41results about How to "Guaranteed free rotation" patented technology

The invention relates to an on-line testing device for the dynamic friction performance of paired angular contact ball bearings. On the basis of the principle of air suspension, the non-contact axialloading of a tested bearing II is obtained while the ultra-low friction support of the high-speed rotating spindle is realized by combining the measurement and adjustment technologies of precision displacement; and the friction torque of the tested bearing II is measured by using a friction torque measuring device put forward by the patent named as "high-speed miniature bearing dynamic friction torque measuring instrument" with the application number of 201610639490.9 in the research group, thereby realizing simultaneous on-line measurement of the friction torque, vibration, temperature and wearing amount of a single precision bearing. Since the outer ring of a partner tested bearing I is fixed on a base, right movement of the shafting is limited and when the shafting is in a static stateand does not work, the shafting, together with non-working faces of the radial-axial air bearing and the thrust disc, bears the shafting torque balancing after careful balance weight, thereby protecting the non-working surface of the high-precision radial-axial air bearing from being in contact for long time and being damaged.

The invention relates to the technical field of coal mining, and in particular relates to a lurking type composite solid lubrication cutting tooth component of a coal cutter and a lurking type composite solid lubrication cutting tooth component method. The component comprises a cutter tooth, a cutter tooth sleeve and a cutter tooth base, wherein the upper end of the cutter tooth is a tapered body; the lower end of the cutter tooth is formed into a cutter tooth handle by a cylindrical body; the cutter tooth sleeve is sleeved at a cutter tooth handle end of the cutter tooth; the cutter tooth sleeve is located and assembled inside the cutter tooth base; and a gap coaxial body is formed by the cutter tooth, the cutter tooth sleeve and the cutter tooth base. The component is characterized in that at least one gap surface of the cutter tooth and the cutter tooth sleeve and a gap surface of the cutter tooth sleeve and the cutter tooth base are provided with lurking pits; and a waterproof, dustproof and long-acting composite solid lubricant special for a GR cutter tooth is filled into the gap between the cutter tooth and the cutter tooth sleeve and inside the lurking pits. The invention provides the lurking type composite solid lubrication cutting tooth component of the coal cutter and the lurking type composite solid lubrication cutting tooth component method, so that the problems that the parts between the cutter tooth and the cutter tooth sleeve and between the cutter tooth sleeve and the cutter tooth base are severely abraded in the prior art are solved, and the service lives are short.

The invention discloses a portable sediment sampler and a sampling method. The sampler comprises a fixed support, a sampling rod and a sampler, wherein the fixed support is connected with a fixing device, the sampling rod is connected with a sleeve, the sleeve is ball-jointed on the fixed support, a detachable cylinder is also mounted below the sleeve, one end of the cylinder is located on the fixed support, the sampling rod comprises a fixed rod and a telescopic rod, the sampler is mounted at one end of the telescopic rod, a sampling shovel is mounted at one end of the sampler and connected with the fixed rod through a string, the sampling shovel comprises an upper clamping piece and a lower clamping piece which are mounted on the sampler through hinged shafts, and tail ends of the upperclamping piece and the lower clamping piece are connected through a spring. The string is tensioned, the sampling shovel is opened, the sampler works, after the sampler finishes the work, the string is loosened, and the sampling shovel is closed. The portable sediment sampler can sample riverbed sediment at different depths, ensure that the sampling rod rotates freely and keep stable.

The invention relates to a combined type showing stand. The combined type showing stand comprises multiple combined frames connected together. Each combined frame comprises two display racks and a display board. Each display rack comprises a rack body and a semicircular rotary shaft, wherein an insertion groove allowing the corresponding display board to be inserted therein is formed in one side face of the rack body, an upper lug and a lower lug are arranged on the side face, opposite to the insertion groove, of the rack body, the upper lug is arranged at the upper end of the rack body, the lower lug is arranged at the lower end of the rack body, a rotary shaft is fixedly arranged between the upper lug and the lower lug, the semicircular rotary shaft comprises a semicircular shaft body and a rotary shaft hole penetrating through the shaft body, the rotary shaft is sleeved by the semicircular rotary shaft in a rotary mode, and the semicircular rotary shaft is located between the upper lug and the lower lug. Insertion blocks matched with the corresponding insertion grooves are arranged on the two sides of each display board, and the two sides of each display board are each provided with one display rack in a matched mode. The semicircular rotary shafts on adjacent display racks of adjacent combined frames are fixedly connected into a complete cylindrical rotary shaft. The combined type showing stand is ingenious in design, convenient to assemble and disassemble and capable of rotating freely for adjustment.

