177results about "Reciprocating drilling machines" patented technology

The utility model relates to a raking pile rock-socketed percussion drill hole-forming barrel drill bit, which belongs to the technical field of barrel drill bits, and comprises a rock percussion drill hole-forming barrel drill bit body, a rotary drilling machine, a connecting shaft, a flange plate and a bolt, and a reinforcing mechanism is arranged at the top of the rock percussion drill hole-forming barrel drill bit body. The reinforcing mechanism comprises a reinforcing sleeve fixedly installed on the peripheral wall of the connecting shaft. According to the raking pile rock-socketed percussion drill hole-forming barrel drill bit, the overall compressive strength of a connecting shaft is enhanced through the effect of a reinforcing sleeve, a connecting plate is fixed through the effect of an arc-shaped mounting base and a screw, and meanwhile an arc-shaped supporting plate is mounted in the reinforcing sleeve; part of pressure is shared to the rotary drilling machine under the action of the arc-shaped supporting plate, the supporting rod and the connecting plate, the influence of gravity and pressure on the connecting shaft when the drill bit body of the rock impact drill hole-forming barrel drill inclines is reduced, and therefore the service life of the connecting shaft is prolonged, and the stability of the connecting shaft is improved.

The invention relates to the technical field of high-altitude drilling operation, in particular to a modular quick-connection vibroflotation guide rod and a using method thereof.The modular quick-connection vibroflotation guide rod comprises an upper guide rod and a lower guide rod, a male connector assembly is arranged at the bottom end of the upper guide rod, the modular quick-connection vibroflotation guide rod comprises a male connector body and a connecting ring rotationally arranged outside the male connector body in a sleeving mode, and a clamping piece is arranged on the connecting ring in a protruding mode. And an axial guide key groove and an L-shaped guide groove are formed in the female joint body of the lower guide rod. During insertion, the axial guide key groove limits rotation of the male joint main body, and pure axial blind insertion of an internal pipeline is guaranteed; meanwhile, the clamping piece slides in along the L-shaped guide groove, the connecting ring is forced to rotate in the radial direction and is matched with the inner and outer conical surfaces to achieve zero-clearance locking. When the pipe is pulled out, the unlocking sliding sleeve is upwards and linearly lifted, the sliding pin forces the clamping piece to be unscrewed and unlocked, and meanwhile the internal micro-channel one-way valve is triggered to introduce high-pressure fluid to wash silt. Dynamic and static separation and manual-free one-key unlocking in the inserting and pulling process are achieved, and the reliability and efficiency of ultra-deep vibroflotation construction are greatly improved.

The vibration absorption device comprises a shell and a buffer piston which are coaxially arranged, the buffer piston is sleeved with the shell, and the vibration absorption device further comprises at least two buffer cavities, an oil inlet way and a balance valve which are distributed on the periphery of the buffer piston at intervals in the axial direction; the oil inlet path is arranged on the shell and is communicated with at least one buffer cavity; the buffer cavities are communicated through the balance valves, the balance valves are used for changing the communication relation between the buffer cavities according to the pressure difference between the buffer cavities, the buffer cavities can be communicated in time, the buffer cavities needing oil supplementing are subjected to oil supplementing, sudden pressure drop of the cavities is avoided, and the phenomena of negative pressure and cavitation are avoided. Damage to parts in the rock drill is reduced, and the vibration absorption effect is improved. The second aspect provides a rock drill comprising the vibration absorption device in the first aspect, an impact piston coaxially arranged in the buffer piston in a sliding mode, a bit shank coaxially arranged on the front side of the impact piston, and a plug buffer spacer bush arranged on the impact piston in a sleeving mode and located between the buffer piston and the bit shank.

