48results about How to "Eliminate friction noise" patented technology

An artificial muscle driven bionic moving mechanism is composed of pulse power wires, power supply, controller connected between said pulse power wine and power supply, skeleton consisting of one or more vertebrae with pores, artificial muscles made of memory alloy or electrosensitive polymer and connected between two pores on vertebrae, and deformation inductor.

The invention relates to hardware door lock accessories, and provides a noiseless lock with magnets. The noiseless lock with the magnets is provided with a box bottom assembly, a box cover, a rotation block, a lever-handle sleeve, a tension spring, a driving block, a reset spring, a lock tongue assembly and a cover buckling assembly. The front end of the box bottom assembly is provided with a lock tongue hole, and the inner portion of the box bottom assembly is provided with a rotation piece pivot, a lever-handle sleeve embedding hole, a lock tongue guide groove, a driving guide groove and a fixed tension spring embedded column. The lock tongue magnet is arranged in a lock tongue and the box buckling magnet is arranged in the box buckling assembly. The lock tongue assembly is embedded into the lock tongue guide groove, the driving block is embedded into the driving guide groove, the lever-handle sleeve is embedded into the lever-handle sleeve embedding hole and the rotation block is embedded on the rotation pivot through a pivoting hole in the middle of the rotation block. The noiseless lock realizes the function that under the attraction effect of the magnets, locking is realized as the lock tongue stretches out directly, achieves the effect that noise generated due to the fact that collision and friction are generated between the inclined lock tongue and the cover buckling assembly when a door is closed is eliminated and achieves a better silencing effect.

The invention provides a quick wax spray rubber composition. The composition is characterized by comprising the following components in parts by weight: 100 parts of rubber, 4-6 parts of organic active agent, 0.5-1.5 parts of inorganic active agent, 2-4 parts of anti-aging agent, 5-8 parts of paraffin, 2-3 parts of processing aid, 20-80 parts of reinforcing agent, 5-15 parts of plasticizer, 1.8-2.5 parts of accelerator and 1.5-2 parts of vulcanizing agent. The invention also provides a preparation method of the quick wax spray rubber composition. The method is characterized by comprising the following steps of: making rubber and parking; sulphurating; and finally, parking. In the invention, a paraffin layer can be quickly adhered on the surface of the rubber within a short time, and the paraffin can even be quickly sprayed out of the interior of a rubber product in a slightly dynamic state so as to better prevent aging by ozone, clear up friction abnormal sound on the surface of the rubber, keep a self-lubricating function and reduce the friction coefficient, and moreover, the anti-aging agent cannot be taken out of the surface so as to avoid blushing and over quick aging.

The invention relates to a remote numerical control multipurpose uphill and downhill trolley for an automated conveying production line, which comprises a trolley capable of running on a flat road or an uphill ramp and a downhill ramp and five trolley lines additionally arranged on one side of a track. An electric cabinet frequency converter, a hanging fixture and the like are arranged on the trolley and are communicated with a master control cabinet through the trolley lines and a cable. In the remote numerical control multipurpose uphill and downhill trolley, the technology of numerical control and half-duplex communication is adopted particularly, so that the trolley can be commanded manually or automatically by PLC programs to complete complex actions such as quick and slow advance and retreat, lifting, release, clamping and the like within the range of 3,000 meters; the technology of automatic frequency control of motor speed is also adopted, so that the trolley can move on the uphill ramp and the downhill ramp or a curve road at a low speed and move on the flat road at a high speed; and the technology of dual braking and electric speed limit is adopted to ensure the safety of the trolley on the uphill ramp and the downhill ramp. The remote numerical control multipurpose uphill and downhill trolley provides novel three-dimensional space automated material conveying equipment with omnipotency, high efficiency and low cost for manufacturers such as automobiles, engines, machinofacture and the like.

