3615 results about "Oil supply" patented technology

The invention provides a high-precision numerical control machine tool operation state abnormity monitoring method and system, and relates to the technical field of numerical control machine tool operation state abnormity monitoring. The method comprises the steps that the displacement deviation of a feeding system, the oil supply pressure of a lubricating system, real-time temperature data of a driving motor stator and original signals during machining are collected; the three are preprocessed to obtain a final time sequence data set, and an original signal is processed to obtain a normalized smooth physical signal; then obtaining associated features by using a multi-parameter association analysis algorithm, and comparing the associated features with a preset dynamic reference feature library to judge the running state; if the operation state of the high-precision numerical control machine tool is abnormal, the fault tree diagnosis model is used for positioning an abnormal root part and process parameters, then a targeted solution is generated, full-process monitoring of the operation state of the high-precision numerical control machine tool can be completed, and data collection, preprocessing, correlation analysis, abnormality judgment, and root positioning and targeted solution generation during abnormality are achieved.

The utility model discloses an electro-hydraulic reversing valve which comprises a pilot electromagnetic valve and a main valve. The pilot electromagnetic valve is detachably connected with the main valve; after the pilot electromagnetic valve is connected with the main valve, an oil cavity in the pilot electromagnetic valve is communicated with an oil way in the main valve; a first pilot control oil way, a second pilot control oil way, an outer oil supply way, an inner oil supply way, an outer oil discharge way and an inner oil discharge way in the main valve are all casting oil ways, and the number of each oil port is two. The oil paths in the main valve are all formed through casting instead of auxiliary holes, so that the impact resistance of the oil paths can be improved, oil leakage at conical plugs of the auxiliary holes is avoided, the pressure loss of hydraulic oil flowing in the oil paths can be reduced, and the through-flow capacity of the hydraulic oil in the oil paths is improved.

A turbocharger device relates to the technical field of internal combustion engine supercharging devices and comprises a bearing body, an oil supply pipeline and an integrated bearing. The integrated bearing comprises a pressing end integrated bearing and a vortex end integrated bearing which are arranged in parallel in the axial direction, the bearing body comprises a bearing seat inner wall face, a supporting sleeve is rotationally arranged in the bearing seat inner wall face, and the pressing end integrated bearing and the vortex end integrated bearing are located on the two sides of the supporting sleeve; the pressure end integrated bearing and the vortex end integrated bearing are correspondingly connected with a first oil supply pin and a second oil supply pin which are communicated with inner cavities of the pressure end integrated bearing and the vortex end integrated bearing in the radial direction, and the first oil supply pin and the second oil supply pin are fixed to the bearing body. The split type bearing system is used for solving the problems that although a split type bearing system in the prior art avoids the influence of high temperature, engine oil consumption is large, inner oil film lubrication is insufficient, and cost is high; although an integrated bearing system realizes low cost and structure simplification, the key problems of sufficient lubrication of an inner oil film, high-temperature reliability of a thrust surface and oil control capacity of a gas compressor side are obviously short.

The invention provides a multi-pump zero-displacement hydraulic agile control system and a control method thereof. The system is composed of a hydraulic system, a mechanical system and an electric control system. According to the control method, a multi-pump zero-displacement switching mechanism and a deep reinforcement learning strategy based on an Actor-Critic architecture are fused, the effective oil supply amount is adjusted by dynamically starting and stopping part of hydraulic pumps, a servo motor rotating speed instruction is output in real time in combination with a neural network, and the strong coupling dynamic relation between sliding block displacement and the angle of a swing rod is coordinated. The system switches part of the pumps to a bypass state when approaching balance so as to reduce energy consumption, and starts all the pumps to guarantee recovery capacity when greatly deviating. According to the technical scheme, on the premise of not depending on an accurate mathematical model, agile, stable and energy-saving control over the inverted pendulum type under-actuated system can be achieved.

