51results about How to "Increase friction area" patented technology

The invention relates to the technical field of land surveying and mapping, and discloses a surveying and mapping positioning device for land surveying and mapping, which comprises a fixed table, a supporting table, a connecting frame and a servo motor, and further comprises a rotating table and a top seat, the connecting frame is fixedly connected to the inner side of the lower end surface of the fixed table, and the supporting table is fixedly connected to the outer side of the lower end surface of the fixed table; the servo motor is fixedly connected with the connecting frame through the rack, and the output shaft end of the servo motor is fixedly connected with the rotating table; the lifting mechanism is arranged on the lower end face of the supporting table, and the lifting mechanism is used for adjusting the height of the supporting table; the clamping mechanism is arranged between the rotating table and the fixed table; and the cleaning mechanism is arranged on the side wall of the adjusting clamping plate. Through the arrangement of the clamping mechanism, the surveying and mapping instrument can be quickly limited, so that the surveying and mapping instrument is prevented from toppling over when the surveying and mapping instrument is used in severe weather, and the safety of the surveying and mapping instrument during use is ensured.

The invention discloses a coal crushing device for safe sampling of pulverized coal, and relates to the technical field of coal crushing. The device comprises a supporting assembly, a powder tank is arranged in the supporting assembly in a penetrating mode, a funnel is arranged at the top of the powder tank and communicated with the interior of the powder tank, a stabilizing plate is arranged in the supporting assembly and located below the interior of the powder tank, a spiral sampling assembly is arranged on the right side of the powder tank, and a sampling pipe is arranged at the bottom of the spiral sampling assembly; a particle preventing device is arranged in the powder tank, an anti-bonding device is arranged below the particle preventing device, and an anti-erosion device is arranged on the inner side of the anti-bonding device. In the coal crushing process, the movement range of the crushing assembly is continuously changed, the phenomenon that part of coal is indirectly not in contact with the crushing assembly due to traditional static crushing machining is distinguished, and the phenomenon that coal powder is uneven in size due to different coal crushing frequencies is avoided.

The invention discloses a friction stir welding stirring head capable of improving the flowing efficiency of base metal, which is characterized by comprising a friction stir welding stirring head body, the friction stir welding stirring head body comprises a clamping part, one end of the clamping part is provided with a spiral stirring needle, and the other end of the clamping part is provided with a stirring rod; the spiral stirring needle spirally shrinks towards the end part of the stirring needle, and a shaft shoulder part is arranged outside the radial peripheral surface of the spiral stirring needle; the shaft shoulder part is a concave surface inner asymptote groove shaft shoulder part; the spiral stirring needle is of a conical thread equally-divided three-section-shaped structure. And the end part of the spiral stirring needle is provided with a convex end head structure. According to the design of the end part of the stirring needle, the overall flowability of workpiece base metal can be effectively improved, a smaller crystal grain structure is generated, the forming is more stable, and the quality of a welding seam is enhanced.

The utility model provides a stainless steel wire rope detection device which comprises an installation shell, a protection shell is fixed on the left side of the installation shell, a cable winch is in shaft connection with the inner side of the protection shell, a traction cable is wound on the inner side of the cable winch, and guide concave wheels are in shaft connection with the upper portion and the lower portion of the right side in the protection shell respectively. A tension sensor is fixed to the right end of the traction cable, a steel wire rope end fixing device is installed on the right side of the tension sensor, and steel wire rope anti-loosening locking devices are installed on the upper portion and the lower portion of the steel wire rope end fixing device respectively. Through the arrangement of the semicircular protective cover, the limiting clamping groove, the limiting protrusion, the damping buffer and the buffer spring, the steel wire rope on the inner side of the installation shell can be protected, the situation that in a tensile experiment, the steel wire rope is fractured, and consequently the fractured position splashes to scratch workers is prevented, and the safety effect of the device is improved.

