77results about How to "Improve hole reaming efficiency" patented technology

The invention relates to a method for extracting coal bed methane through down-hole bedding long borehole consecutive cave building and a hydraulic mechanical drill with the diameter changed and enlarged while drilling. A coal bed bedding long borehole is combined with a cave building technology, and the permeability of low-permeable coal reservoirs and the coal bed borehole extraction capacity are improved. A hole is opened at 1/3 coal thickness or 1.5m upwards away from the coal heading floor on the extracting drill site coal wall of an underground coal mine along with the coal bed, the hydraulic mechanical drill with the diameter changed and enlarged while drilling performs cave building on the borehole from inside to outside successively after the borehole reaches the preset depth, and the cave diameters and distances can be calculated through formulas. Coal bed stresses around the cave are released and coal bed prior cracks are widened and lengthened after the caves are completed, tensional and shear failures occur to the coal bed, novel cracks are produced, and accordingly, the coal bed crack connectivity is increased, the permeability is improved, the coal bed methane can be depressurized and desorbed rapidly, the coal bed methane extracting efficiency is improved dramatically, and the coal bed methane extracting time is shortened.

The present invention discloses construction process and special appliances for forming filling pile with reamed end. The construction process includes the following steps: boring to set depth with conventional pile work borer; reaming with reaming bit to form cylinder or frustum in the pile bottom; setting the reinforcing cage gravitationally or by means of external force; and pouring concrete to form the filling pile. The special appliances include one reaming bit capable of forming oversized pouring end, and one reinforcing cage capable of being drawn in and drawn off. The filling pile with reamed end has great stressed area in the pile bottom, great bearing capacity and high anti-seismic capacity.

The invention discloses a transverse-broaching device. The transverse-broaching device is provided with a rotating shaft, and is characterized in that the transverse-broaching device further comprises a rotating table, an earth cutting arm and a telescopic arm, the rotating table is driven by the rotating shaft to rotate, the outer contour of the earth cutting arm is an arc, the fixed end of the earth cutting arm is hinged and fixed to the rotating table through a hinge shaft, the other end of the earth cutting arm is hinged to the telescopic end of the telescopic arm through a hinge shaft, and the fixed end of the telescopic arm is fixedly connected with the rotating table. The transverse-broaching device has the advantages that the transverse-broaching device is simple in structure and capable of carrying out transverse broaching on any position of a pile body, the earth cutting arm can be driven by the telescopic arm to unfold outwards at any time so as to adjust and enlarge radii as required, and the earth cutting arm is stable in stressed structure, not prone to damage and high in broaching efficiency.

The invention discloses a hole reaming method for hole reaming equipment on a construction site. A connecting rod is gradually lowered under the action of a power mechanism, the connecting arm rotates around the pin shaft 2 and the pin shaft 1, and the scraping mechanism rotates around the connecting pin, so that The connecting arm is horizontal, and the reaming equipment rotates around its axis, so that the scraping teeth scrape the wall of the original pile hole. After the scraping mechanism is expanded to the maximum state, the hole formed by scraping is formed; the connecting rod is gradually raised by the action of the power mechanism. The connecting arm rotates around pin 2 and pin 1, and the scraping mechanism rotates around the connecting pin, so that the connecting arm tilts from the horizontal state, and the scraping mechanism shrinks to the minimum state; the reaming equipment is pulled out along the original pile hole to the hole outside. The diameter of the hole expanded by this reaming method is high in longitudinal depth, and the diameter reduction range at the bottom of the hole and the original diameter of the pile hole is reduced, so that the bearing force after grouting is increased, the stability of the upper building can be maintained, and the reaming efficiency is high. And it can protect the security of the equipment.

