26results about "Drilling accessories" patented technology

A dust-free dust removal system of a mine drilling machine relates to the technical field of air purification and comprises a dry dust removal part and a wet dust removal part. The system integrates the advantages of a dry type dust removal technology and a wet type dust removal technology, the water flow is adjusted through air pressure, air pressure and hydraulic oil pressure, dust removal is more accurate, full-particle-size dust is covered, the system adapts to various working conditions, maximum health guarantee is achieved for staff, the service life of a drilling tool and a filter element can be greatly prolonged, and oil consumption is reduced.

Grounding systems, grounding components, and methods of manufacturing, assembling, and using the same to provide dynamic and adaptable electrical grounding. In one aspect, an adaptable grounding system is provided. The grounding system may include a plurality of grounding components positioned to adaptively engage with an electrical-grounding surface, e.g., facilitating improved electrical contact. The grounding components may be mounted on a first structure which is opposite to a second structure that includes an electrical-grounding surface. The first structure and / or the second structure may be adjustable, e.g., between at least a first configuration, e.g., a non-grounded configuration, and a second configuration, e.g., a grounded configuration. The grounding systems, components, and related methods described herein may be used with different manufacturing systems and processes including those that are electrically-driven.

The application discloses a dust collector intelligent control system and method and a down-the-hole drill, wherein the electric control system comprises a dust raising sensor, a motor rotating speed sensor, a power device rotating speed sensor and a controller; the dust raising sensor, the motor rotating speed sensor and the power device rotating speed sensor are electrically connected to the controller respectively; the hydraulic control system comprises a power device, a hydraulic oil tank, a hydraulic pump, a dust collector motor control valve and a dust collector; the hydraulic oil tank is connected to the hydraulic pump, the dust collector motor control valve and the dust collector through hydraulic pipelines respectively; the dust collector motor control valve is connected to the hydraulic pump and the dust collector through hydraulic pipelines respectively. The dust collector intelligent control system can realize the accurate control of the matching between the motor rotating speed and the dust removal effect when the dust collector is working, thereby effectively improving the construction site environment; the dust collector motor brake valve is arranged, the motor can be rapidly braked, and the dust removal efficiency of the filter element of the dust collector can be effectively improved.

The invention relates to the technical field of bearings, in particular to a dustproof sealing bearing for a rocker arm of a coal mining machine, which comprises an inner ring, an outer ring and dustproof components respectively arranged on the end faces of the two sides of the inner ring and the outer ring. The dustproof assembly comprises a sealing assembly and a baffle which are sequentially arranged from inside to outside in the axial direction. The side, away from the baffle, of the sealing assembly abuts against the inner ring and the outer ring so as to prevent external dust from entering the raceway space between the inner ring and the outer ring. The inner surface of the baffle is provided with a partition plate which is connected with the sealing assembly and is of a vortex-shaped structure. The sealing assembly and the baffle are fixed to the outer ring and the inner ring correspondingly and can synchronously rotate along with relative rotation between the inner ring and the outer ring. When the rotating direction of the baffle is opposite to that of the partition plate, the partition plate can push dust on the surface of the sealing assembly to move towards the outer ring. The dustproof sealing bearing is good in dustproof sealing performance, simple in overall structure and low in manufacturing cost, and the problems that dust enters the bearing to affect the service life of the bearing and frequent maintenance is needed are effectively solved.

A power tool includes a tool body, a grip, a trigger, a locking switch, and a locking retainer. The locking retainer is configured to apply a locking force to the locking switch to keep the locking switch in the locking state. During a process in which the locking switch is operated to switch from the locking state to the unlocking state, the locking force changes from large to small.

