66results about How to "Limited travel" patented technology

The invention relates to a fixed stroke synchronizer in the technical field of automotive engineering, comprising conjunction gears, synchronizer rings, a gear hub, a gear sleeve, an integrated moduleand a positioning device. The integrated module is arranged on the outer edge of the gear hub and clamped on the gear sleeve; the positioning device is arranged on the inner edge of the gear sleeve which is sleeved on the gear hub; and the two synchronizer rings and the two conjunction gears in the same structures are sequentially sleeved at both sides of the gear sleeve from interior to exteriorin a mirrorsymmetry mode. The synchronizer with the anti-extrusion integrated module simplifies the structure, eliminates shifting failures, even synchronizer failures due to the extrusion of a steelball of the integrated module out of the gear sleeve while shifting and effectively lowers noise generated during shifting.

The invention discloses an electromagnet-type horizontal linear vibration motor. The motor comprises a motor shell, and a bracket is connected to the lower portion of the motor shell. A stator assembly is connected above the bracket, and the stator assembly comprises a circuit board and a coil. The circuit board is connected above the bracket, and the coil is arranged on the circuit board; the coil is connected with the circuit board through spot welding, and a vibrator assembly is arranged in the machine shell; the vibrator assembly comprises a mass block, a cavity is formed in the mass block, magnetic steel is connected to the two ends of the interior of the cavity, the coil is located between the two magnetic steel, and the mass block is connected with the motor shell through a spring piece. The invention further discloses an implementation method of the electromagnet-type horizontal linear vibration motor. According to the invention, an iron core, the coil and a yoke form an electromagnet structure, and the electromagnet structure and the circuit board form a circuit; after an alternating current is connected, an alternating magnetic field generated by the electromagnet interacts with magnetic fields generated by the magnetic steels on the two sides to drive the vibrator assembly to vibrate along the X axis, so the driving force of motor vibration is increased.

The invention provides a workshop vibration damping device for a rail vehicle and the rail vehicle. The workshop vibration damping device comprises a first mounting seat, a second mounting seat, a vibration damper, a connecting rod assembly and a rotating arm. The first mounting seat comprises a first mounting plate and a first supporting seat, wherein the first supporting seat is mounted on one side of the first mounting seat. The second mounting seat comprises a second mounting plate, a second supporting seat and a third supporting seat, wherein the second supporting seat and the third supporting seat are mounted on the second mounting plate. The vibration damper is arranged in parallel between the first mounting plate and the second mounting plate, the second supporting seat is hinged to one end of the vibration damper, and the other end of the vibration damper is hinged to one side of the first supporting seat. One end of the connecting rod assembly is hinged to the other side opposite to the first supporting seat, and the other end of the connecting rod assembly is hinged to one end of the rotating arm. The other end of the connecting rod assembly is hinged to one end of the rotating arm, and the third supporting seat is hinged to the other end of the rotating arm. Transverse stoppers are arranged on both sides, in the rotating direction of the rotating arm, of the third supporting seat so as to limit the rotating angle. According to the workshop vibration damping device for the rail vehicle and the rail vehicle, the relative motion between two adjacent carriages can be attenuated, transverse vibration reduction is realized, and the maximum lateral displacement is limited.

A high-pressure connecting rod type bellows globe valve comprises a valve body, a valve base, a valve deck and a hand wheel. A bellows assembly is arranged inside the valve body and comprises a valve element, a bellows, a bellows welding sleeve, a welding bush and a valve rod. One end of the bellows is connected with the valve rod, and the other end of the bellows is connected with the bellows welding sleeve. A red copper sealing gasket is arranged between the valve body and the bellows welding sleeve. A sealing gasket is arranged between the valve base and the bellows welding sleeve. A filler pressing pad and a filler are sequentially arranged between the valve deck and the valve base. A jacking rod is arranged inside the valve deck. One end of the jacking rod is connected with the valve rod, and the other end of the jacking rod is provided with the hand wheel. The valve rod and the jacking rod are adopted for forming a connecting rod type pull-up device, and meanwhile the valve rod and the jacking rod are protected against corrosion through quadruple sealing of the red copper sealing gasket, the bellows, the sealing gasket and the filler; and assembly and replacement are more convenient, and sealing performance, high temperature resistance, high pressure resistance and corrosion resistance are better.