The invention belongs to the technical field of profile steel machining, and particularly relates to cutting equipment for profile steel machining, which comprises a supporting base, a fixed block is slidably arranged on the supporting base, a plurality of displacement sliding blocks are slidably connected to the inner top of the supporting base, and a guide rack is fixedly connected to the bottom of each displacement sliding block. The guide racks are symmetrically and fixedly connected to the bottoms of the two ends of the displacement sliding block. First transmission gears are symmetrically and rotationally connected to the outer surface of the supporting base. Through rotation of a rotating roller, H-shaped steel moves in the direction close to a laser spray gun under the action of balls on a limiting block and a moving block and the rotating roller, and the problem that when the H-shaped steel at the clamping position of a clamping device needs to be cut, due to the fact that the clamping device fixes the H-shaped steel, the clamping device needs to be reset, and the H-shaped steel moves is solved. The problem that the position, needing to be cut, of the H-shaped steel does not make contact with the clamping device is solved, the production efficiency of H-shaped steel machining is improved, and the machining cost is reduced.

The utility model relates to the lightning arrester monitoring technical field, and discloses a lightning arrester on-line monitoring device comprising a monitoring device body, the rear end of the monitoring device body is provided with an access column, one side of the monitoring device body is provided with an electricity taking assembly connected with a lightning arrester, and an electric wire is arranged between the electricity taking assembly and the access column. The power taking assembly comprises a circular ring column and a strip-shaped plate, a clamping piece unit is arranged in a cavity of the circular ring column, the clamping piece unit comprises a clamping plate and an anti-skid plate, a driving unit for moving the connecting rod is arranged on one side of the strip-shaped plate, and the driving unit comprises a moving plate, the connecting rod and a rotating shaft. According to the device, the clamping piece unit is arranged in the cavity of the circular ring column, and the driving unit is arranged to move the clamping piece unit, so that bolt columns at the bottom ends of lightning arresters with different diameters can be clamped and fixed, and the practicability of the device is higher.

The utility model discloses an auxiliary frame connecting plate with high bearing capacity, and particularly relates to the technical field of automobile parts, the auxiliary frame connecting plate comprises an upper support plate, the bottom of the upper support plate is fixedly connected with a lower support plate, and the bottom of the lower support plate is fixedly connected with an emergency speed reducing mechanism; the emergency speed reducing mechanism comprises two fixing plates, fixing rings are fixedly connected to one sides of the tops of the two fixing plates, motors are fixedly connected to the interiors of the two fixing rings, rotating rods are coaxially connected to the output ends of the two motors, threads are arranged at the two ends of each rotating rod, and limiting blocks are movably connected to the outer sides of the two rotating rods. And two positioning plates are fixedly connected to the front sides of the two fixing plates. According to the emergency deceleration device, the emergency deceleration mechanism is arranged, the threaded blocks are driven by the rotating rod to push the cross rod and the wear-resisting baffle to extend downwards through the supporting arm, the friction area between a vehicle chassis and the ground can be increased under the emergency condition when a vehicle is out of control, and the vehicle can be effectively decelerated.

The utility model discloses lady homewear which comprises an upper garment, a pants body, a first adjusting assembly and a second adjusting assembly. An upper garment and a pants body which are made of the same fabric are detachably connected together, and the fabric of the upper garment and the pants body sequentially comprises a waterproof layer, a heat preservation layer and a heating layer from outside to inside; the heating layer is formed by blending far infrared radiation fibers and carbon fibers; a first adjusting assembly and a second adjusting assembly which are used for adjusting the sleeves and the trouser legs so that the sleeves and the trouser legs can be attached to the arms and the legs of the human body respectively are arranged on each sleeve of the upper garment and each trouser leg of the trouser body respectively. The inner diameters of the sleeves and the trouser legs of the homewear are adjusted through the adjusting assemblies, on one hand, the homewear can be suitable for people of different body types to wear out, on the other hand, the contact area of the heating layer and the human body is increased, the heating area is increased, and the heat preservation effect is further improved.

