31results about How to "Increase the maximum static friction" patented technology

The invention provides an automatic floor sweeping robot. The robot comprises a robot body, a dust suction inlet is formed in the bottom of the robot body, a walking wheel, a steering wheel and a dusting brush are arranged on the bottom of the robot body, and a driven roller is further arranged on the back at the rear of the walking wheel; the driven roller, the walking wheel and the steering wheel land together; a movable plate which can move up and down is arranged at the rear of the driven roller, and a duster cloth is horizontally fixed to the lower side of the movable plate; a drive mechanism which is coupled with the driven roller is connected to the upper side of the movable plate, and when the drive mechanism drives the driven roller to move forward, the movable plate lifts upward; the requirements for the surface roughness of the driven roller are as follows, when the robot body walks on the floor and the ground of floor tiles, sliding friction is kept between the driven roller and the ground; however, when the robot body walks on a carpet, rolling friction is kept between the driven roller and the ground. The robot can automatically adjust the floor sweeping function in a room paved with the carpet, and thus the damage on the carpet is avoided.

The invention discloses a slipping mechanism for a mirror surface driver of an automotive rearview mirror. The slipping mechanism comprises a rotation shaft (5), a straight-tooth wheel column (2) and an oblique-tooth disc (1) which sequentially sleeves the rotation shaft (5), as well as a limiting mechanism arranged on the rotation shaft (5) and used for limiting axial movement between the straight-tooth wheel column (2) and the oblique-tooth disc (1). The slipping mechanism is characterized in that a driving friction surface is arranged on the oblique-tooth disc (1); a driven friction surface matched with the driving friction surface is arranged on the straight-tooth wheel column (2); a friction force used for driving linkage of the straight-tooth wheel column (2) and the oblique-tooth disc (1) is formed between the driving friction surface and the driven friction surface; the maximum value of the friction force is smaller than the resistance generated by rotating the straight-tooth wheel column (2) to an extreme position. The slipping mechanism for the mirror surface driver of the automotive rearview mirror is simple in structure and can be used for effectively preventing the mirror surface from being broken by rotating out of travel when the mirror surface rotates to the extreme position.

The invention discloses a network transformer pin bending device which comprises a machine frame, a press rod arranged on the machine frame, a deformation press block fixed to the lower end of the press rod and a material table located under the deformation press block. The press rod can move in the axial direction, and a pin tightening device is further fixed to the press rod. The pin tightening device comprises a spring seat, a spring and a positioning press block, wherein the spring seat is fixed to the press rod, two ends of the spring are respectively and fixedly connected with the spring seat and the positioning press block, the axis of the spring is parallel to the axis of the press rod, and the lower-end position of the positioning press block is lower than the lower-end position of the deformation press block. Accommodating holes are formed in the positioning press block and deformation press block. The network transformer pin bending device is simple in structure, and the situation that the matching accuracy of pin holes are not high due to the fact that a separation distance between pins is changed through bending machining can be prevented.

The invention discloses a slipping mechanism for a mirror surface driver of an automotive rearview mirror. The slipping mechanism comprises a rotation shaft (5), a straight-tooth wheel column (2) and an oblique-tooth disc (1) which sequentially sleeves the rotation shaft (5), as well as a limiting mechanism arranged on the rotation shaft (5) and used for limiting axial movement between the straight-tooth wheel column (2) and the oblique-tooth disc (1). The slipping mechanism is characterized in that a driving friction surface is arranged on the oblique-tooth disc (1); a driven friction surface matched with the driving friction surface is arranged on the straight-tooth wheel column (2); a friction force used for driving linkage of the straight-tooth wheel column (2) and the oblique-tooth disc (1) is formed between the driving friction surface and the driven friction surface; the maximum value of the friction force is smaller than the resistance generated by rotating the straight-tooth wheel column (2) to an extreme position. The slipping mechanism for the mirror surface driver of the automotive rearview mirror is simple in structure and can be used for effectively preventing the mirror surface from being broken by rotating out of travel when the mirror surface rotates to the extreme position.

The invention relates to an axial compression slow descending device which is characterized by comprising a rack, a rope and an axial compression mechanism. The rope penetrates the axial compression mechanism, the axial compression mechanism comprises a rotary disc and a compression piece, the rotary disc is rotationally arranged on the rack, the peripheral side of the bottom of the rotary disc extends out of a supporting table, the rope surrounds the periphery of the rotary disc in the peripheral direction of the rotary disc and is arranged on the supporting table, the compression piece comprises a compression shell and a compression roller, the compression roller is rotationally arranged on the compression shell, the compression shell can be fixed in the axial direction of the rotary disc, and the compression roller presses the rope to be in contact with the supporting table in the axial direction of the rotary disc; and when the rotary disc rolls on the rope, the rope drives the compression roller to rotate. The axial compression slow descending device has the beneficial effects of being simple in structure, small in abrasion, less in generated heat, safe, reliable and long in service life.

