55results about How to "Increase friction factor" patented technology

The invention discloses a surveying and mapping bracket device capable of being stably supported on a flat road surface. The surveying and mapping bracket device capable of being stably supported on the flat road surface comprises a base; a supporting rod is fixedly arranged at the top end of the base; three supporting sliding block sliding grooves with openings backing onto a center shaft of the supporting rod are evenly and fixedly formed in the supporting rod; a connecting balance weight mechanism is arranged at the position of each supporting sliding block sliding groove; three face expanding blocks are evenly and magnetically connected to the side wall of the base; anti-skid bottom plate blocks are fixedly arranged at the bottom ends of the face expanding blocks; hinge joint semispherical grooves with upward openings are fixedly formed in the top ends of the face expanding blocks; the hinge joint semispherical grooves are hinged to hinge joint semispheres; and hinge joint sliding rod sliding grooves with downward openings are fixedly formed in the bottom ends of the hinge joint semispheres. According to the surveying and mapping bracket device capable of being stably supported on the flat road surface, the contact area and the friction factor between the three sharp bottoms at the bottom end of the surveying and mapping bracket device and the ground can be automatically increased according to requirements, distance transportation of balancing weights can be automatically conducted according to the adjusted angle, and therefore supporting of a surveying and mapping bracket is further stabilized.

A belt breakage hydraulic protection apparatus for a belt conveyor comprises multiple belt breakage hydraulic protection apparatuses equipped on the belt conveyor, corresponding multiple sensors, a control system composed of a terminal programmable controller and multiple sub-station PLC programmable controllers via advanced communication modules, and multiple hydraulic pump stations, wherein the electric control system can acquire and judge the belt breakage signals in time and send out instructions without resulting in mistaken braking actions, the actuating mechanism of the belt breakage hydraulic protection apparatus employs the oil pumps of hydraulic pump stations and multiple airbag type accumulators to transport high pressure oil to a pull-push oil cylinder, a rotary cylinder and a lifting cylinder, the cylinders drive a top-rising beam below the upper belt to rotate and an up-pressing beam above the upper belt to move up and down to press the broken upper belt; the lifting cylinder lift a lifting beam to move up and down to press the broken lower belt. The top-rising, up-pressing beam and lifting beam have a case type structure, and friction plates are disposed between the beams and the belt contact surface to get big brake force and obvious brake effect, so that the conveyor will not generate loading stop phenomenon and abrade the belt.

The invention provides an underground mining braking sparkless friction material. The underground mining braking sparkless friction material comprises the following components by mass: 1-9 parts of flame retardant fiber, 15-30 parts of reinforcing fiber, 1-8 parts of mixed powder of nano copper and electrolytic copper, 5-16 parts of g-C3N4, 1-6 parts of zirconia, 1-6 parts of silicon carbide, 8-12 parts of a modified resin mixture, 2-5 parts of magnesium hydroxide, 10-28 parts of barium sulfate, 1-3 parts of friction powder, and 8-12 parts of wollastonite. The flame retardant fiber and magnesium hydroxide, wollastonite involved in the friction material play a synergistic flame retardant role together and ensures sparkless braking of the friction material.

The invention discloses a drop fuse replacement apparatus. The drop fuse replacement apparatus comprises a top plate, wherein a pair of linkage mechanisms are symmetrically connected to the front and back sides of the left end part of the top plate through a rotary shaft; each linkage mechanism comprises a rotary rod, a connecting plate, a hanging ring and a telescopic insertion rod; the connecting plate is provided with the hanging ring connected with a hook; each connecting plate is connected with a drop fuse; a fixed pulley and an insertion rod are arranged on the right side of the rotary shaft in sequence; the hook and the hanging ring connected with one connecting plate through the hook are arranged at one end of a cable rope penetrating through the fixed pulley; the other end of the cable rope is connected with a side wall of a winding column; a limiting insertion hole for the winding column to be inserted is formed in the insertion rod; a plurality of insertion holes are formed in the outer side wall of the rotary shaft of the fixed pulley; the telescopic insertion rod is arranged on the connecting plate; and a plug capable of being inserted and fixed in the insertion hole is arranged at the top of the telescopic insertion rod. According to the apparatus, a mounting angle of the drop fuse can be adjusted and the drop fuse can be firmly fixed and mounted; and a standby apparatus is provided, so that after a used device is damaged, the replacement and installation can be conveniently carried out and the repair efficiency can be improved.

