16results about How to "Increase positive pressure" patented technology

The utility model discloses a split type generator, which comprises a rotor, a stator and an end cover, the rotor is fixed on a rotating shaft through a flange and an expansion sleeve, the flange comprises a flange edge, the rotor is at least divided into three sections, the stator and the end cover are respectively at least divided into two sections, the flange and the expansion sleeve are respectively at least divided into two sections, and the expansion sleeve is fixed on the rotating shaft. A gap is formed between the inner surface of the expansion sleeve and the rotating shaft, the outer surface of the expansion sleeve is in contact with the inner surface of the flange, conical surfaces matched with each other are arranged at the contact parts of the expansion sleeve and the flange, and the generator tightens the expansion sleeve by connecting the split flanges, so that the rotating shaft is clasped. The flanges and the expansion sleeve are combined through conical surface nesting matching contact, tightening operation is conducted on the expansion sleeve through the connecting and fastening effect between the split flanges, and the purpose that the expansion sleeve tightly holds the rotating shaft is achieved. The contact area and the contact surface pressure of the expansion sleeve and the flange are large, the positive pressure of friction force generated on the contact surface is large, and the expansion sleeve and the rotating shaft can be clamped more tightly.

The invention relates to the technical field of pipeline hoisting, in particular to a heat supply pipeline auxiliary construction device for community reconstruction. Comprising a connecting beam; the number of the stress plates is two, the two stress plates are fixedly connected to the two ends of the connecting beam respectively, the stress plates are fixedly connected with first arc-shaped plates, the two ends of the first arc-shaped plates are rotationally connected with rotating shafts respectively, the rotating shafts of the first arc-shaped plates are fixedly connected with rotating claws, and the two rotating shafts of the first arc-shaped plates are fixedly connected with first gears; and the number of the first arc-shaped racks is two, and the two first arc-shaped racks are slidably connected to the adjacent first arc-shaped plates correspondingly. According to the heat supply pipeline hoisting device, a heat supply pipeline is clamped and hoisted through the rotating claw, the heat supply pipeline does not need to be manually moved, the pipeline can be clamped through the rotating claw and the first arc-shaped plate, the step of manually fixing the heat supply pipeline is omitted, the whole hoisting process is simpler, and the labor intensity of workers is reduced.

The utility model relates to an anti-abrupt change circuit, in particular to an anti-abrupt change circuit for reading a pressure sensor value by a module, which comprises a pressure sensor and an MCU (Microprogrammed Control Unit) chip for reading an AD (Analog to Digital) value of the pressure sensor, a resistor R1 and a resistor R2 are also arranged; the resistor R1 and the resistor R2 form a voltage division circuit to reduce the voltage output by the pressure sensor; a current-limiting resistor R3 is connected in series before being connected to an AD detection pin of the chip; a capacitor C1 and a capacitor C2 are arranged; two diodes D1 are arranged between the current limiting resistor R3 and the MCU chip; the problem of power supply of the MCU chip can be solved, and an anti-abrupt change function is realized.

The utility model relates to the technical field of steel bar machining, in particular to a convenient steel bar machining auxiliary structure which comprises a base, a supporting seat is arranged on the left side of the top end wall of the base, a driving shaft is rotationally connected to the right side wall of the supporting seat through a first bearing, and a conveying wheel is connected to the right side of the outer wall of the driving shaft in an interference fit mode. A connecting base is arranged on the right side of the top end wall of the base, and a steel bar lifting and pressing mechanism is arranged on the top end wall of the connecting base. The adjustable pressing wheel structure is arranged above the steel bar, the motor is used for driving the lead screw to drive the pressing wheel to move up and down, the steel bar is stably pressed on the conveying wheel, and compared with the prior art that the steel bar makes contact with an idler wheel only through the dead weight of the steel bar, the design obviously increases positive pressure between the steel bar and the conveying wheel, and then friction force is improved. The slipping phenomenon caused by factors such as small diameter, light weight, smooth surface or conveying speed change of the steel bar is effectively avoided, and the stable and reliable conveying process of the steel bar is ensured.

The present invention discloses a jet hydrodynamic magnetorheological polishing device and method, which mainly include: a base and a workpiece dynamic structure. The workpiece dynamic structure refers to the workpiece under the action of the workpiece rotation mechanism to realize the workpiece dynamic pressure cover around the rotating main axis, the dynamic pressure cover is provided with a concave portion at the installation position of the workpiece, which is used to control the size and distribution of the jet hydrodynamic fluid dynamic pressure, and form fluid dynamic pressure under the action of dynamic magnetic field and fluid extrusion, effectively enhancing the shear force and positive pressure acting on the workpiece surface. This process method is suitable for the flattening and ultra-smooth surface polishing of optical elements, electronic and microelectronic substrates.

