50results about How to "Reduce hard friction" patented technology

A rock burst/rock explosion analog simulation energy storage-time tank device belongs to the technical field of geotechnical engineering. By adopting the device, the study on the mechanism of rock burst/rock explosion can have breakthrough, the characteristics of energy and time factors which cause the rock burst are considered, and an elastic energy accumulating process can be recorded, and the time required by elastic energy releasing can be recorded. The lower ends of four long rigid rods and four short rigid rods of an extensometer are respectively connected with a strain gage, the lower ends of the four long rigid rods and the lower ends of the four short rigid rods of the extensometer are respectively fixed into an extensometer placement tank of a lower rigid pressing plate, the upper ends of the four long rigid rods of the extensometer are in contact with a 45-degree chuck arranged at the lower end of the upper rigid pressing plate; screw holes of the side wall of the four short rigid rods of the extensometer are in threaded connection with screws; an upper energy storage-time tank and a lower energy storage-time tank are respectively connected with an upper pressure sensor and a lower pressure sensor, and the upper pressure sensor and the lower pressure sensor are respectively connected with piston rods of an upper load cylinder and a lower load cylinder. The device is used for rock burst/ rock explosion analog simulation experiments.

The invention discloses a tray separation device, which comprises a base, a movable frame and two regulating rails, wherein the movable frame and the two regulating rails are arranged on the base, the movable frame does forward and backward movement on the base, a tray pushing part and a first support part are convexly arranged on the upper surface of the movable frame, the two outer sides of the movable frame are respectively and convexly provided with position limiting blocks in relative arrangement, the two regulating rails respectively extend in forward and backward directions and are respectively and movably erected at the two sides of the movable frame, the inner sides of the two regulating rails are respectively and convexly provided with a first regulating block and a second regulating block in forward and backward arrangement, the position of the position limiting block is limited between the first regulating block and the second regulating block, at least two inclined surfaces are respectively formed at the front and back parts on the upper surfaces of the two regulating rails, a second support part is arranged on the base in a way of corresponding to the position beside each inclined surface, and regulating shafts are horizontally and convexly arranged at the inner sides of the second support parts. Compared with the prior art, the tray separation device has the advantages that the hard friction problem in the tray separation is greatly reduced, the separation operation is stable and reliable, the separation efficiency is high, and the tray separation device is applicable to various kinds of products requiring the separation operation.

The invention relates to the technical field of engineering surveying and mapping, and discloses an surveying and mapping instrument for engineering surveying and mapping. The instrument comprises a bearing plate, and a connecting column is fixedly mounted at the bottom of the bearing plate. According to the surveying and mapping instrument for engineering surveying and mapping, a lever is formed through the connection relation of the first connecting rod, the second connecting rod and the four-corner balance ball, the supporting rods in the inclined state are subjected to contraction adjustment under the action of the auxiliary balls according to the lever principle, and when the independent supporting rod on one side is subjected to telescopic change, the other three supporting rods can automatically adapt to the change of the inclined supporting rods under the lever action formed by the first connecting rod, the second connecting rod and the four-corner balance ball to keep the overall balance degree of the surveying and mapping instrument; an internal threaded pipe is inserted from a connecting groove formed in the bottom end of the interior of the connecting frame; and the top of the internal threaded pipe is attached to the bottoms of the first connecting rod and the second connecting rod which keep balance, and the device can automatically calibrate balance and is higher in practicability.

The invention relates to a long-ring rapid steamer, in particular to a ring forming mechanism of the long-ring rapid steamer, belonging to the technical field of printing and dyeing equipment. The ring forming mechanism comprises crank combination parts (3), a ring forming plate (4), a main track (6), a ring chain (8) and an auxiliary track (10), wherein the ring forming mechanism comprises a plurality of the crank combination parts (3), each crank combination part (3) comprises a clamping sleeve (3.1), a crank (3.2), a pin shaft (3.3), a connecting plate (3.4) and a small rolling wheel (3.5), the outer edge surface of each clamping sleeve (3.1) is the tooth surface, the auxiliary track (10) comprises a front oblique section (10.2) and a rear straight section (10.1), a rack (10.3) is arranged on the oblique section (10.2) and the rack (10.3) is meshed with the outer edge tooth surfaces of the clamping sleeves (3.1). The ring forming mechanism of the long-ring rapid steamer can continuously form a ring in a non-intermittent manner, thereby greatly improving the production efficiency of the rapid steamer; furthermore, the rapid steamer is good in operation stability, small in noise and longer in service life.