The invention discloses a five-axis numerical control machining center which comprises a machine frame, side covers, a rear cover, a protective cover, a material supporting device, a working table device, a standing arm device and a spindle device, wherein the side covers are matched with bayonets on the machine frame through buckles and are connected and fastened through bolts; the rear cover is mounted on the machine frame; the protective cover is hinged to the side covers; the material supporting device is arranged on the machine frame in a sliding way; the working table device is fixed on the machine frame; the standing arm device is fixed on the working table device; and the spindle device is fixed on the standing arm device. According to the five-axis numerical control machining center, the supporting stability of the machine frame is improved, and the side covers can be positioned better and fixed firmly when mounted; scraps are convenient to clean, the material supporting device is spaced, and meanwhile movement of the material supporting device is guided better; both horizontal motion and rotation can be realized, the horizontal motion guiding property is good, a fourth-axis sliding seat can be guided initially, the moving accuracy of a fifth-axis sliding seat is high, and heat of a diving motor can be dissipated better.

The invention relates to an oil supply amount limiter device of a diesel oil and natural gas mixed firing engine. The device comprises a connecting seat and an air cylinder connected with the connecting seat. The air cylinder comprises a cylinder body and a piston, a piston limiting check ring is arranged in the cylinder body, adjusting threads are arranged on the outer wall of the cylinder body, an air tap is arranged at one end of the cylinder body, a limiting step is arranged on a piston rod of the piston, the position, arranged in the cylinder body, of the piston rod of the piston is sleeved with a piston resetting spring, one end of the piston resetting spring is fixed to the piston limiting check ring, and the other end of the piston resetting spring is fixed to the piston. The connecting seat is of a through cavity, a piston locating hole supporting the piston rod is formed in the connecting seat, one end of the connecting seat is provided with outer threads and is connected with an engine oil pump in a matched mode, and the other end of the connecting seat is provided with inner threads and is connected with the outer threads on the outer wall of the cylinder body in a matched mode. The device is a diesel oil and natural gas engine oil supply amount limiting device, under the mixed firing mode, due to the fact that the limiting step and the resetting spring are arranged on the piston rod of the piston, the stroke of the piston is effectively limited, and the economical running requirement of the engine is met.

The invention discloses a spare tire fixing device. The spare tire fixing device comprises a spare tire bracket connected with an automobile body and a locking rod in threaded engagement with the spare tire bracket for fixing the spare tire on the spare tire bracket. The spare tire fixing device further comprises a drive device which drives the locking rod to rotate with own axis as an axle. The locking rod can be matched and connected with a power output part of the drive device moveably along the own axis. The power output part of the drive device is connected with the locking rod in an axial sliding manner so that the locking rod does not interfere with the drive device in the axial direction in the process of rotating to lock the spare tire, and thereby, smooth work of the locking rod is ensured.

The invention relates to a angle bracket installation riveting point seat and riveting point device of a photovoltaic module frame. The angle bracket installation riveting point seat of the photovoltaic module frame comprises a supporting core, wherein the supporting core comprises an opening supporting part and an inner cavity supporting part, the opening supporting part can be matched with an opening fastening part of the photovoltaic module frame, and the inner cavity supporting part can be matched with a cavity of the photovoltaic module frame. According to the angle bracket installation riveting point seat, by arranging the opening supporting part and the inner cavity supporting part which are matched with the photovoltaic module frame, support is provided for riveting point processing of the photovoltaic module frame, collapse and deformation of the photovoltaic module frame are prevented, and the qualified rate of finished products of the photovoltaic module frame is improved; the phenomena of slab staggering and angle seams during splicing of long frames and short frames caused by collapse and deformation of the photovoltaic module frame are avoided, and the assembly quality of the photovoltaic module frame is improved; and the locking force of an angle bracket and the photovoltaic module frame is improved, and the assembly firmness and reliability of the photovoltaic module frame and the angle bracket are improved.

The invention discloses a special machine for fine boring of pin holes in crankshafts. The special machine comprises a machine body, wherein a shock pad is arranged at the bottom of the machine body; a boring mechanism for driving a cutter to feed for boring and a clamp for pre-positioning, feeding, positioning and clamping the crankshafts are arranged on the upper portion of the machine body in the length direction; a hydraulic sliding table is arranged below the boring mechanism; a sliding saddle of the hydraulic sliding table is fixedly connected with the boring mechanism and drives the boring mechanism to finish feeding motion; a clamp adjusting mechanism is arranged at the bottom of the clamp; and the bottom of the clamp is fixedly connected with the clamp adjusting mechanism. According to the special machine, pre-positioning, feeding, positioning, clamping, boring and discharging processes of the crankshafts are automatically finished in one working cycle, fine boring of the pin holes and chamfering of hole ends are finished, the production takt is smaller than or equal to 35 seconds per 2 pieces, and the boring precision and the roughness meet grinding requirements; and the machining requirements of high efficiency and high precision of parts are met, the special machine is suitable for mass production, and the crankshafts with different diameters can be machined by adjusting the center distance between the pin holes and the crankshafts.

