33results about How to "Play the role of anti-rotation" patented technology

The invention provides a scroll compressor. The scroll compressor comprises an enclosure, a static scroll plate, a support, a dynamic scroll plate, a driving part, a matching part, a hinge pin and a first antifriction part, wherein the static scroll plate is arranged in the enclosure; the support is arranged in the enclosure and connected with the static scroll plate; the dynamic scroll plate is clamped between the static scroll plate and the support and matched with the static scroll plate; the driving part penetrates a yielding hole in the support and drives the dynamic scroll plate to conduct eccentric motion; the matching part comprises a first matching hole and a second matching hole, one of the first matching hole and the second matching hole is formed in the dynamic scroll plate, and the other one is formed in the support; the hinge pin is arranged between the support and the dynamic scroll plate and comprises a first shaft segment and a second shaft segment, and the second shaft segment can do circular motion in the second matching hole; and the first antifriction part is arranged between the hole wall of the second matching hole and the second shaft segment, matched with the second shaft segment and used for reducing friction between the hinge pin and the hole wall of the second matching hole. By application of the technical scheme, the problem of high production cost of a scroll compressor in the prior art can be effectively solved.

The invention belongs to the technical field of vacuum pumps and especially relates to a vortex vacuum pump which comprises a vacuum generation device and a driving motor, wherein the driving motor can provide driving force for the vacuum generation device; a motor shaft of the driving motor comprises a motor section and an eccentric shaft section which are integrally formed; the vacuum generationdevice comprises a pump cavity, a movable scroll plate and a corrugated pipe sealing system, and the movable scroll plate is arranged in the pump cavity; the eccentric shaft section is arranged in the pump cavity and can provide power for the movable scroll plate to do translational motion in a compressed air area space in the pump cavity; the corrugated pipe sealing system can completely separate a non-vacuum area which the driving motor is arranged in from the compressed air area space in the pump cavity. The vortex vacuum pump disclosed by the invention has the effects of simple structure,good sealing performance and ability in preventing self rotation of the movable scroll plate.

The invention relates to the technical field of sealing, in particular to an energy storage sealing structure and a dynamic sealing device for a high-pressure easily vaporized medium. The energy storage sealing structure comprises at least one elastic shell and at least one energy storage elastic piece, wherein the elastic shell is provided with a pair of oppositely-arranged elastic arms, one endsof the pair of elastic arms are connected, and an opening allowing a medium to enter the space between the pair of elastic arms is formed by the other ends of the pair of elastic arms; each elastic arm comprises a first supporting arm and a second supporting arm which are arranged to form an included angle, and a first included angle between the first supporting arm and the axis of the elastic shell is greater than a second included angle between the second supporting arm and the axis of the elastic shell; and the at least one energy storage elastic piece is arranged in the space of the elastic shell, is used for supporting the elastic shell and deforms to store energy under the action of pressure. The energy storage sealing structure is simple and good in sealing effect.

The invention relates to a dry vacuum pump work system. The dry vacuum pump work system comprises a dry vacuum pump and a four-way valve. When the four-way valve is in a first work state, a first valve opening and a second valve opening communicate, and a third valve opening and a fourth valve opening communicate. When the four-way valve is in a second work state, the first valve opening communicates with the fourth valve opening, and the second valve opening communicates with the third valve opening. A first pipeline communicates with the first valve opening, and the other end of the first pipeline is a work end. A second pipeline communicates with the second valve opening, and the other end of the second pipeline communicates with an air inlet of the dry vacuum pump. A third pipeline communicates with the fourth valve opening, and the other end of the third pipeline communicates with an air outlet of the dry vacuum pump. A safety pipeline communicates with the third valve opening, and the other end of the safety pipeline communicates with the air. According to the dry vacuum pump work system, the dry vacuum pump is adopted, no oil exists in a cavity, the expense and space of arranging an oil-gas separator are saved, and the hidden danger that oil and other medium react with sewage and dirt, and the system performance is influenced is avoided; and the dry vacuum pump is simplein structure and convenient to repair, and the maintenance and repairing difficulty is reduced.

The invention provides an anti-loosening connecting mechanism. The anti-loosening connecting mechanism is used for achieving penetrating of a connecting body with a thread end and being fixed in a mounting hole of a panel. The anti-loosening connecting mechanism comprises an anti-loosening gasket and an anti-loosening nut. The anti-loosening nut is arranged at the bottom of the thread end. The anti-loosening gasket is arranged at the thread end in a sleeving manner and is located at the position between the anti-loosening nut and the panel. A fixed hole allowing the thread end to penetrate isformed in the middle of the anti-loosening gasket. A locating convex block is arranged on the edge of the fixed hole. A locating groove matched with the locating convex block is formed in one side ofthe thread end. Turnup folded corner portions attached to the surface of the panel are arranged on the corners of the periphery of the anti-loosening gasket. According to the anti-loosening connectingmechanism, button switches or indication lamps or other component products fixed by nuts can be effectively prevented from loosening, potential safety hazards caused by loosening can be avoided, meanwhile, the subsequent equipment maintenance cost is greatly reduced, the structure is simple, and popularization is convenient.

