46results 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.

An apparatus is provided that includes a diamond bearing surface positioned in sliding engagement with an opposing bearing surface of a diamond reactive material. The opposing bearing surface is hardened via a material treatment.

The present invention provides a switch assembly, a switch assembly starting method, and an electric tool. The switch assembly includes a housing, a main switch accommodated in the housing, and a locking switch and a trigger switch installed on the housing. One end of the trigger switch is exposed outside the housing, and the other end is accommodated in the housing and contacts the main switch. One end of the locking switch is exposed outside the housing, and the other end contacts the trigger switch. The locking switch has a locking position and a release position. When the locking switch is in the locking position, the locking switch restricts the action of the trigger switch, the trigger switch is in a locked state, and the main switch cannot be started; when the locking switch is in the release position, the locking switch is located next to the trigger switch and the restriction is released, the trigger switch is in a released state, and the main switch can be started. Compared with the prior art, the switch assembly of the present invention is always in a locked state when not in use, and will not cause abnormal start-up due to unintentional pressing, and has a high safety factor.

A signal switch for a power tool has a paddle supported by a rocker that extends into the switch housing to pivot an actuating member. A circuit board is attached to the bottom of the switch. Depending on the position of the paddle, at least one microswitch extends from the circuit board into the switch in a position to be actuated by the actuating member. The circuit board includes a connector configured to connect to a cable (e.g., a ribbon cable). Circuit traces on the circuit board are electrically connected to the microswitch and the electrical connector. The interior of the switch housing is sealed from the external environment so that the mechanical components of the switch are protected from the environment.

The utility model relates to the technical field of tapping, in particular to an in-mold automatic tapping device which comprises an upper mold, mold columns are fixedly installed on the periphery of the bottom end of the upper mold, a lower mold is installed at the bottom end of the upper mold, open grooves are formed in the corners of the periphery of the lower mold, a tapping machine is installed on the lower mold, and the tapping machine is connected with the mold columns. A moving block is installed in the tapping machine, a screw tap is installed at the side end of the moving block, and a workpiece is arranged on the other side of the screw tap. According to the tapping device, after the die is completely closed in the working state, the purpose of thread forming is achieved through spiral movement of the extrusion tap, the in-die tapping machine combines stamping and tapping actions of a part needing to be tapped into a whole, tapping and stamping are directly and synchronously carried out on a punching machine, the working time can be saved by using the in-die tapping machine, and the working efficiency is improved. The arranged tapping device can reduce the damage probability of a screw tap through accurate positioning of the in-mold tapping machine, and meanwhile the probability of waste products caused by feeding errors can be 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.

A device (8) for predicting at least one physical parameter measured by a sensor rolling element in a rolling bearing of a machine is proposed. The device (8) comprises: - first means of determination (40) which are designed to determine at least one set of machine operating conditions which are representative of the operating state of the machine, - a memory (41) that stores a conditional imputation model (42) trained to predict the physical machine parameter from the machine operating conditions, and - Implementation tools (43) that are trained to implement the conditional imputation model (42).

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.

A tandem sub for a perforating gun assembly. The perforating gun assembly is used in a wellbore completion operation. The tandem sub first comprises a tubular body. The tubular body has a first end, a second end opposite the first end, and connection threads residing at each of the first and second ends. The tubular body has an internal bore, and tapered shoulders residing along the internal bore proximate each end. Each tapered shoulder defines an angle relative to the central axis of the internal bore. Further, each tapered shoulder forms a race dimensioned and configured to receive roller bearings. The roller bearings may be part of a grounding path. A cage secures the roller bearings against the race.

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.

