33results about How to "Smooth and efficient rotation" patented technology

A self-suturing anchor device includes rotatable ring adapted to automatically deploy sutures to secure a catheter. The rotatable ring is utilized in connection with a ratchet mechanism which allows movement of the rotatable ring in a first direction while preventing movement of the rotatable ring in the opposite direction. The rotatable ring is also utilized in connection with a bearing member to facilitate smooth and efficient rotation of the rotatable ring. An extension saddle is utilized to provide a desired amount of displacement between suture securement points to minimize pivotal movement of the catheter. The rotatable ring is wider than its height to minimize kinking of the catheter tube and to relieve pressure when pressed between the patient and a support surface. In another embodiment, a plurality of scallops or other gripping members are utilized to facilitate easy gripping and rotation of the rotatable ring.

A screwdriver bit structure having auxiliary positioning function includes a screwdriver bit of which one end is a circular cylinder and having a driving portion that is any one of a slotted type, a cross type and a polygon type. Another end of the circular cylinder is a fitting portion that is buckled to the screwdriver bar. The features of the invention are that the circular cylinder has a concave ring groove near the front of the driving portion. An auxiliary sheath is a long tube body that has a tube hole. The internal diameter of the tube hole is slightly larger than the periphery of the circular cylinder. A protruding ring is disposed to an internal wall of the tube hole. Accordingly, the tube hole of the auxiliary sheath can cover the periphery of the circular cylinder to allow the screwdriver bit to achieve the absolute positioning.

The invention discloses a textile fabric conveying device, and belongs to the field of textile processing mechanical equipment. According to the textile fabric conveying device, a fabric unwinding mechanism and a fabric conveying mechanism are arranged on the two sides of a fabric conveying support correspondingly, a lifting fabric guide roller is horizontally arranged on the fabric conveying support between the fabric unwinding mechanism and the fabric conveying mechanism, the lifting fabric guide roller is horizontally and rotationally connected to a reciprocating lifting guide block, a fabric unwinding roller is horizontally, coaxially and fixedly arranged in the middle of a fabric unwinding rotary plate, a pressing plate damping swing rod is arranged on a fabric conveying support on the lower side of the fabric unwinding rotary plate, the two sides of a fabric non-return support are horizontally and rotationally connected with a front material guiding rotary roller and a rear material guiding rotary roller correspondingly, and a lifting material pressing rotary roller is arranged on the lower side of a fabric conveying rotary roller. The textile fabric conveying device is reasonable in structural design, textile fabrics can be efficiently, smoothly, sequentially and intermittently conveyed, stable, accurate and continuous sectional conveying of textile fabrics is achieved,the automation degree of textile fabric conveying and processing is improved, and the requirements of production and use are met.

An air-bleed gas turbine includes a compressor; a combustor; a turbine; and an air bleed portion by which compressed air, which is supplied from the compressor to a circular space that surrounds the combustor, is partially supplied to a device outside the air-bleed gas turbine. The air bleed portion includes an air bleed passage that is communicated with an air bleed port which is connected to the device outside the air-bleed gas turbine, and a communication passage that is communicated with the circular space. The air bleed passage is communicated with the circular space through the communication passage. The flow passage area of the communication passage is increased as the distance from the air bleed port increases in the circumferential direction of the circular space.

The invention provides a variable-position end sealing mechanism for a quadrangular packaging bag and belongs to the field of food packaging machinery technique. The mechanism comprises an end-sealing fixing mechanism, an end-sealing rotary mechanism, an end-sealing cutter-sealing mechanism and a machine frame, wherein the end-sealing fixing mechanism is used for fixing an end-sealing mechanism on the machine frame of a machine, and a pin shaft of the end-sealing fixing mechanism is the base point for rotary position variation of the end-sealing cutter-sealing mechanism; the end-sealing rotary mechanism is a driving link for rotary position variation movement of the end-sealing cutter-sealing mechanism and supplies power to the rotary position variation movement of the whole end-sealing cutter-sealing mechanism; and the end-sealing cutter-sealing mechanism is used for sealing and cutting off the quadrangular packaging bag. The end sealing mechanism of the invention can be used as a horizontal sealing device for a food packaging machine and can continuously seal the ladder-shaped packaging bag of which both ends are not parallel and also continuously seal the rectangular or parallelogrammic packaging bag of which both ends are parallel, so that the packaging functions of the fully automatic food packaging machine are greatly increased.

