56results about How to "Meet different working conditions" patented technology

The invention discloses an air humidity control system of a proton exchange membrane fuel cell. The air humidity control system comprises a detection module, a control module and an executing module,wherein the detection module is used for detecting air inlet temperature and air inlet humidity of air entering a fuel cell stack; the control module is used for comparing the detected air inlet temperature and air inlet humidity with pre-set optimal temperature range and optimal humidity range, and sending an adjusting instruction to the executing module when the air inlet temperature is not in the optimal temperature range or the air inlet humidity is not in the optimal humidity range; the executing module is used for adjusting the air inlet temperature and the air inlet humidity according to the adjusting instruction, and enabling the air inlet temperature and the air inlet humidity to meet the optimal temperature range and the optimal humidity range respectively. According to the air humidity control system of the proton exchange membrane fuel cell, the temperature and humidity of the air entering the stack are rapidly adjusted according to the needed optimal temperature and humidity of the fuel cell, so that the inlet air supplied to the fuel cell can meet requirements of a carrying tool under different working conditions and environments.

The invention discloses a method and a device for identifying the working condition of a five-knuckle arm crane with wire ropes. The working condition is automatically identified by additionally arranging a length measuring device for measuring extension elongation of the second knuckle arm and a performance curve; extension elongation information of the second knuckle arm is measured by using the length measuring device and the information is transferred to a host machine of a moment limiter through an aboard communication network of the crane; the host machine of the moment limiter calculates the extension rate of the second knuckle arm according to the length information to further perform intelligent matching according to a program compiled in advance and the performance curve stored in the host machine of the moment limiter to pair the proper performance curve so as to realize intelligent hoisting. The method and device disclosed by the invention overcome the defect that the conventional sequential stretching mode must be strictly operated according to the sequence of an operation procedure, a hoisting arm can stretch arbitrarily, the special demand of the user on different working conditions and hoisting speed is satisfied, and the lifting performance is enhanced.

The invention discloses a stepless transmission of hydraulic machinery. The stepless transmission comprises a power input shaft, a pump controlled hydraulic motor system, a bus planetary row mechanism, a duplex planetary gear reversing mechanism and a power output shaft. A brake installed in the duplex planetary gear reversing mechanism is independently controlled, so that two working modes of forward and backward movement of a tractor can be selected, and multi-section continuous stepless speed control output of power of the tractor is realized. The transmission has the advantages of the compact structure, reasonable design, convenience in operation and high transmission efficiency and has high economic benefits.

The invention discloses a double power drive walking mechanism, which belongs to a vehicle walking system. The technical proposal comprises: a differential gear train 4-5-6-7, an internal gear 7 and a wheel 8 are coaxially connected through a long-closed torque clutch 12; a bevel gear 3 is fixedly connected and coaxially rotates with a center gear 5; a bevel gear 2 is meshing driven with the bevel 3; a cylindrical gear 9 is fixed connected and coaxially rotates with the bevel gear 2 to form a right-sided driving device 9-2-3-4-5-6-7-12-8 which is symmetrically arranged with a completely identical left-sided driving device 9<1>-2<1>-3<1>-4<1>-5<1>-6<1>-7<1>-12<1>-8<1> on a frame 13 under the condition that the cylindrical gear 9 is correctly meshing transmitted with 91; tie bars 4 and 41 are fixedly connected and coaxially rotate with the bevel gear 1 and a main shaft 10; the bevel gears 11 is meshing driven with the bevel 1; the bevel gear 11 is driven by the main power and the cylindrical gear 9 is driven by the auxiliary power; the left and right wheels are driven by the main and auxiliary power to realize the vehicle running through the differential gear train.

The invention discloses a road roller combining vibration, oscillation and complex excitation as a whole, which comprises a frame; an engine, a vibrating wheel, and a transmission part connected with the engine are disposed in the frame; a cab is disposed above the frame; the vibrating wheel comprises a vibrating wheel cylinder body; a center shaft is disposed at the center of the vibrating wheel cylinder body; four eccentric shafts are disposed around the center shaft with equal angles; the eccentric shafts are mounted on a supporting plate disposed on the vibrating wheel cylinder body; the end parts of the eccentric shafts are movably connected with driven pulleys; the driven pulleys are connected by a driving belt with driving pulleys which are disposed at the end part of the center shaft and at the same side as the driven pulleys; the driven pulleys are connected with a phase adjusting mechanism by gears at the end surfaces. The invention combines vibration, oscillation and complex excitation functions as a whole, enhances the application effect, expands the application scope, has a simple structure, is convenient for using, and is convenient for popularization and application.