The invention discloses a crowned tooth universal drive shaft. Left / right crowned tooth external toothed sleeves and left / right crowned tooth internal toothed rings matched with the left-right crowned tooth external toothed sleeves are installed on the peripheries of the two ends of a shaft body in a key-groove mode, and internal / external crowned teeth machined on the external toothed sleeves and the internal toothed rings are mutually engaged. Left / right internal convex spherical sleeves, external concave spherical sleeves and external convex spherical sleeves are symmetrically installed on the positions, close to the external toothed sleeves, on the periphery of the shaft body, and a plurality of layers of sealing rings are arranged among the left / right internal convex spherical sleeves, the left / right external concave spherical sleeves and the left / right external convex spherical sleeves. Left / right internal concave spherical sleeves and pressing rings are further installed on the spherical surfaces of the left / right external convex spherical sleeves, a plurality of elastic compensators are assembled on the pressing rings connected with the external convex spherical sleeves and the middle pressing rings so that appropriate intervals can be reserved between concave spherical movable sleeves and concave spherical fixed sleeves on the left / right concave spherical sleeves, and lubricating oil cavities are formed between the left / right external toothed sleeves and the external convex spherical sleeves. The drive shaft is driven by the crowned teeth so that universal drive can be achieved, the stress end and the force transmitting end of the drive shaft are sealed by double spherical surfaces, the sealing effect is good, oil leakage does not occur, running is stable, and the crowned tooth universal drive shaft has popularization value.

The invention discloses a flat steering engine of an inner rotor structure. The flat steering engine comprises a steering engine shell, a motor stator fixed in the steering engine shell, a motor rotorcoaxially arranged in the motor stator in a sleeving mode, and a speed reducing mechanism, wherein the motor rotor is of a cylinder structure with an installation cavity inside, and a through hole isformed in the middle of the motor rotor in the direction of the central axis of the steering engine shell; the speed reducing mechanism is kept fixed relative to the steering engine shell through thesteering engine base, and is partially suspended in the mounting cavity of the motor rotor, and a central hole coaxial with the through hole is formed in the middle of the speed reducing mechanism; ashaft body matched with the through hole and the central hole is rotationally connected to the steering engine shell through a bearing; power of the motor rotor is transmitted to the input end of thespeed reducing mechanism through the shaft body. The flat steering engine is advantaged in that a part of the speed reducing mechanism is suspended in the mounting cavity of the motor rotor, so the axial length of the steering engine is shortened, the structure of the steering engine is more compact, and the steering engine further has the advantages of large output end torque, high transmissionefficiency, stable transmission, long service life and high integrity.

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 discloses a limiting device for a plastic housing, and belongs to the field of housing assembly. The limiting device comprises a movable door housing, wherein one end of the movable doorhousing is provided with a plurality of first installation grooves and a plurality of bosses; a movable door top frame, one end of which is provided with a plurality of second installation grooves and a plurality of grooves, wherein the grooves are matched with the bosses, and the movable door top frame can be rotatingly arranged at the upper end of the movable door housing around the length direction of the second installation grooves; and a plurality of link hinges, each of which comprises a first rotating installation block, a second rotating installation block, and a rotating part, wherein two ends of each rotating part are respectively provided with a first installation block and a second installation block, each first installation block is installed in one first installation groove,and each second installation block is installed in one second installation groove. The limiting device is simple and reliable, is low in manufacturing cost, and can guarantee that the external surfaces of two housings are located on the same vertical plane.

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.

A timber frame semi-automatic inclination adjustment resetting device is provided with a box base, a machine body column, a counterforce frame, a pulley device, a cross arm, a synchronous hydraulic jacking device, a double-acting hydraulic oil cylinder and a mechanical hoop. A hydraulic pump station is arranged in the box base, and the machine body column and the counterforce frame are fixed on the box base. The top of the machine body column is connected with the middle of the cross arm through a cross-shaped hinge. The double-acting hydraulic oil cylinder is arranged at the front end of the cross arm, and a piston rod of the double-acting hydraulic oil cylinder stretches out of the cross arm. The piston rod of the double-acting hydraulic oil cylinder is connected with the mechanical hoop through a cylinder pin. The rear end of the cross arm is hinged to a pulley in the pulley device. The pulley can horizontally move in a plane of the pulley device at will. The synchronous hydraulic jacking device is arranged on the inner side of the counterforce frame and used for controlling lifting of the pulley device. The hydraulic pump station is connected with the double-acting hydraulic oil cylinder and the synchronous hydraulic jacking device through oil delivery pipelines respectively. The timber frame semi-automatic inclination adjustment resetting device is used for achieving automatic and precise control over inclination adjustment of an ancient architecture timber structure column grid, and timber architectures are repaired and protected better.