248 results about "Down-the-hole drill" patented technology

The invention discloses a construction method applied to underground mine vertical shaft surrounding rock condition improvement. The construction method comprises the steps that a flat working face is cleaned, a temporary water nest is arranged for drainage, the drilling position is projected, and a down-the-hole drill is debugged; rock drilling is conducted according to the designed angle, direction and depth, propelling pressure is adjusted along with the depth, and cleaning and plugging are conducted after hole forming; grouting pipes with holes are used as pipe sheds to be driven into the holes, and are welded into a whole through annular steel bars; single-liquid-slurry and double-liquid-slurry segmented grouting is adopted, and the grouting pressure is controlled; during construction, grout diffusion and stratum deformation are monitored, after surrounding rock consolidation reaches the standard, weak blasting is matched with a small excavator for excavation, and after acceptance inspection is qualified, reinforcing steel bars are bound, formworks are installed, and concrete is poured. Compared with the prior art, the problems of collapse and water gushing of the vertical shaft under the strong weathering and water-rich geology can be solved, and the defects of insufficient supporting strength, grouting uniformity, construction efficiency and long-term stability in the traditional technology are overcome.

The invention belongs to the technical field of punching equipment, and particularly relates to a special variable-diameter down-the-hole drill bit for large strip mine deep blast hole punching, which comprises a drill bit neck, a drill bit body is fixedly connected to the drill bit neck, first drill teeth are fixedly mounted on the drill bit body, square grooves are formed in the drill bit body in an array manner, and adjusting assemblies are arranged in the square grooves. A square block is arranged in the square groove in a penetrating mode, one end of the square block is fixedly connected with a reaming head, and a frame is arranged in the square block. According to the special variable-diameter down-the-hole drill bit for drilling the deep blast holes in the large strip mine, through the arranged square block and the reaming head, the blast holes with different diameters can be conveniently excavated for use, so that when the explosive consumption is increased and the blasting effect is ensured, the micro motor works to enable the square block to move, and through cooperation of the reaming head after the square block is moved, the drilling efficiency is improved; when the drill bit body rotates, the reaming head can be driven to do circular motion, the area of a digging and penetrating site of the drill bit body is enlarged through the reaming head, and the purpose of enlarging and adjusting the diameter of a dug blast hole is achieved.

The invention discloses a construction method for excavating and protecting a slope with a dangerous terrain and poor self-stability by utilizing a step-by-step layering method, which comprises the following steps of: excavating each stage of slope according to a design drawing in a layered manner according to protection, excavating and protecting from top to bottom, and taking the excavated bottom surface of each layer as a protection construction platform, so as to realize full-mechanical construction; erecting of a scaffold and a down-the-hole drill platform is omitted, and a crawler-type down-the-hole drill is adopted for drilling to avoid aloft work; and in the drilling process, lower-layer redundant soil and stone cleaning, anchor cable manufacturing, anchor cable mounting, frame beam pouring, grouting and other construction operations are synchronously carried out. According to the step-by-step layered excavation mode, the actual unprotected height of slope excavation is reduced, one layer of slope excavation is protected one layer of slope excavation, rapid construction is achieved, economy is achieved, and safety is guaranteed.

The invention discloses a medium-wind-pressure down-the-hole drill and a preparation method thereof. The preparation method comprises the following steps that (A) round steel is subjected to hot forging treatment, and then a down-the-hole drill bit steel billet is obtained; (B) machining the down-the-hole drill billet obtained in the step (A) to obtain a down-the-hole drill matrix with a spline; (C) the down-the-hole drill matrix obtained in the step (B) is heated to 850-870 DEG C for vacuum quenching; (D) heating the down-the-hole drill matrix obtained in the step (C) to 460-480 DEG C, and carrying out vacuum tempering; (E) carrying out surface quenching on the spline part of the basal body of the down-the-hole drill obtained in the step (D), wherein the hardening depth is 1.5-2.5 mm; and (F) the down-the-hole drill base body obtained in the step (E) is subjected to low-temperature tempering at the temperature of 130-220 DEG C. The preparation method has good economical efficiency, the prepared down-the-hole drill has excellent wear resistance and good impact fatigue resistance, and the service life of the product is prolonged.