Methods of grounding a perforating gun assembly. The methods include providing a perforating gun assembly having a gun barrel housing, an explosive charge holder, and a detonator. A tandem sub having a steel body with an internal bore and a tapered shoulder is threadedly connected to the gun barrel housing. A bearing member is positioned along the tapered shoulder of the tandem sub and includes a tubular support body, a plurality of roller bearings, and a cage. An electrically conductive ground member is placed within or abutting the bearing member, establishing electrical communication between the bearing member and the steel body of the tandem sub. The bearing member may also be grounded to the gun barrel housing of the perforating gun assembly. The methods further include running the assembly into a wellbore, and then detonating the explosive charges held within the charge holder.

A seal element for an annular control device includes an elastomer seal sleeve having an annular opening therein and arranged to be radially compressed to contact an exterior of a pipe disposed within the elastomer seal element. The elastomer seal sleeve comprises at least one of a wear resistant material disposed on an interior surface of the annular opening and a lubricant channel on the interior surface.

The invention relates to the technical field of roadway drilling safety, and discloses a soft coal seam underground drilling dust-falling blowout preventer which comprises a drill rod and an auxiliary assembly used in cooperation with the drill rod, the auxiliary assembly comprises a fixing flange, and the fixing flange is fixedly installed on a roadway wall near a drill hole; an adjusting assembly is fixedly installed on the fixed flange and comprises a fixed plate and a movable plate, the fixed plate is fixedly installed on the side, away from the sliding bin, of the fixed flange, a sealing bag is fixedly installed between the fixed plate and the movable plate, a plurality of fixing holes are formed in the fixed plate, and the movable plate is fixedly installed on the fixed plate. And a plurality of insertion rods are fixedly mounted on the movable plate. The movable plate is matched with the sealing bag. When shrinkage or collapse occurs in the drilled hole, the movable plate is matched with the sealing bag, so that the sealing bag moves and is arranged on the outer side of the movable plate in a sleeving mode, and the effects of improving the sealing performance and reducing gas and coal leakage are achieved.

Provided are bearing assemblies including one or more substrate assemblies, such as thrust bearing assemblies. The substrate assemblies include a bearing element fixed to a substrate. The bearing elements are formed from a thermally stable material such as a ceramic-bonded diamond composite. Methods for manufacturing the bearing assemblies are also provided.

The application discloses a rock-soil dustproof air pressure drilling equipment and a dust removal method. The equipment comprises a drill bit, a dust removal spray pipe and a liquid storage tank. The drill bit is provided with a drill rod. The dust removal spray pipe is located on one side of the drill rod and parallel to the drill rod, and moves synchronously with the drill rod to the drilling direction. The length of the dust removal spray pipe in the axial direction is less than the length of the drill rod, so that the free end of the dust removal spray pipe sprays liquid dust removal outside the drilling hole or sprays liquid into the drilling hole along with the drill rod, and the liquid is bonded with dust to form wet rock-soil particles and is discharged in the form of mud. The liquid storage tank is connected with the dust removal spray pipe through a pipeline to transport liquid to the dust removal spray pipe and spray the liquid out through the free end of the dust removal spray pipe. The dust removal spray pipe is arranged on one side of the drill rod and moves synchronously with the drill rod, so that the dust removal spray pipe is integrated with the drill bit, the volume is reduced, and the movement is facilitated.

The present disclosure provides a switching device, which includes an electricity leading member, a power transmission member, and a conductive connecting member. The first end of the electricity leading member is configured to be electrically connected with the power supply terminal, and the second end of the electricity leading member is provided with a first contact portion; the power transmission member is provided with a second contact portion, and the second contact portion is configured to contact and be electrically connected with the first contact portion; one end of the conductive connecting member is connected with the electricity leading member, the other end is connected with the power transmission member, the electricity leading member is electrically connected with the power transmission member through the conductive connecting member.

An apparatus (10) for dust removal from a drilled hole (12), including an adaptor (14) for coupling a vacuum to the drilled hole (12), and a pump (16) for pumping gas into the drilled hole (12) to blow dust from the drilled hole (12), wherein the adaptor includes a directing means (18) for directing an outlet (20) of the pump into the drilled hole (12).

