42results about How to "Guaranteed free rotation" patented technology

The invention relates to a safety valve body clamp capable of rotating by 90 degrees, and belongs to the technical field of clamps. The safety valve body clamp comprises a base plate; a left side plate and a right side plate are arranged on the left side and the right side of the base plate respectively; a convex round block is arranged on the inner side face of the left side plate; a connecting bolt is arranged on the rear side of the upper portion of the right side plate in a passing manner; an elastic pin is fixed to the front side of the upper portion of the right side plate; a sleeve valve frame is arranged between the left side plate and the right side plate; a bottom through hole is formed in a bottom plate of the sleeve valve frame; a side through hole is formed in the left end face of the sleeve valve frame; a bolt bearing set is arranged on the left end face of the sleeve valve frame in a passing manner; and a first positioning hole and a second positioning hole matched with elastic pins are correspondingly formed in the bottom of the front side of the right side face of the sleeve valve frame and the upper portion of the rear side of the sleeve valve frame respectively. The bolt bearing set is adopted to support a safety valve body; the extending length of bearing bolts is adjustable; and the safety effect on a safety valve body is achieved. The matched connection relation of the convex round hole and the side through hole is adopted, supporting of the convex round block for the sleeve valve frame is ensured, and it is also ensured that the sleeve valve frame can freely rotate.

The invention discloses an oscillating type vibrating energy collecting device. The oscillating type vibrating energy collecting device comprises a casing, a stator assembly and a rotor assembly, wherein permanent magnets are vertically arranged in the stator assembly; the permanent magnets are arranged on circumferences of an external upper magnet yoke and an external lower magnet yoke at equal circular arc in a spacing manner; coils are arranged on an iron core in the rotor assembly; 2n iron cores are arranged on the circumferences of a rotor upper magnet yoke and a rotor lower magnet yoke at equal circular arc in the spacing manner; a shaft is arranged between the rotor upper magnet yoke and the rotor lower magnet yoke; 2n magnetic teeth are arranged on outer rings of the rotor upper magnet yoke and the rotor lower magnet yoke at equal circular arc in the spacing manner; the clearance of the magnetic teeth is greater than twice the width of each magnetic tooth; 3n magnetic teeth are arranged on inner rings of the external upper magnet yoke and the external lower magnet yoke at equal circular arc in the spacing manner; the width of each magnetic tooth is equal to the clearance between the magnetic teeth; the rotor upper magnet yoke is positioned in the external upper magnet yoke and the magnetic teeth between the rotor upper magnet yoke and the external upper magnet yoke make contact; the rotor lower magnet yoke is positioned in the external lower magnet yoke and the magnetic teeth between the rotor lower magnet yoke and the external lower magnet yoke make contact; the magnetic tooth width of the rotor magnet yoke is smaller than the magnetic tooth clearance of the external magnet yoke. The oscillating type vibrating energy collecting device disclosed by the invention is higher in collecting efficiency.

The invention relates to a main core roll system, a ring rolling machine and a method for adjusting the angle of the radial main core roll of the ring rolling machine, belonging to the field of metal rolling. The main core roll system includes: a main core roll, the main core roll One end of the core roll is connected to the first main core roll slider through the first bearing part, and the other end of the main core roll is connected to the second main core roll slider through the second bearing part; the bearing seat guide device, the bearing The seat guiding device is respectively connected with the first main core roll slider and the second main core roll slider, and the bearing seat guide is used to guide the inclination of the main core roll and carry The radial force and axial force at both ends of the main core roll; the main core roll moving device, the main core roll moving device includes a first independent driving end and a second independent driving end, and the first independent driving end is connected to the The first main core roll slider is connected, and the second independent driving end is connected with the second main core roll slider. It reduces the amount of subsequent processing of large shaped rings.

The invention relates to a rope wheel type automobile window lifter. An angle Alpha between a supporting assembly surface of a guide rail pulley of the widow lifter and a steel wire rope outgoing direction is determined by a formula, wherein T represents the circulation times of upward sliding and downward sliding of the window lifter, s1 represents the stroke of a sliding block when the sliding block slides to a position where the steel wire rope is attached to the guide rail from an upper stop point, s2 represents the stroke of the sliding block when the sliding block slides to a lower stop point from the position where the steel wire rope is attached to the guide rail, F.sina Alpha represents the axial pressure of the steel wire rope to the pulley, n represents the corresponding unit abrasion loss, and m represents the corresponding abrasion loss when the window lifter loses effectiveness; when the sliding block is at the upper end of the guide rail, an included angle between a connecting wire led from the steel wire rope to the sliding block and the supporting assembly surface of the pulley is Alpha 1; and during the sliding block slides to the bottom of the guide rail from the upper part to the lower part, as the working surface of the guide rail is arc-shaped, the steel wire rope can be attached to the upper surface of the guide rail, and an included angle between a connecting line led from the steel wire rope to the attaching point and the supporting assembly surface of the pulley is Alpha 2.