The tunnel intelligent drilling robot comprises a mechanical arm and a connecting base fixedly arranged at the tail end of the mechanical arm, the connecting base is connected with an electric hammer mounting support, an electric hammer is fixedly mounted in the electric hammer mounting support, and a drill bit of the electric hammer extends out of the electric hammer mounting support in the axial direction; and an elastic buffer assembly is arranged between the connecting seat and the electric hammer mounting bracket and is used for absorbing rigid collision during drilling. The device has the beneficial effects that the service life of the device can be prolonged, the drilling precision is guaranteed, and automatic and high-precision drilling is achieved based on visual perception.

An electro-crushing drill bit is to drill a wellbore, wherein the electro-crushing drill bit comprises a bit body; a ground structure coupled to the bit body; and at least one electrode coupled to a power source and the bit body, the at least one electrode positioned within the ground structure, wherein the at least one electrode comprises, a fixed plate; and a movable plate that is movable relative to the fixed plate.

The utility model discloses a convenient-to-disassemble type movable grouting drilling machine which is characterized in that the side surface of a base is fixedly connected with fixing blocks and stop blocks, the fixing blocks are provided with through holes, four fixing blocks are arranged on the same face of the base, a rotating shaft is arranged in the through holes in a penetrating mode, the side surface of the rotating shaft is rotatably connected with a rotating block, and the rotating block is located between the two fixing blocks. A connecting block is fixedly connected to the lower surface of the rotating block, a supporting column is fixedly connected to the side surface of the connecting block, fixing columns are fixedly connected to the side surfaces of the base and the supporting column, a first rotating ring and a second rotating ring are rotationally connected to the fixing columns correspondingly, and second limiting rings are arranged at the ends, away from the base, of the first rotating ring and the second rotating ring; and the second limiting ring is in threaded connection with the fixing column, and an electric telescopic rod is arranged between the first rotating ring and the second rotating ring, through the structure, the whole device can be conveniently and stably supported in the using process, and the situation that the whole device is unstable and shifts due to shaking of a moving mechanism in the using process, and consequently the device is damaged is avoided.

The high-precision hydraulic rock drill rapping rod limiting structure comprises a hydraulic cylinder body and a hydraulic cylinder rear end cover connected to the tail end of the hydraulic cylinder body, a rapping rod is arranged at the axis position in the hydraulic cylinder body, the tail end of the rapping rod is a conical surface, and the inner side of the hydraulic cylinder rear end cover is connected with a main limiting seat; a guide hole is formed in the axis position of the main limiting seat, an annular oil storage cavity is formed in the bottom in the main limiting seat, the aperture of the guide hole is matched with the outer diameter of the tail end of the rapping rod, a conical damping cavity matched with the tail of the rapping rod is formed in the bottom of the guide hole, and a miniature radial damping hole is formed in the top of a cone of the conical damping cavity. And the miniature radial damping holes are communicated with the annular oil storage cavity. According to the design, the conical buffer head is matched with the conical damping cavity, so that gradually-increased hydraulic damping force is formed, and stable speed reduction is achieved. The limiting shoulder is used for making contact with and compressing the disc spring set, nonlinear and high-rigidity buffering force is provided, stable output of impact energy is guaranteed, and noise and harmful vibration are remarkably reduced.

The invention discloses a piston cushion chamber structure, which relates to the technical field of hydraulic cylinder buffering, and comprises a cylinder body and a reversing valve, and the reversing valve is fixed on the cylinder body through a bolt. According to the piston buffer cavity structure, by arranging a series-connection type multi-stage buffer system composed of the first buffer mechanism and the second buffer mechanism, when the piston body conducts over-travel motion, first-stage buffer is conducted through a first spring of the first buffer mechanism, part of impact energy is absorbed, and then hydraulic buffer of the second buffer mechanism is triggered immediately; through cooperation of the oil pressing ring and the buffering sleeve, variable secondary buffering is achieved through back pressure generated by hydraulic oil throttling, under the limiting condition, a closed oil cavity can be formed, third-level buffering is achieved through incompressibility of hydraulic oil, and huge energy of over-travel can be stably and efficiently absorbed and dissipated in a multi-level progressive buffering mode. The device is prevented from being damaged due to over-stroke operation, and the service life of the device is effectively prolonged.