The invention discloses a metal pouring device which comprises a machine table. A horizontal beam component comprises a horizontal beam, a first hydraulic cylinder and a transmission mechanism. The first hydraulic cylinder is arranged on the side wall of a supporting column and drives the horizontal beam to rotate through the transmission mechanism. A left mould component comprises a left arm, a left template and a second hydraulic cylinder which is arranged on the left arm and is used for pushing the left template to move. A right mould component comprises a right arm, a right template and a third hydraulic cylinder. The right template is fixedly connected to a piston rod of the third hydraulic cylinder which is arranged on the right arm and is used for pushing the right template to move. The two ends of a mould set rotating hydraulic cylinder are connected with the left arm of the left mould component and the right arm of the right mould component respectively. The mould set rotating hydraulic cylinder moves in a stretching mode to drive the left arm and the right arm to rotate. According to the scheme, the left mould component and the right mould component can be separated easily, and accordingly separating of a metal product and a mould cannot damage the surface of the metal product.

The invention discloses a portable drilling tool hydraulic clamp. The portable drilling tool hydraulic clamp comprises a lower clamp body, an upper clamp body and an upper plate, wherein the lower clamp body is provided with a lower clamp body bracket, back inclined jaw plates, a wedge-shaped plate, a lower clamp body clamping oil cylinder, a synchronous pull rod and a synchronous pull plate; thelower clamp body clamping oil cylinder drives the wedge-shaped plate to move through the synchronous pull plate and the synchronous pull rod, so that the clamping action of the two back inclined jaw plates on a drilling tool is realized; the upper clamp body is provided with an upper clamp body bracket, an inner groove, a slope plate, jaw plates, a notch gear and a motor gear; a gear sliding plateis fixed on the upper plate; a hydraulic motor drives the notch gear to rotate through the motor gear, so that the slope plate of the jaw plates in the inner groove is realized, and the rotation of the upper clamp body is realized while the drilling tool is tightly held. According to the portable drilling tool hydraulic clamp, the lower clamp body is large in drilling tool clamping torque and isnot easy to slip; the upper clamp body adopts a hydraulic holding clamping mode, so that the clamping torque is large, the fixing performance is good, and the upper clamp body is guaranteed to rotatestably and effectively; meanwhile, the portable drilling tool hydraulic clamp is practical, durable and simple and convenient to operate, and the manufacturing and maintenance cost is reduced.

The invention relates to the technical field of street lamp mounting equipment, and discloses a rapid mounting auxiliary device for a street lamp. The rapid mounting auxiliary device aims to solve theproblems that an existing street lamp mounting auxiliary device cannot independently mount a street lamp post and only can be effectively used under the assistance of hoisting equipment. The rapid mounting auxiliary device comprises a U-shaped bottom frame, moving wheels are installed at the two ends of the bottom and the two sides of the middle of the bottom of the U-shaped bottom frame, a bottom plate is fixedly installed at the top of the U-shaped bottom frame, bearing tables are installed between the two sides of the bottom plate and the two sides of the U-shaped bottom frame, fixing columns are fixedly installed on the two sides of the top of the bottom plate, rotating arms are installed at the tops of the opposite sides of the two fixing columns, and U-shaped connecting moving plates are installed on the opposite sides of the two rotating arms. The rapid mounting auxiliary device for the street lamp can effectively fix the street lamp pole placed on the ground, can rotate the street lamp pole and keep the street lamp pole in a vertical state, and meanwhile can stably move, adjust and install the fixed street lamp pole.

The invention discloses an eccentric shaft turning clamp device and a machining method. The device comprises a base, a clamp body, a positioning pin, a screw, a spring collet, a limiting pin and a nutsleeve. The spring collet holds an eccentric shaft through a tensioning groove, the limiting pin and the groove are matched for limiting the rotation degree of freedom of the eccentric shaft, thus, stable and efficient rotation of the eccentric shaft in the turning process is ensured, and the product yield is increased, so that the eccentric shaft is clamped simply and efficiently in the turningmachining process, the device is simple in structure and low in cost, further, after first-stage eccentric machining is completed, the spring collet and the clamp body of the eccentric shaft blank aremounted, the clamp body structure does not need to be replaced, and multi-stage eccentric machining is achieved conveniently and quickly. Furthermore, if the shaft diameter of the to-be-machined eccentric shaft changes, only the size of the spring collet needs to be replaced, the whole set of clamp device does not need to be replaced, and convenience and fastness are achieved. Meanwhile, machining of a variety of eccentric shaft parts can be achieved by changing the eccentric distance on the base.