An electromagnetic valve with a differential pressure resistance valve core is composed of a valve rod, a press cap, a V-shaped sealing ring, a gasket, a sealing pad, a nut, a valve core, a large O-shaped ring, a stifle, a sealing gasket, a valve body, a valve core seat, a small sealing ring, a spring, a small O-shaped ring, a middle O-shaped ring and an electromagnet. The valve core is in a thin-wall cylindrical shape, one end of the valve core is open, the other end is provided with an end face plate, a step connected with the valve rod is positioned in the center of the end face plate, and through holes are arranged on the periphery of the step. A blocking shoulder is arranged at the periphery of the valve core to limit journey of the valve core to improve sealing performance. Under the action of the electromagnet, an upward-moving valve on the valve core is in a close state, pressure water is filled with the valve core and a cavity communicated with the valve core, the sum of axial force stressed on the valve core is nearly zero, pressure difference inside and outside the cylinder wall of the valve core is large, axial force stressed on in the cylinder wall is enough to enable the thin wall of the valve core to expand and deform, and sealing between the valve core and the valve is reliable. When the valve core moves downwards, the valve is open, and water pressure has no side effects on the valve core.

The invention relates to a detection device, in particular to an installation hole detection device which is used for detecting an installation hole of a detected piece in the production and detection process. The installation hole detection device comprises a base with a reference hole, and a detection part with a socket-connecting hole, wherein the axis of the socket-connecting hole is overlapped with the axis of the reference hole. The installation hole detection device additionally comprises a detection pin which can be inserted into the installation hole of the detected piece and the socket-connecting hole, and a zero calibration pin which can be simultaneously inserted into the socket-connecting hole and the reference hole. The detection part is connected onto the base through a sliding component and can freely slide in the horizontal direction. A measuring mechanism which can measure offset of the socket-connecting hole relative to the reference hole in the horizontal direction and can display the measured offset is arranged on the sliding component. The offset of the installation hole in a first measuring direction and a second measuring direction can be measured through the measuring mechanism. The zero calibration of the measuring mechanism is realized through the zero calibration pin. The installation hole detection device has the advantages that the structure is simple and easy to realize, the cost is low and the measurement of the offset of the installation hole can be accurately realized.

The invention relates to a seal baiting valve which comprises a valve seat, a valve body, a bracket, a connecting sleeve, a screw mandrel, a valve core and a hand wheel. The seal baiting valve is characterized in that the baiting valve is internally provided with a seal seat; the seal seat comprises a main body part and a plate part which is formed by the outward extending of the lower end of themain body part; the center of the main body part is provided with a center hole; the main body part is installed in the valve body and is sleeved on the valve core; the outer wall of the upper end ofthe main body part and the inner wall of the lower end of the center hole on the main body part are respectively provided with a seal groove; a seal ring is arranged between the outer wall of the upper part of the main body part and the valve body; two seal rings are arranged between the inner wall of the center hole of the main body part and the valve core; and the plate part is clamped between the valve body and the bracket. The seal baiting valve provided by the invention has the advantages of inventive and reasonable structure, novel seal mode, good sealing property, high safety, long service life and lower manufacturing cost, and is labor-saving and convenient because the hand wheel is adopted.

The embodiment of the invention provides a key mechanism and electronic equipment. The key mechanism comprises a key cap, a conductive base and a lifting assembly which abuts against the key cap and the conductive base, and the lifting assembly descends together in the process that the key cap is pressed from a first position to descend to a second position and accumulates restoring force so as tobe used for pushing the key cap to do ascending motion towards the first position, wherein the height, relative to the conductive base, of the first position meets a specific threshold value; the lifting assembly comprises a first stopping part and a second stopping part, the first stopping part and the second stopping part abut against each other at least when the key cap is located at the firstposition, force is applied to the lifting assembly so as to offset part of the restoring force, and it is guaranteed that when the key cap rises to the first position, the key cap stops rising continuously. The key mechanism provided by the embodiment of the invention can effectively control the height of the key, and supports the light and thin design of the electronic equipment.