The tow box comprises inner covers, a surrounding plate and a lining plate, the surrounding plate extends in the height direction and is closed in the horizontal direction, the inner covers are arranged on the inner side of the top and the inner side of the bottom of the surrounding plate respectively and are arranged in a mirror image mode in the height direction relative to the inner covers, and the lining plate is arranged on the inner sides of the inner covers. A long-edge side plate and a wide-edge side plate are arranged on the side face of the inner cover, and a connecting unfolding structure, an arc angle sealing structure, a side face sealing structure and an extrusion deformation abutting structure are arranged between the long-edge side plate and the wide-edge side plate. In the turnover process, tows are placed in the box body, the tows have a certain size and weight, the surrounding plates are pushed to deform outwards in the horizontal direction, in the deformation process, the side edges of the surrounding plates bulge outwards, the corner positions of the surrounding plates are tightened inwards, the corner positions of the inner covers deform inwards through the arranged first bent sections and second bent sections, and therefore the inner covers can be turned over. And the corner angles are better attached to the deformed surrounding plate corner angles, gaps are reduced, and the interior of the box body is prevented from being polluted by the outside.

The single-groove double-roller efficient peeling machine comprises a first peeling box body, a second peeling box body and a third peeling box body, and heightening bases are fixedly installed at the positions, close to one sides, of the lower surfaces of the interiors of the first peeling box body, the second peeling box body and the third peeling box body; a second roller is movably installed on the lower surface, located on one side of the heightening base, of the interior of each of the first peeling box body, the second peeling box body and the third peeling box body, a first roller is movably installed on the upper surface of each heightening base, and a motor speed reducer driving system is connected to the end of each first roller and the end of each second roller. According to the single-groove double-roller efficient peeling machine, the friction area of wood can be increased, the peeling rate and the production yield of the peeling machine are improved, the peeling rate is greatly improved and can reach more than%, the peeling precision can be guaranteed, meanwhile, the abrasion resistance of the grinding teeth is improved, maintenance and replacement of the grinding teeth of the peeling machine are facilitated, and the service life of the peeling machine is prolonged. And the use and maintenance cost of users is greatly reduced.

The utility model relates to carbon block clamping device technical field, concretely is a kind of anode carbon block clamping device, including the first clamping arm and second clamping arm for clamping anode carbon block, the bottom end inboard of first clamping arm and second clamping arm are all fixedly connected with clamping plate;Multiple connecting holes are equipped on clamping plate, bolt is connected in connecting hole;Bolt includes bolt head and screw rod, bolt head is located the inboard of clamping plate and end portion protrudes connecting hole, the inboard of bolt head is equipped with antiskid boss;Screw rod protrudes to the outside of clamping plate and is connected with nut;By setting bolt, and setting antiskid boss on bolt head to replace antiskid nail, that is, increase the friction area with anode carbon block, increase friction force, also avoid antiskid nail to stab anode carbon block, avoid carbon block damage to affect process production and carbon block consumption.

The invention relates to a drive axle assembly structure of a wet brake system of a 5-12T forklift, and relates to the technical field of wet brake drive axles. Comprising an axle housing, a brake and a hub, and the brake adopts a wet brake to brake the hub; a brake gear ring is fixed to the side, close to the wet brake, of the hub and conducts friction braking through a friction pair in the wet brake, and then the hub is braked. And a rotating shaft lip-shaped sealing ring and a box type oil seal are arranged between the brake gear ring and the wet brake for double sealing. The wet brake is adopted, the installation sealing mode of the wet brake is designed, and the defects of a shoe type or caliper disc brake in the prior art in the aspects of sealing performance, stability, heat dissipation effect and anti-pollution capacity are overcome; and the structure and the material process of the transmission gear pair of the main speed reducer are optimized, so that the size and the weight are reduced while the strength is ensured.

The present invention specifically relates to a forklift wet drive axle, including a main reducer assembly, a bridge assembly, a half-axle, a wheel-side reducer, a wheel hub, and a wet brake assembly. The bridge assembly is covered and arranged on the outer circumference of the half-axle, the main reducer assembly is arranged in the middle of the half-axle, two wheel-side reducers are arranged and arranged at both ends of the half-axle respectively, two wheel hubs are arranged and arranged on the inner sides of the two wheel-side reducers respectively, and two wet brake assemblies are arranged, which are respectively connected and fixed to the wheel hub by bolts; the wet brake assembly includes a brake piston, a clutch plate, a disc friction plate, and a brake flange, and the brake piston, clutch plate, disc friction plate, and brake flange are arranged in sequence, and the brake flange is fixed to the wheel hub by bolts. The forklift wet drive axle of the present invention has a compact structure, a large braking torque, high braking stability, good sealing, strong anti-pollution ability, good cooling effect, is not limited to the use environment, and has a long maintenance cycle.