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 dust falling device comprises a dust falling box, a spraying opening is formed in the bottom face of the dust falling box in an open mode, a dust falling spraying assembly is arranged in the dust falling box, the spraying assembly communicates with a water supply assembly, and multiple sets of telescopic supports are hinged to the edge, located on one side of the spraying opening, of the dust falling box. By arranging the dust falling box with the spraying assembly, when drilling operation is needed, the dust falling box is supported above the drilling operation position through the multiple sets of telescopic supports, the spraying assembly is started, water mist is sprayed out of the spraying assembly, and therefore dust falling in the drilling operation process is completed; meanwhile, due to the arrangement of the dust falling box and the multiple sets of telescopic supports, the device can be conveniently carried by workers; the water supply assembly can be directly connected to a water supply pipeline in a roadway, and therefore stable dust falling can be achieved when a worker drills holes in different positions.

Bearing assemblies, apparatuses, systems, and methods include bearing assemblies with bearing elements that are at least partially contained in the bearing assembly and components thereof.

The invention provides a drilling tool thrust bearing structure for deep well oil exploitation, and relates to the technical field of bearing structures, the drilling tool thrust bearing structure comprises a static ring assembly, a movable ring assembly and a ball assembly, the static ring assembly comprises an outer static ring, a lower-section raceway is formed in an inner ring of the outer static ring, the movable ring assembly comprises an inner movable ring, and a lower-section raceway is formed in an outer ring of the inner movable ring; the outer side wall of the inner moving ring is provided with an upper-section raceway, the ball assembly comprises a large ball, a small ball, a large elastic retainer and a small elastic retainer, and the large ball and the small ball are both located at the lower-section raceway and the upper-section raceway between the static ring assembly and the moving ring assembly. A rigidity-adjustable ball array is formed by connecting a large elastic retainer, a small elastic retainer and an elastic beam, and accurate positioning of balls is ensured through a double-curvature curved surface raceway; degradable polymer capsules are arranged to be filled with high-temperature lubricating grease, and oil is supplemented as required according to ball abrasion; the inner moving ring is matched with the shaft through a concave-convex spherical surface, the axis angle is automatically adjusted to compensate the deflection amount, and edge contact abrasion is avoided.

Embodiments of the invention relate to polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, PCD includes a plurality of diamond grains defining a plurality of interstitial regions. A metal-solvent catalyst occupies at least a portion of the plurality of interstitial regions. The plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteds (“Oe”) or more and a specific magnetic saturation of about 15 Gauss·cm3 / grams (“G·cm3 / g”) or less. Other embodiments are directed to polycrystalline diamond compacts (“PDCs”) employing such PCD, methods of forming PCD and PDCs, and various applications for such PCD and PDCs in rotary drill bits, bearing apparatuses, and wire-drawing dies.

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).

The invention provides an auxiliary dust falling device in the drilling process of an advanced drilling machine, and relates to the field of dust falling devices, the auxiliary dust falling device comprises a positioning mounting frame, an audible and visual alarm, a water flow transfer box, a water flow conveying pipe, a positioning mounting ring, a conductive metal sheet and a leakage detection sponge; the audible and visual alarm is in bolt connection with the upper part of the positioning mounting frame; the water flow transfer box is in bolted connection with the inner side of the positioning mounting frame; the water flow conveying pipe is in bolted connection with the left side of the water flow transfer box; the positioning mounting ring is in threaded connection with the left side of the water flow transfer box; the number of the conductive metal sheets is two, and the two conductive metal sheets are fixedly connected to the front side and the rear side of the positioning installation ring respectively. According to the invention, the inconvenience of regular manual detection of the sealing performance of the connection part is avoided, a large amount of time is saved, and the problem that long time is consumed for regular detection of the sealing performance of the connection part is solved.

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 proposes a device (8) for predicting at least one physical parameter measured by a sensorized rolling element in a rolling bearing of a machine. The device (8) comprises:-a first determination means (40) configured to determine at least a set of machine operating conditions representing an operating condition of the machine,-a memory (41) storing a conditional interpolation model (42) configured to predict the machine physical parameters from the machine operating conditions, and-an implementation means (43) configured to implement the machine physical parameters based on the conditional interpolation model (42). And a processor configured to implement the conditional interpolation model (42).

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.