The invention provides an automatic floor sweeping robot. The robot comprises a robot body, a dust suction inlet is formed in the bottom of the robot body, a walking wheel, a steering wheel and a dusting brush are arranged on the bottom of the robot body, and a driven roller is further arranged on the back at the rear of the walking wheel; the driven roller, the walking wheel and the steering wheel land together; a movable plate which can move up and down is arranged at the rear of the driven roller, and a duster cloth is horizontally fixed to the lower side of the movable plate; a drive mechanism which is coupled with the driven roller is connected to the upper side of the movable plate, and when the drive mechanism drives the driven roller to move forward, the movable plate lifts upward; the requirements for the surface roughness of the driven roller are as follows, when the robot body walks on the floor and the ground of floor tiles, sliding friction is kept between the driven roller and the ground; however, when the robot body walks on a carpet, rolling friction is kept between the driven roller and the ground. The robot can automatically adjust the floor sweeping function in a room paved with the carpet, and thus the damage on the carpet is avoided.

The invention discloses an anti-skid device for a climbing-free device for a wind turbine generator and a design method thereof. The anti-skid device for the climbing-free device for the wind turbinegenerator comprises a power box, driving wheels, driven wheels, a steel rope and a pre-tightening spring; the driving wheels and the driven wheels are installed in the power box; at least two drivingwheels are arranged; the steel rope passes through the power box and sequentially bypasses the driving wheels and the driven wheels; the power box is internally provided with a guide groove; at leasttwo driven wheels are floating wheels; a wheel shaft of each floating wheel is installed inside the guide groove; and the wheel shafts of the floating wheels are connected through the pre-tightening spring. According to the anti-skid device disclosed by the invention, a plurality of small-diameter driving wheels are used to replace a single large-diameter driving wheel in the existing design; thecontact length between the driving wheels and the steel rope is increased; reliable running of a transmission system is guaranteed; the transmission capability of the driving wheels is also improved;and the skid resistance of the climbing-free device under extremely severe working conditions is improved.

The invention discloses a pair of delivery forceps for the obstetrics department and a preparation method of a coating layer for the delivery forceps for the obstetrics department. The pair of delivery forceps for the obstetrics department comprises a forceps body, forceps blades arranged at the front end of the forceps body and used for including a fetal head, and forceps handles arranged at therear end of the forceps body, and the inner side surfaces of the forceps blade are provided with coating layers prepared from polydimethylsiloxane / hydrophilic silica polymer nanocomposite material, wherein the coating layer is prepared through solution preparation, internal mold processing and compression molding. The pair of delivery forceps for the obstetrics department is used for solving the problems of fetal head slippery caused by poor control over delivery forceps clamping force or too large tensile force, reduction of fetal head compression injury due to too large clamping force and the like, and the pair of delivery forceps for the obstetrics department has the advantages of moderate compliance, simple structure, convenient use, safety, sanitation and the like.

The invention discloses a mechanism for bending the pin width and enabling the bending amount to be controlled conveniently. The mechanism comprises a rack, a pressing rod, a deformation pressing block and a material table, and further comprises a deformation control mechanism, and a pin fastening device is fixedly arranged on the pressing rod. The pin fastening device comprises a spring seat, a spring and a locating pressing block, the two ends of the spring are fixedly connected with the spring seat and the locating pressing block respectively, the axis of the spring is parallel to the axis of the pressing rod, and the lower end of the locating pressing block is lower than the lower end of the deformation pressing block. Containing holes are formed in the locating pressing block and the deformation pressing block respectively. A groove adjusting portion is arranged on the material table, and a groove is formed between the groove adjusting portion and the material table. The deformation control mechanism comprises an ejector rod bolt and a distance-fixed nut. The mechanism is simple in structure, the situation that the distance between pins is changed due to bending machining, and finally matching precision of the pins and pin holes is not high can be avoided, the mechanism is suitable for expanding or reducing pin bending of the width between the pins, and the deformation of the pins is controlled conveniently.