The utility model discloses a fixing structure for a lower swing arm of a new energy automobile, which belongs to the related technical field of automobile structures and comprises a frame, a first fixing seat, a first elastic flat washer, a second fixing seat, a second elastic flat washer, the lower swing arm, a third fixing seat, a third elastic flat washer, a fourth fixing seat and a fourth elastic flat washer. The first fixing seat and the second fixing seat as well as the third fixing seat and the fourth fixing seat are of split structures and are welded on the frame in pairs, so that the stress of the fixing seats is reduced, the strength of the fixing seats is improved, and the potential quality hazard that the fixing seats are cracked and fractured under the conditions of high load and long-time use is solved; the lower swing arm first spacer bush and the lower swing arm second spacer bush are connected with the fixing seat and the middle through the elastic flat washers, stability and reliability of connection between the lower swing arm and the fixing seat are improved, the potential quality hazard that the lower swing arm is loosened and generates abnormal sound under high load and long-time use is solved, and the lower swing arm is suitable for being further popularized and used by large and small vehicle factories.

The invention discloses a novel linear friction anti-beam-falling device and a using method thereof. The novel linear friction anti-beam-falling device comprises a first connecting base, a second connecting base and a friction limiting component. The first connecting seat and the second connecting seat are respectively arranged at proper positions of a bridge pier and a bridge superstructure, and the two ends of the friction limiting component are respectively and stably connected with the first connecting seat and the second connecting seat; the first connecting base and the friction limiting component are connected in a pin shaft connecting mode, and the connecting hole is arranged to be in a long hole shape to connect the first connecting base and the friction limiting component, so that when the bridge is structurally deformed due to temperature difference changes, the beam falling prevention device does not generate axial force to respond to the structural changes of the bridge; the joint of the first connecting base and the friction limiting component and the joint of the second connecting base and the friction limiting component are in multi-layer connection, the friction damper and the limiting component are connected in parallel through the friction limiting component, the friction surface and the friction area are increased under the condition that the installation difficulty is not increased, and the beam falling prevention function is enhanced.

The utility model relates to the technical field of potato processing, in particular to a cleaning device applied to potato processing, the device comprises a base, a fixed cylinder, a rotating cylinder, a transmission assembly and a collecting box, the fixed cylinder is horizontally erected on the base through a lifting frame and a supporting column, and the two sides of the fixed cylinder are hinged and supported by hydraulic rods to achieve inclined discharging; the rotating cylinder is arranged in the fixed cylinder and provided with drainage holes in the surface. The transmission assembly drives the rotating cylinder to rotate, the horizontal gear is meshed with the vertical gear to enable the brush roller to rotate reversely, and water outlet holes in the surface of the brush roller are matched with a water source to achieve spraying cleaning. The side face of the collecting box is provided with a sliding groove and a detachable screen, and potatoes are classified according to the size through screening of the screen. Reverse movement of the rotating cylinder and the brush roller is achieved through gear transmission, the cleaning efficiency is improved, discharging is facilitated through a hydraulic inclined structure, the processing convenience is improved through the screen classification design, and the device is suitable for the potato pretreatment cleaning procedure.

The present invention provides a fabric washing device, which relates to the field of textile cleaning devices, and includes a washing box with a first opening on one side and a second opening on the other side, an isolation portion protruding from the bottom of the washing box, the isolation portion and the side of the washing box with the first opening form a washing space, and the isolation portion and the side of the washing box with the second opening form an isolation space; a cleaning mechanism, including a first driving member and a plurality of stirring rods, the first driving member is arranged on the washing box, the driving end is connected to the stirring rod, and is used to drive the stirring rod to rotate, so as to drive the fabric in the cleaning space to rotate and rub against each other; a flattening mechanism is arranged in the isolation space, and is used to flatten the fabric. This solution increases the friction area of ​​the fabric, so that the force acting on the fabric is increased, and the stains inside the fabric will be removed through multiple frictions, which has a significant cleaning effect. The present invention also provides a control system for the fabric washing device.