The invention belongs to the technical field of aircraft hydraulic pipeline pressure pulsation and vibration suppression design, and particularly relates to an aircraft hydraulic pipeline pressure pulsation and vibration suppression system and a design method thereof.The aircraft hydraulic pipeline pressure pulsation and vibration suppression system comprises a vibration absorber, a pressure accumulator, a rubber single-hole pipe clamp and a metal single-hole pipe clamp; the vibration absorber, the pressure accumulator, the rubber single-hole pipe clamp and the metal single-hole pipe clamp are arranged on the hydraulic pipeline, and the rubber single-hole pipe clamp and the metal single-hole pipe clamp are connected to the machine body structure through the pipeline support. An inlet of the hydraulic pipeline is connected with an outlet of the hydraulic pump, and an outlet of the hydraulic pipeline is connected with an inlet of the hydraulic load. The vibration absorber is arranged at an inlet of the hydraulic pipeline, close to an outlet of the hydraulic pump and located on the upstream of the one-way oil supply valve, and the pressure accumulator is arranged between the high-pressure oil filter and the hydraulic load; a plurality of rubber single-hole pipe clamps and a plurality of metal single-hole pipe clamps are distributed on the hydraulic pipeline.

The invention relates to a sliding wear performance evaluation method of a sliding bearing, a sliding wear testing machine and application. The method comprises the following steps: acquiring initial-state benchmark characterization of a sliding bearing sample, placing the sliding bearing sample at a test station of the sliding wear testing machine, outputting lubricating oil, collecting a process oil sample, and acquiring final-state characterization of the sliding bearing sample after the test is completed; on the basis of initial state benchmark characterization, process oil sample analysis data, final state characterization and working condition parameters applied by a sliding wear testing machine, the wear stage and the wear mechanism are analyzed, and the sliding wear performance of the sliding bearing is evaluated; a sliding shaft supporting module, a rotating power module, an oil supply lubricating module and a radial load pressurizing module are arranged on the testing machine matching platform; the method is applied to wear resistance evaluation of sliding bearings prepared by adopting different processes. According to the invention, the core working condition of the actual dynamic pressure bearing is accurately reproduced, the stability and durability of the test system are improved, and the occurrence, development and evolution process of wear is visualized and quantifiable.

The invention belongs to the field of target drone fuel oil systems, and particularly relates to a self-adaptive supersonic speed target drone fuel oil system and a control method thereof. The system comprises a machine body oil tank, a first electromagnetic valve, an overflow valve, a pressurization oil tank, a fuel pump, an engine pump, a monitoring module and a control module. The body fuel tank comprises a main fuel tank and an auxiliary fuel tank which are arranged in a fuel tank in the middle of the target drone body and located in front of and behind the theoretical mass center of the target drone respectively. The pressurization oil tank is additionally arranged in the fuel oil cabin, fuel oil in the engine body oil tank enters the pressurization oil tank for pressure maintaining after being pressurized by the fuel oil pump, and then oil is supplied to the engine from the pressurization oil tank, so that stable oil supply to the engine is achieved by establishing a local pressure environment instead of a large pressure environment of the whole fuel oil cabin, and therefore when a fuel oil system works, the fuel oil can be stably supplied to the engine. The oil supply flow and pressure are controlled in a closed-loop mode in real time through the control system according to the engine state.

The invention provides a driving system and a vehicle. The driving system comprises a shell assembly, a shaft assembly, a motor assembly, a planet row and a cooling and lubricating system. The shaft assembly is rotationally connected to the shell assembly through a bearing, and the motor assembly and the planet row are coaxially arranged on the shaft assembly and are in transmission connection with the shaft assembly. The cooling and lubricating system comprises an oil supply device, a first main oil way, a second main oil way and a third main oil way, one end of the first main oil way is communicated with the oil supply device, the other end of the first main oil way is communicated with the second main oil way and the third main oil way, an oil channel extending in the axial direction is formed in the shaft assembly, and a plurality of oil outlet holes are formed in the shaft assembly in the radial direction. The oil outlet holes are communicated with the oil channel, the second main oil way is communicated with the oil channel, at least one oil outlet hole is used for spraying oil to at least one of the motor assembly and the bearing, and at least part of the third main oil way is used for spraying oil to the planet row. The driving system actively cools and lubricates key components by reasonably arranging oil ways, and the cooling and lubricating effect is improved.

The utility model discloses a lubricating system of a gas turbine generator set and the gas turbine generator set, and relates to the field of power generation equipment. According to the lubricating system of the gas turbine generator set, the gas turbine generator set comprises a gas turbine, a generator and a vehicle body, the gas turbine and the generator are in transmission connection, the vehicle body is used for bearing the gas turbine and the generator, and the vehicle body is provided with a gooseneck; the lubricating system comprises a lubricating path and a second heat dissipation assembly, the lubricating path is used for supplying lubricating oil to the gas turbine and the generator, the second heat dissipation assembly comprises a second radiator, the second radiator is used for being arranged at the gooseneck and communicates with the lubricating path, and the lubricating path is used for supplying lubricating oil to the gas turbine and the generator. And the lubricating oil supplied by the lubricating path is radiated through the second radiator. The problem that the heat dissipation effect of lubricating oil is poor can be solved.

