91results about How to "Avoid abnormal wear and tear" patented technology

The invention discloses a transmission mechanism with an intermittent output action, which comprises a conjugate cam group, an output shaft, two rocker arm blocks, a transmission connecting rod group and an input shaft, wherein the conjugate cam group comprises two cams; the output shaft is pivoted in the center of the base circle of the two cams and is provided with a sun gear; the two rocker arm blocks are provided with a planetary gear respectively; the two planetary gears are engaged with the sun gear; one rocker arm block is pivoted with two rollers; the two rollers are contacted with the two cams respectively; the transmission connecting rod group is arranged between the two rocker arm blocks to make the two rocker arm blocks actuated synchronously; the input shaft and the output shaft are positioned on the same common axis; and the input shaft is used for driving the two rocker arm blocks to rotate through a planet carrier. Therefore, the stress of the sun gear is uniformly dispersed on the engaged sides of the two planetary gears, so that the dynamic balance of a device can be achieved and the mechanism can be applied to high-speed occasions.

The invention discloses a single-stage suspension device for a bogie of a high-speed rail wagon. The device comprises a rocker arm type shaft box, wherein one end of the shaft box is connected with a wheel set, and the other end of the shaft box is connected with a framework through a rocker arm elastic rubber pitch point; the rocker arm type shaft box has a separated type positioning structure; and the positioning structure of the rocker arm type shaft box specifically comprises an upper shaft box and a lower shaft box which are in butt joint with each other up and down. By the suspension device, the requirement that the highest shaft weight is 18t when the highest speed of the wagon is 200km/h can be met; and the suspension device has the remarkable characteristics of simple structure, convenience for maintenance and reliably performance.

The invention discloses an equipment vibration monitoring system based on a multi-point MEMS accelerometer and a wireless network. All point location acceleration data of monitored equipment are collected in real time by the system through a distributed multi-point MEMS acceleration sensor, the data are transmitted back to the system through a wireless communication network, comparative analysis is carried out on the data and a preset acceleration threshold value, whether vibration abnormal alarm prompts are triggered or not is judged, and thus the overall vibration state of the monitored equipment can be learnt comprehensively in time. The equipment vibration monitoring system based on the multi-point MEMS accelerometer and the wireless network can effectively solve the problems of equipment sympathetic vibration and equipment abnormal abrasion caused by sudden abnormal vibration of a certain part of the monitored equipment and yield decline caused by the equipment sympathetic vibration and the equipment abnormal abrasion. The equipment vibration monitoring system based on the multi-point MEMS accelerometer and the wireless network is especially suitable for industrial enterprises with production lines and large-scale manufacturing equipment, and is low in cost and high in reliability.

The invention provides a smart drugstore and relates to the technical field of medical apparatuses and instruments. The smart drugstore comprises a drugstore body, wherein a drug outlet system and a storage system are arranged in the drugstore body and are both connected with a drug control unit, horizontal drug storage combined modules are arranged in the storage system, and the storage system adopts dense horizontal modules for drug storage, is maximum in storage and high in space utilization rate and is 2-3 times of a traditional chute type storage system in space utilization rate. The storage system can storage more than 880 drugs, meanwhile can be expanded according to the actual demand, is provided with full-automatic horizontal drug putting manipulators and can arrange storage varieties and quantity according to the actual situation of a hospital. The drug outlet system adopts an overall drug outlet mode, the time for completing a single prescription is 6-8 seconds, and 500-700 prescriptions can be processed per hour. Multiple drug delivery flow channels in the drug outlet system can be freely adjusted as required, and drug storage and drug outlet rationality are ensured.