The invention relates to the technical field of transformer feeding and discloses a feeding and discharging device for transformer oil tank welding and a using method thereof.The feeding and discharging device comprises a main body, a first connecting plate is fixedly connected to the top of the main body, four limiting plates are fixedly connected to the side, close to the main body, of the first connecting plate, and a plurality of guide rods are fixedly connected to the inner wall of the main body; the guide rods are symmetrically distributed in pairs, and the guide rods in each group are distributed at equal angles. When the rubber plate is deformed, the contact area with the oil tank is obviously increased, so that the clamping force can be more uniformly distributed on the surface of the oil tank, the risk of deformation or damage of the oil tank caused by overlarge local pressure is reduced, and meanwhile, a relatively large friction area is formed on the surface of the oil tank; and it can be guaranteed that the oil tank is not prone to sliding or falling off in the clamping and carrying process, and the feeding conveying efficiency is improved.

This invention relates to the field of gear shifting mechanism technology, specifically a two-axle gear shifting mechanism for new energy commercial vehicles, including a drive motor, a rack and pinion spindle, and a shift fork. The shift fork includes a sliding sleeve assembly sleeved on the outside of the rack and pinion spindle, and a clutch structure for applying a rated elastic preload is provided between the sliding sleeve assembly and the rack and pinion spindle. At least one end of the rack and pinion spindle is provided with a helical guide pair, which includes an input end and an output end. The input end is connected to the rack and pinion spindle, and the output end is connected to a dissipation component that applies frictional damping torque. This invention, by integrating a composite buffer system of radial clutch disengagement, helical guide friction dissipation, and aerodynamic damping, converts linear impact kinetic energy into rotational heat energy and fluid resistance work, achieving smooth dissipation of impact force, thereby effectively cutting off the transmission path of destructive loads and extending the overall mechanical life of the heavy-duty transmission system.

The invention relates to the technical field of solar photovoltaics, and discloses a photovoltaic module based on electrostatic adsorption deashing, which comprises a mounting box, a photovoltaic panel is fixedly mounted in the mounting box, fixing frames are fixedly mounted on the outer wall of the left side and the outer wall of the right side of the photovoltaic panel respectively, L-shaped mounting plates are fixedly mounted on the tops of the two fixing frames respectively, and the L-shaped mounting plates are fixedly mounted on the outer walls of the left side and the right side of the photovoltaic panel respectively. The device further comprises two electricity generation mechanisms, each electricity generation mechanism comprises an L-shaped movable plate installed on the L-shaped installation plate in a sliding mode, the L-shaped movable plates penetrate through the L-shaped installation plate, and L-shaped toothed plates are fixedly installed on the back faces of the L-shaped movable plates. As the length of the friction roller I is larger than that of the friction roller II, all the surfaces of the friction roller II are rubbed, the friction force is improved, the friction area is increased, static electricity generated by friction is stored by the friction roller II, and the situation that dust on the surface of a photovoltaic panel is accumulated due to insufficient static electricity when the friction roller II adsorbs dust on the surface of the photovoltaic panel is effectively avoided. Therefore, the dust cleaning effect is influenced.

The present invention discloses an underground self-protection endless rope continuous traction vehicle, which relates to the field of endless rope continuous traction vehicles, and includes a mobile base and a power system. One end of the mobile base is provided with an anti-slip device, and the lower end of the mobile base is provided with a brake device. The present invention can reduce the moving speed of the mobile base until the mobile base stops, and the setting of the brake device can increase the friction with the track, and strengthen the braking effect of the endless rope continuous traction vehicle. Secondly, it can clamp and fix the steel rope, and can brake the endless rope continuous traction vehicle, and can share the friction of four groups of No. 1 brake pads and two groups of No. 2 brake pads. At the same time, it can increase the friction area between the four groups of guide wheels and the steel rope, improve the friction of the two, and further strengthen the braking effect of the endless rope continuous traction vehicle, so that the mobile base is more stable when braking.