The invention discloses a round metal tube conveying and overturning device and belongs to the field of pipe fitting conveying machinery equipment. Round tube falling guide pipes are vertically arranged on the upper side of a round tube conveying support, a bearing plate translation swing rod is arranged on the part, located on one side of a push rod rotation cam, of the round tube conveying support, a push plate translation connecting rod is arranged between the bearing plate translation swing rod and a round tube transfer bearing plate, a reciprocating rotation round plate is connected to aguide plate rotation support in a rotating mode, a round tube overturning containing chamber is arranged on the outer side of the reciprocating rotation round plate, two branch material guide bearingplates are arranged above a branch reciprocating guide plate in the translation direction of the branch reciprocating guide plate in sequence, and a round tube conveying belt is arranged on the parts,on the two sides above the branch conveying support, of the round tube conveying support. The round metal tube conveying and overturning device is reasonable in structure design, round metal tubes can be stably and accurately overturned to regulate a station one by one and can be continuous and smoothly guided and conveyed in a branched mode, the conveying automation degree of the round metal tubes is improved, and the machining and using needs are met.

The invention provides a range hood. The range hood comprises a shell, wherein a fan system is arranged in the shell. A cooking fume collection hood is rotatably connected to the shell. Smoke enters the shell through the cooking fume collection hood. A power device is arranged in the shell. The cooking fume collection hood is in a top suction state when perpendicular to the longitudinal axis of the shell and is in a side suction state when driven by the power device to rotate by an angel alpha relative to the shell. The cooking fume collection hood is rotatably connected to the shell. In the common state, the cooking fume collection hood is perpendicular to the longitudinal axis of the shell, and, the range hood serves as a top-suction range hood. When the range hood needs to be convertedinto a side-suction range hood, the power device is started to rotate the cooking fume collection hood, so that a certain inclination angle is formed between the cooking fume collection hood and the shell, and the range hood is converted into a side-suction range hood. Through the cooperation of the power device and the cooking fume collection hood, the range hood can achieve the functions of twodifferent range hoods.

The invention provides an eccentric wheel type antifriction and resistance-reducing device. At least one row of resistance-reducing wheel assemblies are arranged on a cylinder body; each row of resistance-reducing wheel assemblies at least comprise three resistance-reducing wheel assemblies; an included angle is formed between a section of each resistance-reducing wheel assembly and the axis of the cylinder body; the resistance-reducing wheel assemblies are protruded out of the outer surface of the cylinder body and are cylindrical; an axis of each resistance-reducing wheel assembly and an axis of the cylinder body are two non-uniplanar lines; projections of multiple resistance-reducing wheel assemblies on a section perpendicular to the axis of the cylinder body form a projection section of the resistance-reducing wheel assemblies; projections of every two adjacent resistance-reducing wheel assemblies are in rotational symmetry to the axis of the cylinder body; an angle formed between the axis of each resistance-reducing wheel assembly and the axis of the cylinder body is an acute angle and is consistent relative to the inclined direction of the cylinder body axis; in the feeding-in process of a drilling column, the resistance-reducing wheel assemblies are in contact with a well wall, so that the resistance-reducing wheel assemblies rotate, and sliding friction between the well wall and the drilling column is converted into rolling friction between the well wall and the resistance-reducing wheel assemblies; the drilling column is axially fed in and circumferentially rotates to drive the resistance-reducing wheel assemblies to rotate, and further friction resistance is reduced.

The invention discloses an auxiliary device for laying a power transmission line, which is characterized in that a vertically placed cable tray is placed in an annular groove in a base, the upper part of the base is provided with a driving mechanism for driving the cable tray to rotate, and one side of the upper surface of the base is provided with a vertical rod matched with the vertically placed cable tray; a cable carding mechanism capable of sliding in the axial direction of the vertical rod is arranged on a rod body of the vertical rod, and in the self-rotation process of the cable reel in the take-up or pay-off process, the cable carding mechanism clamps and conveys cables and drives the cable reel to do reciprocating lifting movement through a lifting adjusting mechanism, so that cable carding operation on the cable reel is achieved. The cable reel can be stably, conveniently and vertically placed in the annular groove in the upper portion of the base through lifting equipment, the cable reel is driven by the driving mechanism to rotate to achieve cable take-up and pay-off operation, and the cable carding mechanism can achieve reasonable and orderly cable take-up or conveying operation. And the phenomenon that the cable on the cable reel is wound and knotted is effectively avoided.