The invention discloses a ground drilling sectional type grouting device. The ground drilling sectional type grouting device comprises a slurry tank, a grouting main pipe, a reaming assembly, a liquidinjection pipe, a low-pressure grouting pipe, an upper supporting and blocking assembly and a lower supporting and blocking assembly, wherein the slurry tank supplies slurry to the grouting main pipeand the low-pressure grouting pipe, the grouting main pipe is rotationally arranged in a centralizing sleeve, and the upper supporting and blocking assembly and the lower supporting and blocking assembly are arranged on the outer circumference of the centralizing sleeve; the reaming assembly is further arranged on the grouting main pipe, and the reaming assembly can be driven to rotate for reaming by driving the grouting main pipe to rotate; after reaming, liquid is injected into the upper supporting and blocking assembly and the lower supporting and blocking assembly through the liquid injection pipe so that the upper supporting and blocking assembly and the lower supporting and blocking assembly can expand and be correspondingly embedded into reamed holes, and the low-pressure groutingpipe can inject slurry into the space between the upper supporting and blocking assembly and the lower supporting and blocking assembly so as to form a sealed hole; and then the grouting main pipe injects slurry into the bottom of the sealed hole, and sectional type grouting is achieved.

The invention discloses a multifunctional reamer for geological prospecting. The reamer comprises a drill pipe, a drill bit, three spiral reamer plates and a fixing band; an impactor is fixed on the upper portion of the drill pipe, the fixing band is fixed on the lower portion, close to the drill bit, of the drill pipe, three rotating shafts are uniformly fixed on the edge of the fixing band, each spiral reamer plate is rotatably connected with the fixing band through the corresponding rotating shaft, the portions, close to the fixing band, of the upper portion and the lower portion of the internal surface of each spiral reamer plate are connected with the drill pipe through telescopic cross rods, a compression spring is installed in each telescopic cross rod, protruding blocks are uniformly welded to the outer surface of each spiral reamer plate, and a dust cover is rotatably connected to the portion, above the impactor, of the drill pipe through a thread. According to the multifunctional reamer for geological prospecting, the structure is simple, the reaming effect is rapid and significant, time and labor are saved, the functions of achieving reaming and discharging mud and gravel to prevent blocking and dust are achieved simultaneously, and the multifunctional reamer is worthy of popularization.

The invention discloses a pneumatic impact reamer and a reaming construction process. The pneumatic impact reamer comprises an upper joint, an upper end cover, a central spindle, an outer cylinder, apunch hammer and a drill. The upper joint belongs to a switching buckle type upper joint. The upper joint is connected with the central spindle. The upper end cover is in threaded connection with thecentral spindle and the outer cylinder. A supporting sleeve and a bushing are sleeved with the outer cylinder in sequence. The punch hammer is sleeved with the bushing, the outer cylinder and a spacersleeve. The drill is fixedly mounted in the outer cylinder through a spline sleeve. A centralizing joint is arranged at the end, far away from the upper joint, of the drill. The centralizing joint isprovided with a plurality of air guide holes and liquid guide holes. According to the pneumatic impact reamer and the reaming construction process provided by the invention, compared with a bundled impact reamer, the pneumatic impact reamer is simpler in structure, free of welded components, integrally more resistant to impact and more reliable in operation; the pneumatic impact reamer is much larger than the bundled impact reamer through the effective impacting mass of the punch hammer, can reach higher impacting energy and has much higher rock breaking efficiency.

The invention discloses a two-stage dynamic hole expanding drilling tool, and relates to the technical field of horizontal directional drilling. The two-stage dynamic hole expanding drilling tool includes a screw motor assembly, a submersible motor assembly, a reducer, a primary cutterhead assembly and a secondary cutterhead assembly, the screw motor assembly includes a screw motor shell, a screwmotor and a transmission shaft, and the reducer includes a reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set. The primary cutterhead assembly and the secondary cutterhead assembly are adopted, the primary cutterhead assembly and the secondary cutterhead assembly are powered by the screw motor assembly and the submersible motor assembly correspondingly, the hole expanding efficiency of the drilling tool is improved by two power sources, the single-pass hole expanding diameter of the double cutterhead plate assemblies is increased, theconstruction time is shortened, and the construction cost is saved. Hereby the technical problems that the single-pass hole expanding diameter is small due to the limitation of drilling torque in theprocess of water directional drilling in the prior art and many times of hole expanding need to be conducted to reach the expected borehole diameter are solved.