The invention belongs to the field of cabling machines, and particularly relates to a full-automatic cable cabling machine with an active deviation rectifying function, which comprises a central pay-off support, two pay-off rollers I are mounted in the middle of the central pay-off support, a wire outlet frame is fixedly connected to the end part of the central pay-off support, a central arm is fixedly connected to the end part of the wire outlet frame, and two pay-off rollers II are mounted in the central pay-off support. A driving box used for driving the wire outlet frame to rotate is installed on the outer side of the end of the wire outlet frame, a first transmission disc and a second transmission disc are fixedly connected to the outer side of the center arm, and a plurality of side disc pay-off supports are installed between the first transmission disc and the second transmission disc. Friction force needing to be overcome by rotation of the first pay-off reel and the second pay-off reel can be changed in real time, in the cabling process, the straightening and deformation states of raw material wires are always kept, the quality of the head and the tail of a formed cable are kept the same, and meanwhile the problems of bloating, dislocation, deformation and the like after the cable is formed are effectively solved.

The utility model discloses a kind of electric connectors, it is related to connector technical field, wherein, electric connector includes: male end, including first shell;Female end, including second shell;And first electric connection component, including spring and tubular conductor, one of spring and tubular conductor is located in the inside of first shell, the other is located in the inside of second shell;Wherein, first shell is inserted into second shell, so that spring and tubular conductor abutment realizes electric connection, and spring produces radial force applied to tubular conductor along tubular conductor.The technical scheme provided by the utility model provides a kind of electric connector, and male end and female end are closely connected, not easy to loosen.

The invention relates to the technical field of electric power overhaul auxiliary equipment, and particularly discloses a remotely-controllable electric power overhaul lighting device which comprises a pole climbing device composed of at least two pole climbing robots and a connecting piece, a lighting device detachably installed on the connecting piece and a remote control terminal. The pole-climbing robot is provided with a driving wheel, a control module and a locking mechanism, and the lighting device comprises a lighting lamp with a battery and is provided with a pluggable power supply connecting wire which can be selectively connected with the battery with the battery, a battery of the pole-climbing robot or an external power supply. Remote control lifting and flexible deployment of the lighting device are achieved, the power supply mode is independent and switchable, and the safety, adaptability and cruising ability of high-altitude overhaul operation are remarkably improved.

This invention relates to the field of power transmission line operations and provides a power grid sealing and traction device. The power grid sealing and traction device includes: a frame assembly with an opening for inserting a conductor; a traction assembly including a plurality of first rollers and a first drive device; the first rollers and the first drive device are disposed within the frame assembly, located at the top of the opening, the first rollers supporting the conductor and rolling relative to it, and the first drive device driving the first rollers to rotate; and a top-line assembly including a top rod, a second roller, and a second drive device; the second drive device driving the second roller to press against the conductor. The traction assembly rolls and pulls above the conductor, while the top-line assembly presses against the conductor from below. This dual-action structure of upper traction and lower pressing improves the smoothness of the traction action.

The invention belongs to the technical field of cantilever type heading machines, and particularly relates to a general slope roadway self-walking auxiliary device and a ramp heading machine. The self-walking auxiliary device is used for being installed on the heading machine, and the self-walking auxiliary device applies downward pressure to the heading machine with a roadway top plate as counter-force support. The self-walking auxiliary device comprises a folding and unfolding mechanism and a sliding mechanism, one end of the folding and unfolding mechanism is connected with the heading machine, the other end of the folding and unfolding mechanism is connected with the sliding mechanism, the folding and unfolding mechanism can lift the sliding mechanism to make contact with a roadway top plate or fold towards the heading machine, and the sliding mechanism can move and slide along with the heading machine. Through the self-walking auxiliary device, the gradeability of the heading machine is improved, and the heading machine can reliably and autonomously walk and excavate in a roadway with a general gradient (less than 25 degrees) under the condition of no external traction.

The utility model discloses a fluid injection system and dispensing equipment, the fluid injection system comprises a valve shell, an injection piece, a locking cover and an elastic piece, and the valve shell is provided with a mounting hole; the spraying piece is installed in the installation hole in a sliding mode. The locking cover is connected to the valve shell in a threaded mode and presses the injection piece so as to prevent the injection piece from disengaging from the valve shell. The elastic piece is arranged in the valve shell and located on one side of the jetting piece, and the elastic piece is used for providing elastic force enabling the jetting piece to extrude the locking cover. According to the fluid injection system, the injection piece is installed in the installation hole in the sliding mode, the elastic piece is arranged to apply the elastic force to the injection piece to extrude the locking cover, and therefore the axial pressure between the locking cover and the valve shell can be improved, the positive pressure and the static friction force between the threads in threaded connection with the locking cover and the valve shell are improved, and the fluid injection efficiency is improved. The risk that the locking cover rotates and loosens relative to the valve shell due to impact of the opening and closing piece is reduced, the fluid injection system can adapt to long-time continuous operation, and the operation efficiency is improved.