The invention provides an automatic rod changing system and method of a down-the-hole drill and the down-the-hole drill. The automatic rod changing system of the down-the-hole drill comprises a rotary head and a rod changing device, the propelling driving device is used for driving the rotary head to move up and down along the propelling beam; the drill rod warehouse is used for storing drill rods; the drill rod clamping device is used for clamping a drill rod; the drill rod moving device can clamp the drill rods, and the drill rod moving device is at least used for carrying the drill rods in the drill rod warehouse to the position between the rotary head and the drill rod clamping device; the automatic rod changing button is used for responding to the operation of an operator to generate a rod changing instruction; the controller is respectively connected with the rotary head, the propelling driving device, the drill rod clamping device, the drill rod moving device and the automatic rod changing button; the controller is used for controlling the rotation head, the propelling driving device, the drill rod clamping device and the drill rod moving device to move based on the rod changing instruction so as to execute automatic rod changing operation. The automatic rod replacing system of the down-the-hole drill can automatically carry out rod replacing operation, the rod replacing efficiency is improved, and the labor cost and the safety risk are reduced.

The down-the-hole drill comprises an execution end, a controller, a cab operating system and a remote controller, the execution end comprises a crawler-type walking vehicle, the crawler-type walking vehicle is connected with a propelling beam mechanism through a mechanical arm, the controller is installed on the crawler-type walking vehicle, and the cab operating system is connected with the remote controller. The crawler-type walking vehicle, the mechanical arm and the propelling beam mechanism are all controlled by the controller, the cab operating system is integrated in a cab of the crawler-type walking vehicle, operation of the execution end can be manually controlled near the ground by operating the cab operating system, and remote control over the execution end can be achieved by operating the remote controller. According to the invention, near-ground manual control and remote control functions are supported, the dual control mode enables an operator to flexibly select a control mode according to actual working conditions, the convenience and flexibility of operation are improved, and meanwhile, the remote control function reduces the risk that the operator is directly exposed in a severe working environment, and the safety of operation is enhanced.

The utility model relates to a swiveling head for a down-the-hole drill. The swiveling head comprises an input gear shaft, an output gear, a main shaft and a gear box. The input gear shaft is connected to the power system which is used for driving the input gear shaft to rotate. The output gear is meshed with the input gear shaft; the output gear is sleeved on the main shaft; the output gear is used for driving the spindle to rotate; the central shaft of the input gear shaft is parallel to the central shafts of the output gear and the main shaft; the gear box provides mounting space for the input gear shaft and the output gear; the input gear shaft and the main shaft are rotationally connected with the gearbox; the gearbox is provided with a third through hole used for disassembling the input gear shaft. Through the pair of input gear shafts, the torque of the output gear is increased, and the service life of the input gear shafts is prolonged; through reasonable layout of the input gear shaft and the output gear, gears of the gear box are effectively reduced, and the gear box is lighter.

The invention provides a method and a system for determining a rock drillability grade value of a down-the-hole drill. The system comprises a data acquisition module and an industrial personal computer, the data acquisition module is used for acquiring while-drilling parameters of the down-the-hole drill; the while-drilling parameters comprise drilling axial force, drilling torque, impact force and impact frequency; the industrial personal computer is electrically connected with the data acquisition module and can acquire parameters while drilling; the industrial personal computer can also calculate the drilling specific energy of the down-the-hole drill according to the while-drilling parameters and determine the drillability grade value of the rock mass in real time; according to the scheme provided by the invention, the drilling working parameters and the change of the drilling machine rate can be accurately obtained in real time according to the measurement-while-drilling system, so that the rock drillability grade value and lithology judgment are determined in the field drilling process.

The vehicle body leveling mechanism of the heavy down-the-hole drill comprises a drill chassis and a track frame, installation frames are welded to the left side and the right side of the drill chassis respectively, leveling oil cylinder assemblies are connected to the installation frames in a rotating mode, the lower portions of the leveling oil cylinder assemblies are connected to the track frame in a rotating mode, and the number of the leveling oil cylinder assemblies is two. According to the large-scale down-the-hole drill, the gravity center position of the large-scale down-the-hole drill is adjusted by synchronously controlling the oil cylinders to stretch out and draw back through the leveling oil cylinders and the electromagnetic valve assemblies, leveling is achieved, and the large-scale down-the-hole drill is suitable for large-angle climbing operation by adjusting the gravity center position of the large-scale down-the-hole drill.