The invention discloses a pipe expander, which includes a clamp, a bow frame, a top pressure screw, a pipe expansion cone and a handle. The bow frame is installed on both sides of the fixture, and a top pressure screw is installed on the bow frame. Cone head, the upper end of the top pressure screw protrudes from the bow frame to connect with the handle, a row of middle holes for clamping the metal pipe is set in the middle of the fixture, and a fine-tuning mechanism is set at the connection between the bow frame and the fixture for fine-tuning the top of the bow frame The concentricity of the pressure screw and the middle hole. The pipe expander of the present invention uses the top pressure screw to press and expand the cone to expand the metal pipe clamped in the center hole. In order to adjust the position of the pipe expander, the concentricity between the top pressure screw and the middle hole is ensured. Set the fine-tuning mechanism at the connection between the bow frame and the fixture. Before processing, first press the expander cone to the upper edge of the metal pipe to correct the concentricity of the top pressure screw and the middle hole. When there is a deviation, adjust the fine-tuning mechanism until The top pressure screw is concentric with the middle hole.

The invention discloses a centralizing and cutting integrated two-stage cone reamer, and relates to the technical field of horizontal directional drilling construction rock reaming. The centralizing and cutting integrated two-stage cone reamer comprises a reamer body; a mandrel is arranged at the axis of the reamer body; a first-stage centralizing cone set and a second-stage cutting cone set are arranged on the reamer body; the first-stage centralizing cone set is used for centralizing; the second-stage cutting cone set is used for cutting; and each of the first-stage centralizing cone set and the second-stage cutting cone set consists of a plurality of cones. Through the arrangement of the first-stage centralizing cone set and the second-stage cutting cone set, reaming cutting can be achieved, the reamer can be centralized, effective combination of the reamer and a centralizer is achieved, the weight of a reaming drilling tool is reduced, the drilling torque is reduced, and the footage drilling efficiency is improved; and according to the design, the centralizing cones has a cutting capacity and can smoothly enter guiding holes in a stratum with both a soft part and a hard part, and the design has the advantages of light weight, compact structure and high reaming efficiency.

A hole reaming and borehole enlarging device for exploitation of a coalbed methane exploitation hole bottom comprises a connecting drill pipe, wherein a hole reaming drill bit is arranged at the lower end of the connecting drill pipe; an inner cavity of the connecting drill pipe serves as a flushing fluid flowing duct; a flushing fluid counterbalance valve is mounted in the flushing fluid flowing duct; a borehole enlarging oil cylinder is arranged in the flushing fluid flowing duct; the hole reaming drill bit comprises a cutting head and a guiding sleeve which is fixedly connected with the connecting drill pipe; a guiding rod which moves in the up-down direction is mounted in the guiding sleeve; and a plurality of cutting wings for hole reaming operation are uniformly distributed between the guiding sleeve outside the guiding rod and the cutting head in the peripheral direction. The hole reaming and borehole enlarging device is simple and reliable in structure, good in stability and high in safety, completely meets construction requirements of coalbed methane borehole enlarging wells, and has an excellent market prospect.

The invention relates to a cutting type reamer which comprises a waist band and a drill rod. The drill rod is supported by cross rods to be fixedly connected to the center of the waist band, a plurality of reaming rods are fixedly connected between the inner wall of the waist band and the outer wall of the drill rod, a plurality of alloy blocks are evenly distributed on the lower end face of the waist band and the outer walls of the reaming rods, the reaming rods are symmetrically arranged relative to the center of the drill rod, the drill rod and the reaming rods are of a hollow structure and are communicated, the cross rods are of an upper-layer and lower-layer structure, the cross rods of the upper layer and the lower layer are arranged in a staggered mode, the cross rods of each layer are symmetrically arranged relative to the central axis of the drill rod, and a plurality of alloy blocks are fixedly connected with the lower side walls of the cross rods. The cross rods are of a hollow structure, and are communicated with a central through hole of the drill rod. The cross rods of the dual-layer structure are additionally arranged, the alloy blocks are arranged and combined with the reaming rods, secondary stirring and smashing on soil and broken stone are achieved, large soil and broken stone are avoided, and compared with original single-support cross rods, reaming efficiency is greatly improved.