The invention provides a liquid-air dual-supply cold source module combining natural cooling and mechanical refrigerating and a control method thereof. The cold source module comprises a closed cooling tower and a cold water machine. The cold source module can be used for simultaneously providing high-temperature freezing water and low-temperature freezing water, and three running modes of single-supply liquid cooling, single-supply air cooling and liquid-air dual supply are switched according to actual demand. Through adjusting running states of an electrically-operated valve and equipment bya temperature sensor, a natural cold source is utilized to the greatest extent, so that the energy consumption of the system is reduced; with the design of an integrated module, installation and capacity expansion are facilitated, and subsequent maintenance is also facilitated; the modules are backup to each other, the running reliability of the system is improved; and two different types of coldwater (such as 35 DEG C natural cooling water and 7 DEG C mechanical refrigerating water) can be provided by the cold source module, a single form of cold water can be independently supplied, two forms of cold water also can be simultaneously supplied, and different application working conditions are met.

The invention discloses a whole vehicle thermal management system and a method based on a hybrid electric vehicle. The system comprises a compressor, an expander, a heat exchanger, a water tank, a pump, a radiator, an engine and a valve, through controlling the on-off of the valve, different operation modes can be adjusted; battery management, waste heat recovery and combination of an air conditioner/heat pump system are realized; the requirements of refrigeration and heating of an air conditioner and heat dissipation and preheating of an engine and a battery are met; individual working conditions do not influence each other, individual completion, the waste heat recovery system, the air conditioner/heat pump system, the air conditioner/heat pump system and the battery management system are coupled at the same time, waste heat recovery is met, the refrigerating/heating requirement can be met at the same time, the requirement that the air conditioner/heat pump system refrigerates and cools the battery pack is met, and the heat management requirement of the hybrid electric vehicle under different driving working conditions is met. The whole system is high in integration degree and suitable for various working conditions, and the energy utilization efficiency of the whole vehicle can be effectively improved.

The invention provides an anti-blocking type gas filter which is provided with a cylindrical filter body. The filter body is internally provided with a first vertical screen plate, a second vertical screen plate and a third vertical screen plate, wherein the first vertical screen plate, the second vertical screen plate and the third vertical screen plate are arranged at intervals along the radial direction of the filter body; an inner cavity of the filter body is divided into a first cavity, a second cavity, a third cavity and a fourth cavity, wherein a first filter screen, a second filter screen, a third filter screen and a fourth filter screen are correspondingly placed in the first cavity, the second cavity, the third cavity and the fourth cavity, and the mesh numbers of the first filter screen to the fourth filter screen are gradually increased; four openings are formed in the bottom of the filter body at intervals, the openings correspond to the first cavity, the second cavity, the third cavity and the fourth cavity, and sealing plates are respectively arranged on the openings in a covering way; the mesh aperture of the second vertical screen plate is smaller than the mesh aperture of the first vertical screen plate and larger than the mesh aperture of the third vertical screen plate.

The invention relates to a drilling and milling integrated-type excavation head which comprises a gear reduction box, a drilling mechanism and a milling roller. The gear reduction box comprises a reduction box body and further comprises a first hydraulic motor and a second hydraulic motor which are mounted in the reduction box body; the drilling mechanism comprises a pin shaft, a spline pin shaft,a third hydraulic motor and a drill bit, and the third hydraulic motor is connected with the drill bit; a first motor output shaft of the first hydraulic motor is connected with a tool changing output shaft which is connected with the spline pin shaft, and a second motor output shaft of the second hydraulic motor is connected with a reduction output shaft through a reduction middle shaft; the milling roller is connected to the reduction output shaft, and the pin shaft and the spline pin shaft are both mounted on the reduction box body; and the pin shaft and the spline pin shaft are connectedwith the drill bit through a swing frame, and the milling roller can be located in the swing frame. According to the drilling and milling integrated-type excavation head, the hydraulic motors are adopted for driving, the overall structure is simple and compact, the drilling and milling integrated-type excavation head is formed, different working conditions during excavation operation are met, andthe working efficiency is improved.