According to the present invention, it is possible to provide an extrusion tap (10) having a screw part (14) that includes a complete thread part (24) and an introduction part (22) that is provided continuously with the complete thread part (24) and that has a diameter that decreases toward the tip, and that has a plurality of bead parts (18) provided in the circumferential direction, the bead parts (18) each including a pressing part (18a), a thread top part (18b), and a relief part (18c), in each of the bead portions (18), a tooth shape (28a) in a cross section including the axis (C) direction of the extrusion tap (10) at the pressing portion (18a) varies in the circumferential direction, and therefore, the contact state of the bead portions (18) and a workpiece is improved, cooling performance is improved, and as a result, durability is high.

Provided are bearing assemblies including one or more substrate assemblies, such as thrust bearing assemblies. The substrate assemblies include a bearing element fixed to a substrate. The bearing elements are formed from a thermally stable material such as a ceramic-bonded diamond composite. Methods for manufacturing the bearing assemblies are also provided.

The invention relates to the field of foundation pit construction, in particular to a tunneling dust suppression device which comprises a dust suppression mechanism. Comprising an inner base frame, a mounting plate, a connecting plate, an outer base frame and a dust suppression part, wherein the inner base frame is arranged outside a fixed outer sleeve of a tunneling drill bit in a sleeving manner; the mounting plate is fixed at the top of the inner base frame; the connecting plate is fixed on the outer side of the mounting plate; the dust suppression part comprises a hanging ring fixed to the bottom of the connecting plate, an annular water pipe is arranged on the inner side of the hanging ring, the bottom of the water pipe communicates with a connecting hose, and a center nozzle is formed in the center of the bottom of the spray head. According to the invention, through a transmission system formed by the driving piece and the wavy guide groove, the plurality of nozzles which are annularly arranged generate synchronous pitching swing to form a dynamic scanning three-dimensional water mist network, so that the dust suppression coverage range is obviously expanded, and dust removal dead angles existing in a traditional fixed nozzle are effectively eliminated.

A method and device for forecasting at least one machine physical parameter measured by a sensorized rolling element in a bearing of an operating machine, the method including determining at least a set of machine operating conditions representative of the operation conditions of the machine while the machine is operating and implementing a conditional imputation model configured to forecast the machine physical parameter from the machine operating conditions. Also a method for training a conditional imputation model configured to forecast a machine physical parameter from a set of machine operating conditions.

A bearing may include a body defining a bore having an inner surface, the inner surface including a bearing surface. A bearing may include a plurality of recesses inset in the inner surface, wherein the plurality of recesses are asymmetrical, the plurality of recesses configured to generate a non-rotating net radial force on the journal.

A power tool includes a tool body, a grip, a trigger, a locking switch, and a locking retainer. The locking retainer is configured to apply a locking force to the locking switch to keep the locking switch in the locking state. During a process in which the locking switch is operated to switch from the locking state to the unlocking state, the locking force changes from large to small.

A cutting ring assembly for a tunnel boring machine includes a fixed axle, an inner ring rotationally fixed to the axle and having an inner raceway on a radially outer surface, a cutting ring having a radially inner surface forming an outer raceway, and a plurality of rolling elements between the inner raceway and the outer raceway supporting the cutting ring on the inner ring for rotation relative to the axle.

The invention relates to the technical field of oil pumping units, and discloses an oil pumping unit beam bearing seat assembly with a polytetrafluoroethylene sliding bearing and an oil pumping unit. The beam bearing seat assembly of the oil pumping unit comprises a seat body which is connected with a walking beam; the bearing is arranged in the seat body and is made of polytetrafluoroethylene; the cover plate piece is arranged on one axial side of the seat body; the fasteners are arranged in the circumferential direction of the cover plate piece and connected with the base body and the cover plate piece. The fastener has a first state and a second state; the fastener is transitionable between a first state and a second state. The pumping unit comprises a crank, a main shaft, a walking beam, a power end and a pumping unit beam bearing seat assembly, the pumping unit beam bearing seat assembly is arranged at the tail of the walking beam, one end of the crank is connected with the power end, and the other end of the crank is connected with the pumping unit beam bearing seat assembly through the main shaft. According to the technical scheme, the technical problem of bolt breakage caused by uneven stress of a bearing seat in the prior art is solved.