The invention relates to a waistband reaming type reamer, which comprises an annular waistband, wherein the center of the waistband is fixedly connected to a drill rod through a cross rod, a plurality of reaming rods are fixedly connected between the inner wall of the waistband and the sidewall of the drill rod, the reaming rod is centrally symmetrical along the drill rod, the drill rod, the reaming rods and the cross rod are of hollow structures, a plurality of welding grooves are symmetrically formed in the inner wall of the waistband, the upper end of each reaming rod is welded in the corresponding welding groove, and the section of each reaming rod is of a square structure; a plurality of reaming strips are arranged on the outer wall of the waistband, an alloy block group is arranged between the adjacent reaming strips, and each alloy block group comprises a plurality of alloy blocks arranged along the reaming strips; the alloy blocks are uniformly arranged on the outer walls of the cross rod and the reaming rods.

The invention discloses a nursery stock planting device and method capable of expanding holes directionally for landscape gardens. The nursery stock planting device comprises a device plate and a driving bevel gear, wherein a driving motor is mounted above the device plate, the output end of the driving motor is connected with a guide screw rod, and a soil penetrating nail is fixed to the lower end of the guide screw rod; and the driving bevel gear is arranged outside the guide screw rod in a sleeving mode, a drilling head is fixed to the lower portion of the driving bevel gear, and a plurality of drilling teeth are evenly arranged on the surface of the drilling head. According to the nursery stock planting device and method capable of expanding holes directionally for landscape gardens, an arranged driven bevel gear can rotate in the vertical direction under the meshing action of the driving bevel gear, a side wing hole expanding head is arranged on the surface of the driven bevel gear and can be in contact with soil, meanwhile, rotating crushing teeth can quickly crush stones and the like contained in the soil, so that the hole expanding efficiency of the driven bevel gear is improved, and the phenomenon that the stones are large and are difficult to dig out is avoided.

The invention relates to complete equipment for transverse large-diameter hole forming in a soft coal seam coal pillar area and a hole forming technology. The complete equipment comprises a high-torque drilling machine, a holing drilling tool and a reaming drilling tool, wherein the high-torque drilling machine comprises a guide rail assembly, a stable drilling support assembly and a drilling androtating device; the stable drilling support assembly is installed on a large rotation plate of the high-torque drilling machine to provide support for a drilling machine in the drilling process; thedrilling and rotating device is installed on the guide rail assembly, and drives the holing drilling tool to rotate according to the drilling process to achieve high-speed drilling or driving the reaming drilling tool to rotate to achieve low-speed high-torque back reaming; the guide rail assembly is installed on the stable drilling support assembly, can adjust the drilling position and directionof the drilling and rotating device and provide required pulling force for back reaming of the drilling and rotating device. The hole forming technology comprises a holing process and a back reaming process. The problems of difficult operation, low efficiency, low hole forming rate, high labor intensity and the like in transverse large-diameter hole forming in the soft coal seam coal pillar can beeffectively solved.

The invention relates to a super-automatic pipe reaming production line, and relates to the field of reaming machines. The super-automatic pipe reaming production line comprises a feeding assembly, a reaming assembly, a rotating assembly and a receiving device. The feeding assembly is located on one side of the reaming assembly, the receiving device is located on the other side of the reaming assembly, and the rotating assembly is located between the feeding assembly and the receiving device and is connected with the feeding assembly. The rotating assembly comprises a rotating plate, a rotating rod and a rotating motor, and the rotating plate is located between the feeding assembly and a material collecting box and connected with the feeding assembly. The rotating rod penetrates through one corner of the rotating plate and is fixedly connected with the rotating plate, and a driving shaft of the rotating motor is fixedly connected with the rotating rod. The receiving device is located on the side, away from the reaming assembly, of the rotating plate and connected with the rotating motor. The super-automatic pipe reaming production line has the advantages that full-automatic receiving and boxing of pipelines are achieved in the whole receiving process, workers do not need to count the number or box pipelines, and time and labor are saved.