A multi-port energy conversion device comprises a low-speed-side rotor composed of a low-speed-side rotor yoke (1) and a low-speed-side permanent magnet (2) on the inner side of the low-speed-side rotor yoke (1), a high-speed-side rotor composed of a high-speed-side rotor yoke (6) and a high-speed-side permanent magnet (5) on the inner side of the high-speed-side rotor yoke (6) and a magnetism regulating mechanism composed of an armature winding (4) and magnetism regulating iron blocks (3) located on the two sides of the armature winding (4). The low-speed-side rotor and the high-speed-side rotor are located on the two sides of the magnetism regulating mechanism respectively, air gaps are reserved between the low-speed-side rotor and the magnetism regulating mechanism and between the high-speed-side rotor and the magnetism regulating mechanism, and the low-speed-side rotor, the high-speed-side rotor and the magnetism regulating mechanism are coaxial. The low-speed-side rotor and the high-speed-side rotor are connected with a low-speed rotating shaft and a high-speed rotating shaft respectively, and the rotating shafts can freely rotate. The conversion device is provided with two mechanical ports and an electric port, and multi-directional multi-output conversion of mechanical energy and electric energy is achieved.

The invention relates to the technical field of motors, in particular to a planar separated motor applied to a wall breaking machine. The planar separated motor comprises a planar separated motor rotor and a planar separated motor stator, wherein the planar separated motor rotor is arranged in a hollow cavity at the bottom of a stirring cup of the wall breaking machine and is connected with a toolbit component arranged in the stirring cup as a whole through a shaft; the planar separated motor stator is arranged in a hollow cavity of a base of the wall breaking machine and is electrically connected with a system control component arranged in the base; a cup bottom cover is fixed at the bottom of the stirring cup; a U-shaped seat is arranged at the top of the base; and the stirring cup canbe pushed into the U-shaped seat and taken out of the U-shaped seat through the cup bottom cover in the horizontal direction, thereby achieving allocation positioning and separating of the planar separated motor rotor and the planar separated motor stator. By adopting the structure arrangement, compared with a traditional motor, the planar separated motor has the advantages that the planar separated motor is free of a commutator, an electric brush or a coupling, so that noise of friction and collision caused by these factors are eliminated, the service life of the motor is greatly prolonged and the operation is more convenient.

The invention discloses a magnetic levitation guide device of an elevator, which is embedded into guide rails, and a permanent magnetic field and an electromagnetic field are generated between the magnetic levitation guide device and the guide rails to allow a car to be levitated on the guide rails. The car is levitated on the guide rails by adjusting the permanent magnetic field and the electromagnetic field between the guide rails and the guide device, so that the roots of rock and friction noise of the elevator are eliminated, true undamaged control is achieved, the control difficulty is reduced, the taking comfort of the elevator is improved greatly, and in addition, the utilization ratio of a permanent magnet is increased due to adjustable design of the permanent magnet.

The invention discloses an inside-door lock. The inside-door lock comprises a box body, a latch bolt device, a dead bolt device and a reversing device, wherein the latch bolt device, the dead bolt device and the reversing device are arranged in the box body; the latch bolt device comprises a latch bolt body and a latch bolt shifting block used for retracting the latch bolt body, the dead bolt device comprises a dead bolt body and a dead bolt shifting block used for retracting the dead bolt body, and the reversing device is used for rotating the latch bolt shifting block; the latch bolt shifting block is provided with a first shifting arm, the dead bolt shifting block is provided with a second shifting arm, and the first shifting arm abuts against the second shifting arm; when the latch bolt shifting block rotates, the first shifting arm of the latch bolt shifting block shifts the second shifting arm of the dead bolt shifting block to enable the dead bolt body and the latch bolt body to be retracted at the same time; the latch bolt shifting block is provided with a knob rotary block, and the reversing device is fixedly connected with a handle shifting block. The inside-door lock has the beneficial effects the steering is flexible, adaptability is high, and the internal structure is simplified.

The invention discloses a rotary locking mechanism for a chair. The rotary locking mechanism comprises a locking mechanism and at least one locking hole, wherein the locking mechanism is arranged on arotary disk in a chair rotating mechanism, and the at least one locking hole is arranged on the outer periphery of a fixed disk in the chair rotating mechanism. The rotary locking mechanism is characterized in that the locking mechanism comprises a lock support fixed to the rotary disk and two or above locking pins horizontally and movably arranged in the lock support; the first end of each locking pin is of a conical columnar structure; the first ends of the locking pins are inserted into the locking holes, the conical columnar structures of the first ends of the locking pins are wedged withthe locking holes, and zero clearance locking is achieved. The rotary locking mechanism disclosed by the invention eliminates fit clearance of the rotating mechanism after locking, so that product grade is improved, and user experience is improved. A locking part is prevented from generating scraping noise with the fixed disk even if an operator loosens an adjusting handle in an adjusting process. As abrasion is eliminated, the product service life is prolonged.

