114results about How to "No swing" patented technology

The invention discloses a concentric sliding block simultaneous casing drilling tool, a center drilling bit and centralizer. The concentric sliding block simultaneous casing drilling tool is formed by the centralizer, a ladder-shaped tapping center drilling bit and semicircle-shaped expanding drilling pieces, wherein the ladder-shaped tapping center drilling bit is connected and matched with a hole to which the centralizer is aligned for torque transmission, the ladder-shaped tapping center drilling bit is connected and located through a locating groove, a locating hole, a solid cylindrical pin and a hollow expansion pin, three semicircle-shaped expanding drilling pieces are in torque transmission through a T-shaped oblique groove and an R arc-shaped oblique groove, mutual included angles of the T-shaped oblique groove and the R arc-shaped oblique groove are 120 degrees by using an axis of the ladder-shaped tapping center drilling bit as the center, the semicircle-shaped expanding drilling pieces slide backwards to the end surface of the centralizer along the T-shaped oblique groove and the R arc-shaped oblique groove when being subjected to rock resistance and can be located, an expanding simultaneous casing can be formed, and the semicircle-shaped expanding drilling pieces slide downwards, can be narrowed and withdrawn due to the resistance of a pipe boot during upward drawing. According to the concentric sliding block simultaneous casing drilling tool disclosed by the invention, the front area of the tapping drilling bit is small, the force is concentrated, and the tapping drilling bit can crush harder or large rocks firstly at stages at crushing speed.

The invention discloses a bridge crack real-time monitoring and quick pre-warning device which comprises binocular vision sensors, loudspeakers, safety railings and a monitoring system. The lower portion of the bridge face between every two piers of a bridge is provided with a combined binocular vision sensor part, the binocular vision sensors are arranged on the top of a bridge protective handrail at intervals, information collecting results of all combined binocular vision sensor parts and the binocular vision sensors are transmitted to a monitoring main machine remotely in a wireless mode, the two ends of the bridge are respectively provided with one safety railing, and each safety railing is provided with one loudspeaker. The bridge crack real-time monitoring and quick pre-warning device can monitor and judge the size of a crack of the bridge and the dangerous level of the crack in real time, and can monitor sudden enlargement of the small crack in real time so as to enable vehicles on the bridge to pass or stop, and the ability to monitor and prewarn sudden dangers is improved.

The invention discloses an electric turnover device of vehicle-mounted liquid crystal television, comprising a motor fixing support, a direct-current speed-reduction motor, an axle sleeve, a damping block, a right fixing support, a right bearing, a plurality of external friction sheet, a plurality of friction sheet, a spring, a nut, a left shaft, a left bearing, a left fixing support, and an angle sensor. The friction force generated by the engagement between the damping block and the axle sleeve forms damping force, to confirm that in serious vibration, the motor turnover device will not damage speed-reduction gear and can avoid the swig of liquid crystal screen, to affect vision effect. The nut, spring, external friction sheets, internal friction sheets, and right fixing support form a constant-torque device, to provide flexibility to the electric turnover device in turnover process, therefore, the liquid crystal screen can automatically stop when meets hand or obstacle in turnover, to avoid clamping hand and protect motor.

The invention provides a wafer vertical stability calibration system and a method for calibrating the vertical stability of a wafer. The system comprises a wafer to be calibrated, a supporting device,a dynamic balance system and a grabbing device, wherein supporting device is used for placing the wafer to be calibrated; the dynamic balance system is arranged at two sides of the wafer to be calibrated and opposite to the surface of the wafer to be calibrated, the dynamic balance system includes a plurality of nozzles which are different in position, the nozzles can spray a liquid or gas to thesurface of the wafer to be calibrated so as to calibrate the position of the wafer to be calibrated and enable the wafer to be calibrated to keep a vertical state; and the grabbing device is used forgrabbing the wafer to be calibrated to move from one position to another position. The system provided by the invention avoids the problems such as wafer dropping, breaking and scratching due to thechange in position when a transmission gripper grabs the wafer, and improves the yield and output.

The invention relates to the field of marine mechanical equipment, and provides an active rigid and flexible mixed wave motion compensation device and a control method thereof; the compensation deviceis used for wave compensation in the goods feeding process; and the compensation device comprises a lifting mechanism arranged on a feeding ship, and a rigid and flexible mixing compensation mechanism whose upper part is connected with the lifting mechanism. The compensation device achieves excellent interference resistance, can place goods on a ship more stably and precisely, effectively protects the safety of the goods, a ship body and workers, adopts rigid and flexible mixed compensation control, is large in working space and higher in flexibility, can deal with the change to timely respond, and achieves good dynamic control effect. The compensation device and the control method thereof solve the problems of incapability of meeting actual application demands and weak compensation effect in a traditional active wave compensation device.