The utility model provides a hammering type rotatable drill bit for a down-the-hole drill. The hammering type rotatable drill bit comprises a drill bit shaft; a vent hole running axially along the center of the drill bit shaft; the horizontal gas channel guide pipe is connected with the exhaust hole; and a plurality of gas slot channels. Each gas passage conduit is embedded in the drill bit front drilling surface and extends from the level of the vent hole to the peripheral edge of the drill bit. Each gas slot channel extends outwardly from a radial location around a protruding drilling portion of the bit front middle region to a peripheral edge of the bit across a bit front drilling surface aft in a stepped shape. A portion of each gas channel conduit merges with the gas slot channel thereabove from a periphery of the intermediate protruding drilling portion to a portion of the peripheral edge of the drill bit to form a merged gas channel conduit-gas slot channel. The design can guide flushing air to horizontally and stably pass through the front drilling surface of the drill bit without any interference on the drilling ground, and does not weaken the drill bit structure at the same time.

The utility model provides a down-the-hole drill bit. The down-the-hole drill bit comprises a drill bit head part, a drill bit shoulder part and a drill bit rod part which are sequentially arranged in the axial direction. A first powder discharging groove is formed in the periphery of the drill bit head part, a first connecting hole is formed in the drill bit head part, and the first powder discharging groove is communicated with a central channel of the drill bit rod part through the first connecting hole; the drill bit shoulder part comprises a shoulder part body and a step which is formed by extending outwards from the periphery of the shoulder part body; a second powder discharging groove is formed in the periphery of the step, a second connecting hole is formed in the drill bit shoulder part, and the second powder discharging groove is communicated with the center channel through the second connecting hole. Meanwhile, the utility model further provides an impactor. Compared with the prior art, the down-the-hole drill bit and the impactor can better prevent the drill bit from being buried in a construction hole.

The externally-hung down-the-hole drill device comprises a drill rod, an excavator and an excavating arm, and the drill rod is movably connected with the front end of the excavating arm in parallel through a special-shaped connecting part; the rear end of the digging arm is connected with the digging machine; one end of the special-shaped connecting part is in a cylindrical opening shape; two groups of connecting pieces are respectively arranged at the other end of the special-shaped connecting part; one end of the special-shaped connecting part is sleeved with a turntable; the turntable is provided with a plurality of screw holes along the circumference; the rotary disc is in butt joint with the middle position of the rod wall of the drill rod and is fixedly installed in the mode that a plurality of bolts penetrate through the screw holes. A group of connecting pieces of the special-shaped connecting part are movably connected with the front end of the digging arm through a rotating shaft a; the upper side of the front end of the digging arm is movably connected with one end of a hydraulic cylinder B through a rotating shaft d; and the other end of the hydraulic cylinder B is movably connected with the other group of connecting pieces of the special-shaped connecting part through a rotating shaft b. The device is simple in structure, all parts are compactly connected, daily maintenance and overhaul are facilitated, and the maintenance cost and time are reduced.

The utility model belongs to the technical field of engineering machinery, and discloses a rotary speed reducer for a down-the-hole drill, which comprises a shell component, a speed reducing mechanism and a main shaft, the speed reducing mechanism is arranged in the shell component, the main shaft is rotatably connected to the shell component, a first end of the main shaft is connected with the speed reducing mechanism, and a second end of the main shaft extends out of the shell component. The main shaft is axially provided with a first air channel penetrating to the second end of the main shaft, the side wall, located in the shell assembly, of the main shaft is provided with a second air channel communicated with the first air channel, the shell assembly is provided with an air cavity and an air conveying hole communicated with the air cavity, and the second air channel is arranged in the air cavity in a communicated mode. According to the rotary speed reducer for the down-the-hole drill, the arrangement structure of the air channel in the main shaft is improved, the overall size of the speed reducer is reduced, the arrangement space of an internal speed reducing mechanism is prevented from being affected, high-pressure gas can be reliably and effectively conveyed, the gas leakage probability is reduced, and the service life of the speed reducer is prolonged. And the reliability and the stability of the high-pressure gas responding to the impactor are ensured.