Provided is a dust lip for a shock absorber, which is provided between a dust cover and a piston rod to prevent foreign substances from flowing into an oil sealing unit in twice and eliminate noise generated by mutual interference between a piston rod and a bumper rubber. The dust lip for the shock absorber includes: a piston rod; a base shell through which a part of the piston rod passes such that the piston rod is exposed to one side; a cap member covering one end of the base shell through which the piston rod passes; a bumper rubber attached to an outer periphery of the exposed portion of the piston rod; and a dust lip provided between the piston rod and the cap member to remove a gap between the piston rod and the cap member.

A simple-to-assemble massaging chair comprises a massaging chair body frame and a small leg frame. A hanging lug upper cover, a hanging lug base, a rotating pin and small leg fixing screws are arranged on the massaging chair body frame, a rotating shaft, a plastic sleeve and fixing screws are arranged on the small leg frame, the hanging lug base is welded on the massaging chair body frame, the hanging lug upper cover is hinged on the hanging lug base through the rotating pin, the rotating shaft is welded on the small leg frame, the plastic sleeve is arranged on the rotating shaft in a sleeved manner and firmly fixed through the fixing screws, an opening capable of containing the plastic sleeve is formed between the hanging lug upper cover and the hanging lug base, and the hanging lug upper cover and the hanging lug base are fixed with each other by the small leg fixing screws. Through modularized assembling, parts like small legs and handrails are all assembled on an added assembling frame after previous-stage processing is completed, so that simple structure, quickness and high efficiency in assembling are needed; due to the plastic sleeve, friction noise among metal materials during rotating can be eliminated.

The invention discloses a tire with friction noise eliminating and damping functions. The tire comprises a tire inner cavity and a tire outer wall, wherein the tire inner cavity comprises a movable bearing A and a movable bearing B, and springs are arranged between the movable bearing A and the movable bearing B; the tire outer wall is provided with inwards concave silencing grooves, and wrinkles are formed in the silencing grooves and are formed by alternatively arranging convex parts and concave parts. The tire has the advantages that the damping function is realized, and the maintenance and replacement are convenient; while the friction force is guaranteed, the noise reducing function is also realized; the comfortability is higher, and the riding is comfortable.

The invention relates to a supporting structure for a plastic part hot melting welding column. The supporting structure is fixedly connected with a turning edge of a matching part. The supporting structure is composed of a supporting platform, a column platform and reinforcing ribs, wherein the supporting platform is composed of a straight stretching section and an outwards-extending section which are connected to form a whole body; the column platform is fixedly arranged in the center of the outwards-extending section of the supporting platform; the column platform is composed of a cylinder wall and an upper cover connected with the cylinder wall; a cavity structure is formed by the cylinder wall and the upper cover; a circular hole is formed in the center of the upper cover; the lower surface of the upper cover is vertical to the axis of a cylinder defined by the cylinder wall; the reinforcing ribs are fixedly connected with the left and right sides of the upper surface of the outwards-extending section; the reinforcing ribs extend to the outer appearance of the matching part from the front end of the outwards-extending section of the supporting platform and are connected with the straight stretching section of the outwards-extending section, the lower surface of the turning edge of the matching part and the outer appearance of the matching part. According to the supporting structure for the plastic part hot melting welding column, the contact area between the welding column and the supporting structure is enlarged and the supporting strength is improved; the supporting structure has the good assembling adaptability on a product with the large appearance curvature change.