An intelligent automatic coal powder receiving device based on prevention and control of rock burst in coal mines includes a driving vehicle. Wheels with a moving function and a central processor are set on the driving vehicle, supporting mechanisms are set symmetrically on both sides of the driving vehicle, a coal powder storage box and a cross double frame positioning mechanism are set at the top of the driving vehicle, a coal powder receiving pipe is set on the cross double frame positioning mechanism, a binocular camera is set at the coal powder receiving pipe, and one end of the coal powder receiving pipe is a coal powder inlet, the other end of the coal powder receiving pipe is connected to the coal powder storage box through a connecting pipe, and the cross double frame positioning mechanism is connected to the driving vehicle through a telescopic mechanism.

The present application relates to pumping unit technical field, disclose the pumping unit beam bearing seat assembly with polytetrafluoroethylene sliding bearing and pumping unit. Pumping unit beam bearing seat assembly includes seat body and walking beam connection;Bearing is arranged in the seat body, the bearing is made of polytetrafluoroethylene;Cover plate is arranged on one side of the seat body axial;A plurality of fasteners are arranged along the circumference of the cover plate and are connected to the seat body and the cover plate;Fastener has first state and second state;Fastener can be converted between the first state and the second state. Pumping unit includes crank, main shaft, walking beam, power end and pumping unit beam bearing seat assembly, pumping unit beam bearing seat assembly is arranged at the tail of walking beam, one end of the crank is connected with the power end, the other end is connected with pumping unit beam bearing seat assembly through the main shaft. The present application solves the technical problem of uneven stress of bearing seat in related art, which leads to bolt fracture.

The application relates to a novel orifice dewatering and dust removing device and a use method thereof, which comprises a primary dust removing assembly, a filtering assembly, a secondary dust removing assembly and a dewatering assembly; the primary dust removing assembly is internally provided with the filtering assembly, the top end of the primary dust removing assembly is connected with the secondary dust removing assembly, one end of the secondary dust removing assembly is connected with the dewatering assembly, the primary dust removing assembly comprises a box body one, an import pipe and a purification cavity one, and the inner side of the box body one is provided with the purification cavity one. The filtering assembly and the secondary dust removing assembly can filter dust for multiple times, the effect is better, the filtering assembly can automatically complete the discharge of collected dust, complete the replacement of the purification cavity and the filter screen, avoid the problem that wet dust contacts the filter hole and is blocked, the dust outside the filter screen is shaken off through the vibration piece, then falls into the discharge cylinder through the material throwing hole and is discharged, so that the dust outside the filter screen is efficiently removed, and the dust can regain the high-efficiency filtering capacity.

The invention relates to the technical field of down-the-hole drills, in particular to a telescopic splash guard and spraying integrated device for a down-the-hole drill, which comprises a cylinder body, an air inlet seat and a drill bit, and further comprises a bidirectional telescopic rod which is fixedly connected to the top of a fixing plate, and the outer side of the air inlet seat is fixedly connected with a fixing plate above the drill bit; the left side and the right side of the bidirectional telescopic rod are connected with arc-shaped protective covers, a telescopic connecting plate is connected between the two arc-shaped protective covers, and the atomizing nozzles are arranged on the outer sides of the arc-shaped protective covers. The arc-shaped protective cover is driven by the bidirectional telescopic rod to move, the protective range is expanded in cooperation with the telescopic connecting plate, broken stone splash prevention in the drilling process is achieved, and the spraying system can switch modes according to working conditions: in dry weather, water flow forms water mist through an atomization nozzle, and construction dust raising is effectively restrained; in cloudy and rainy days, the high-pressure nozzles spray water columns to impact the flow dividing disc, so that water flow diffuses and washes the inner wall of the arc-shaped protective cover, and sludge adhesion is reduced.