The invention discloses a circular knitting machine for spinning. A driven gear is welded to the outer cylindrical surface of an upper dial, a power unit is arranged on a machine base, a driving gearis installed on an output shaft of the power unit, the driving gear meshes with the driven gear, a bottom plate is arranged below the machine base, a plurality of lifting oil cylinders are fixedly installed at the top of the bottom plate, piston rods of the lifting oil cylinders are fixedly arranged at the bottom of the machine base, a plurality of supporting oil cylinders are further fixedly installed at the top of the bottom plate, the piston rods of the supporting oil cylinders penetrate through the bottom plate, supporting plates are fixedly arranged at the extending ends of the supportingoil cylinders and supported on the ground, a plurality of universal wheels are installed at the bottom of the bottom plate and away from the bottom face, and an upper dial locking device is arrangedat the top of the machine base. The circular knitting machine and the using method of the circular knitting machine have the beneficial effects that the circular knitting machine is convenient to move, the relative positions of the upper dial and a lower dial can be freely changed, the upper dial can be rapidly locked, and the pitching angle of a yarn nozzle can be changed.

The invention discloses a device capable of positioning and installing a flying pipe, and relates to the technical field of flying pipe installation. By aiming at the problem that a long pipeline is inconvenient to position when an existing flying pipe is installed, the following scheme is provided, wherein the device comprises a bottom plate, first threaded pipes are slidably connected to the twosides of the top of the bottom plate, movable rings are movably arranged on the outer portions of the first threaded pipes in a sleeving manner, and the sides, close to each other, of the two movablerings are fixedly connected with a telescopic mechanism; and the top of the telescopic mechanism is fixedly connected with a driving transmission mechanism, a first screw rod is arranged in each first threaded pipe in a threaded sleeved manner, a second bevel gear is fixedly arranged on the outer ring of each first screw rod in a sleeving manner, and the top of each first screw rod is rotationally connected with a horizontal adjusting mechanism. According to the device, the horizontal position and height of a containing plate can be conveniently adjusted, pipelines of different sizes can be conveniently borne and positioned, manual positioning operation is not needed, labor is saved, efficiency is high, the whole device has multiple purposes, the practicability of the device is improved,and the device is suitable for market popularization.

The invention aims to provide a reinforced flow guide type large-flow injection device of a gaseous fuel engine. The device comprises an air cylinder cover, an air cylinder wall, a piston, an air inlet channel, a fuel gas injection valve and a fuel gas nozzle, wherein the air cylinder cover is located above the air cylinder wall, the piston is located in the air cylinder wall, the air inlet channel is formed on the air cylinder cover, the fuel gas nozzle is located in the air inlet channel and in front of the air inlet valve, the fuel gas injection valve is located outside the air inlet channel, the fuel gas nozzle is connected with the fuel gas injection valve through a fuel gas flow guide pipe, spraying holes are formed at a tail end of the fuel gas nozzle in the circumferential direction, the spraying holes distributed in the same circumference of the tail end of the fuel gas nozzle are a set of spraying holes, each set of spraying holes are evenly distributed in the circumferentialdirection, and the diameter-depth ratio of the spray holes is reduced by thickening a tail end part of the fuel gas nozzle. The device is advantaged in that the fuel gas flow guide effect of a multi-hole spraying nozzle can be enhanced, and the requirements for different working conditions and different emission properties of an engine can be met through different spraying hole arrangement schemes.

Provided are an SNCR flue gas denitration spray gun and a double-cavity mixing double-layer injection technology thereof. The spray gun is composed of a central injection pipe, an outer-layer annular injection pipe, a central mixing cavity and an outer-layer mixing cavity. The spray gun is characterized in that the injection technology includes the steps that a reducing agent entering from a reducing agent conveying pipe section and compressed gas entering from a compressed gas conveying pipe section are mixed in a first mixing cavity, and most gas-liquid mixture enters the central injection pipe and is sprayed in flue gas to be treated through a central injection opening; a part of the gas-liquid mixture in the first mixing cavity enters a second mixing cavity through a one-way communicating pipe, a part of compressed air entering from the compressed air conveying pipe section does not pass through the first mixing cavity and enters the second mixing cavity directly through a communicating pipe, and a gas-liquid mixture in the second mixing cavity is sprayed in the flue gas to be treated through the outer-layer annular injection pipe. The SNCR flue gas denitration spray gun and the double-cavity mixing double-layer injection technology of the SNCR flue gas denitration spray gun have the advantages that two gas-liquid mixtures containing the reducing agent and the compressed air can be obtained by the adoption of double-cavity mixing so as to complete different spraying effects, and double layers of sleeves can prevent the two gas-liquid mixtures from influencing mutually.