Rock drilling machine (10) comprising a hydraulic percussion unit (11) including a percussion piston (12) for providing percussive impulses to a shank adapter (13) of the rock drilling machine (10) in a forward direction (Dfwd), the shank adapter (13) being configured to be connected to a drill string (6) during operation. A hydraulic damper unit (14) is arranged for damping the recoil movement of the shank adapter (13) in the backward direction (Drev), and a hydraulic extractor unit (16) is arranged for actuating the shank adapter (13) in the backward direction (Drev). The rock drilling machine comprises an inlet coupling (Cp) for connection to a pressure source (P) of pressurised hydraulic fluid and an outlet coupling (CT) for connection to a tank (T) for non-pressurised hydraulic fluid. Further, the inlet coupling (Cr) is connectable to both the hydraulic damper unit (14) and the hydraulic extractor unit (16). The disclosure also relates to a drill rig comprising such a rock drilling machine. (FIG. 4)

Cutters for a downhole drill bit can be formed by providing a catalyst-free synthesized polycrystalline diamond (PCD) having a cross-sectional dimension of at least 8 millimeters; providing a substrate comprising tungsten carbide; and attaching the synthesized PCD to the substrate comprising tungsten carbide to form a PDC cutter.

The invention provides a deep and thick backfill foundation pile planting construction method, and belongs to the technical field of backfill foundation pile construction, and the method comprises the following steps: S1, pre-drilling in a large-particle-size backfill layer by using a down-the-hole pile hammering machine, and synchronously burying a pile casing in the pre-drilling process; s2, the down-the-hole hammer construction equipment is moved away, and soil body backfilling is conducted in the pre-drilled hole; s3, a percussion drilling machine is adopted for percussion drilling in the hole with the soil body backfill; s4, after the hole deeply penetrates through the large-particle-size backfill layer, a special drilling machine with a grouting function is adopted to replace a percussion drilling machine to conduct drilling in a conventional soil layer in the hole; s5, after the special drilling machine drills a hole to a preset depth, the special drilling machine lifts a drill rod from the interior of the drill hole and injects curing slurry for stirring at the same time; and S6, before the solidification slurry in the hole is not solidified, the precast pile is implanted into the solidification slurry in the hole. The method has the beneficial effects that the precast pile construction efficiency and effect are improved, the pile forming quality is guaranteed, and many defects existing in a traditional construction technology are overcome.

The present invention pertains to a system and method to determine rock fracturing during the breaking process, specifically when using rock breakers in the mining industry. More precisely, the present invention relates to a system and a method that, using sensory information composed of images, point clouds, or both, automatically determines, in real time, whether a rock which a rock breaker is attempting to break is fractured or not.

The utility model provides a full-hydraulic variable-frequency rock drill which comprises a cylinder body, a piston and a reversing valve, and the piston is inserted into the cylinder body in a sliding mode. A first oil groove, a feedback oil channel, an oil drainage groove and a second oil groove are sequentially formed in the cylinder body and located on the periphery of the piston in the axial direction, and the oil drainage groove is communicated with an oil tank. The reversing valve comprises a reversing valve body and a reversing valve element, and the reversing valve element is installed in a valve hole of the reversing valve body in a sliding mode. A hollow reversing valve element structure is adopted, input hydraulic oil is adopted to establish a weak balance state on the two sides of the reversing valve element, the reversing operation of the reversing valve element is achieved in a single-side oil way control mode, the self movement inertia of the reversing valve element is small, response is rapid and sensitive, and the defects that a traditional rock drill is lagged in control, asynchronous, poor in control stability and the like are overcome. And the vibration frequency is low.

A down-the-hole hammer includes a barrel having a longitudinal axis and defining a proximal chamber and a distal chamber, a piston slidable within the barrel between the proximal chamber and the distal chamber, and a flow control valve including a valve member slidable within the barrel along the longitudinal axis to control airflow through the piston. In a first position of the valve member, the valve member allows air flow from a proximal end of the barrel through the piston and into the distal chamber. In a second position of the valve member, the valve member allows air flow around the valve member and into the proximal chamber.