The invention discloses a friction plate optimization method based on contact pressure of a friction plate and a brake disc. The method comprises the following steps: establishing a finite element model according to geometric parameters of a brake and material parameters of each component, and performing static solution on the established finite element model to obtain contact pressure data between the friction plate and the brake disc; according to the contact pressure data between the friction plate and the brake disc in the brake, calculating the standard deviation of the contact pressure of each unit of the friction plate , and when the standard deviation of the contact pressure of each unit of the friction plate is larger than a preset target value, adjusting material parameters of the friction plate in the brake until the standard deviation of the contact pressure of each unit of the friction plate is smaller than or equal to a preset target value. According to the method, the unit contact pressure standard deviation serves as an index for evaluating the uniformity degree of the contact pressure, so that the contact pressure between the brake disc and the friction plate is uniformly distributed as far as possible, and the problems of abnormal abrasion of the brake disc and the friction plate and brake shaking and brake noise caused by the abnormal abrasion are avoided.

The invention discloses an intelligent automatic speed change system based on a manual speed change box and a working method thereof. The system comprises a manual speed change box body and an intelligent control device. The intelligent control device is composed of an electromechanical execution part and an intelligent control module part. The electromechanical execution part comprises a speed change execution device, a clutch execution device and a gear shifting execution device. According to the system, by means of combination of all mechanisms, the rapid automatic gear shifting process andthe better gear shifting corresponding characteristic of a car are achieved, thus an engine and the speed change box are at the optimal operation state, good fuel efficiency is obtained, abnormal wear and damage caused by manual operation are avoided, and operation and use efficiency of vehicles are improved.

The invention discloses an air hammer with a double-rod piston. The air hammer comprises a cylinder, wherein a cylinder cover is arranged on the cylinder; a piston, a piston pin and a connecting rod are arranged inside the cylinder; the piston pin is arranged below the piston; the connecting rod is connected with the piston pin; a lower guide sleeve is arranged around the connecting rod; a crank and a crankshaft are connected at the other end of the connecting rod; an upper guide sleeve is arranged in the cylinder cover and comprises a guide hole and a sealing device installed on the lower part inside the guide hole; and an upper piston rod is connected above the piston and penetrates through the guide hole and extends out of the cylinder cover. The air hammer has the following beneficial effects that abnormal wear is avoided, thus prolonging the service lives of the piston and the cylinder and prolonging the service life of the air hammer.

Provided is a connecting device of a bulb lead screw and a worm gear. A lower ball bowl is installed at the bottom of a turbine box, a worm is installed at the position of the upper middle portion of the turbine box, a turbine is installed in a cavity of the turbine box, the turbine is correctly meshed with the worm, a locating pin is installed in a bulb blind hole of the bulb lead screw, simultaneously a joint ball is installed on the locating pin protruding out of a ball, the joint ball right faces to a notch on the turbine, the ball of the bulb lead screw penetrates through a middle hole of the turbine to be installed on a ball bowl portion of the lower ball bowl, an upper ball bowl penetrates through the upper portion of the bulb lead screw to be installed on the turbine box, a pressing and covering board is installed on the turbine box, simultaneously the pressing and covering board is fixed through a bolt, and finally a connecting rod is installed on the bulb lead screw.

The invention provides a sleeve shaft type differential locking mechanism. The locking mechanism is arranged on a half shaft in a drive axle and connected with a differential shell, and comprises a spring, a chain wheel, a chain wheel bracket for fixing the chain wheel, a slide block, a piston, a bearing base and a steel sleeve arranged on the outer sides of the parts, which are arranged in the same one axial direction in sequence; and the chain wheel and the piston, the piston and the bearing base, and the piston and the steel sleeve are all coaxial. The locking mechanism adopts a more compact structure to realize a differential locking function, prevents the structure of projecting such devices as a poking fork on the side surface of an output end, reduces the total size of the drive axle, radially positions the piston and the steel sleeve through dowel pins, and prevents the piston from rotating in the working process to cause abnormal wear.

