209results about How to "Play a damping role" patented technology

The invention discloses a robot reducer transmission performance comprehensive testing device. The robot reducer transmission performance comprehensive testing device comprises a base (14), wherein a drive motor (1), a first coupling (2), a reducer input end torque angular displacement sensor (3), a second coupling (4), a to-be-tested reducer (5), a third coupling (6), a reducer output end torque angular displacement sensor (7), a fourth coupling (8) and a brake (9) are arranged on the base (14), share the same axis on the level direction, and are connected in sequence, and the drive motor (1), the reducer input end torque angular displacement sensor (3), the to-be-tested reducer (5) and the reducer output end torque angular displacement sensor (7) are respectively arranged on the base (14) through a motor support (10), a first support (11), a to-be-tested reducer support (12) and a second support (13). The robot reducer transmission performance comprehensive testing device meets the requirements of transmission performance tests such as high precision composite roller movable teeth transmission reducer ratio, return difference and efficiency, and thus testing efficiency and testing accuracy are high.

The invention discloses a high-performance powder metallurgy warm-pressing driven gear and a production method thereof, belonging to the field of a powder metallurgy technique. The high-performance powder metallurgy warm-pressing driven gear is characterized in that the high-performance powder metallurgy warm-pressing driven gear is mainly produced by the following components proportioning by weight: 100 parts of water atomization iron powder, 1.5 to 2 parts of copper powder, 0.8 to 1 part of nickel powder, 0.8 to 1 part of lubricant and 0.8 to 1 part of graphite powder. The production method comprises the following steps that: the materials are manufactured into high-alloy warm-pressing powder by stirring, the high-alloy warm-pressing powder is uniformly heated to 130 DEG C by a warm-pressing heating system, is delivered into a mould rack and a mould which are heated to 150 DEG C, and is pressed and manufactured into a driven gear blank with high density, and then the high-performance powder metallurgy warm-pressing driven gear is manufactured by the procedures of sintering, gear lapping with corundum, high-frequency hardening, inner bore finish machining, and the like. The high-performance powder metallurgy warm-pressing driven gear and the production method thereof reduce the running noise, reduce the production cost by 43%, save energy by 50%, reduce the labour cost by 50%, increase the service life by more than one time and have higher economic benefits and social benefits.

The invention discloses an audio frequency device with a graphene composite sound film. The audio frequency device is provided with a vibration sound film, a shell frame, a drive circuit or a sensing circuit, wherein the shell frame defines a cavity in which the vibration sound film vibrates, and the drive circuit or the sensing circuit is used for driving the sound film to produce sound through vibration or sensing the vibration of the vibration sound film so as to output a signal. The vibration sound film of the audio frequency device is a composite sound film and is formed by compositing a fiber meshy graphene layer and a thin polymer film. By means of the graphene composite sound film, the thickness and quality of the composite sound film can be remarkably reduced, the acoustical frequency response characteristic of the sound film is improved, and the sensitivity and fidelity of the audio frequency device are improved. The audio frequency device is convenient to install, high in durability and reliability and low in manufacture cost, and tone quality and tone are greatly improved on the premise that high frequency response characteristic is kept.

A class of bearings, each of them can be used as a connecter to connect two parts in a structural system and as a supporter to transfer loads from one part to another, for examples, gravity of a superstructure to a substructure in a bridge or a building, or that of a machine to its foundation. While performing load transmission, it is able to reduce the transmission of transient vibrations between connected two structural parts and preserve the integrity of entire structural system; for examples, to protect a bridge's structural integrity when either an earthquake strikes its pier and foundation or a tsunami hits its superstructure or both occur simultaneously.