The invention provides a circulating grouting advanced small guide pipe construction technology, and belongs to the technical field of surrounding rock construction, and the circulating grouting advanced small guide pipe construction technology comprises the following steps: S1, adopting a down-the-hole drill to form a double-ring hole in a tunnel wall; s2, inserting the slurry jetting pipe into the small guide pipe, exposing the tail end and connecting a slurry inlet pipe, connecting a grouting port of the small guide pipe with a steel gate valve for sealing, and connecting the tail part with a slurry return pipe through a three-way valve; s3, the prepared slurry enters a slurry storage barrel through a slurry inlet pipe, a slurry jetting pipe, a small guide pipe, a surrounding rock crack and a slurry return pipe, grouting is conducted on the tunnel vault from the two sides in two sequences, cement slurry is poured at the initial pressure of 0.5 MPa, stepped pressure increasing is conducted, and pressure increasing is stopped till the final pressure is reached; s4, in the grouting process, grouting data are collected in real time, and grouting parameters are regulated and controlled; and S5, after grouting is finished and mechanical hole sealing is conducted, manual filling and hole sealing are conducted, and the problem that the reinforcing effect of tunnel vaults and other parts is not ideal due to the fact that it is difficult to ensure that grout is evenly distributed in surrounding rock cracks through a traditional technology is solved.

1. The name of this design product: down-the-hole drill. 2. Application of this product design: used for drilling operations before underground mines and engineering blasting. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model relates to the technical field of operation machinery, and discloses a ladder stand device for a down-the-hole drill and the down-the-hole drill. The crawling ladder device for the down-the-hole drill comprises a first pedal, a second pedal, a third pedal and a fourth pedal, the first pedal is arranged on the dust collecting pipe mounting side of an upper vehicle platform of the down-the-hole drill, and the first pedal covers a dust collecting pipe; the second pedal is arranged on the dust collecting pipe mounting side and located above the first pedal, and the second pedal and the first pedal form a step structure for getting on and off the vehicle. The first cover plate is arranged above the dust collecting pipe, so that a worker can be prevented from directly stepping on the dust collecting pipe in the process of getting on and off the vehicle, the dust collecting pipe is protected, and the service life of the dust collecting pipe is prolonged. Besides, compared with the mode that step structures are arranged on the left side and the right side of the getting-on platform, and the first pedal and the second pedal are arranged on the dust collecting pipe installation side of the getting-on platform, the width of the down-the-hole drill can be prevented from being increased, and the influence on transportation of the down-the-hole drill is reduced.

The present invention relates to the technical field of slope construction, and in particular to an anchor driving machine for slope fixing construction. The anchor drilling machine body includes a mobile frame, a rotating plate is rotatably connected to the mobile frame, a straight hole is opened on the rotating plate, an electric push rod I is symmetrically rotatably connected to the mobile frame, and the telescopic rod of the electric push rod I is rotatably connected to the rotating plate, and the electric push rod I is used to drive the rotating plate to rotate to adjust the installation angle of the hollow anchor rod. The present invention can automatically intermittently discharge multiple hollow anchor rods by controlling the rotation of the rotating cylinder, and at the same time, through the cooperation of the sliding plate and the clamping rod, the falling hollow anchor rod can be received, positioned and supported and limited, and then the next hollow anchor rod is driven by the down-the-hole drill to rotate and move to the right, so that the connecting pipe on the next hollow anchor rod can be automatically threaded with the left end of the previous hollow anchor rod, without the need for manual docking of the anchor rods, thereby improving work efficiency.