The invention belongs to the technical field of material friction and lubrication, and particularly relates to a nanometer grinding agent capable of reducing gear vibration, a gear surface grinding agent, and preparation and application thereof. The nanometer grinding agent capable of reducing gear vibration is prepared from nanometer stage titanium dioxide, zirconium oxide, aluminum nitride, elemental copper, cerous fluoride, molybdenum disulfide and lead oxide. The invention also provides the gear surface grinding agent containing the nanometer grinding agent. The gear surface grinding agentcan reduce the starting abrasion of a friction pair and hard friction in the boundary lubrication state, and can also perform mechanical restoration and polishing on concave pits or bulges on the gear engaging surface, so that the surface of the friction pair such as a gear can be smoother; the surface microstructure of the gear friction pair can be effectively improved in a short time; the flatness degree of the transmission pair contact surface can be improved; the gear vibration can be effectively reduced; the goals of transmission vibration reduction and more stable operation can be achieved; the grinding agent is applicable to the surface microdefect correction of most metal abrasion pairs; the vibration of machinery due to surface micro appearance defects of movement pairs can be reduced.

The invention relates to the technical field of electric power construction, and discloses an anti-shaking pay-off rack used for electric power construction. In order to improve cable pay-off stability in the electric power construction, a supporting mechanism is fixed on one side of a pushing handle above a supporting bottom frame; a wire roller is clamped with a positioning clamping cover through a bearing pedestal; the inner side of a positioning foundation bed is symmetrically fixedly provided with a spacing sliding rod; and the outer side of each spacing sliding rod is clamped with a down-pulling sliding seat and an up-pulling sliding seat in sequence from front to back. Through the supporting of the supporting mechanism for the wire roller, a worker can conveniently carry out installing, fetching and placing work of the wire roller, meanwhile, a position stopping bandage on the inner side of the supporting mechanism is used for sheathing the wire roller, so that the worker can conveniently control a wire roller pay-off speed, through the combination of the down-pulling sliding seat and the up-pulling sliding seat, a situation that the cable shakes to a large extent due to rigid pulling in a pay-off process can be lowered, and therefore, the operation intensity of the worker is lowered.

The invention discloses a hydraulic bolt type wind power mounting ship locking device. The hydraulic bolt type wind power mounting ship locking device comprises a ring beam assembly, bolt assemblies and locking assemblies, wherein four groups of bolt assemblies and four groups of locking assemblies are arranged and are respectively arranged at corresponding positions of the ring beam assembly, namely bolt oil cylinder bases of the bolt assemblies are connected with locking support plates on the ring beam assembly through bolts; bearing pins of the locking assemblies are connected with bearingpin holes of the bolt oil cylinders and the ring beam assembly in a matching way; during operation, the locking assemblies are matched with pile leg pin blocks, and the pin blocks are locked and matched through sliding friction among the arc-shaped pin blocks on the end faces under the action of the bolt oil cylinders by adjusting springs; after the pin blocks are completely matched, the adjustingsprings are compressed, and a load is transferred to a bearing block. According to the hydraulic bolt type wind power mounting ship locking device, a ship body can be locked at any position relativeto a pile leg, the friction damage of the locking device is reduced, the service life of the locking device is prolonged, and the safety performance of the locking device is improved.

The invention discloses a solar power generation panel capable of automatically cleaning surface dust and a cleaning method thereof. The solar power generation panel comprises a plurality of solar power generation panels arranged on a rotating base, a rotating shaft is arranged on the rotating base, a supporting frame is arranged above the rotating shaft, and the solar power generation panels are arranged above the supporting frame; moving parts are arranged on the edges of the two sides of each solar power generation panel, blowers and dust removal mechanisms are arranged on the moving parts, each dust removal mechanism comprises an assembling rod and a plurality of cleaning components arranged on the assembling rod, each cleaning component comprises an installing shell, a circumferential baffle is arranged on the lower portion of each installing shell, and spiral blades are arranged on the inner side surface of the circumferential baffle. A dust collection box is connected to one side of the spiral blades and arranged on the inner side surface of the circumferential baffle, a rotary brush is arranged below the installing shell, bristles are arranged at the bottom of the rotary brush, and a water seepage pipe is arranged between the bristles. By arranging the cleaning device on each solar power generation panel, automatic cleaning of each solar power generation panel can be completed, and a large amount of manpower and material resources are saved.

The invention discloses a mathematic drawing tool storage box. The mathematic drawing tool storage box structurally comprises a box body, a box cover, an upper box body, a lower box body, a slide groove and a slide block, wherein a handle is arranged at the right side surface of the exterior of the box body; a lower lock latch is arranged at the surface of the front end of the exterior of the boxbody; the box cover comprises a rotary shaft, a baffle plate, a handle and an upper lock latch, the rotary shaft is arranged at the bottom part of the box cover, the box cover is connected with the box body through the rotary shaft, and both ends of the baffle plate are arranged in the middle part of the box cover by threads. The mathematic drawing tool storage box has the advantages that the upper lock latch and the lower lock latch are embedded and connected through a lock tongue, so that the stability in carrying by a teacher is ensured, and the destroy to the internal structure by a student after class is prevented; vertical separating plates are staggered and distributed in the upper box body and the lower box body, so that the storage capacity is large, and the drawing tools are moreclearly classified, and can be conveniently fetched by the teacher in use; pulleys are arranged at both sides of the bottom part of the lower box body, and are moved on the slide groove, so that therigid friction between the bottom structure of the lower box body and the bottom part of the box body is greatly reduced, and the bottom structure of the box body is effectively protected.