The invention discloses a tunnel drilling device capable of achieving multi-dimensional angle adjustment and a drilling method.The tunnel drilling device comprises a multi-dimensional adjustment assembly and an electric hammer installation support arranged on the multi-dimensional adjustment assembly, and an electric hammer is assembled on the electric hammer installation support; the multi-dimensional adjusting assembly comprises an X-direction sliding module, a Y-direction sliding module, a lifting assembly and an inclination angle adjusting assembly. The X-direction sliding module and the Y-direction sliding module are used for controlling the electric hammer to reciprocate in the X direction and the Y direction correspondingly, the lifting assembly is used for controlling the electric hammer to ascend and descend in the height direction, and the dip angle adjusting assembly is used for changing the axial dip angle of the electric hammer. The multi-direction adjustable electric hammer has the beneficial effects that the electric hammer can be flexibly adjusted in multiple directions, automatic and high-precision punching is achieved based on visual perception, and the complex drilling requirement of the top of a tunnel is met.

The utility model relates to a percussion drill hammerhead of a punching cast-in-place pile. Comprising a hammer rod located in the center, a hanging mechanism is arranged at the top of the hammer rod, a plurality of hammer bodies spaced at equal angles in the circumferential direction are installed on the side portion of the hammer rod, a longitudinal through channel is formed between every two adjacent hammer bodies, a plurality of hammer teeth are installed on the outer side of the bottom of each hammer body, and detachable connecting strips are installed between the outer sides of the bottoms of the hammer bodies. The connecting strip is in a circular arc shape, a groove is formed in the outer side of the bottom of the hammer body, a threaded hole is formed in the bottom of the groove, the end of the connecting strip is located in the groove and provided with a sunk screw hole, and the end of the connecting strip is fixedly connected through an assembling screw located in the threaded hole and the sunk screw hole. According to the percussion drill hammerhead of the punching cast-in-place pile, probe stones on the hole wall can be completely removed through the impact effect provided by the connecting strips on the hole wall, the integrity and continuity when the hole wall is impacted are improved, the installation efficiency of a steel casing is improved, and the construction efficiency of the punching cast-in-place pile is guaranteed.

The utility model relates to a percussion drill hammerhead which comprises a hammer cap and a hammer core, the hammer cap is fixed on the upper plane of the hammer core, the diameters of circumferential walls between the hammer cap and the hammer core are equal, a lifting hole is formed in the hammer cap, and a lifting assembly used for lifting the percussion drill hammerhead is installed in the lifting hole. Octagonal prism wedge-shaped teeth and octagonal prism wedge-shaped side tooth blocks are fixed to the bottom plane of the hammer core in a partial penetration welding mode, the multiple octagonal prism wedge-shaped side tooth blocks are arranged in pairs and distributed on the circumferential wall of the hammer core at equal intervals, and the multiple octagonal prism wedge-shaped teeth are arranged in the center of the hammer core; according to the utility model, the wear resistance and durability of the impact teeth and the hammer head are improved, the frequency of maintaining and replacing the impact teeth and the hammer head is reduced, the work efficiency of impact hole forming is improved, consumables and other costs are reduced, and the economical efficiency is improved; and the maintenance and replacement frequency is reduced, and smoke and light pollution generated by welding are also reduced.

The invention relates to a dense array seismograph embedding switchable hole pattern hole forming device and a use method, the device comprises a main drill assembly, a cantilever cutter assembly, a feeding control assembly and a controller, the main drill assembly comprises a rotary power part, a transmission part, a drill rod and a main rack, the rotary power part is arranged in the main rack and is sequentially connected with the transmission part and the drill rod, and the cantilever cutter assembly is arranged on the main rack and is connected with the transmission part and the drill rod; the cantilever cutter assembly comprises a plurality of cantilevers, a cutter, a second connecting piece and an adjusting unit, each cantilever comprises a connecting part and a measuring part, the measuring part is provided with a guide sliding groove, the sliding block is in sliding connection with the guide sliding groove, the two ends of the second connecting piece are connected with the sliding block and the cutter respectively, and the locking mechanism is arranged on the sliding block to lock the position of the sliding block. The feeding control assembly comprises a feeding power piece, a shell and a support, the top end of the feeding power piece is connected with the shell, the bottom end of the feeding power piece is connected with the main rack, and the connecting part of the cantilever is connected with the main rack through a detachable first connecting piece. Therefore, according to the design, rapid switching between the round hole and the square hole can be achieved on the same device.