The invention relates to the technical field of down-the-hole drill ball tooth drill bit wear measurement, in particular to a down-the-hole drill ball tooth drill bit wear value real-time measurement method and system, and the method comprises the steps: carrying out the optimization and registration of an initial three-dimensional model, and obtaining an overall wear quantized value of a down-the-hole drill ball tooth drill bit; analyzing a mapping relation between the while-drilling parameters and the overall wear quantized value, and constructing a database between the while-drilling parameters and the drill bit wear value; deriving a dimensionless variable according to a dimensional analysis method and a database, and performing combined screening on the dimensionless variable, a second-order polynomial and a cross term to determine a dimensionless variable combination influenced by drill bit wear; and substituting the dimensionless variable combination into the multiple linear regression model to establish a mathematical relationship model between the drill bit wear and the while-drilling parameters, thereby realizing the real-time measurement of the wear value of the ball tooth drill bit of the down-the-hole drill. According to the method, non-dimensional variables of the while-drilling parameters are obtained based on dimensional analysis, the model is built in combination with multiple linear regression, the wear value of the ball tooth drill bit of the down-the-hole drill is measured in real time, and construction efficiency and safety are improved.

The utility model relates to the technical field of mining devices, in particular to a down-the-hole drill with a positioning function, which comprises a base, the left side of the base is fixedly connected with a connecting block, the right side of the top of the base is fixedly connected with the bottom end of a support rod, and the top end of the support rod is provided with a lifting component. The three positioning rods distributed at the bottom in an equiangular mode are driven to ascend and descend through the positioning assembly, so that the positioning rods make contact with the ground, a user can conveniently confirm and position the drilling position, and compared with a traditional mode that a distance is reserved between a drill bit and the ground, and positioning completely depends on visual inspection, more accuracy is achieved; the gear motor is started to drive the main bevel gear and the rotating sleeve to rotate, the main bevel gear drives the auxiliary bevel gear to rotate, the auxiliary bevel gear rotates to drive the cam to continuously extrude the drilling barrel, the drilling barrel is made to move up and down, the structure is beneficial to smashing hard objects when the hard objects are encountered, and the probability that the drilling barrel is damaged is reduced.

This utility model relates to a telescopic down-the-hole drill bit guide device, belonging to the technical field of drill bit auxiliary structures. The telescopic down-the-hole drill bit guide device includes: a guide bushing and a locking mechanism. The guide bushing has a chip removal groove on its side end, and ball bearings staggered with the chip removal groove are embedded in the side end of the guide bushing. The top of the guide bushing has a countersunk hole, and the interior of the guide bushing has a positioning groove communicating with the countersunk hole. The locking mechanism includes a bolt inserted into the countersunk hole, and the side end of the bolt head has an installation cavity communicating with the positioning groove. The locking block and the positioning groove are always positioned on the side of the bolt facing away from the axis of the guide bushing, ensuring that centrifugal force pushes the locking block outward during drill bit rotation, allowing it to penetrate deeper into the positioning groove and enhancing the bolt locking effect. This dynamic self-reinforcing mechanism effectively prevents bolt loosening, eliminating the need for adhesive injection to prevent loosening and removing residual adhesive from the source.

The utility model discloses a one-key rod changing system based on an SD65 down-the-hole drill, which comprises a propelling beam, an encoder arranged at the top of the propelling beam, a propelling hydraulic cylinder arranged inside the upper end of the propelling beam, a rotary hydraulic motor arranged on the propelling beam, a gyrator connected onto the rotary hydraulic motor, a buffer, a transition joint and a drill rod connected onto the gyrator, the propelling beam is provided with a rod replacing assembly used for adding and detaching rods, and the lower end of the propelling beam is provided with a connecting assembly used for connecting or detaching the two drill rods. Through a series of actions of the connecting assembly, the overturning hydraulic motor, the clamp holder and the hydraulic slewing mechanism, the proximity sensor is used for accurately positioning, the encoder is used for reading a displacement value, and the electric-hydraulic proportion of a rotating oil way and the electric-hydraulic proportion of a propelling oil way are used for controlling the smoothness of connecting a drill rod and withdrawing a drill thread in a matched mode. Connection or separation of the drill rods is completed through mutual cooperation, one-key rod replacement without manual operation is achieved, working efficiency is improved, cost is reduced, and safety is improved.

