the port of the outer pipe is connected with a sealing O-shaped ring through a screw thread.

The speed regulation speed reducer comprises a three-ring speed reducer 3-3-2 and a speed regulation mechanism connected with two input shafts of the three-ring speed reducer 3-3-2, and the input end of the speed regulation mechanism is connected with a power motor; the speed regulating mechanism comprises a spline speed regulating shaft 3-3-3, a speed regulating gear set 3-3-4 which is sleeved on the spline speed regulating shaft 3-3-3 and is in gear engagement with an input shaft of the three-ring speed reducer 3-3-2, a deflector rod mechanism matched with the speed regulating gear set 3-3-4 and a positioning mechanism which is arranged between the speed regulating gear set 3-3-4 and the spline speed regulating shaft 3-3-3 in a matching manner. The positioning mechanism comprises annular limiting grooves 3-3-5 uniformly arranged on the spline speed regulating shaft 3-3-3, mounting holes which are arranged on the speed regulating gear set 3-3-4 and are perpendicular to the axis of the spline speed regulating shaft 3-3-3, springs 3-3-7 arranged in the mounting holes by means of positioning plugs 3-3-6 and positioning beads 3-3-8 arranged at one ends of the springs 3-3-7, and the positioning beads 3-3-8 and the annular limiting grooves 3-3-5 are matched to form a positioning structure of the speed regulating gear set 3-3-4 and the spline speed regulating shaft 3-3-3. The shifting lever mechanism comprises adjusting slide bars 3-3-9 which are arranged in parallel with the spline speed regulating shafts 3-3-3 and are positioned between the two spline speed regulating shafts 3-3-3, adjusting sliding sleeves 3-3-10 which are sleeved on the adjusting slide bars 3-3-9, shifting forks 3-3-11 which are arranged at one ends of the speed regulating gear sets 3-3-4, connecting rods 3-3-12 which are connected between the shifting forks 3-3-11 and the adjusting sliding sleeves 3-3-10, and shifting levers 3-3-13 which are arranged on the adjusting sliding sleeves 3-3-10.

The annular limiting grooves 3-3-5 are arranged more than 2, and 3 are arranged in figure 2; the number of the gears of the matched gears is the same as that of the gears of the speed regulating gear set 3-3-4; the speed regulating gear set 3-3-4 moves on the spline speed regulating shaft 3-3-3 through the deflector rod mechanism to be meshed with a proper gear in the matched gear, so that the speed regulating action is completed.

When the drilling machine is used for drilling, the drilling machine can meet various terrains such as soil layers, rock layers, granite, limestone and the like, the power output rotating speeds required by the various terrains are different, and the down-the-hole hammer 3-2 is operated at a proper power output speed through the speed regulating mechanism to break the stratum; the drilling machine can also strike stones through the down-the-hole hammer 3-2, the efficiency of the whole drilling machine for working stones can be improved by 5-8 times, and the drilling can be carried out in a rotary drilling mode when a positive and negative circulation system cannot be used on the limited ground.

Claims

1. A down-the-hole hammer drill comprises a travelling mechanism (1), a variable amplitude supporting mechanism arranged at the front end of the travelling mechanism (1) and a drilling mechanism arranged on the variable amplitude supporting mechanism, wherein the variable amplitude supporting mechanism comprises a short supporting frame (2-1) arranged at the front end of the travelling mechanism (1), a gantry supporting frame (2-2) hinged at the free end of the short supporting frame (2-1) and a telescopic mechanism (2-3) with two ends respectively hinged at the middle part of the gantry supporting frame (2-2) and the travelling mechanism (1), and the drilling mechanism has reciprocating displacement freedom degree on a vertical guide slide rail in the gantry supporting frame (2-2) by means of a hoisting mechanism (4), and is characterized in that: the drilling mechanism comprises a down-the-hole hammer (3-2) arranged on the vertical guide sliding rail and a power supply mechanism (3-3) arranged at the upper end of the down-the-hole hammer (3-2) in a matching way; the down-the-hole hammer (3-2) comprises a convex shell (3-2-1), a slag discharge pipe (3-2-4) which is sleeved in the shell (3-2-1) along the central axis of the shell (3-2-1) and is in an inverted Y shape, an oil-gas bin (3-2-2) arranged in the middle of the shell (3-2-1), an impactor (3-2-3) group arranged at the lower part of the shell (3-2-1) and connected with the oil-gas bin (3-2-2), and water inlet pipes (3-2-5) which are uniformly arranged on the shell (3-2-1) in the circumferential direction; the upper end of the oil-gas bin (3-2-2) is communicated with an air inlet pipe formed by a gap between the upper part of the shell (3-2-1) and the slag discharge pipe (3-2-4).