The invention relates to the technical field of rock drills, in particular to a high-speed rock drill head with an automatic ejection and presplitting function, which comprises a machine body, a machine base, a transmission rod, an impact rod and an exchange rotation driving mechanism, meanwhile, a plurality of extrusion seats capable of moving in the radial direction of the impact rod are arranged on the drill rod, and the center rod installed in the impact rod can drive the extrusion seats to knock rocks outwards in the forward rotation and reverse rotation process of the impact rod, so that the punching diameter is enlarged, the impact rod is conveniently and smoothly pulled out of a hole, and the punching efficiency is improved. The problem that an existing impact rod is difficult to fall off after punching is effectively solved.

The invention relates to the technical field of row-hole rock drilling, in particular to a drill jumbo row-hole rock drilling device based on laser positioning, which comprises a turntable, a laser transmitter mounted at the edge of the top end of the turntable, a sliding frame arranged at the top end of the turntable, a sliding arm slidably clamped at the inner end of the sliding frame, and a stabilizing component arranged at the front end of the sliding arm. The stabilizing assembly comprises a mounting block mounted at the front end of the sliding arm, first arc-shaped rods longitudinally penetrate through the two sides of the mounting block, a second arc-shaped rod is transversely arranged in the middle of the mounting block, pasting plates are fixedly connected to the two ends of the second arc-shaped rod, a plurality of inserting needles are fixedly connected to the outer walls of the pasting plates, and arc-shaped inner grooves are formed in the inner end of the mounting block in the longitudinal and transverse directions; the inner ends of the arc-shaped inner grooves are slidably connected with sliding blocks in a clamped mode, an abutting ball is arranged between the two sliding blocks, liquid storage cavities which are circularly arranged are formed in the inner ends of the flitch plates, and the liquid storage cavities circularly spread to the inner ends of the inserting needles, the inserting needles are inserted into the rock surface to achieve primary fixing, non-Newtonian media in the liquid storage cavities are hardened when being vibrated, vibration energy is absorbed, and the rigidity of the inserting needles is enhanced.

The invention provides a rock drill oil inlet amount automatic adjusting method which comprises the steps that an adjusting valve is controlled to feed oil into a rock drill impact system, and a working pressure value formed by working inlet oil in the adjusting valve is obtained; the buffer system is controlled to feed oil into the regulating valve, and the regulating valve obtains a buffer feedback pressure value of the buffer system; and the comparison result of the working pressure value and the buffer feedback pressure value is obtained, and the oil inlet amount of the impact system is controlled by the adjusting valve according to the comparison result. According to the method for automatically adjusting the oil inlet amount of the rock drill, the working oil inlet amount of the rock drill can be automatically adjusted according to the working conditions, so that the rock drill can timely and automatically adjust the working parameters of the rock drill according to the working conditions, the requirement for manual adjustment is reduced, and the labor cost is reduced.

The invention provides an automatic adjusting valve and a rock drill. The automatic adjusting valve comprises a valve element, a first cavity, a second cavity, an oil inlet and an oil outlet, and the valve element is provided with an adjusting channel inclined to the first direction; the first cavity is used for containing buffer oil flowing out of the rock drill so as to apply first acting force to the valve element. The second cavity is used for containing impact oil so as to apply second acting force to the valve element. The axis of the oil inlet is perpendicular to the first direction, and the oil inlet is used for guiding impact oil into the adjusting channel so as to apply third acting force parallel to the first direction to the valve element. The oil outlet is communicated with the oil outlet end of the adjusting channel and is used for guiding the impact oil in the adjusting channel into the rock drill; in the first direction, the distance between the oil outlet and the second cavity is smaller than that between the oil inlet and the second cavity; the second acting force and the third acting force are opposite to the first acting force in direction. The automatic adjusting valve can automatically adjust the impact energy of the rock drill according to the working condition of the rock drill, and the labor cost is reduced.