The utility model relates to the technical field of mining devices, in particular to a down-the-hole drill with a positioning function for mining tunneling, which comprises a base, a fixing frame is mounted on the top surface of the base, an operating rod is mounted on the inner side of the fixing frame, and a drill main body is mounted on the side wall of the operating rod; a movable groove is formed in the left side wall of the base; a positioning structure is mounted in the movable groove, the positioning structure comprises a movable plate, the right end of the movable plate is slidably mounted on the inner side of the movable groove, a through groove is formed in the top surface of the movable plate, and a storage groove is formed in the inner wall of the through groove. The positioning ring descends to be attached to the ground through cooperation of the guide frame and the spring, it can be guaranteed that the positioning ring vertically moves on the lower side of the drilling machine body so as to position the drilling position, meanwhile, the movable plate can move in the movable groove, the positioning structure can be stored, and the situation that the positioning effect is affected due to the fact that the positioning structure is deformed by external force is avoided.

The invention relates to the technical field of photovoltaic support miniature cast-in-place pile construction, and discloses a photovoltaic support miniature cast-in-place pile construction method which comprises a crawler-type down-the-hole drill, an air compressor, a drill hole, a sleeve, a reinforcement cage, pouring concrete, a lower stand column, a pile casing and a concrete vibrating rod. Compared with a traditional rotary drilling rig and a percussion drilling rig, the drilling rig has the advantages that hole forming is achieved through dry operation, mud pits do not need to be constructed, damage to vegetation and soil of the mountain land is reduced, construction noise is low, green construction is achieved, and the drilling rig is suitable for large-scale popularization and application. The device can effectively drill holes in both hard rocks and soft soil layers, is particularly suitable for mountainous rugged terrains, is simple in structure and low in manufacturing cost, can simultaneously arrange a plurality of devices for simultaneous operation, improves the operation efficiency, and saves the construction period.

The utility model belongs to the technical field of down-the-hole drills, and discloses a driving device and a down-the-hole drill. The driving device comprises a hydraulic motor and a speed reducer, the speed reducer comprises a shell, a multi-stage planetary gear train structure and an output shaft, the hydraulic motor is arranged outside the shell, the multi-stage planetary gear train structure is arranged in the shell, and the multi-stage planetary gear train structure comprises a plurality of planet rows which are connected in series; a driving shaft of the hydraulic motor is in driving connection with an input piece of the multi-stage planetary gear train structure, and an output piece of the multi-stage planetary gear train structure is in transmission connection with the output shaft. Multi-stage speed reduction and torque increase of the speed reducer are realized through a multi-stage planetary gear train structure, so that the requirements of different working conditions of the down-the-hole drill can be met only by adopting a high-speed and small-displacement motor, the mechanical efficiency of a hydraulic motor is improved, the working oil consumption of the whole machine is reduced, the oil tank capacity of the whole machine is reduced, and the cost of the whole machine is reduced; in addition, the multi-stage planetary gear train structure is compact in overall structure, high in rigidity and high in impact resistance, and the service life of the driving device is prolonged.

The down-the-hole hammer comprises an outer cylinder and further comprises an impact assembly used for impacting a down-the-hole drill, the impact assembly comprises a large piston, a small piston and a connecting structure, a first inner cylinder is arranged in the outer cylinder, the large piston is slidably connected into the first inner cylinder, a second inner cylinder is arranged in the outer cylinder, and the small piston is slidably connected into the second inner cylinder. The connecting structure is used for separation and connection of the large piston and the small piston, when the large piston moves towards one side of the down-the-hole drill, the large piston moves to be connected with the small piston and impacts the down-the-hole drill, and when the large piston moves towards one side away from the down-the-hole drill, the large piston moves to be connected with the small piston and impacts the down-the-hole drill. The large piston firstly drives the small piston to move towards the side away from the down-the-hole drill to the first position, so that after the small piston is separated from the large piston, the small piston moves towards the side of the down-the-hole drill to impact the down-the-hole drill. Through the double-impact assembly of the large piston and the small piston, two times of independent impact, namely impact of the large piston driving the small piston and independent springback impact of the small piston, are achieved, and the impact frequency and the crushing efficiency of the down-the-hole drill are improved.