The invention discloses a piloted type pressure reducing valve and solves the problem that a pilot valve of an existing piloted type pressure reducing valve is easy to damage due to impact and large in noise. A differential type pilot valve is adopted in the piloted type pressure reducing valve, a first cavity communicated with an oil inlet is arranged on the inner side of the pilot valve, a second cavity communicated with a throttle hole is arranged on the outer side of the pilot valve, a pilot valve spool is arranged in a pilot valve seat, a conical portion of the pilot valve spool is arranged in the first cavity and connected with a buffering spring, a pressure regulating spring is arranged on the second cavity side and connected with the pilot valve seat, and a pilot valve gap, a radial through hole and an oil outlet channel between the pilot valve seat and the pilot valve spool form an opened oil discharging channel of the pilot valve. Via the differential type pilot valve, the inverted pilot valve spool, the buffering spring and the pilot valve seat which is capable of moving axially, and via damping effect of the pilot valve spool and the pilot valve throttle hole, impact force when the pilot valve is closed is reduced, the pilot valve is enabled to be always in stable state, so that the piloted type pressure reducing valve has the advantages of small impact, long service life, stability and low noise.

The invention discloses a sealing device of a fan bearing seat. The sealing device comprises a main shaft, wherein the main shaft is equipped with a bearing seat, a bearing, a bearing seat end cover and a gland in sequence; a felt is arranged on the bearing seat end cover; a first space is reversed between the bearing and the bearing seat end cover; an oil retainer and an oil catcher are arranged in the first space; the inner hole of the oil retainer is provided with a conical degree; a second space is reversed between the oil retainer and the oil catcher; and the first space is communicated with the second space. According to the invention, the whole space of the sealing device of the fan bearing seat is of a labyrinth shape; a great quantity of liquid oil threw out by the bearing can firstly be caught by the oil catcher, a small quantity of liquid oil flows past from the second space, however, the oil retainer can play the damping effect on the liquid oil and the felt can play the third sealing effect, so the sealing effect is greatly improved, the phenomenon of oil leakage of the fan bearing seat is avoided, the production cost is saved and the production efficiency is improved.

The invention relates to a clamping sleeve type metal sealing pipe joint and a using method thereof. The clamping sleeve type metal sealing pipe joint comprises a joint body, a clamping sleeve and a nut, wherein the joint body and the nut are in threaded connection, the clamping sleeve is arranged between the joint body and the nut, the clamping sleeve is a metal piece, the clamping sleeve is provided with a front cutting edge and a rear cutting edge, the front end of the clamping sleeve is matched with a conical surface of the joint body, the rear end of the clamping sleeve is matched with a conical surface of the inner surface of the nut, and sealing is realized by enabling the front cutting edge and the rear cutting edge to be cut in the outer wall of a pipe. According to the clamping sleeve type metal sealing pipe joint disclosed by the invention, the structure of two cutting edges is adopted, the sealing performance is more reliable, the anti-shock performance and the anti-vibration performance are more excellent, and the service life is long.

The invention discloses a bracing wire suppression vibration device. The bracing wire suppression vibration device includes a stand positioned on the outer wall of the top of a wind tunnel, a stand column positioned in the wind tunnel, and a cantilever perpendicularly connected to the stand column and positioned in the wind tunnel; one end of the cantilever is connected to a fulcrum bar supporting a model; one end of a steel cable A is fixedly connected to the fulcrum bar connected to the cantilever, and the other end of the steel cable A passes through a movable pulley in the wind tunnel, then passes through the top of the wind tunnel and a fixed pulley on the fulcrum bar, and is connected to a weight; the movable pulley is fixedly connected to a steel cable B, and one end of the steel cable B is fixedly connected to the cantilever. The bracing wire suppression vibration device can change an inherent frequency of a system by increasing or decreasing weight so as to effectively avoid a resonance region, and meanwhile, the load of a super attack angle support system is reduced. Frictional resistance between a bracing wire and the pulleys plays a damping effect to suppress vibration.