The invention discloses a flexible connecting device for generator rotor conducting rods. The flexible connecting device comprises connecting copper bars. The connecting copper bars are V-shaped flexible connecting copper bars. The number of the V-shaped flexible connecting copper bars is two. The two V-shaped flexible connecting copper bars are symmetrically arranged in an exciter shaft or a collector ring shaft. One ends of the connecting copper bars are fit with the conducting rods in the exciter shaft or the collector ring shaft, and the other ends of the connecting copper bars are fit with the conducting rods in a generator shaft. Operating holes and ventilating holes at different radial positions are arranged on the exciter shaft or the collector ring shaft. The flexible connecting device for generator rotor conducting rods has the advantages that the assembling process is simple and the assembling accuracy and the operating difficulty are reduced; the flexible structures of the connecting copper bars can absorb deformation caused by the heating of the conducting rods at the two ends and harmful thermal stress is eliminated; the air friction loss and the noise are reduced, the device is not apt to be polluted by foreign matters and the operation reliability is improved; and the ventilating holes and the operating holes can jointly form a cooling air duct to ventilate and cool the V-shaped connecting copper bars and the conducting rods and take the effects of reducing temperature and improving current conducting performance.

The invention discloses a preparation method of an antifriction gasket for an automobile driving shaft assembly. The preparation method comprises the following steps of a preparation method of a gasket framework and a preparation method of a surface polytetrafluoroethylene wear-resistant layer, wherein wear-resistant particles comprise, by weight, 50-60 parts of quartz sand, 20-30 parts of brown fused alumina, 10-15 parts of molybdenum disulfide, 1-5 parts of graphene, 2-3 parts of diamond, 0.1-0.5 parts of zirconium oxide and 2-3 parts of aluminum oxide. According to the preparation method ofthe obtained antifriction gasket for the automobile drive shaft assembly, the antifriction gasket is arranged at the position of the matching part of an outer ball cage, so that the starting abnormalsound of a vehicle is effectively eliminated, and the using performance of an automobile is improved. Meanwhile, the surface polytetrafluoroethylene coating has the functions of wear resistance and noise elimination, and the automobile starting abnormal sound is eliminated.

The invention discloses an electronic device, which comprises a shell and a driven part, wherein the shell is provided with an opening; the driven part comprises a first support and a first magnetic piece; the first support is provided with a first side face and a second side face which are arranged back to back in the first direction, the first direction is perpendicular to the axis of the opening, the first magnetic piece is arranged on the first support, and the first magnetic piece is located between the first side face and the second side face; the the second magnetic piece is arranged inthe shell; the magnetism of at least one of the first magnetic piece and the second magnetic piece is adjustable, so that the driven part extends out of the shell from the opening or retracts into the shell from the opening under the magnetic action of the first magnetic piece and the second magnetic piece. According to the scheme, the problem of low reliability of the electronic device can be solved.

The invention discloses a connection structure of an automobile steering system, which is characterized in that an input shaft is sleeved in an input shaft sleeve and then inserted into a universal joint, a bolt hole is arranged on the universal joint, and a bolt is adopted for fixing at the position of the bolt hole. By means of the structure, the connection structure has the advantages of utilizing the shaft sleeve made of rubber materials and arranged at the input end to compensate gap error between the universal joint and the input shaft of a steering wheel in the processing process, greatly improving friction between the universal joint and the input shaft and removing metal friction noise.

The invention discloses a novel PV (pressure and volume) test detection device and a novel PV test detection method. A rudder propeller base is integrated with a stern part of a ship body in design according to a pre-outfitting requirement, a working allowance for milling is reserved on an upper plane of the rudder propeller base, alignment and positioning are carried out by adopting the processing method disclosed by the invention after a main ship body is folded, and the processing device finishes milling for the upper plane and a seal groove and drilling for mounting holes on site under deck.

The invention discloses a dual-machine two-dimensional integrated three-phase asynchronous hub motor and a frequency conversion driving control system. The motor consists of two three-phase asynchronous frequency conversion motors with the same structure; and two integrated modes and three operating modes are adopted by left and right sides of a rear-wheel dual machine and front and rear wheels of the dual machine respectively. The motor has excellent working environment adaptability and energy-saving efficiency and is combined with a frequency conversion driving controller so as to form a novel two-wheel electric vehicle electrically-driven system; and the motor and the system have the advantages of frequency conversion and energy conservation, regenerative brake energy conservation, replacement of motor reverse brake from mechanical friction brake, and the like.