The invention provides a blind hole boring cutter assembly. The blind hole boring cutter assembly comprises a cutter head main body, a rotating body, a cutter rod and a rotating shaft. A cutter head is arranged on the periphery of the cutter head main body and used for cutting a hole inner wall. The rotating body is used for rotating the cutter head during cutting, a plurality of height-adjustablesupporting blocks are arranged on the periphery of the rotating body, and during cutting of the cutter head, the supporting blocks make contact with the hole inner wall. The cutter rod is provided with a hand-held part. The rotating shaft penetrates through the rotating body, and the two ends of the rotating shaft are connected with the cutter head main body and the cutter rod correspondingly. When the cutter head cuts the hole inner wall, a hole of a machining piece rotates, the cutter head main body and the cutter rod move in the horizontal direction and simultaneously rotate with the holein the same direction under driving of static friction force, and the rotating speed of the rotating body is the same as that of the hole; and when the cutter head cuts the hole inner wall, the rotating speed of the hole of the machining piece is 50-300 r/min. The blind hole boring cutter assembly has the effects that friction of the supporting blocks is reduced, vibration is eliminated, and chipremoving is facilitated.

The invention relates to a semi-sealed device of a four-ram blowout preventer of a coiled tubing and a method. According to the technical scheme, an expandable semi-sealed rubber cylinder is installedat the center of a blowout preventer body, the self-locking end of the tail portion is fixed to the blowout preventer body through a rubber opening pressing ring, and a circular annular cavity is formed; and a semi-sealed expansion control block is fixed to the outer side of the blowout preventer body, an oil inlet buffer groove and an oil outlet buffer groove are formed in the inner side of theblowout preventer body, and the oil inlet buffer groove corresponds to the expandable semi-sealed rubber cylinder of the blowout preventer body. The semi-sealed device of the four-ram blowout preventer of the coiled tubing and the method have the beneficial effects that the expandable semi-sealed rubber cylinder is of an integral structure, the expandable semi-sealed rubber cylinder is fixed in aspecial-shaped cavity of the blowout preventer body through the rubber opening pressing ring, during use, the expandable semi-sealed rubber cylinder can be self-locked on the blowout preventer body bypressing, the other side expands to seal the outer wall of the coiled tubing in a contacted mode, mutual balance of the pressure of internal and external of gas or liquid is achieved, leakage is notprone to occurring, using is more reliable, and the service life of the expandable semi-sealed rubber cylinder is prolonged.

The invention relates to the field of digital technology, in particular to a fast-charging data line adaptable to various mobile phones, which comprises a transmission line body, and two ends of the transmission line body are respectively provided with a power supply connecting part and an equipment connecting part. The equipment connecting part comprises a base arranged on the transmission line body and a plurality of inserting parts which are in different configurations and are detachably connected to the base; one side, far away from the transmission line body, of the base is provided with a charging cavity for butt joint of a single insertion part; the plugging part comprises a middle chip and a butt joint end connected to the middle chip, and the inner wall of the charging cavity is provided with a transmission part which can cooperate with the middle chip for communication connection. The method and the device have the effect of improving the convenience when a user uses the same data line to quickly charge different mobile phones (the same charging interface).

The invention relates to the technical field of aluminum product clamps, in particular to an aluminum product clamp capable of preventing the surface of an aluminum product from being damaged during grinding. The aluminum product clamp comprises a fixing frame, a clamping plate is mounted at the lower end of the fixing frame through a clamping mechanism, and a fixed seat is mounted at the middle end of the fixing frame through a mounting mechanism; and a movable seat is arranged on the surface of the fixed seat through a telescopic mechanism, embedding grooves are formed in the surface of themovable seat, balls are movably mounted in the embedding grooves, a supporting frame is mounted at the upper end of the fixing frame through a fastening mechanism, and a hole is vertically formed in the center of the supporting frame. By arranging the balls, the balls protrude out of the surface of the fixed seat so that the balls can bear the aluminum product placed on the fixed seat, the balls can be driven to rotate when the aluminum product moves, friction force is converted into kinetic energy, hard friction force is reduced, and the situation that the surface of the aluminum product is abraded due to hard friction is avoided.