The invention discloses a damping device for a sliding door. The damping device comprises an immobile part, a movable part, a toggling mechanism and a damping mechanism; the toggling mechanism comprises a fixed part and a toggling part; the damping mechanism comprises an oscillating member which is arranged on a fixed seat through a spring in a sliding manner, wherein the oscillating member is provided with a locating gap buckled with the toggling part in a collision way, the fixed seat is provided with a damper, a piston rod of the damper protrudes towards the direction of the oscillating member and at least one section of travel of the piston rod acts on the oscillating member when the damper is used for buffering; the spring is a tension spring, one end of the spring is connected with the fixed seat, and the other end of the spring wound around a turning member on the fixed seat and then is connected with the oscillating member; the toggling mechanism is arranged on the immobile part, the damping mechanism is arranged on the movable part and is provided with a damping roller, or the toggling mechanism is arranged on the movable part and is provided with a toggling roller, the damping mechanism is arranged on the immobile part, and either the damping roller or the toggling roller is rotationally located on the immobile part and/or the toggling mechanism when the movable part moves. The damping device is strong in practicality.

The invention provides a driving device for a lifting platform of a stereo garage. The driving device for the lifting platform of the stereo garage comprises four power gears, two vertical double-faced racks and four hydraulic motors, two hydraulic motors are mounted at the left end of a steel truss of the lifting platform, the other two hydraulic motors are mounted at the right end of the steel truss of the lifting platform, the power gears are mounted on the output shafts of the hydraulic motors, the vertical double-faced racks are mounted on the walls of the stereo garage, the faces of the vertical double-faced racks are engaged with the power gears, and driven gears witch are engaged with the vertical double-faced racks are mounted on the steel truss of the lifting platform. According to the driving device for the lifting platform of the stereo garage, the hydraulic motors, the power gears and the driven gears are arranged both at the left end and the right end of the steel truss of the lifting platform, each face of the vertical double-faced racks is engaged with one power gear and one driven gear, therefore, the driving device for the lifting platform of the stereo garage is balanced vertically and is symmetrical laterally, and the lifting platform is table and does not incline or swing in the lifting operation and when a car is parked or picked up. The hydraulic motors, the power gears and the driven gears are all arranged in the lifting platform, the vertical double-faced racks are mounted in the garage, and thus the driving device for the lifting platform of the stereo garage has the advantages that the structure is compact, no additional machine room needs to be built on the ground, and the land surface area is saved.

The invention discloses a crane with good stability. The crane comprises a main beam, wherein a trolley is movably arranged on the main beam; the trolley comprises a trolley frame; a lifting appliance is arranged under the trolley frame in a lifting manner; the lifting appliance comprises a beam, and a movable pulley is arranged on the upper part of the beam; the lifting appliance is arranged on the trolley frame in a lifting manner through a steel wire rope wound on the movable pulley and a rotary drum arranged on the trolley frame; rotary shafts are arranged on the end surface parts of the two ends of the beam and are vertical to large guide wheels in the extending direction of the beam; rotary shafts are arranged on the two end parts at the two sides of the beam and are in parallel with small guide wheels in the extending direction of the beam; a guiding frame is fixed on the lower part of the trolley frame; the guiding frame is provided with a guide rail pair and limit guide rails at two ends of the beam; the two guide rails of the guide rail pair are respectively in rolling and limit fit with the small guide wheels at the two sides of the corresponding end of the beam; and the limit guide rails are respectively in rolling and limit fit with the large guide wheels at the corresponding end of the beam.

An internally-engaged dual-rotor screw pump for delivering liquid on the ground or underground immersible purpose is disclosed. Its external rotor is internally engaged with its internal rotor. If it is used for delivering liquid on the ground, its dual-rotor engaging structure is housed in a casing with external rotor driven mechanism. If it is used as underground immersible pump, said engaging structure is housed in a non-rotary casing.