The invention discloses a heat-sealing BOPP film for cigarettes. The BOPP film is prepared by directly co-extruding three layers of structures, namely a surface layer, a core layer and an inner layer; the surface layer is prepared from the following raw materials in parts by weight: 38-45 parts of a polypropylene random copolymer, 20-26 parts of a propylene-ethylene copolymer, 25-32 parts of an ethylene-methyl acrylate copolymer, 7.5-9 parts of modified crystal tourmaline powder, 1.5-2 parts of 1,6-hexanediol diglycidyl ether, 4.6-5.2 parts of a mixture of trimethylmethiloxy ammo-terminated polydimethylsiloxane and hydroxyl-terminated methyl-3,3,3-trifluoropropyl polysiloxane and 3-4.5 parts of polytetrafluoroethylene modified polyethylene wax powder; and the core layer is prepared from the following raw materials in parts by weight: 80-90 parts of homo-polypropylene, 12-17 parts of a propylene-ethylene copolymer, 7-9 parts of an ethylene-methyl acrylate copolymer and 2-3 parts of nano silicon dioxide. The heat-sealing BOPP film for the cigarettes has the advantages that the static / dynamic friction factor is small; the antistatic effect is good and lasting; and the low-temperature heat sealing performance is good, and the comprehensive performance is excellent.

The invention discloses a full-automatic efficient electrostatic dust collection device convenient to adjust. The device comprises a machine body; an exhaust cavity with an upward opening is formed inthe machine body; a dust collection cavity communicated with the exhaust cavity is formed below the exhaust cavity; a dust collection mechanism is arranged in the dust collection cavity; the dust collection mechanism comprises an anode dust collection barrel fixedly arranged in the dust collection cavity; a pressure sensor is fixedly arranged in the left end wall body of the anode dust collectionbarrel; and a mounting plate is fixedly arranged between the front end wall and the rear end wall of the dust collection cavity. The invention discloses a full-automatic efficient electrostatic dustcollection device convenient to adjust. A rotating plate and a cleaning block are arranged; the driving mechanism can drive the cleaning block to rotate and move downwards at the same time, so that the cleaning block can scrape off dust adsorbed on the inner wall of the anode dust collection cylinder, the dust adsorbed on the inner wall of the anode dust collection cylinder can be cleaned up automatically in time, the dust cleaning efficiency is improved, and the dust collection effect and efficiency are guaranteed.

The invention discloses a self-lubricating bearing. The main content is: the left inner ring is fixedly installed together with the right inner ring through bolts, and the outer ring is installed horizontally in the groove between the right inner ring and the left inner ring. Radial filler, axial filler is installed between the right end surface of the boss of the left inner ring and the bottom surface of the groove at the left end of the outer ring, and axial filler is installed between the left end surface of the boss of the right inner ring and the bottom surface of the groove at the right end of the outer ring. The filler, the right inner ring and the left inner ring are fixedly installed on the support through the dust-proof ring, and the dust-proof ring is stuck in the groove on the support, and the joint surface between the right inner ring and the left inner ring and the support A rubber gasket is installed, and the outer ring is fixedly installed on the right inner ring and the left inner ring through the end face collar, and an "O" type sealing ring is installed at the horizontal contact between the outer ring and the left inner ring, and the outer ring and the right inner ring An "O" type seal ring is installed at the contact point in the horizontal direction, the left end face clamp ring is stuck in the groove of the left inner ring, and the right end face clamp ring is stuck in the groove of the right inner ring.

The invention discloses an auxiliary mounting apparatus for a drop fuse. The auxiliary mounting apparatus comprises a top plate, wherein the right end part of the top plate is fixedly connected with a cross arm; the left end of the top plate is connected with a rotary rod through a rotary shaft; the rotary rod, a fixed pulley and an insertion rod are arranged at the lower part of the top plate in sequence from left to right; the lower end of the rotary rod is connected with a connecting plate; the connecting plate is connected with the drop fuse; one end of a cable rope penetrating through the fixed pulley is connected with the connecting plate while the other end of the cable rope is connected with a side wall of a winding column; a limiting insertion hole for limiting rotation of the winding column is formed in the insertion rod; a plurality of insertion holes are uniformly formed in the periphery of each of two radial surfaces of the fixed pulley; and a telescopic insertion rod is mounted on the upper surface of the connecting plate in a manner of corresponding to the insertion holes in the periphery of each of the two radial surfaces of the fixed pulley. The apparatus is mounted between the drop fuse and the cross arm, the drop fuse can be firmly mounted on the cross arm, and a mounting angle of the drop fuse can be conveniently and flexibly adjusted according to actual needs of an operation site to ensure the drop fuse to normally work.

The present invention discloses an OPLC joint closure end protection device. The protection device is fixed at the two ends of a joint closure. The protection device comprises an annular protective sleeve. A plurality of clamping jaws connected end to end through fasteners to form the annular protective sleeve. The annular protective sleeve is provided with inner holes and the tightness of the annular protective sleeve is adjustable. One side of each clamping jaw, in contact with an OPLC, is provided with a special-shaped structure. The protection device disclosed by the invention effectively prevents the twisting and the sliding of a cable.

An active-type roller vehicle comprises an active chain wheel and a guiding wheel which are connected through a roller chain. The active chain wheel is connected with a gear motor through a transmission shaft, the roller chain comprises rollers and roller pins, the roller pins are connected with the rollers through holes formed in the two ends of the roller pins, and the rollers are connected intothe annular roller chain in series through the roller pins. According to the active-type roller wheel, the gear motor drives the active chain wheel to drive the roller chain to move along a fixed path, so that a large heavy load component is driven. The roller vehicle chain wheel adopts the upper-arranged mode, only bears torque and does not bear a radial load, the life of a driving device is effectively prolonged, and thus the roller vehicle chain wheel is specially suitable for the occasion that a cart operation mechanism needs to bear an over-weight load, but the structural arrangement space is small, and the size is limited; and the gear motor driving device is applied to a roller vehicle bearing structure to enable the roller vehicle bearing structure to become the active-type rollervehicle, and a driving mechanism special for driving a crane cart to operate does not need to be arranged any longer.