The invention discloses a self-adaptive test system and method for a hydraulic power unit, and the system comprises a test bench which is provided with a fixing tool for fixing the tested hydraulic power unit; the oil tank unit is arranged in the test bed and is used for supplying oil to and pumping oil from the tested hydraulic power unit; and the counterweight test unit is arranged in the test bench, the counterweight test unit comprises a counterweight module, and the counterweight module is connected with a working oil port of a tested hydraulic power unit through a first oil path. The device is simple in structure, directly simulates the real gravity load borne by the hydraulic execution mechanism through the counterweight module, and can accurately test the lifting and descending dynamic performance and the pressure maintaining internal leakage characteristic of the power unit under the load condition. The problems that a traditional back pressure method cannot truly simulate the gravity load, and descending speed control and energy recovery performance are difficult to evaluate are effectively solved.

Disclosed herein is an integrated in-line emergency lube pump assembly for a planetary gearbox, including a main lube pump, a coaxial lube pump coaxially aligned with and coupled to the planetary gearbox, and an oil tank having a main section and an auxiliary section. There is no physical boundary between the main section and the auxiliary section of the oil tank. When the detected pressure in the oil supply line is equal to or exceeds a predetermined pressure threshold, the main lube pump operates to causes the main pump to pump oil from the main section of the oil tank to the planetary gearbox. Alternatively, when the detected pressure in the oil supply line is less than the predetermined pressure threshold the main lube pump ceases operation to cause the coaxial lube pump to draw oil from the auxiliary section of the oil tank to the planetary gearbox.

A turbocharger capable of improving local oil supply and negative pressure oil leakage capacity relates to the technical field of turbochargers and comprises a thrust bearing plate arranged between a shaft seal and a thrust sleeve. Thrust oil wedges are arranged on the opposite side walls of the thrust bearing plate, an oil supply channel is formed in the thrust bearing plate and comprises a first oil collection cavity and a second oil collection cavity which are sequentially and annularly arranged from outside to inside, and first oil collection cavity oil outlet holes communicated with the first oil collection cavity are formed in the opposite side walls of the thrust bearing plate correspondingly. And the second oil collecting cavity oil outlet hole is communicated with the second oil collecting cavity. The thrust bearing solves the problem that in the prior art, oil supply is relatively thin in the area with high bearing capacity on the thrust surface of the thrust bearing; and in order to avoid the reliability problem of dynamic and static interference, a gap between a dynamic piece and a static piece forming a labyrinth structure needs to be designed to be large enough, so that the negative pressure resistance oil leakage of the labyrinth structure is limited.

The invention discloses a low-noise stable planetary gear speed reducer, and relates to the technical field of speed reducer equipment. Comprising a main body mechanism, the main body mechanism comprises a main body bin, a front cover is fixedly buckled on one side of the main body bin, and a rear cover is fixedly buckled on the other side of the main body bin; a gear ring is fixedly connected to the middle of the inner wall of the body bin. A discharging assembly is arranged on the lower wall of the body bin. A tailstock mechanism is arranged on one side of the main body mechanism; an oil conveying mechanism is arranged on the other side of the main body mechanism; an oil injection assembly is arranged between the main body mechanism and the tailstock mechanism, the oil injection assembly comprises an oil tank mechanism, and nozzle mechanisms inserted into the main body bin are uniformly communicated with the oil tank mechanism at equal intervals; the oil tank mechanism comprises an oil tank, a tank cover is fixedly buckled to one side of the oil tank, the tank cover is fixedly connected with a rear cover, an input assembly is arranged on one side of the upper wall of the oil tank, impurities hidden in tooth seams can be flushed out and flow out along with leaked oil, and the impurity removing performance is improved.

[Problem] Reduction of the stirring resistance that arises in a motor in a coolant circulation system in which an oil-containing coolant circulates to cool and lubricate the motor.[Means of solution] A coolant circulation system 100 comprises: a motor 4 with a rotor 41, a stator 42, a rotating shaft 43 and plain bearings 44; a gas-liquid separator 12, which separates a coolant into CO2 and oil; a CO2 passage 22b, through which the CO2 separated by the gas-liquid separator is supplied to a gap between the rotor and the stator to cool the rotor and the stator; mixing channels 24a, through which a mixture of the CO2 and the oil, obtained by mixing the CO2 and the oil separated by the gas-liquid separator, is supplied to gaps between the rotating shaft and the plain bearings to lubricate the plain bearings; and mixing channels 24b, through which the CO2 supplied to the rotor and the stator from the CO2 channel 22b and the mixture of CO2 and oil supplied to the sliding bearings 44 from the mixing channels 24a are returned to the gas-liquid separator.