2. The down-the-hole hammer drill of claim 1, wherein: the power supply mechanism (3-3) is connected with the upper end of the down-the-hole hammer (3-2) by means of a double-layer sleeve type drill rod (3-1) and comprises: the double-layer sleeve type drill pipe (3-1) comprises an outer pipe and an inner pipe sleeved in the outer pipe, the upper end of the inner pipe is connected with a slurry pump, the lower end of the inner pipe is connected with a slag discharge pipe (3-2-4), and a gas pipe formed by a gap between the inner pipe and the outer pipe is connected between a gas inlet pipe of the oil-gas bin (3-2-2) and an air compressor.

3. The down-the-hole hammer drill of claim 2, wherein: the speed regulation speed reducer comprises a three-ring speed reducer (3-3-2) and a speed regulation mechanism connected with two input shafts of the three-ring speed reducer (3-3-2), and the input end of the speed regulation mechanism is connected with a power motor; the speed regulating mechanism comprises a spline speed regulating shaft (3-3-3), a speed regulating gear set (3-3-4) which is sleeved on the spline speed regulating shaft (3-3-3) and is meshed with a matching gear on an input shaft of the three-ring speed reducer (3-3-2), a deflector rod mechanism which is matched with the speed regulating gear set (3-3-4), and a positioning mechanism which is sleeved between the speed regulating gear set (3-3-4) and the spline speed regulating shaft (3-3-3).

4. The down-the-hole hammer drill of claim 3, wherein: the positioning mechanism comprises annular limiting grooves (3-3-5) uniformly arranged on the spline speed regulating shaft (3-3-3), mounting holes which are arranged on the speed regulating gear set (3-3-4) and perpendicular to the axis of the spline speed regulating shaft (3-3-3), springs (3-3-7) arranged in the mounting holes by means of positioning plugs (3-3-6) and positioning beads (3-3-8) arranged at one ends of the springs (3-3-7), and the positioning beads (3-3-8) and the annular limiting grooves (3-3-5) are matched to form a positioning structure of the speed regulating gear set (3-3-4) and the spline speed regulating shaft (3-3-3).

5. The down-the-hole hammer drill of claim 3, wherein: the shifting lever mechanism comprises adjusting slide bars (3-3-9) which are arranged in parallel with the spline speed regulating shafts (3-3-3) and are positioned between the two spline speed regulating shafts (3-3-3), adjusting sliding sleeves (3-3-10) sleeved on the adjusting slide bars (3-3-9), shifting forks (3-3-11) arranged at one ends of the speed regulating gear sets (3-3-4), connecting rods (3-3-12) connected between the shifting forks (3-3-11) and the adjusting sliding sleeves (3-3-10) and shifting levers (3-3-13) arranged on the adjusting sliding sleeves (3-3-10).

6. The down-the-hole hammer drill of claim 1, wherein: the winding mechanism (4) comprises a reel arranged on the travelling mechanism (1), a driving mechanism matched with the reel and a steel wire rope connected between the reel and the drilling mechanism by means of a pulley.

7. The down-the-hole hammer drill of claim 1, wherein: the inlet of the slag discharge pipe (3-2-4) is arranged on the lower end surface of the shell (3-2-1).

8. The down-the-hole hammer drill of claim 1, wherein: the water inlet pipe (3-2-5) is at least provided with 4 groups, the water outlet of the water inlet pipe (3-2-5) is arranged at the edge position of the lower end face of the shell (3-2-1), and the water inlet is connected with the water pump by virtue of a pipeline.