The invention relates to the technical field of camera lens coating, in particular to a coating device and a coating method for a mobile phone camera lens. Comprising a vacuum machine body, a base is arranged in the vacuum machine body, a workbench is arranged above the base, coating assemblies are arranged below the workbench and used for placing lenses for coating, I-shaped rails are arranged above the coating assemblies, friction assemblies are arranged on the surfaces of the I-shaped rails, and the friction assemblies move on the surfaces of plastic plates and conduct friction. An eccentric wheel pushes the end of a moving block in the rotating process, the moving block compresses an elastic piece to move on the inner wall of a column casing, and therefore the moving block drives a brush to do reciprocating motion on the surface of the plastic plate in the horizontal direction, the surface of the plastic plate is comprehensively rubbed, and the dust particles are adsorbed through the static electricity generated on the surface of the plastic plate. The friction area on the plastic plate is increased, the adsorption area is increased, and the adsorption efficiency on impurities and dust is improved, so that the coating superior product rate is improved, and the labor intensity of operators is reduced.

The invention discloses a spiral chain plate elevator and a using method thereof, and relates to the technical field of material conveying, the spiral chain plate elevator comprises a base, a rack fixedly installed above the base, a driving device fixedly installed at the corner of the lower portion of one side of the rack and a conveying device movably arranged on the inner side of the rack, the driving device drives the conveying device, and the driving device drives the conveying device to rotate. The conveying device is composed of a guide rail assembly and a plurality of chain plate assemblies, the guide rail assembly guides the chain plate assemblies to move along a preset path, and each chain plate assembly comprises a positioning seat arranged on the guide rail assembly, a guide seat fixedly arranged above the positioning seat, a guide plate arranged above the guide seat and a sleeve plate arranged above the guide plate in a sleeving mode; through the arrangement of the structure of the guide base, the guide plate, the arc-shaped sliding groove and the arc-shaped abutting shaft, the guide plate deflects on the guide base, materials make full contact with the non-slip mat, the friction area on the materials is increased, and the friction force of the elevator on the materials is increased.

The utility model relates to brake device technical field provides a floating type brake shoe and disc brake system, the floating type brake shoe includes: support plate has the first board face and the second board face opposite in its thickness direction, and the circumferential side of connecting first board face and second board face, recessed has a plurality of installation slot along circumferential side arrangement and with circumferential side intercommunication on the first board face, a plurality of friction blocks, a plurality of friction blocks with a plurality of installation slot one -to -one setting, friction block and support plate elastic connection and partly sink in the installation slot, form the heat dissipation channel between every adjacent two friction blocks. The floating type brake shoe can guarantee brake shoe overall thickness and support plate thickness, increase the wear thickness of friction block, increase the friction area of each friction block on the basis of guaranteeing enough heat dissipation channel, improve the brake capacity of friction block, satisfy the use demand under the high wear and forced braking working condition.

The utility model discloses an outdoor blind guiding water permeable brick, and relates to the technical field of water permeable bricks. The water permeable brick comprises a water permeable brick body, a square opening is formed in the middle of the upper end face of the water permeable brick body, a blind guiding plate is arranged in the square opening, a plurality of protruding blocks which are evenly distributed in an array mode are fixed to the upper surface of the blind guiding plate, sleeve openings are formed in the peripheral sides of the protruding blocks, and friction pads located in the sleeve openings are arranged on the peripheral sides of the protruding blocks. Diagonal inclined openings are formed in the upper surface of the water permeable brick body in front of and behind the blind guide plate, and lifting plates located in the middles of the diagonal inclined openings are fixed to the front surface and the rear surface of the blind guide plate. By using the diagonal inclined opening and the lifting plate, the blind guide plate is convenient to replace, meanwhile, the flow guide opening is communicated with the diagonal inclined opening, dirt is convenient to clean, the friction pad is installed on the protruding block, and the anti-skid capacity of the water permeable brick body is improved.