The invention discloses a differential type pilot overflow valve to overcome the defects that impact between a pilot valve core and a pilot valve seat in the conventional pilot overflow valve is large, and the conventional pilot overflow valve is easy to damage, short in service life and large in noise. According to the pilot overflow valve, a differential pilot valve is arranged in a pilot valve cavity; the inner side of the pilot valve is provided with a first accommodation cavity which is communicated with an oil inlet, and the outer side of the pilot valve is provided with a second accommodation cavity communicated with the first accommodation cavity through a throttling hole; the pilot valve core is arranged in the pilot valve seat, and a sealing cone of the pilot valve core is positioned in the first accommodation cavity and is connected with a first buffer spring; the side of the second accommodation cavity is provided with a pressure regulating spring connected with the pilot valve seat; and a pilot valve gap, a radial through hole and an oil outlet between the pilot valve seat and the pilot valve core form a pilot valve opening leakage oil channel. By the damping effect of the differential pilot valve, the inverse pilot valve core, the buffer spring, the axial movable pilot valve, the pilot valve core and the pilot valve gap, the impact force generated when the pilot valve is opened can be reduced, and the pilot valve core is always in the stable state, so that the overflow valve has the advantages of small impact, long service life, stability and low noise.

The invention belongs to the technical field of rehabilitation therapy instruments, and particularly relates to a damper and a walking aid robot. The damper is characterized in that a hydraulic rod stretches into a hydraulic cylinder from the tail end of the hydraulic cylinder; a seal ring connected with an inner surface of the hydraulic cylinder is arranged on the inner end of the hydraulic rod;a free piston and a first compression spring are arranged between the seal ring and a fixed end of the hydraulic cylinder; two ends of the first compression spring press against the free piston and the fixed end; the free piston and the seal ring jointly divide a space in the hydraulic cylinder into a first cavity, a second cavity and a third cavity; liquids are arranged in the second cavity and the third cavity; a first through hole communicating with the second cavity and the third cavity is formed in the seal ring; and a flow adjusting device for controlling the flow velocity of the liquidpassing through the first through hole is arranged on the hydraulic rod. The damper provided by the invention has adjustable damping, provides a larger support force, and can mutually transform gravitational potential energy of a body and elastic potential energy of the first spring. The damper provided by the invention has the characteristics of small energy consumption and simple structure.

The invention discloses an unfolding locking mechanism based on a torsion spring. With the torsion spring as a power source, the mechanism is unfolded and locked. By adjusting the mounting position ofthe torsion spring, the unfolding locking mechanism based on the torsion spring can be not only used as the power source but also have a damping effect; and the unfolding locking mechanism based on the torsion spring has the advantages of small volume, light weight and high reliability.

The invention discloses a suspension damping device for an engineering truck seat. The suspension damping device comprises a base framework welded body, a sliding rail connecting plate, a first rotating sheet, a second rotating sheet, a first rotary connecting sheet, a first connecting shaft, a second connecting shaft and a compression spring, wherein the sliding rail connecting plate is arranged below the base framework welded body, one end of the first rotating sheet or one end of the second rotating piece is connected with the sliding rail connecting plate, the first rotating sheet is fixed to one end of the first connecting shaft, the second rotating sheet is fixed to one end of the second connecting shaft, the first rotary connecting sheet is connected with the first rotating sheet and the second rotating sheet, the other end of the first rotating sheet is connected with the other end of the second rotating sheet through the compression spring, both the first connecting shaft and the second connecting shaft are arranged on the base framework welded body, the first connecting shaft is parallel to the second connecting shaft, and the first connecting shaft or the second connecting shaft is of an arched structure. The suspension damping device is simple in the structure, and can achieve suspension damping of the engineering truck seat conveniently and improve the comfortableness of an operator.

The invention relates to the technical field of transport devices, in particular to a shared bicycle transport device which comprises a transport vehicle. The shared bicycle transport device is characterized in that dampers which correspond to hydraulic cylinders are arranged on third fixing hinge pin groups, sliders are arranged on support frames, a fixing mechanism is jointly connected to the upper ends of rockers and the upper ends of the hydraulic cylinders and comprises side oblique plates, the side oblique plates are connected with the tops of the rockers and the tops of the hydraulic cylinders, the middles of the lower ends of the side oblique plates are slidably connected with the sliders, at least three handlebar fixing frames are arranged at the upper end of each side oblique plate, the middle handlebar fixing frame at the upper end of each side oblique plate is staggered from the other handlebar fixing frames at the upper end of the side oblique plate, shared bicycles are arranged on the handlebar fixing frames, and rear seat fixing blocks for constraining the shared bicycles are arranged on the side oblique plates. Compared with the prior art, the shared bicycle transport device has the advantages that transport management on the shared bicycles can be greatly improved, loading and unloading can be facilitated, accordingly, labor of workers can be relieved, the workefficiency can be improved, and the shared bicycle transport device is extremely high in practicality.