The invention discloses an axial tightly-pressing mechanism. The axial tightly-pressing mechanism comprises a rotating disc and a tightly-pressing component. A support table extends out of the circumferential side of the bottom of the rotating disc. A rope surrounds the periphery of the rotating disc in the circumferential direction of the rotating disc and is arranged on the support table. The tightly-pressing component comprises a pressing shell and pressing rolling wheels. The pressing rolling wheels are rotatably arranged on the pressing shell. The pressing shell can be fixed in the axialdirection of the rotating disc. The pressing rolling wheels press the rope in the axial direction of the rotating disc and enable the rope to be in contact with the support table. When the rotating disc advances on the rope, the rope drives the pressing rolling wheels to rotate. A lifting device comprises a rack, a rope, a power mechanism and the axial tightly-pressing mechanism. The axial tightly-pressing mechanism has the advantages of being simple in structure, small in abrasion, low in heat generation capacity, long in service life and reliable in pressing. The lifting device has the advantages of being simple in structure, safe, reliable and long in service life.

The invention discloses a pin bending device suitable for expanding or narrowing the width between pins. The pin bending device comprises a rack, a press rod, a deformation press block fixed at the lower end of the press rod, and a material table positioned under the deformation press block, wherein the press rod can move along the axial direction; a pin locking device is also fixed on the press rod; the pin locking device comprises a spring seat, a spring and a locating press block; the spring seat is fixed on the press rod; the two ends of the spring are respectively and fixedly connected with the spring seat and the locating press block; the axis of the spring is parallel to that of the press rod; the position of the lower end of the locating press block is lower than that of the lower end of the deformation press block; the locating press block and the deformation press block are respectively provided with a containing hole; the material table is also provided with a groove adjusting part; a groove is formed between the groove adjusting part and the material table. The pin bending device is simple in structure; after the pin bending device is used, the condition that the matching accuracy between the pins and pin holes are not high due to the change of gaps between the pins caused by bending processing can be avoided; the pin bending device is suitable for expanding or narrowing the width between the pins.

The invention discloses a hardware door stopper, which relates to the technical field of hardware and comprises a base. A telescopic slot is provided on the top of the base. One side of the telescopic slot is rotatably connected to a swing plate. The spring is fixedly connected with the oscillating plate, and the top of the oscillating plate is provided with a reset groove, and the inner bottom of the reset groove is slidably connected with an arc-shaped convex plate, and the end of the arc-shaped convex plate extending to the outside of the reset groove is rotatably connected with an arc An arc-shaped concave plate, the end of the arc-shaped concave plate away from the arc-shaped convex plate is rotatably connected with the swing plate. The hardware door stopper can facilitate the installation and use of the door stopper, reduce the installation cost of the door stopper, facilitate the popularization and use of the door stopper, increase the selectivity when replacing the door stopper, reduce the cost of door stopper replacement and maintenance, and reduce the cost of the door stopper. Collisions between the door stoppers increase the service life of the door stoppers, and at the same time have multiple functions, which can effectively buffer the force of the door stoppers when they collide.

The invention discloses a support and hanger middle supporting arm connecting device. The support and hanger middle supporting arm connecting device comprises a connecting side wall and a middle supporting arm and further comprises a second connecting part, the second connecting part comprises a third main plate, third side plates symmetrically connected to the two sides of the third main plate, afourth main plate and fourth side plates symmetrically connected to the two sides of the fourth main plate, the third main plate is connected with the fourth main plate, the third side plates are perpendicular to the third main plate, a first mounting space is formed between the third main plate and the third side plates on the two sides, the fourth side plates are perpendicular to the fourth main plate, a second mounting space is formed between the fourth main plate and the fourth side plates on the two sides, the connecting side wall is connected into the first mounting space, and the middle supporting arm is connected into the second mounting space. According to the support and hanger middle supporting arm connecting device, the stability of the joint between the middle supporting armand the connecting side wall is guaranteed, and fasteners penetrate through the third side plates to be connected with the connecting side wall and penetrate through the fourth side plates to be connected with the middle supporting arm, so that the strength of the joint is guaranteed.

The invention discloses a network transformer pin bending mechanism facilitating control of deformation. The pin bending mechanism comprises a machine frame, a pressure rod arranged on the machine frame, a deformation pressing block fixed to the lower end of the pressure rod, and a material table located on the lower side of the deformation pressing block, the pressure rod can axially move. The pin bending mechanism further comprises a deformation control mechanism and is further fixedly provided with a pin fastening device, the pin fastening device comprises a spring base, a spring and a positioning pressing block, the spring base is fixed to the pressure rod, the two ends of the spring are fixedly connected with the spring base and the positioning pressing block respectively, the axis of the spring is parallel with that of the pressure rod, the lower end of the positioning pressing block is lower than the lower end of the deformation pressing block, the positioning pressing block and the deformation pressing block are respectively provided with a containing hole, and the deformation control mechanism comprises a push rod bolt and a spacing screw cap. The pin bending mechanism is simple in structure, the situation that matching precision of pins and pin holes is not high due to the fact that the distance between the pins is changed after bending machining can be avoided and the bending degree of the pins can be conveniently controlled.