The invention discloses an automotive ignition switch structure, and aims at providing an ignition switch which is reasonable in structure and high in overall stability and can be used for stably and effectively achieving rotation, contact and conduction and by which contact stability of a contact position is achieved and different contact pieces are distributed in a layered and regional manner. The ignition switch comprises a base, a cover shell and a switch cavity, wherein a static rivet and a plurality of shift rivets are arranged on the base, outer ends of the static rivet and the shift rivets are connected to each shift circuit of the ignition switch via wires, a driving rotation body is arranged in the switch cavity, a rotation hole is arranged on the cover shell, the outer end of the driving rotation body extends into the rotation hole, a key jack and a transverse extension part are arranged on the driving rotation body, a stator positioning base and a rotor positioning base are arranged on the base, a movable contact piece is arranged between the rotor positioning base and the transverse extension part and comprises a movable ring seat and a bridge convex connect piece, a movable contact spring is arranged between the movable contact piece and the transverse extension part, a static contact piece and a static contact spring are arranged on the driving rotation body, and the static contact piece is in contact with the inner end of the static rivet.

The invention discloses a centrifugal device for biological enzyme purification, which comprises a bottom plate of the device, a first motor is installed on the top of the bottom plate of the device, a threaded collar is installed on the output shaft of the first motor, and a device shell is arranged above the threaded collar , both sides of the device shell are equipped with a push device. The push device includes a support plate, which is respectively connected with the side walls on both sides of the device shell. The top of the support plate is equipped with a second motor, and the output shaft of the second motor is welded. The threaded rods are threaded with threaded collars on the outside of the threaded rods. The side walls of the device housing are respectively provided with two sets of circular grooves, and one end of the threaded rods is respectively rotatably connected with the device housing at the circular grooves. Compared with the existing devices, the present invention can better seal the device casing to prevent the solution from spilling out, and the device casing can also maintain a stable state during centrifugal movement, thus making the centrifugation process efficient and stable proceed.

The invention relates to the technical field of a shield tunneling machine, and discloses a shield tunneling machine for tunnel driving. The shield tunneling machine for tunnel driving comprises a shield tunneling machine body, a cutter head is arranged on the left side of the shield tunneling machine body, and a hob is arranged in the middle of the cutter head; the outer side of the cutter head is fixedly connected with a connecting circular rail, a driving steel sleeve is movably connected to the other side of the connecting circular rail, and a driving inclined ring is fixedly connected tothe left end of the driving steel sleeve; and a jack hydraulic pump is fixedly connected to the right side of the cutter head. According to the shield tunneling machine for tunnel driving, a rotatingmachine, the driving steel sleeve and the connecting circular rail are arranged, the rotating machine drives the driving steel sleeve to open a way at the front end of the outer side of the cutter head while the cutter head is in driving state, the uneven pressure on the cutter head in the process of driving is effectively reduced, the stable and efficient rotation of the hob are ensured, disturbance to the cutter head surface is avoided, the accuracy of the driving direction is ensured, the degree of abrasion of the hob is reduced, the service life of the device is prolonged, and the accuracyand reliability of the device are improved.

The invention discloses a control apparatus and a control method of a switch reluctance motor. The control apparatus comprises a control apparatus body, a hardware system, a chopper controller and a logic circuit; and the control apparatus body is provided with a wiring end, a signal transceiving module, a rotary speed reference module, a speed signal detection module, a logic circuit, a speed mode selector, a detector, a switch reluctance motor, a frequency voltage converter, a single-pulse controller, a chopper controller, a power converter, a controller, a DSP chip, an D/A conversion module, a current sampling module, a filtering amplifier, a comparator and a time delay device. The control apparatus is flexible in control, high in controllability, and high in efficiency; by controllingthe on-off time of the magnetic pole coil by the controller, the motor rotary speed can be controlled; and position closed-loop control of the switch reluctance motor is accurate in each phase time, and regular excitation is performed to generate stable and effective rotation.