The invention relates to a third-order resistance wave base high-pass filter device and an electric power supply system with same. The device can be used for a rail traction power supply network, a common direct-current, single-phase and three-phase power supply systems. The filter device is formed by connecting a capacitor C2 with an electric reactor L in series, with a capacitor C1 in parallel and finally with a resistor R in series. In a rail traction power supply system, the third-order resistance wave base high-pass filter device is connected between a contact line T and the ground; in a single-phase power supply system, the third-order resistance wave base high-pass filter device is connected between a phase line and a null line; in a three-phase power supply system, the three filter devices are connected with three phase lines in the system by adopting a Y-type connecting method or a triangular mode. The device can be used for effectively avoiding external exchange of reactive power, and avoiding parameter changes due to inductance saturation caused by direct-current components due to various reasons in the line with the existence of the capacitor C2, and does not produce interferences on base wave power supply network parameters. Moreover, the device can be used for direct-current link filtering of high-voltage direct-current power supply. The filter device has wide application.

The invention provides a fragile article handling device, which belongs to the technical field of fragile article processing. It includes the left clamping finger, the right clamping finger, the lifting support at the lower end of the lifting piston rod of the lifting cylinder, the guide components are evenly arranged between the fixed frame and the lifting support, and the supporting base can slide forward and backward through the slider and set on the guide rail. , the screw rod and the screw nut are threadedly connected, the left jaw can be slidably set on the left guide rod, the right jaw can be slidably set on the right guide rod, the right end of the left piston rod is connected with the left air piston, and the left end of the right piston rod It is connected with the right air piston, the left buffer plate is installed at the right end of the left clamp finger, the right buffer plate is installed at the left end of the right clamp finger, the micro switch is installed in the left clamp finger and the right clamp finger, and the micro switch and the left buffer plate , the right buffer plate fit, the invention not only utilizes the incompressibility of the liquid and the damping characteristics of the damping cylinder to realize the flexible clamping of fragile products in the clamping process, avoiding excessive clamping force, but also realizes the flexible clamping of fragile products. Product handling and delivery.

The invention provides a device for reducing the free liquid level and recovering mechanical energy of a liquid cargo tank. The device comprises an oil baffle plate, a sliding block, a rail, a spring,a rectangular belt, a pulley, a belt wheel, a generator, a pulley fixing seat and a shell. The oil baffle is arranged in the liquid cargo tank of a crude oil transport ship; when the ship performs rolling motion, the oil baffle can damp flowing of crude oil, flowing of the crude oil is slowed down, and the influence of free liquid level on stability of the ship is greatly reduced; compared with arrangement of a plurality of longitudinal bulkheads, the device has the advantages that the construction cost required by arrangement of the longitudinal bulkheads can be saved, the number of liquid cargo tanks is reduced, the complexity of crude oil transport ship piping system design is reduced, and the management cost during loading and unloading is correspondingly reduced. Besides, the oil baffle plate of the device can play a role in damping crude oil and can also recover the mechanical energy of the crude oil and convert the mechanical energy into electric energy, so that part of power is provided for an oil tanker.