The invention discloses a spinning type soil loosening device for cultivation of sugarcane. The device comprises a rack, a solid rod, a fixing block and a curved surface support frame, wherein an extending thread section is arranged at the bottom of the solid rod and sleeved with a lock sleeve and a lengthened casing pipe, the lengthened casing pipe is matched with the extending thread section foruse, lengthening of the device can be realized, the use comfort is improved, the lengthened casing pipe is longer than the extending thread section, a fixing ring is mounted at the bottom of the lengthened casing pipe, a fixing block is mounted at the top of the solid rod, the surface of the fixing block is connected with the curved surface support frame through a bolt, a pull ring is mounted atone end of the bolt, a protective casing is mounted on the surface of the curved surface support frame, a tightener is mounted at the bottom of the protective casing, limiting springs are mounted in the protective casing, and rake teeth are mounted at the top of the curved surface support frame.

The invention relates to a preparation method of a high-strength paper-based friction composite material, which belongs to the technical field of friction materials. According to the invention, polypropylene fiber, bamboo fiber and aramid fiber are used as raw materials; carboxymethyl cellulose, polyvinyl alcohol and methyl triethyl silane are added; the high-strength paper-based friction composite material is prepared; the nano aluminum oxide, the silicon carbide microspheres and the talcum powder are added; the added nano aluminum oxide can be used as a hard point grinding material of the paper-based friction material; the friction factor and the wear resistance of the friction material can be effectively improved; the silicon carbide microspheres are added, the holes can enable the adhesive to be better bonded with the resin; the bonding strength of the paper-based friction material is improved, oil flowing can be promoted due to the holes, the friction material is more heat-resistant, the friction factor and the energy absorption rate of the friction material can be improved, the friction performance of the material can be adjusted by adding talcum powder, and the friction material has better comprehensive performance.

The present invention relates to a marine gearbox oil composition, which is composed of the following components in mass percentage: (a) at least one synthetic base oil; and (b) at least one antioxidant; (c) at least one Sulfur-containing extreme pressure agents; (d) at least one phosphorus-containing antiwear agent; (e) at least one friction modifier; (f) at least one demulsifier; (g) at least one rust inhibitor; ( h) at least one metal deactivator; (i) at least one antifoam agent. The marine gearbox oil composition of the present invention has excellent high load-carrying performance, wear protection, oxidation stability, anti-emulsification performance and anti-corrosion performance, especially has excellent clutch wear protection performance and sealing material compatibility. The invention can be used in a marine gear box with a clutch, and can fully adapt to the improvement of oil product performance requirements brought about by the technical progress of the current marine gear box.

A manufacturing method of a sliding shock insulation support comprises the following steps that a material of the support is selected; the shape of the support is designed; the support is machined; material selecting of the support comprises material selecting of support outer seals, inner fillers, magnets and interlayer underlying surfaces; the support shape design comprises the steps that annular steel channels serve as the outer seals of an upper-layer support body and a lower-layer support body correspondingly, the outer seals are filled with materials with the shore hardness being 80 or above, the permanent magnets are evenly arranged in the centers of the filled materials in a surrounding mode, and the two layers of interlayer underlying surfaces are arranged on the filled materials;and support machining comprises the technologies of filled material machining and magnetic and interlayer underlying surface bonding. A formed device has the technical advantages of being small in abrasion, high in sensitivity, good in filter performance, low in energy consumption, small in impact effect, high in self-resetting capacity, capable of saving spaces, good in tensile property and thelike, and the manufacturing method has important significance in solving the technical problems that a shock insulation support in an area with high seismic intensity is large in deformation, remarkable in impact effect, poor in tensile capacity and the like.

The invention discloses a multi-size screw fastening head placement platform for a mold clamping system, which belongs to the technical field of mold clamping systems. A multi-size screw fastening head placement platform for a mold clamping system includes a placement mechanism, multiple A screw fastening head and a fixing mechanism, the screw fastening head includes a linkage wheel, the top of the linkage wheel is fixedly connected with a connector, the side of the connector is fixedly connected with a hemispherical connection block, and the bottom end of the linkage wheel is fixedly connected with a joint. The connecting rod is fixedly connected with a fastening rod for fastening the screws at the bottom end of the connecting rod. The placing mechanism includes a placing plate, and the bottom of the placing plate is fixedly connected with four support frames distributed in a rectangular array. Two positioning blocks. It can automatically reset and calibrate the screw fastening head on the platform, so that the screw fastening head can be reset accurately, preventing the screw locking robot from being unable to grasp the screw locking robot, thereby improving production efficiency, and is easy to fix and install.