The invention discloses a method for preventing a two-way hydraulic shock absorber from buckling and the shock absorber. The method is to set the limit component at the lower end surface of the connecting body in the outer casing of the two-way hydraulic shock absorber; the connecting body and the oil cylinder are connected by torque transmission thread, and the torque transmission thread between the connecting body and the oil cylinder is used to prevent connection. The connection thread between the body and the cylinder is buckled. The invention cancels the easy-release screw connection between the centering outer cylinder and the spline body in the existing two-way hydraulic shock absorber, and moves the limiting surface to between the lower connecting body and the limiting block. The limit block is composed of two half rings, which are directly snapped into the ring groove of the mandrel during installation and fixed with the limit block nut. In order to ensure the free rotation of the limiting block in the annular groove of the mandrel, the relative rotation between the mandrel and the limiting surface of the connecting body is eliminated. At the same time, the connection thread between the connecting body and the oil cylinder is a torque transmission thread, which is always in the state of working torque, so as to ensure that the two-way hydraulic shock absorber will not fall off under the condition of low drilling pressure.

The invention relates to an output-adjustable raft type wave pump which comprises wave energy acquisition buoys, hydraulic devices and water inlet and outlet devices. The first wave energy acquisition buoy is anchored on the seabed through an anchor chain. Each wave energy acquisition buoy comprises a rib plate, two vertical slides are tightly connected on each of the front end face of each rib plate and the rear end face of the previous wave energy acquisition buoy, and a rotary part base which is vertically adjustable is arranged on each slide. Each rotary part base on the rib plates is rotationally connected with the bottom end of a cylinder body of the corresponding hydraulic device through a connecting rod, the upper side wall and the lower side wall of the rear end of each cylinder body is provided with a water inlet and a water outlet respectively, and the upper side wall of the front end of each cylinder body is provided with an air hole. A piston rod is inserted in each cylinder body, the rod end of each piston connecting rod horizontally penetrates a through hole formed in the front end face of the corresponding wave energy acquisition buoy and is then rotationally connected with the corresponding rotary part base on the rear end face of the previous wave energy acquisition buoy, and a seal cover is arranged on each through hole. The size of each through hole satisfies the condition that the hydraulic device rotationally connected on each rotary part base and the front end face of the corresponding wave energy acquisition buoy do not interfere with each other when each rotary part base is located at the highest point or the lowest point of the corresponding slide.

The invention relates to a train bogie rectifying device and relates to the technical field of train rectifying. The train bogie rectifying device comprises a dome track, dome wheels, a casing frame, an access door, a dome outer casing, a carriage vehicle bottom, a bogie side frame, a guide device, a guide shaft, a guide shaft rubber sleeve, a guide sleeve, a guide sleeve seat, a guide sleeve seat board and a bogie. The train bogie rectifying device is characterized in that the dome outer casing is in a box shape with an upper opening and a lower opening, the dome outer casing is covered outside the bogie, the dome wheels are installed on two sides of the front upper portion and the rear upper portion of the outside covered dome outer casing, the dome outer casing is connected with the dome track through the dome wheels, and the dome track is connected with the carriage vehicle bottom. According to the train bogie rectifying device, on the premise that movement performances of train operation are not changed, air resistance of train operation is reduced, energy consumption is reduced, or train operation speeds are increased; free rotation of the bogie and relative movement of the bogie and a wagon box in an upward and downward direction are guaranteed; radiating during braking is guaranteed; loads are not added to the bogie; and the train bogie rectifying device is convenient to maintain.

The invention relates to an on-line test device for dynamic friction performance of paired angular contact ball bearings. It uses the principle of air suspension and combines precision displacement measurement and adjustment technology. Bearing II is loaded in a non-contact axial direction, and the friction torque measuring device proposed by our research group in the patent "A High-speed Miniature Bearing Dynamic Friction Torque Measuring Instrument" (application number: 201610639490.9) measures the friction torque of the tested bearing II, thereby realizing Synchronous online measurement of friction torque, vibration, temperature and wear of a single precision bearing. The outer ring of the accompanying test bearing I of this device is fixed on the base, which not only can limit the rightward movement of the shaft system, but also can be used together with the radial axial air bearing and the non-working surface of the thrust plate when the shaft system is not working statically. To undertake the moment balance of the shaft system through careful counterweighting, so as to protect the non-working surface of the high-precision radial and axial air bearings from long-term contact damage.