The invention discloses a portable intelligent adjustable power supply device, which comprises a shell, a plug seat, a telescopic plug seat fixing mechanism, a USB seat and a socket seat, wherein the front end of the shell is a power connecting part, and the back end of the shell is a power supply part; a first opening is formed in the upper end surface of the power connecting part, and a second opening is formed in the lower end surface of the power connecting part; a plurality of first sockets are formed in the two side end surfaces of the power supply part, and a plurality of groups of second sockets are formed in the lower end surface of the power supply part; the plug seat comprises a seat cover and a power connecting plug, and the seat cover is arranged in the first opening; the telescopic plug seat fixing mechanism is arranged in the power connecting part and comprises a telescopic plug fixing support and a control key, and the upper end of the telescopic plug fixing support and the seat cover are fixed; the lower end of the telescopic plug fixing support is linked with the control key, and the control key is arranged in the second opening. The portable intelligent adjustable power supply device provided by the invention has the effects that the USB seat and the socket seat are additionally arranged, so that the power supply device can charge different loads at the same time; when the power supply device is not used, the control key is controlled to store the plug in the power connecting part, so that the occupied area can be greatly reduced, and thus the practicability is high and the use effect is good.

The invention belongs to the technical field of a prefabricated power transformation box structure and especially relates to a prefabricated power transformation box with an automatic opening and shutting door. The prefabricated power transformation box comprises a box body, a ventilating device, and the automatic opening and shutting door, wherein the automatic opening and shutting door comprises a first fixing part, a second fixing part, and a hydraulic rod; the hydraulic rod is sleeved with a hydraulic cylinder, one end of the hydraulic rod is in extensible connection with one end of the hydraulic cylinder, the other end of the hydraulic cylinder is provided with a first spherical connector which is moveably connected the inside of a door frame through the first fixing part, and the other end of the hydraulic rod is provided with a second spherical connector which is moveably hinged to the upper door beam of the automatic opening and shutting door leaf through the second fixing part. The prefabricated power transformation box is convenient to install, safe and reliable, and high in production efficiency.

A solar water heater comprises a water tank and a heat collector. The heat collector comprises multiple vacuum glass heat collecting pipes, a support, a main water inlet pipe and a main water outlet pipe. Lower ends of the vacuum glass heat collecting pipes are closed, the support is used for fixing the vacuum glass heat collecting pipes, the main water inlet pipe is communicated with low-temperature water, the main water outlet pipe is communicated with the heat preservation water tank, the vacuum glass heat collecting pipes are in a parallel-connection structure, the vacuum glass heat collecting pipes are connected with the main water inlet pipe through a diversion pipe, and each vacuum glass heat collecting pipe is connected with the main water outlet pipe through a connection pipe; the water tank is communicated with the heat collector through an external connection pipeline and an internal connection pipeline respectively, one side, close to the collector, of the external connection pipeline is communicated with a water inlet of tap water, and the water tank is connected with a heater through an external heating pipe and an internal heating pipe. The solar water heater can be controlled in multiple ways, and safety performance can be effectively improved.

The invention discloses a geared five-rod jumping ankle joint based on hydraulic drive, which is composed of a hydraulic gear transmission device and a connecting rod mechanism. The robot has an upward acceleration to simulate the force process of the ankle joint taking off, and at the same time, the tension of the energy storage extension spring provides part of the jumping power for the robot. When the robot lands after taking off, the landing impact force makes each connecting rod rotate in the opposite direction, and the energy storage spring is stretched to convert the landing kinetic energy into potential energy for storage. At the same time, the bilateral rack drives the output shaft of the hydraulic cylinder to move downward, and the hydraulic cylinder The oil circuit acts as a damper. Through the nonlinear characteristics of the five-bar gear to simulate the nonlinear force generation process of the biological ankle joint, the energy storage tension spring and the hydraulic pipeline play the role of energy storage, vibration reduction and buffering, and simulate the vibration reduction and buffering process of the ankle joint when it lands. The gear five-bar jumping ankle joint has the characteristics of compact structure and high driving power.

The invention discloses a stable sailing device for a scenic spot sightseeing ship and a method. The stable sailing device comprises a ship body, a groove is formed in the bottom of the ship body, a balancing weight is arranged in the groove and connected with the ship body through a lifting mechanism which is a scissor-fork electric lifting mechanism, and balance adjusting mechanisms are arranged on two sides of the ship body. Shaking and side overturning of the ship body in case of stormy waves, ship unbalance or inclination can be prevented effectively, and ship traveling safety is guaranteed.