The invention relates to a device for generating vibrations for a construction machine, comprising a housing, a piston which is reversibly movable back and forth in a working chamber in the housing between a first reversal point and a second reversal point, a pressure fluid supply through which pressure fluid can be introduced and expelled into the working chamber in the region of the first reversal point and the second reversal point via at least one controllable control valve, wherein the piston can be set into a reversing motion to generate the vibrations, and a control unit which is designed to control the at least one control valve and through which the movement of the piston in the working chamber can be controlled and changed.According to the invention, the control unit is designed to control the piston in a first operating mode to generate vibrations and in a second operating mode to generate impact impulses, wherein a striking surface is formed on at least one end side of the working space, against which the piston strikes when reaching at least one reversal point to generate an impact impulse.

The utility model discloses a digital engineering investigation in-situ testing device, which relates to the technical field of geological drilling and comprises a drill tower and a hydraulic lifting device, a driving device is mounted on the hydraulic lifting device, and a striking device is connected onto the hydraulic lifting device through the driving device; the striking device comprises a guide rod, a hammering seat, a standard penetration hammer and a lifting block, and a hammer lifting device is arranged between the standard penetration hammer and the lifting block; according to the design, the stepped groove is formed in the guide rod to be matched with the hammer lifting device, it can be ensured that the standard penetrating hammer freely falls down to hammer the hammering base after rising to the designated position, the striking operation is completed, excessive manual operation is not needed, time and labor are saved, and safety and reliability are achieved; the problem that in traditional standard penetration operation, a standard penetration hammer needs to be lifted through winch lifting and manual rope hanging is solved.

The invention relates to the technical field of cable trench punching devices, and particularly discloses an expressway cable trench automatic punching robot which comprises a U-shaped movable support, an automatic punching device, an automatic punching device and an automatic punching device. The opening end of the U-shaped movable support covers the surface of a concrete guardrail of a cable trench; the first roller mechanisms are uniformly distributed on the inner wall of the opening end of the movable bracket; the movable support is arranged at the end, close to the cable trench, of the movable support, and the movable support vertically moves along the end wall of the movable support; the electric hammer assembly is installed at the bottom end of the movable support, and the drilling end of the electric hammer assembly faces the movable support; the bottom end of the electric hammer height adjusting assembly is connected with the movable support, and the top end is in threaded connection with the movable support; the second roller mechanisms are evenly distributed on the face, close to the movable support, of the movable support, the problem that in the prior art, time and labor are wasted when a cable trench is punched manually is solved, and the purposes that the cable trench punching efficiency is improved, and the construction environment of constructors is improved are achieved.

The utility model belongs to the technical field of mine punching machines, and discloses a mine punching machine which comprises a pushing frame, the pushing frame comprises a structural cavity, an impact punching assembly is arranged on one side of the structural cavity, a movement assembly for driving the impact punching assembly to operate is arranged in the structural cavity, and two sets of grips are arranged on the side, away from the impact punching assembly, of the structural cavity. Two sets of wheels and two sets of supporting legs are arranged at the bottom of the structural cavity, the impact punching assembly comprises a drill rod and a drill bit, the movement assembly comprises a motor and an eccentric block, the side wall of the eccentric block abuts against the end, away from the drill bit, of the drill rod, and a reset assembly is further arranged on the outer side of the eccentric block and comprises a reset disc, a return plate and a high-elasticity rib bundle. The mountain punching device is compact and reasonable in structural design, capable of driving the drill bit to reciprocate to impact and punch a mountain, convenient to use and move, suitable for complex ground environments such as mines and the like, small in vibration and capable of greatly improving the use comfort of an operator.