The invention discloses a combined down-the-hole drill bit capable of drilling and chambering. The combined down-the-hole drill bit is composed of a tool rest 1, a tool bit 2 and a locking and clamping device 3. The drill bit is installed on the down-the-hole drill, the drill bit locking and clamping device 3 is in the state of locking the tool bit 2, the drill bit has the same function as a common down-the-hole drill bit, a drill rod rotates while drilling in the drilling process, and a round hole 4 is formed in rock or concrete. When the drilling depth reaches the designed depth, the drilling machine is controlled to only drill without rotating, at the moment, the drill bit forms a rectangular pit 41 at the bottom of the hole, and steps 42 are formed on the two sides of the long edge of the rectangular pit. Drilling continues, a trigger bottom cap 321 at the bottom of the drill bit is extruded by a hole bottom step 42, the locking and clamping device 3 is unlocked, and the drill bit tool bit 2 can be unfolded after unlocking. After the machine is stopped and the drill rod is lifted, the drill rod is rotated by an angle, so that the bottom of the tool bit 2 falls on a rectangular hole step 42, a drilling machine is started to only drill without rotating, the drill rod is manually controlled to rotate, and the process is repeated until the step 42 is chiseled away by the tool bit, and then normal drilling operation is carried out. And continuously drilling to form a reaming section to the designed length.

The application relates to the technical field of slope construction, and provides an adjustable support for a down-the-hole drill on a slope. The adjustable support is used for linear drilling operation on an inclined slope surface with continuously changing slope, wherein the fixed frame is a frame structure, effectively reducing the overall weight of the support; at least three sliding legs are vertically detachably arranged on the fixed frame, and each sliding leg is in contact with the slope surface through a sliding cover, effectively increasing the contact area of the support and the slope, evenly distributing the weight of the support, reducing the single-point contact pressure of the support and the slope, and avoiding sinking of the support on the uneven slope; at least three inclined adjustment legs are used for adjusting the inclination of the fixed frame through telescopic movement, the support is adaptively adjusted to the angle of the slope with continuously changing slope, the support can adapt to the continuously changing slope, and the down-the-hole drill arranged on the support can also perform linear drilling on the continuously changing slope, thereby effectively avoiding drilling inclination and improving drilling quality.

The down-the-hole roller bit comprises a bit body, a channel for water to flow is formed in the bit body, the front end, facing the bit body, of the channel is divided into a plurality of flow channels and penetrates through the front end of the bit body, a plurality of first alloy teeth are installed on the end face of the front end of the bit body, and the down-the-hole roller bit further comprises a reaming sleeve and a locking assembly; the broaching sleeve is coaxially arranged at the front end of the drill bit body in a sleeving mode, a chamfering face is arranged at the front end of the broaching sleeve, a plurality of second alloy teeth are installed on the chamfering face in the circumferential direction, and the locking assembly locks the broaching sleeve on the drill bit body. The reaming sleeve is installed on the drill bit body, the diameter of the down-the-hole drill can be increased, the whole drill bit does not need to be replaced, and a drilled hole can be conveniently reamed through the down-the-hole drill.

The application discloses a kind of equipment for fixing teeth of down-the-hole drill bit, including structural frame, the structural frame is mounted for positioning drill bit tooth fixing tool, tooth fixing alignment feeding mechanism is arranged above tooth fixing tool, and pressure cylinder for pressing alloy tooth into drill bit is matched with tooth fixing alignment feeding mechanism, after the drill bit is fixed on tooth fixing tool, the area of the drill bit to be installed tooth hole is directly above the working area, the structural frame is mounted with rotating mechanism, the rotating mechanism includes vertically arranged rotating shaft and rotating disc coaxially mounted on rotating shaft and rotatable around rotating shaft, a plurality of stations are symmetrically arranged on rotating disc with rotating shaft as center, a type of tooth fixing alignment feeding mechanism is mounted on each station, and rotating disc sends a type of tooth fixing alignment feeding mechanism to the working area every time a station is rotated;The application solves the gap problem between alloy tooth and tooth hole after pressing tooth, and can greatly improve the quality of drill bit tooth fixing, thereby improving the reliability of down-the-hole drill bit.