A molded surface fastener has no stagger between the once engaged engaging elements and has high engagement force so as to strongly prevent the release of the engaging elements, whereby, it is possible to smoothly press and joint the molded surface fasteners made of a synthetic resin each other. A molded surface fastener made of a synthetic resin has an engaging element and a fitting projection on a surface of a plate-like substrate. The engaging element has a rising portion, which rises from a surface of the plate-like substrate and has an opposite pair of inclined faces, and an engaging head which is continuously formed on a top end of the rising portion and which is expanded at sides of opposite vertical faces in a horizontal direction except for the inclined faces. The fitting projection is positioned between the facing inclined faces of an adjacent pair of engaging elements of a mating surface fastener upon engagement of the engaging elements each other and has inclined faces, which are fit with and abut against both inclined faces, so that it is possible to prevent the stagger upon engagement.

The invention relates to a method for controlling displacement of a load which is suspended at a suspension point of a crane as a hoist type. The suspension point is designed in a manner of displaceable along rotation around a first axis (ZZ') in swinging and furthermore displaceable along the translation in a second axis (XX') which is crossed with the first vertical axis (ZZ'). The method comprises the steps of: an acquiring step for a preset speed value (Vi), and a filtering step for filtering the preset speed value by means of a virtual model (X<arrow>=AX+BU) of a using state vector (X). The state vector (X) comprises a swinging angle component of the suspended load, and the swinging angular speed component of the suspended load. Furthermore state feedback control is performed on the virtual model. The correction gain (ki1,ki2) of the state feedback control can be represented by a same type parameter (Tc) which can be freely adjusted by the driver of the crane.

The invention is a transmission unit with orthogonal axes for vehicles, comprising: a drive shaft (1) connected to a gearmotor unit with differential, comprising: a crown gear (2) that meshes with the drive shaft (1), said crown gear housing, in two diametrically opposed cavities (22, 23), one pair of planetary gear wheels (41, 42) having their axis lying on an ideal plane containing said crown gear; two sun gear wheels (35, 55) meshing with said planetary gear wheels (41, 42), each connected to an axle shaft (3, 5) belonging to a driven wheel. The crown gear is housed, rotatingly free, in one axle shaft (3) only.

The invention discloses a circled lining sewing mould comprising a first template and a second template which are used for clamping a lining piece; a first sewing groove penetrating through the thickness direction of the first template is formed in the first template, and a second sewing groove penetrating through the thickness direction of the second template is formed in the second template; thefirst sewing groove and the second sewing groove are in the same shape, and the first sewing groove and/or the second sewing groove is internally provided with a limiting line used for limiting the sewing position of a needle; and the first sewing groove and/or the second sewing groove is provided with a stop strip used for stopping the edge of the lining piece. According to the circled lining sewing mould, the lining piece is clamped through the first template and the second template, and the sewing grooves corresponding to sewing paths are formed in the templates; the limiting lines used for limiting the needle sewing operation are arranged in the sewing grooves, so that the sewing insertion position of the needle is more concentrated, and no swing occurs; and not only can the sewing speed of staff be increased, and the production efficiency is improved, but also the sewing quality is controllable.

The invention discloses a comprehensive carrying device for an acoustic-magneto-optical detector of an underwater robot, and belongs to the technical field of comprehensive carrying devices for acoustic-magneto-optical detectors of underwater robots. An acoustic response beacon is fixedly arranged at the top of the underwater robot, and a second floating body material is fixedly assembled on a dragging rod; tilt angle sensors are fixedly arranged at the assembly position of the height control rod and the towing rod and on the towing rod, a response type acoustic beacon is fixed to the electromagnetic detector, a USBL sonar array is fixedly arranged at the bottom of the water surface tugboat, and a second towing rope with a sheath is wound and assembled on the winding and unwinding pulley block structure. Third floating body materials are evenly and fixedly assembled on the upper portion of the second dragging rope with the sheath, dragging positioning weights are evenly and fixedly assembled on the lower portion of the second dragging rope with the sheath, the underwater acoustic-magneto-optical detector can be carried by the underwater robot at the same time, simultaneous application of the underwater acoustic-magneto-optical detector is achieved, and the height of the electromagnetic detector can be accurately calculated.