The invention discloses a hydraulic control system and method for free switching of high impact and low impact of a drill jumbo and relates to the field of engineering machine.The hydraulic control system comprises a pump assembly, an oil outlet valve set, a main reversing valve and a pressure limiting valve set. When the main reversing valve is located at the first station, the pressure limiting valve set sets the standby pressure of the hydraulic control system to the overflow pressure value of the third overflow valve, the pump assembly maintains the minimum flow output, when the main reversing valve is located at the second station, the highest impact pressure is limited to the overflow pressure value of the first overflow valve, and the pump assembly is suitable for tapping and soft rock working conditions, and when the main reversing valve is located at the third station, the highest impact pressure is limited to the overflow pressure value of the second overflow valve. The impact pressure is limited to the overflow pressure value of the second overflow valve, the impact power of the drill jumbo is prevented from exceeding the limit, the drill jumbo is suitable for hard rock and deep hole working conditions, through cooperation of the control oil ports and the pressure limiting valve set, different highest system pressures are limited under different working conditions, segmented control over the high impact pressure and the low impact pressure can be achieved, and the working efficiency is improved.

The present application relates to the technical field of engineering machinery, and specifically relates to a kind of based on drilling rig actuator, comprising: drive device, the drive device has track to drive, and the control unit of drilling rig is provided on the drive device;Operation execution component, including the first rotary drive piece installed in the outside of adjusting seat, the output end of the first rotary drive piece is fixedly connected with convex shell, the present application is by being provided with operation execution component, three rotary drive pieces in operation execution component, two drill bits can be respectively adjusted, two drill bits position is separately adjusted and two drill bits position is switched, meet different needs in the process of drilling, not only compact overall structure, will not affect the original operation of drilling rig, and two drill bits are very smooth when switching, will not influence each other when working, ensure the coherence of drilling and various operations, greatly improve drilling efficiency.

The application discloses a square pile foundation impact drilling construction device and method in a high groundwater level area, and relates to the technical field of pile foundation construction. The drilling construction device comprises a drilling mechanism and a winch lifting mechanism. The winch lifting mechanism is used for driving the drilling mechanism to impact drill a pile foundation pit through a rope. The rope is arranged in pairs. A detection mechanism is arranged above the drilling mechanism. The detection mechanism comprises an upper baffle, a lower baffle, a follower and a pressure detection piece. A restraint groove is formed in each of the upper baffle and the lower baffle. The paired ropes pass through the upper baffle and the lower baffle through the corresponding restraint grooves. The follower is clamped on the ropes. The follower is arranged between the upper baffle and the lower baffle. The pressure detection piece is arranged above the follower. When the drilling mechanism is lowered by the ropes, the follower abuts against the lower baffle. When the drilling mechanism is lifted by the ropes, the follower moves upwards to abut against the upper baffle by the pressure detection piece. The drilling construction device realizes timely discovery of the deformation of the ropes.

The invention belongs to the technical field of hydraulic breaking hammers, and provides a high-flow reversing valve for a hydraulic breaking hammer and the hydraulic breaking hammer, according to the high-flow reversing valve for the hydraulic breaking hammer and the hydraulic breaking hammer, the total sectional area of an oil flowing path is enlarged through the arrangement of a first variable-pressure cavity and a second variable-pressure cavity; the flow bottleneck caused by the fact that the diameters of a switching valve sleeve and a switching valve element of an existing reversing valve are reduced is effectively broken through, and the flow of the reversing valve is greatly improved under the condition that the diameters of the switching valve element and the switching valve sleeve are not increased. The variable-pressure oil channel is directly communicated with the upper cavity of the middle cylinder body, high-pressure oil is injected quickly, low-pressure oil is discharged in time, the problems that descending power supply of an impact piston is not in time and the motion resistance is large are solved, the descending speed of the piston is remarkably increased, and then the instantaneous impact force of the hydraulic breaking hammer is effectively enhanced.