The invention discloses a mechanism for bending the pin width and enabling the bending amount to be controlled conveniently. The mechanism comprises a rack, a pressing rod, a deformation pressing block and a material table, and further comprises a deformation control mechanism, and a pin fastening device is fixedly arranged on the pressing rod. The pin fastening device comprises a spring seat, a spring and a locating pressing block, the two ends of the spring are fixedly connected with the spring seat and the locating pressing block respectively, the axis of the spring is parallel to the axis of the pressing rod, and the lower end of the locating pressing block is lower than the lower end of the deformation pressing block. Containing holes are formed in the locating pressing block and the deformation pressing block respectively. A groove adjusting portion is arranged on the material table, and a groove is formed between the groove adjusting portion and the material table. The deformation control mechanism comprises an ejector rod bolt and a distance-fixed nut. The mechanism is simple in structure, the situation that the distance between pins is changed due to bending machining, and finally matching precision of the pins and pin holes is not high can be avoided, the mechanism is suitable for expanding or reducing pin bending of the width between the pins, and the deformation of the pins is controlled conveniently.

The invention discloses a temperature control type anchor rod. The temperature control type anchor rod comprises a rod body, a hollow cavity is formed in the rod body, a cone is arranged on the bottomsurface of the rod body, supports are arranged in the hollow cavity, wherein each support comprises an upper circular ring body, a lower circular ring body and a connecting column for connecting thecorresponding upper circular ring body to the corresponding lower circular ring body, the axis of each lower circular ring body and the axis of the corresponding upper circular ring body are collinear, the diameter of each lower circular ring body is larger than or equal to the diameter of the corresponding upper circular ring body, bimetallic strips are connected between the edge of each upper circular ring body and the edge of the corresponding lower circular ring body, limiting holes are formed in the outer wall of the rod body, sliding rails are arranged at the bottoms of the limiting holes, limiting blocks are slidably connected to the sliding rails, the middle portions of the bimetallic strips are connected with the limiting blocks, when the bimetallic strips are in normal temperature states, the middle portions of the bimetallic strips protrude in the axis directions away from the upper circular ring bodies, and when the bimetallic strips are in heating states, the middle portions of the bimetallic strips retract in the axis directions close to the upper circular ring bodies. According to the temperature control type anchor rod, the problems that a traditional anchor rod isnot high enough in pulling resistance and inconvenient to use repeatedly are solved.

The invention discloses a CNC machine tool with automatic tool change for graphite processing, and relates to the technical field of automatic tool change CNC machine tools; in order to realize the function of automatic tool change; it specifically includes an automatic tool change mechanism and a multi-directional mobile support frame, the automatic tool change The mechanism includes a mounting frame and a motor, the motor is fixed on the outer wall of one side of the mounting frame, the output end of the motor is connected to the turret, and the outer walls on both sides of the turret are equipped with receiving seats evenly distributed around the circumference, and the receiving seats contain knives. The tool is equipped with a tool fixing cylinder, the outer wall of one side of the tool fixing cylinder is fixed with a mounting rod, and the peripheral outer wall of the tool fixing cylinder is movably installed with a fixing pin through a first spring, and the fixing pin is slidably connected with the tool fixing cylinder. The present invention realizes the fixing of the cutter by setting a cutter fixing cylinder, a fixing pin, a guide rod and a cutter with a pin hole. This method can realize the function of automatic cutter change, effectively saves manpower, and improves practicability.

The invention relates to the field of foam production, in particular to a self-positioning multilayer laminating machine. The self-positioning multilayer laminating machine comprises a machine frame,a motor, a negative pressure mechanism, a conveying pair roller and a positioning channel; the conveying pair roller comprises an upper roller and a lower roller, and the positioning channel comprisesa horizontal section and an inclined section; and the horizontal section and the inclined section each comprise a first side and a second side, an air inlet and a cleaning block are arranged on the inclined section, the negative pressure mechanism comprises a blowing cylinder and a circular column cam, a piston rod of the blowing cylinder can slide along the contour curve of the side wall of thecircular column cam, an air inlet one-way valve and an air outlet one-way valve are fixed on the side wall of the blowing cylinder, the air inlet one-way valve communicates with an air inlet, a negative pressure cavity is formed in the upper roller or the lower roller, and a negative pressure hole is formed in the side wall of the negative pressure cavity. The self-positioning multilayer laminating machine can make the paper be flush with the foam cotton.