The invention provides a tire pressure monitoring system self-adapted to altitude. The tire pressure monitoring system at least comprises a sensor module, a receiver and an air pressure sensor, wherein the sensor module is arranged inside a tire; the receiver is mounted in a cab; the sensor module and the receiver are in communication connection in a wireless radio frequency manner; the air pressure sensor is connected with the receiver. According to the tire pressure monitoring system disclosed by the invention, an accurate tire pressure value can be obtained through correcting an absolute pressure value of the tire, so that the accurate monitoring of the tire pressure is realized and the driving safety is improved.

The invention discloses a chain saw separation and connection device air-cooling device comprising a right box body, a right crank, a holder, shoe blocks, a separation and connection device shell anda brake band. The right crank is installed on the right box body. The holder is fixed to the right crank. The separation and connection device shell is arranged on the right crank. The brake band is arranged on the separation and connection device shell in a sleeving manner. The shoe blocks are correspondingly arranged on the holder, connected with one another through separation and connection device springs and limited in the separation and connection device shell through an outer cover of the separation and connection device shell. Right box air inlet holes are formed in the right box body.An annular flow guide piece is arranged at the bottom of a separation and connection device chamber of the right box body. An annular jet flow passageway is formed by the annular flow guide piece andthe outer wall of the separation and connection device chamber. The outer cover of the separation and connection shell corresponds to the center position of the annular jet flow passageway. An air volume regulation piece is installed on the portion, on the lower portion of the holder, on the right crank. After the structure is adopted, the chain saw separation and connection device air-cooling device has the advantages of being simple and reasonable in structure, good in cooling effect, high in saw cutting efficiency, low in service life and capable of blowing internal sawdust and the like.

The invention discloses an intelligent wind pressure control method for a positive pressure dustproof system of a cone crusher. The method involves an air blower provided with a speed adjusting motor, a frequency converter, a PLC, a differential pressure type pressure sensor, a pipeline for connecting the air blower with equipment, and an equipment airflow channel, wherein the PLC is connected with the differential pressure type pressure sensor and the frequency converter. According to the method, in the equipment operation process, the differential pressure type pressure sensor is used for monitoring the wind pressure in the pipeline in real time and on line, and continuously inputting analog signals into the PLC, the PLC is used for control, once the monitored analog signals do not accord with the preset wind pressure value of the PLC, the PLC sends an instruction to adjust the frequency converter, and the frequency converter controls and adjusts the rotating speed of the speed adjusting motor according to the instruction, so that the output wind pressure of the air blower is changed until the preset value is reached, dust is effectively prevented from entering an equipment cavity, lubricating oil is prevented from being polluted, and normal operation of the equipment and the service life of key parts are ensured.

The invention discloses an efficient distillation vacuum cooler. The efficient distillation vacuum cooler comprises an upper head, an upper pipe plate, a barrel body, a lower pipe plate, a lower head, a cooling water inlet pipe, pull rods, baffle plates and heat exchange pipes. The upper pipe plate and the lower pipe plate are welded and connected to the upper end and the lower end of the barrel body correspondingly. The baffle plates are arranged in the barrel body through the pull rods. The cooling water inlet pipe is horizontally arranged and fixedly connected to the pipe wall of the lower portion of the barrel body; the baffle plates are composite baffle plates and comprise the flexible baffle plates and the rigid baffle plates; the flexible baffle plates and the rigid baffle plates are connected through non-detachable connection structures; and the outer edges of the flexible baffle plates protrude from the rigid baffle plates and are in interference fit with the inner wall of the barrel body. According to the further improvement, the flexible baffle plates are soft plastic plates or aluminum-plastic plates; the joint, close to the inner wall of the barrel body, of the upper end surface of the lower pipe plate and the barrel body, as well as the joint, close to the inner wall of the barrel body, of the lower end surface of the upper pipe plate and the barrel body are both provided with annular grooves; and a partition plate is arranged in the barrel body, so that an outlet of the cooling water inlet pipe is separated from the heat exchange pipes. The efficient distillation vacuum cooler is high in heat exchange efficiency, small in welding stress, reliable and durable.