This invention relates to the field of emergency repair technology for piping in dams, and discloses a flood control device for rapidly sealing piping in dams. The device includes a filter screen and a rubber plate positioned at opposite ends. Both screens have thickened sides forming a "U"-shaped rubber section with an internal support frame, which, together with the rubber frame, forms a chamber with an open top. The chamber is filled with a reverse-filtration counterweight medium. When high-pressure water impacts the rubber plate, fine particles enter the chamber, forming a dynamically graded sedimentation layer to release water pressure and prevent erosion of the dam foundation. The core of the device lies in the support frame being configured as a self-locking linkage mechanism based on mechanical feedback. When external water pressure pushes the rubber plate to cause a lateral overturning tendency, the support frame can mechanically force the bottom plate to press against the dam ground, increasing the positive pressure and frictional resistance between the device and the ground, and combining this with the passive resistance of the fixed frame to balance the overturning moment. This invention can quickly respond to emergencies, resist water flow impact, adapt to complex terrain, and achieve reliable reverse-filtration sealing.

The utility model relates to the technical field of fishing reels, in particular to a friction system structure of a fishing reel, which comprises a fishing reel body, a spindle is rotatably mounted on the fishing reel body, one end of the spindle extends to the rear end of the fishing reel body, an adjusting knob is fixedly mounted at the end of the spindle, and a handle is fixedly mounted on the side edge of the adjusting knob. The other end of the main shaft extends to the front end of the fishing reel body and is rotationally provided with a winding wheel body through a second bearing, the two ends of the winding wheel body are provided with installation grooves correspondingly, friction pads are installed in the installation grooves, and a small gear is arranged on the side, close to the fishing reel body, of the winding wheel body. A winding wheel shaft sleeve is arranged on the other side of the winding wheel body; the winding wheel shaft sleeve and the pinion are fixedly mounted on the main shaft; the friction force is larger, the friction pad is more durable, the friction force is more uniform, and the service life is prolonged.

The application aims to provide a connection structure of a blood flow channel and a sleeve with high bonding reliability, which comprises a blood flow channel and a sleeve. The blood flow channel comprises a round tube, and a connecting tube section is extended from the end of the round tube near one side of the sleeve. The outer wall of the connecting tube section is in a shape of a tapered column with a large middle diameter and small diameters on both sides. The maximum outer diameter of the connecting tube section is smaller than the outer diameter of the round tube, and the sleeve is sleeved on the outer periphery of the connecting tube section and is bonded by glue. The outer wall of the connecting tube section is in a shape of a tapered column with a large middle diameter and small diameters on both sides, which increases the contact area of the sleeve and the connecting tube section and increases the pulling force between them. When the sleeve is stretched and deformed, the contact surface is subjected to normal pressure and glue shear force, and the normal pressure increases with the increase of the deformation amount of the sleeve at this position, which provides a guarantee for the reliable connection between the sleeve and the blood flow channel.

The invention discloses a method and system for shortening the braking distance of a vehicle and the vehicle, and belongs to the technical field of vehicle braking. The method comprises the following steps that scene information in front of the vehicle is obtained; acquiring a current vehicle speed; according to the scene information and the current vehicle speed, whether a critical collision threshold value is reached or not is judged, if yes, a servo motor at a vehicle chassis is controlled to move up and down, a distance reducing plate is driven by the servo motor to ascend and descend, and the distance reducing plate makes contact with the ground. A new braking force path is added for vehicle braking, the speed of the vehicle is effectively reduced, the braking distance is remarkably shortened, and the capacity of avoiding collision under the emergency condition is improved.

The utility model provides a floating type driving wheel assembly which comprises a driving seat, a driving device installed on the driving seat and a bottom plate connected with a frame. A floating mechanism is mounted between the bottom plate and the driving seat; when the driving device floats up and down, the bottom plate synchronously follows up through the floating mechanism and is subjected to acting force in the up-down direction, the utility model further provides an AGV forklift which comprises a frame and a driving assembly, and the floating type driving wheel assembly is installed in the driving assembly. The problems that a force increasing mechanism is additionally arranged to balance the road holding force of a single steering wheel, pressure of back space layout is caused, and meanwhile energy consumption is large are solved.