The invention discloses an automobile shifter assembly comprising a base, a cap ring, a rotating center ball, an operating rod, and a selector arm. The base is provided with a first shaft hole and a ball seat hole. The selector arm is provided with a second shaft hole and a spherical shaft hole. A first spherical pin is fixed on the rotating center ball. The cap ring is embedded in the ball seat hole. The rotating center ball is rotatably mounted in the cap ring. The operating rod is vertically and fixedly connected to the rotating center ball. The selector arm is fixedly connected to the rotating center ball through the spherical shaft hole and the first spherical pin and is hinged to the base through a shaft. The automobile shifter assembly further comprises a selector pull rod and an adjusting fastener. The automobile shifter assembly has the advantages that when the selector pull rod deforms due to long-term use, the adjusting fastener can be directly removed and re-embedded into a selector pull rod recess after a proper position is found.

The invention relates to the field of medical recovery devices, in particular to a pair of lower limb orthopedic training shoes. The pair of anti-rotation lower limb orthopedic training shoes comprises anti-rotation devices and a pair of training shoes, wherein the pair of training shoes comprises shoe covers and hand pull belts; the hand pull belts are fixedly connected with the shoe covers; theanti-rotation devices comprise anti-rotation plates, elastic anti-rotation belts and support plates; the two ends of the anti-rotation belts are fixedly connected with the two ends of the anti-rotation plates respectively; support plates are located above the anti-rotation plates; the ends, close to toes, of the support plates are fixedly connected with the middle sections of the anti-rotation belts; the ends, close to heels, of the support plates are propped against the anti-rotation plates; the ends, propped against the anti-rotation plates, of the support plates are arc; and the bottom surface of each shoe cover is detachably connected with one side face of each support plate. According to the anti-rotation devices of the pair of training shoes, the anti-rotation plates are pressed by self-weight of feet of a patient; and the anti-rotation belts at the two ends of the anti-rotation plates are held at the ends, fixedly connected with the anti-rotation belts, of the support plates, sothat the feet of the patient cannot be pronated or valgus freely.

The invention provides an overturning device. The overturning device comprises a supporting frame, a bearing structure, pivot shafts, a drive mechanism and a brake mechanism. The bearing structure isused for mounting components. The pivot shafts comprise the first pivot shaft and the second pivot shaft. The bearing structure is rotationally arranged on the supporting frame through the first pivotshaft and the second pivot shaft. The drive mechanism is arranged on the supporting frame and located at the position of the first pivot shaft, and the drive mechanism is in drive connection with thefirst pivot shaft to drive the bearing structure to be overturned. The brake mechanism is arranged on the supporting frame and located at the position of the second pivot shaft, when the rotation angle acceleration of the pivot shafts is higher than a preset value, a brake part of the brake mechanism moves to limit rotation of the second pivot shaft, and therefore the overturning action of the bearing structure is emergently braked. The problems that in the prior art, the overturning action of a cover plate of vacuum coating equipment is difficult to control and cannot be effectively braked,so that certain potential safety hazards exist are solved.

The invention provides an embedded type hot die forging piston die. The embedded type hot die forging piston die comprises an upper die and a lower die, the upper die and the lower die are mutually matched and connected to form an inner cavity, and the inner cavity comprises a skirt part, a core part and a combustion chamber; the lower die comprises a core, an inner ring, an outer ring and a base which are embedded together, the inner ring and the base are nested in the outer ring from top to bottom, the core is nested in the inner ring, and the base is located under the inner ring and the core; the contact surfaces of the core, the inner ring, the outer ring and the base are in interference fit; a straight section with a certain length is arranged on a combined surface among the core, the inner ring, the outer ring and the base; a flash groove is further formed between the upper die and the lower die and communicated with the combustion chamber. According to the split mode, different materials can be selected according to the stress conditions of different parts, the stress of the easy-to-crack part of the mold can be effectively reduced, the service life of the mold is prolonged, and mold manufacturing is facilitated.

The invention discloses a camshaft structure which comprises a camshaft body, wherein two concave holes allowing a motor rotating shaft to be inserted are formed in one end of the camshaft body in a vertically symmetrical manner; a first bearing block is arranged at the end, where the concave holes are located, of the camshaft body, is close to the concave holes and is bonded onto the camshaft body; the camshaft structure further comprises a second bearing block which is bonded with the camshaft body; a first bearing and a second bearing are in seal connection in the first bearing block and the second bearing block; an eccentric wheel is arranged between the first bearing block and the second bearing block and located on the upper end surface of the camshaft body; a groove is formed in the position, corresponding to the eccentric wheel, of the camshaft body; and the eccentric wheel is arranged in the groove. The camshaft structure can have a rotation prevention function when bearing torsional force and can obtain good lubrication, the radiating effect is improved, wear of a work surface of a tappet is reduced, certain adjustment can be performed on the tappet simultaneously, besides, the stability of the camshaft is improved, and the service life of the camshaft is prolonged.