The invention provides a hydraulic parking and emergency trailer control device and a wheeled engineering vehicle. The hydraulic parking and emergency trailer control device comprises a direct-current motor pump (14), a first two-position three-way reversing valve (3), a second two-position three-way reversing valve (13), a shuttle valve (9) and a first two-position two-way reversing valve (4); hydraulic oil can sequentially pass through the direct-current motor pump (14), the second two-position three-way reversing valve (13), the shuttle valve (9) and the first two-position two-way reversing valve (4) and then is output from an oil port 2 of the first two-position two-way reversing valve (4). The hydraulic parking and emergency trailer control device can realize the functions of parking brake release, stable parking, emergency trailing, ramp automatic parking, running automatic release and the like of a wheeled vehicle, and provides intelligent control for running and parking of the wheeled engineering vehicle.

The invention relates to the technical field of bulldozers, particularly to a hydraulic control system of a bulldozer blade and a control method. The hydraulic control system comprises a pilot control valve, a left lift valve, a left lift cylinder, a right lift valve and a right lift cylinder, wherein the pilot control valve controls the left lift valve and the right lift valve; and the left lift valve and the right lift valve respectively control the left lift cylinder and the right lift cylinder. According to the hydraulic control system, through operation of a handle, oil is introduced or drained at pilot control ends on the two sides of the left lift valve and the right lift valve, the left lift cylinder and the right lift cylinder are in the stretched or compressed state, and lifting, falling and floating of the blade are achieved; or one of the left lift cylinder and the right lift cylinder is in the stretched state and the other of the left lift cylinder and the right lift cylinder is in the compressed state, inclination action of the blade is achieved, when a traditional blade is inclined, in-cylinder abnormal high pressure caused by passive stretching or compression of the lift cylinders of the blade is avoided, and the service life of the lift cylinders is effectively prolonged; and inclined cylinders and corresponding pipelines are eliminated, so that the structure of the integral machine is simplified, layout is more simple, and manufacturing cost of the integral machine is reduced.

The invention belongs to the technical field of automobile parts and particularly relates to a lightweight automobile hub. The lightweight automobile hub comprises a mounting plate, a spoke and a rim,wherein the spoke is connected with the mounting plate and the rim; the spoke is provided with a cooling module for cooling the entire lightweight automobile hub, and the control module comprises sliders, springs, sliding grooves and a cooling groove, and the spoke is provided with the sliding grooves inside which the sliders are slidingly connected through the springs; the rim is provided with the ring-shaped cooling groove; the cooling groove is connected with the sliding grooves through communicating grooves, and the cross section of the communicating grooves is in an I shape; the bottom of a vehicle body is provided with a cooling box, and the bottom of the cooling box is provided with a liquid outlet pipe which is communicated with the cooling groove. The lightweight automobile hub is simple in structure and convenient to operate, and being cooled by the cooling module, can avoid abnormal wearing a tyre due to overhigh temperature.

The invention discloses a metal particle spiral conveyor used in a high-temperature environment and belongs to the technical field of material conveying. The conveyor comprises a fixed support, a fixed sealing head, a shaft, a spiral blade, a movable sealing head, a driving device, a movable sealing head adjusting device, a cooling water connector, a water-cooled cover, a sealing rope, a sealing nitrogen connector, a sealing nitrogen nozzle, an adjusting support, a positioning bolt and an adjusting air cylinder. The conveyor has the advantages that a variable-frequency and variable-speed motor is adopted as a power supply, the spiral blade is cooled in a direct and indirect combined mode and is designed to be of a multi-end structure, and the adjusting air cylinder is arranged; in this way, the overall service life of the conveyor is significantly prolonged, the frequency of examining and maintaining the spiral blade is greatly reduced, maintenance cost is greatly reduced, meanwhile, the annual operating rate of a rotary hearth furnace production line is improved, and the manufacturing cost of finished products is further reduced.