The present invention discloses a weight of standard machine loading device which comprises weight groups comprising a plurality of weights; each weight is step cylinder with circle center via; bottom circumference of small diameter section of each weight is evenly distributed with several lower spigots extending outwardly; the upper port of the first weight is evenly distributed with several upper spigots extending to the circle center; the circle center via of each weight from the second weight is step hole; the upper port at the big diameter end of the step hole is evenly distributed with several upper spigots extending to the circle center; the upper end face at the big diameter section of each weight from the second weight is evenly equipped with locating pins; the big diameter section of each weight from the first weight is further equipped with locating hole; the locating pins and locating holes of the adjacent weights are corresponding; the big diameter section of the lower weight is sleeved with the small diameter section of the upper weight in turn through the spigot. The weight is able to avoid the mutual dislocation of the upper and lower weights in the loading or unloading process, prevent the weight from swinging after loading and affect the indicating value of torque or force so as to improve the repeatability of the indicating valve.

A rotation supporting mechanism for opening and closing a cover in the plane direction can be made thin, and opening operability of the cover capable of being opened by a user with one hand and one touch is enhanced. The mechanism has pressing means for pressing in the plane direction a cam surface of an eccentric cam rotating in the plane direction. When the pressing means positionally corresponds to one section corresponding to an open position of the eccentric cam or the other section corresponding to a close position 180 degrees across from the open position, the means positionally restricts the rotation of the eccentric cam to stop the rotation of the cover.

A removable limiting device of a furniture drawer comprises a drawer body pushed and pulled on a furniture body through a sliding rail assembly to be closed and opened. The drawer body comprises a left side plate, a right side plate, a rear back plate, a bottom fixing device and a front face plate; the left end and the right end of the rear back plate are each provided with a removable limiting unit, and alternatively the rear end of the left side plate and the rear end of the right side plate are each provided with a removable limiting unit; each limiting unit comprises a rolling wheel clamping mechanism and an adjusting mechanism, each rolling wheel clamping mechanism is clamped on the corresponding adjusting mechanism in a removable mode, each rolling wheel clamping mechanism at least comprises a rolling wheel, and the rolling wheel clamping mechanisms at least are in coupling connection with the left sidewall and the right sidewall of the furniture body in a rolling limiting mode when the drawer body is pushed and pulled to be closed and opened. By means of the structural improvement, the removable limiting device has the advantages of being simple and reasonable in structure, reliable in performance, low in manufacturing cost, rapid to operate, convenient to maintain, high in universality, smooth and free of swing in the push-pull process and high in practicability.

The invention discloses a novel rotating earpiece, which comprises a front hinge, a rear hinge, a leg and an earpiece sleeve. Front ends of the front hinge and the rear hinge are movably connected; the tail end of the rear hinge is fixedly connected with the leg; the earpiece sleeve is fixedly wrapped outside the leg. The novel rotating earpiece also comprises a rotating slider, a spring, an abutment sleeve and a shiftable ornament. A gap is formed in the tail part of the rear hinge; the rotating slider passes through the leg, and is clamped at the gap position of the rear hinge; the spring passes through the leg, and is supported at the tail part of the rotating slider; the abutment sleeve passes through the leg, is supported at the tail part of the spring, and is fixed to the leg after the spring is compressed; the shiftable ornament is movably sheathed with the exterior of the rotating slider; the rotating slider can be driven to rotate when the shiftable ornament rotates; a rotatable ornament which is wrapped outside the leg and can rotate around the leg is also arranged between the rear hinge and the earpiece sleeve; the tail end of the shiftable ornament and the front end of the rotatable ornament can be connected in a manner of being capable of rotating synchronously. The novel rotating earpiece disclosed by the invention has the advantages of being simple in structure, convenient to assemble, low in manufacturing cost, good in rotating effect, flexible to shift, and the like.

The invention discloses a saddle structure with a cable twisting limiting function. The structure comprises a transition saddle, a limiting swing arm and a first cable separation assembly, the transition saddle and the limiting swing arm are hinged to the two ends of the limiting swing arm respectively, so the first cable separation assembly swings only in the vertical direction. The transition saddle comprises a support and a cable bridge used for carrying a cable, the support is installed on a tower drum, the limiting swing arm is hinged to the support, and a plurality of branching holes areformed in the first cable separation assembly. The suspension cable is isolated and clamped by the cable separation assembly, so that the cables are prevented from being wound and collided during yawing, and damage and electric leakage caused by mutual friction of cable sheaths are avoided. When the cable is arranged, a three-phase one-group arrangement mode is adopted, electromagnetic interference is reduced, current transmission quality is ensured, the limiting swing arm ensures that the cable only moves up and down and does not twist or swing, and stress of the cable is effectively reducedwhile abrasion of the cable is further avoided.