A micro suspension panel mounting structure achieving strong vibration feedback comprises elastic energy absorption screw gaskets capable of being mounted on screws in a sleeving manner. Each elasticenergy absorption screw gasket is of a gasket structure, the diameters of the inner rings of the elastic energy absorption screw gaskets are matched with the outer diameters of screw rod parts of thescrews, and the diameters of the outer rings of the elastic energy absorption screw gaskets are matched with the outer diameters of screw head parts of the screws. Due to the fact that the elastic energy absorption screw gaskets are made of elastic energy absorption materials, the elastic energy absorption screw gaskets can form relative positions between a panel and an opponent part to achieve motion, and the panel is in a micro suspension state to eliminate abnormal sounds. Due to the fact that the elastic energy absorption screw gaskets have the stretching and contracting trace displacementtendency, an energy absorption function can be achieved on colliding and impacting, mechanical energy of a vibration device can be converted into heat energy to be consumed, and then abnormal soundsare eliminated. Due to the fact that the panel is in the micro suspension state, the vibration device only loads the panel, the vibration amplitude fed back by the panel is larger, and the reality degree and the experience degree of intelligent touch are increased. The micro suspension panel mounting structure is suitable for automobiles.

The invention relates to the technical field of an indoor decoration material, in particular to a building block type water passing floor board. The building block type water passing floor board comprises water passing boards and a floor board surface layer, wherein each water passing board is provided with a first water passing passage; the two end opening parts of each water passing board are fixedly provided with water passing sealing assemblies; each water passing sealing assembly is provided with a second water passing passage; the at least two water passing boards are connected together through sealing connecting pipes provided with sealing connecting plates; the water passing boards positioned at the two ends of the building block type water passing floor board are respectively connected with end part connecting elements through sealing connecting pipes; each end part connecting element is provided with a longitudinal pipeline and a transverse pipeline; and the transverse pipelines, the longitudinal pipelines, the sealing connecting pipes, the first water passing passages and the second water passing passages are mutually communicated. The building block type water passing floor board solves the technical problem that the length of the existing air conditioning floor board cannot be flexibly configured. Under the condition of maintaining the advantages of the air conditioning floor board with the replaceable surface layer, the building block type water passing floor board also has the advantages that the production, the transportation and the installation are convenient; deformation cannot easily occur; the noise is low; and the cost is low, and the like.

The invention discloses a method for eliminating friction noise of an electronic stethoscope. The method comprises the following step: S1 dividing an acquired mixed signal into n0 window signals for the first time, finding out the amplitude of each window signal, taking the absolute value, enabling the maximum value to be A_max, and recording the position i, j, wherein i is the mark number of thewindow, i=0, 1, 2..., j is the position corresponding to waveform data of the window, and j=0, 1, 2.... According to the method, the friction noise generated between an auscultation head and the garment is eliminated based on the period average energy proportion algorithm, the friction noise generated between the auscultation head and a garment can be eliminated, and thus heart sound signals without friction noise are obtained; and while the friction noise signals are eliminated, the integrity of the heart sound signals is guaranteed.

The invention discloses a pipe fixing device for a pipe welding machine. The pipe fixing device comprises a fixed base; bumps are fixedly connected to the bottoms of the left side surface and the right side surface of the fixed base; a fixed clamping block is fixedly connected to the upper surface of the fixed base; electric push rods are fixedly connected to the left side and the right side of the upper surface of the fixed base by means of fixed blocks; connecting blocks are fixedly connected to the top ends of the two electric push rods; and a movable seat is fixedly connected between the opposite side surfaces of the two connecting blocks. Through the mutual cooperation of the fixed base, the fixed clamping block, the electric push rods, the connecting blocks, the movable seat, a movable groove, sliding rods, movable blocks, strong springs and a movable clamping block, a welding pipe is flexibly clamped, the surface of the clamping pipe is effectively prevented from being damaged,the problem that in an existing pipe fixing device for a pipe welding machine, the surface of the pipe is damaged due to rigid clamping is solved; and through the mutual cooperation of noise reductionrings, an elastic noise reduction gasket and protecting friction layers, the problem that when a fixing device is used, high noise is generated is solved.