The invention discloses a hydraulic damping force adjusting mechanism for a hydraulic hinge. The hydraulic hinge comprises a door frame fixing hinge, a swing cylinder, a swing blade shaft and a cylinder end cover, wherein the door frame fixing hinge is provided with a lower accommodating barrel; the swing cylinder, the swing blade shaft and the cylinder end cover are arranged in the lower accommodating barrel; and a lower end cover is arranged at the bottom of the lower accommodating barrel. The hydraulic damping force adjusting mechanism plays a role in damping by adopting a hydraulic technology, so that a door is slowly closed or opened, and no large sound is generated; and the hydraulic damping force adjusting mechanism is simple in structure and convenient to manufacture.

The invention provides a passive air spring shock-absorption mechanism provided with a universal damper and a variable rubber membrane. The passive air spring shock-absorption mechanism provided withthe universal damper and the variable rubber membrane comprises damping oil (1), the universal damper (2), a central swing rod (3), a swing rod (4), a load limiting disc (5), a load disc (6), a swingrod ball (7), a rubber membrane fixing piece (8), the variable rubber membrane (9), a center cavity (10), an auxiliary air chamber (11), a main air chamber shell (12), a main air chamber (13), an auxiliary air chamber shell (14), and a damping hole (15). When the passive air spring shock-absorption mechanism is vibrated in the horizontal direction, the central swing rod moves horizontally, a damping effect is achieved through the damping oil and the universal damper jointly, and the vibration isolation performance in the horizontal direction is improved. Meanwhile, when the passive air springshock-absorption mechanism is vibrated, the central cavity moves to drive the variable rubber membrane to compress gas, and a damping effect is achieved when the compressed gas passes through the damping hole, so that the vibration isolation performance in the horizontal direction is further improved. The passive air spring shock-absorption mechanism is high in universality, simple in structure and good in manufacturability and has a broad application prospect.

The invention provides a bearing for an ultralow-temperature liquid pump, and relates to a bearing for a liquid pump, and the bearing is used for solving the problems of an existing bearing for ultralow-temperature liquid pump that the bearing fails to run smoothly under a running condition with ultralow temperature and high speed because of no retainer, and the bearing cannot run for a long time without being lubricated. According to the bearing for the ultralow-temperature liquid pump, two annular retaining frames have the same width; annular chambers are formed at two ends between an external ring and an internal ring, with each one comprising a circular retaining frame inside; a plurality of bucket holes are arranged at the positions the circular retaining frame corresponding to a plurality of spherical rolling bodies; a plurality of nail holes are uniformly distributed on the annular retaining frame along the circumference; tubular rivets are arranged in every correspondingly arranged nail holes on the two annular retaining frames, and two ends of the tubular rivets are arranged on the external end surfaces of corresponding annular retaining frames by flanging; the two annular retaining frames are connected through a plurality of tubular rivets; and the width of the external ring is less than the sum of the width of the two annular retaining frames. The bearing is applied to the ultralow-temperature liquid pump.

The invention discloses an abdominal wheel with the controllable travel distance. The abdominal wheel comprises handles, a center shaft, a first end cover, a second end cover and wheel body, the first end cover and the second end cover are integrated with the wheel body and wavily arranged on the center shaft, the handles are correspondingly connected to the two ends of the center shaft, a connecting shaft sleeve is fixed to the center shaft, at least one group of elastic damping devices are mounted on one side of the connecting shaft sleeve, a sliding shaft sleeve is arranged on the other side of the connecting shaft sleeve, a limiting sleeve capable of sliding in the axial direction is arranged on the sliding shaft sleeve, a travel distance locating seat sleeves the limiting sleeve, the travel distance locating seat is fixed to a middle division plate, the travel distance locating seat is provided with a rotary guide rail groove, and a rotary guide rail matched with the rotary guide rail groove is arranged on the limiting sleeve; and in the initial state, the locating end of the rotary guide rail is matched with the initial limiting end of the rotary guide rail groove to limit. The abdominal wheel has the advantages that the structure is simple, the operation is convenient, damping is adjustable, the travel distance is controllable, and training is safe after the structure is adopted.