The invention belongs to the related technical field of auxiliary load bearing equipment, and discloses a cross-joint load bearing supporting device based on a passive variable stiffness damper. The cross-joint load bearing supporting device comprises a load supporting mechanism, a clutch mechanism and a variable stiffness damper mechanism. The clutch mechanism and the variable stiffness damper mechanism are respectively arranged on the load supporting mechanism, and the clutch mechanism is connected with the variable stiffness damper mechanism. The supporting device is a pure passive lower limb exoskeleton, the clutch mechanism is passively triggered to be opened and closed through human body movement, and then the variable stiffness damper mechanism is locked and released in a time-sharing mode. When the supporting device is impacted or sheared, passive self-adaptive rigidity can be achieved, variable rigidity and variable damping of a damper are passively triggered through human body movement, the problems that an active load bearing exoskeleton is complex in structure and large in whole machine mass do not exist, and the problem that power energy is limited is solved.

The invention provides a variable spring assembly, and belongs to the technical field of machines. The variable spring assembly comprises a top plate, a bottom plate and spring bodies arranged betweenthe top plate and the bottom plate. The two spring bodies are arranged, a barrel is arranged between the two spring bodies, the barrel is fixedly connected with the bottom plate, and the bottom plateis provided with air outlet holes. The air outlet holes communicate with the barrel. A guide bucket is arranged in the barrel, the top and the bottom of the guide bucket are closed and opened correspondingly, the guide bucket is fixedly connected with the upper plate, and seal is formed between the guide bucket and the barrel. An electromagnet is arranged in the guide bucket and comprises a shelland a main shaft. The shell stretches out of the guide bucket, seal is formed between the shell and the guide bucket, the lower end of the shell is fixedly connected with the barrel through a support, a plate body is further horizontally arranged in the barrel and fixedly connected with the lower end of the main shaft, and the electromagnet can drive the plate body to abut against the lower plateand close the air outlet holes. An air inlet hole is formed in the barrel wall of the barrel in a penetration manner and located between the plate body and the guide bucket, and an air nozzle communicating with the air inlet hole is fixed to the exterior of the barrel. The variable spring assembly is high in buffering precision.

The invention provides novel scissors capable of realizing remote application. The novel scissors comprise a cutter rack, a cutting blade, a cutting blade rack, an inner telescopic rod, a gear shaft,an outer supporting rod, a spool, a handle, steel wires, a spring, a bolt and a rocking handle. The specific structure and the connection relationship are as follows: the inner telescopic rod and theouter supporting rod are coaxial; the gear shaft is installed on the outer supporting rod; the rocking handle is arranged at one end of the gear shaft; the gear shaft and the inner telescopic rod realize stretch and contraction by virtue of engaged transmission of a gear and a rack; the cutter rack is arranged at one end of the inner telescopic rod; the handle is arranged on the outer supporting rod; the handle is connected with the cutter rack and the spring through the steel wires; each steel wire is externally provided with a wire jacket; and the steel wires are pulled by pressing the handle so that a cutter can be moved for implementing cutting. The novel scissors provided by the invention are convenient to carry or store, can realize remote cutting, especially cutting of a high-altitude object, is safe and reliable, and effectively prevents the danger caused by climbing a high position.

The invention discloses a filter with an external flushing pipe. The filter with the external flushing pipe comprises a flushing mechanism, a barrel and a core tube arranged in the barrel. A cavity isarranged in the barrel; a water inlet and a water outlet are formed in two ends of the barrel; a filter cover is arranged on an opening part of the top part of the barrel; a plurality of filter holesare uniformly formed in a tube wall of the core tube; an opening in one end of the core tube is detachably connected with the water outlet; the other end of the core tube is arranged in an outward protruding way; the diameter of the other end of the core tube is gradually tapered; the flushing mechanism comprises a discharge pipe and a flushing pipe; a discharge outlet is formed in the barrel; one end of the discharge pipe is connected with the discharge outlet; a flange cover is arranged on the other end of the discharge pipe; a first through hole and a second through hole are formed in thebarrel and the core tube respectively; one end of the flushing pipe penetrates through the first through hole and is connected with the second through hole. According to the filter with the external flushing pipe provided by the invention, a comprehensive use performance of the filter is improved, the work stability of the filter can be ensured with an external flushing structure, and the servicelife of the filter is prolonged.