The invention relates to hardware door lock accessories, and provides a noiseless lock with magnets. The noiseless lock with the magnets is provided with a box bottom assembly, a box cover, a rotation block, a lever-handle sleeve, a tension spring, a driving block, a reset spring, a lock tongue assembly and a cover buckling assembly. The front end of the box bottom assembly is provided with a lock tongue hole, and the inner portion of the box bottom assembly is provided with a rotation piece pivot, a lever-handle sleeve embedding hole, a lock tongue guide groove, a driving guide groove and a fixed tension spring embedded column. The lock tongue magnet is arranged in a lock tongue and the box buckling magnet is arranged in the box buckling assembly. The lock tongue assembly is embedded into the lock tongue guide groove, the driving block is embedded into the driving guide groove, the lever-handle sleeve is embedded into the lever-handle sleeve embedding hole and the rotation block is embedded on the rotation pivot through a pivoting hole in the middle of the rotation block. The noiseless lock realizes the function that under the attraction effect of the magnets, locking is realized as the lock tongue stretches out directly, achieves the effect that noise generated due to the fact that collision and friction are generated between the inclined lock tongue and the cover buckling assembly when a door is closed is eliminated and achieves a better silencing effect.

The invention discloses an external connection structure of a shock absorber. The external connection structure comprises an upper plate, a lower plate, vibration isolation rubber, studs and an innersleeve. A first through hole and a plurality of second through holes are formed in the upper plate, and the multiple second through holes are annularly formed in the circumferential direction of the first through hole at intervals. The lower plate is fixedly attached to the bottom face of the upper plate. A containing column is arranged on the bottom face of the lower plate in a protruding mode. Acontaining groove is formed in the axis position of the containing column in a concave mode. A third through hole is formed in the bottom face of the containing groove in a penetrating mode, and thevibration isolation rubber is contained in the containing groove. The inner sleeve is fixedly embedded in the vibration isolation rubber. A plurality of fourth through holes are formed in the lower plate and further located in the circumferential direction of the containing groove in a penetrating mode, and the studs sequentially penetrate through the fourth through holes and the second through holes and then are connected with an automobile body metal plate. Compared with the prior art, the vibration isolation rubber and the automobile body metal plate do not make relative torsional motion, abrasion of the vibration isolation rubber is reduced, and the service life is prolonged.

The invention relates to the technical field of an indoor decoration material, in particular to a building block type water passing floor board. The building block type water passing floor board comprises water passing boards and a floor board surface layer, wherein each water passing board is provided with a first water passing passage; the two end opening parts of each water passing board are fixedly provided with water passing sealing assemblies; each water passing sealing assembly is provided with a second water passing passage; the at least two water passing boards are connected together through sealing connecting pipes provided with sealing connecting plates; the water passing boards positioned at the two ends of the building block type water passing floor board are respectively connected with end part connecting elements through sealing connecting pipes; each end part connecting element is provided with a longitudinal pipeline and a transverse pipeline; and the transverse pipelines, the longitudinal pipelines, the sealing connecting pipes, the first water passing passages and the second water passing passages are mutually communicated. The building block type water passing floor board solves the technical problem that the length of the existing air conditioning floor board cannot be flexibly configured. Under the condition of maintaining the advantages of the air conditioning floor board with the replaceable surface layer, the building block type water passing floor board also has the advantages that the production, the transportation and the installation are convenient; deformation cannot easily occur; the noise is low; and the cost is low, and the like.

A micro-suspension panel installation structure with strong vibration feedback, including an elastic energy-absorbing screw pad that can be set on the screw. The elastic energy-absorbing screw pad is a washer structure. The outer ring diameter of the elastic energy-absorbing screw pad matches the outer diameter of the screw head part of the screw. Since the elastic energy-absorbing screw pad is made of elastic energy-absorbing material, the elastic energy-absorbing screw pad can make the relative position between the panel and the opponent move, so that the panel is in a slightly suspended state to eliminate abnormal noise, and due to the elastic energy absorption The screw pad has a slight displacement tendency of expansion and contraction, so it can absorb energy from the impact, so that the mechanical energy of the vibration device can be converted into heat energy and consumed, thereby eliminating abnormal noise; because the panel is in a state of micro suspension, Therefore, the load of the vibration device is only the panel, so that the amplitude of feedback through the panel will be larger, increasing the authenticity and experience of smart touch. Suitable for cars.