The utility model discloses a large-torque parking mechanism, which relates to the field of automobiles, aims to solve the problem of contradiction between the space utilization rate and the brake torque in the existing brake mode, and comprises a left brake friction ring, a conical brake disc, a right brake friction ring and a fixing frame, the rotating shaft is fixedly connected with the conical brake disc through a compression nut, a left crankset and a right crankset are slidably connected outside the fixing frame, a first elastic traction frame is connected between the left crankset and the right brake friction ring, and a second elastic traction frame is installed between the right crankset and the left brake friction ring. The conical brake disc has the advantages that through the design of double conical surfaces of the conical brake disc, the friction area is increased, the braking performance on a rotating shaft is improved, and the braking torque of equipment is improved.

The utility model belongs to mechanical manufacturing technical field discloses a kind of spanner for the installation and dismounting of by n for well logging blowout preventer, including spanner body, spanner body includes handle and the arc hook head connected with the one end of handle;The inner arc surface of arc hook head close to the one end of handle and the inner arc surface of arc hook head away from the one end of handle are both fixed with fixed clamping plate, the plane formed by fixed clamping plate and spanner body is vertically arranged, the side of fixed clamping plate away from arc hook head is the inner arc surface compatible with the outer arc surface of by n;Fixed clamping plate and the side of the two ends of spanner body perpendicular are equipped with symmetrical screw holes, and press-in type positioning plunger screw is screw-connected in screw hole.The utility model is applicable to the installation and dismounting of by n for well logging blowout preventer, can quickly, reliably complete the positioning between spanner and by n positioning hole, installation and dismounting, and enhance the clamping stability of spanner and by n, prevent from slipping.

The invention discloses a piezoelectric motor, a pan-tilt camera and an electronic product, the piezoelectric motor comprises a base, a piezoelectric assembly arranged on the base and a power output assembly in transmission connection with the piezoelectric assembly, a friction rod is arranged between the piezoelectric assembly and the power output assembly, and the friction rod is connected with the piezoelectric assembly. Motion generated by the piezoelectric assembly is transmitted to the power output assembly through the friction rod. According to the piezoelectric motor, the friction rod is driven to slide through the piezoelectric assembly, so that the friction rod drives the power output assembly to rotate, finally, the power output assembly outputs torque to achieve driving of the piezoelectric motor, and the piezoelectric motor is simple in structure, small in size and small in abrasion.

The utility model relates to the technical field of handheld terminals, and particularly discloses an anti-skid handheld terminal which comprises a terminal body. Mounting frames are arranged on the two sides of the terminal body, absorbent cotton is arranged on the mounting frames, a scanning window is formed in one side of the terminal body, a baffle is arranged on one side of the scanning window, lug plates are connected to the two sides of a protection plate, fixing blocks are connected to the two sides of the terminal body, and guide rods are connected to one sides of the fixing blocks. The guide rod penetrates through the lug plate, a through groove is formed in the protection plate, the through groove transversely penetrates through the protection plate, the through groove corresponds to the scanning window, one side of the protection plate is connected with a plurality of first elastic components, and one end of each first elastic component is connected with a limiting piece; two bearing platforms are arranged on one side of the scanning window, a clamping plate is arranged on one side of each bearing platform, the two ends of each clamping plate are connected with second elastic components, and one end of each second elastic component is connected with the corresponding bearing platform.

The utility model relates to the field of box-type splitters, and discloses a box-type splitter optical cable anti-drop mechanism comprising a splitter body, the surface of the splitter body is fixedly connected with an optical cable, the outer side of the optical cable is provided with an anti-drop mechanism, and the anti-drop mechanism comprises a fixed housing. The inner wall of the fixed shell is slidably connected with a pressing rod, the end part of the pressing rod is fixedly connected with a positioning ring, the outer wall of the pressing rod is provided with a positioning assembly, the fixed shell is also internally provided with a limiting assembly, and the outer wall of the fixed shell is fixedly connected to one side, close to an optical cable, of the splitter body. The fixing shell is arranged on the outer wall of the optical cable in a sleeving mode, the positioning ring is arranged in a semicircular shape, and the side, away from the pressing rod, of the positioning ring is attached to the outer wall of the optical cable. According to the utility model, the anti-falling mechanism is arranged, so that the risk that the optical cable falls off due to the outside is avoided, and the stability of the splitter body in use is improved.