The invention relates to a lower mounting structure of an automobile fender. The lower mounting structure comprises a side wall outer plate and a fender connected to the side wall outer plate, wherein a hexagonal hole is formed in the side wall outer plate, a hexagonal rivet is driven into the hexagonal hole; a notch is formed in the lower part of the fender; a fitting surface at the notch in the lower part of the fender is fastened with the side wall outer plate by virtue of a bolt. The lower mounting structure is compact and reasonable in structure, and convenient to operate and mount; the hexagonal hole is formed in the lower part of the side wall outer plate, and the hexagonal rivet is driven into the hexagonal hole and can be used for achieving the effects of preventing rotation; meanwhile, a riveting nut is used to replace a welding nut, so that welding penetration can be prevented, and the influences on the appearance surface quality are lowered. The fitting surface of the fender is designed into a form of the notch for regulating the gap between the fender and the side wall outer plate. The lower mounting structure of the automobile fender can be used for effectively overcoming the problem that the fender is difficult to mount when the parting seams in the lower parts of the door and the side wall, and the parting seams in the fender and the lower part are an integral body.

The invention discloses an integrated wire-controlled mechanism and an assembling method thereof. The integrated wire-controlled mechanism comprises a fixing seat, a buckle ring and a lock knob, wherein the integrated wire-controlled mechanism also comprises a forward and backward thread screw, a connecting rotator and a torsion spring; the connecting rotator is inserted into the bottom end part of the lock knob, the torsion spring sleeves the bottom end part of the lock knob, and the connecting rotator, the lock knob and the torsion spring are together arranged in the buckle ring; the buckle ring is arranged in the fixing seat in an inserting manner; the forward and backward thread screw comprises a main body, a backward thread which is formed in the upper end part of the main body, a backward thread which is formed in the lower end part of the main body; the forward and backward thread screw is inserted into the connecting rotator through the lock knob, and fixation of the lock knob and the connecting rotator is realized by anticlockwise tightening the forward and backward thread screw; the forward thread is used for being cooperated with an inner thread structure of an oil pressure locking rod, and the fixation of the wire-controlled mechanism and a front fork by clockwise tightening the forward and backward thread screw. According to the integrated wire-controlled mechanism disclosed by the invention, assembling of components can be realized only by using one forward and backward thread screw, so that the manpower is saved and the time is shortened.

The invention provides an insulation pull rod auxiliary connecting device of a solid-sealed polar pole and a pull rod supporting assembly.The insulation pull rod auxiliary connecting device of the solid-sealed polar pole comprises the pull rod supporting assembly and a polar pole mounting table, and the pull rod supporting assembly comprises an assembly base used for being supported on the polar pole mounting table and further comprises a supporting seat used for supporting and positioning; the positioning supporting seat is provided with a positioning groove, and the positioning groove is used for supporting the outer peripheral surface of a sleeve for screwing an insulating pull rod so as to prevent the sleeve from moving in the radial direction of the sleeve in the horizontal direction. One of the positioning supporting seat and the assembly base is provided with a guide column extending in the vertical direction, the other one is provided with a guide hole, and the guide column is matched with the guide hole in a matched and inserted mode; the pull rod supporting assembly further comprises a detachable base plate used for being arranged between the positioning supporting base and the assembly base in a cushioned mode. The pull rod supporting assembly can effectively solve the technical problems that in the prior art, when supporting blocks are arranged, operation is not easy, and universality is poor.

The invention discloses a wire passing structure between an instrument in an oil pipe and an oil sleeve annulus. The wire passing structure comprises a body (1) and a lower connecting pipe (2). The body (1) and the lower connecting pipe (2) are connected in a double mode of threads and a pin (17). A wire passing pipe mounting hole (4) is formed in the body (1). The wire passing pipe mounting hole (4) communicates with the bus through hole (5). A wire passing pipe (3) is mounted in the wire passing pipe mounting hole (4). The method that the wire passing pipe penetrates through the eccentric holes in the body and the lower connecting pipe at the same time is adopted, simple and rapid wire passing between an instrument in an oil pipe and an oil sleeve annulus is achieved, the structural form of the position is greatly simplified, the structural length of the penetrating part is shortened, and site construction operation is facilitated; and the wire passing pipe plays a role in preventing rotation, and the pin further prevents rotation and reinforces the wire passing pipe.

The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a high-integrated double-axis bearing unit. The end face of a double-axis bearing is provided with meshing teeth in the circumferential direction, one side of the double-axis bearing is provided with a paired gear ring matched with the meshing teeth, an included angle is formed between theend face of the dual-axis bearing and the paired gear ring, and the meshing teeth of the double-axis bearing are meshed with the paired gear ring at the intersection of the included angle. By means ofthe high-integrated double-axis bearing unit, a circular bevel gear structure design is integrated to a bearing structure to be used for limiting the circular motion of the meshing gear ring, the rotation stopping effect is achieved, a working mode that a plunger piston does cyclical movement up and down while the meshing gear ring is static in the peripheral direction is achieved, the bearing structure is simplified, and meanwhile, functional operation of the entire bearing unit is ensured.