The invention relates to the hydraulic technical field of hydraulic engineering, and discloses a hydraulic cylinder intelligent oil supply control system and method applied to hydraulic engineering. The system comprises a hydraulic parameter acquisition module, a data fusion processing module, a manifold state modeling module, a dynamic risk prediction module and a self-adaptive oil supply control module. The hydraulic parameter acquisition module is used for acquiring multi-point oil pressure, piston displacement and oil supply flow monitoring signals in real time; the data fusion processing module is used for fusing the multi-source heterogeneous signals; the manifold state modeling module constructs a hydraulic cylinder operation state Riemannian manifold geometric model based on the fusion signal; the dynamic risk prediction module calculates a real-time abnormal aggregation degree index according to the geometric feature vector; and the self-adaptive oil supply control module generates an oil supply control instruction according to the abnormal aggregation degree index. The system can comprehensively sense the operation state of the hydraulic cylinder, accurately model and predict risks, dynamically adjust oil supply parameters, and meet the requirements of modern hydraulic engineering operation.

The invention relates to a PCB vertical vacuum hole plugging machine which comprises an LCS ink supply system and a hole plugging system, the LCS ink supply system is connected with the hole plugging system, the LCS ink supply system comprises a high-vacuum bin, a filtering device, a stirring defoaming device, an oil supply assembly and a station switching assembly, the filtering device is arranged on the outer side of the high-vacuum bin, and the stirring defoaming device is arranged on the outer side of the high-vacuum bin. The station switching assembly, the stirring and defoaming device and the oil supply assembly are arranged in the high-vacuum bin body, a filtering station corresponding to the filtering device is arranged in the high-vacuum bin body, a stirring and defoaming station corresponding to the stirring and defoaming device is arranged in the high-vacuum bin body, an oil supply station corresponding to the oil supply assembly is arranged in the high-vacuum bin body, and the oil supply assembly is connected with the hole plugging system; the rear chock plug is designed to be capable of automatically ascending and descending, automatic face turning and hole plugging can be achieved for double-face blind holes, double-face back drilling plates and the like, and the more automatic hole plugging capacity is achieved. According to the PCB vertical vacuum hole plugging machine, high-automation production of ink recovery, filtering, defoaming, oil supply and automatic turn-over hole plugging of the PCB vertical vacuum hole plugging machine is achieved, and the production efficiency is improved.

The invention relates to the technical field of loader hydraulic systems, in particular to a multi-pump multi-valve energy-saving hydraulic system and a control method. The invention provides a multi-pump multi-valve energy-saving hydraulic system, a steering pump and working pumps (a bucket pump and a movable arm pump) are independently controlled, a multi-pump distributed configuration is adopted, working devices (a bucket oil cylinder and a movable arm oil cylinder) are independently supplied with oil by the working pumps (the bucket pump and the movable arm pump), a steering gear is independently supplied with oil by the steering pump, and the working devices are independently supplied with oil by the working pumps (the bucket pump and the movable arm pump). And the influence of coupling throttling loss between a steering system and a working system and load change on steering controllability is eliminated. Moreover, when the movable arm and the bucket act singly, the bucket pump and the movable arm pump realize the single action parallel flow of the movable arm and the bucket through the auxiliary control valve, so that the working speed of a single actuator is ensured, particularly, the large-flow lifting parallel flow of the movable arm is realized, and the throttling loss is greatly reduced; when the movable arm and the bucket act in a composite mode, the bucket pump and the movable arm pump achieve independent oil supply of the movable arm and the bucket through the auxiliary control valve, and the controllability of the whole machine is improved.

The invention relates to the technical field of hydraulic element testing, in particular to a high-pressure axial plunger pump bearing bush pair interface friction and oil film characteristic testing device. According to the device, 10-60 MPa adjustable oil pressure is provided through the hydraulic pipeline unit, the driving unit achieves power loading and friction monitoring through a servo motor and a torque sensor, the main body unit conveys high-pressure oil to a bearing bush contact face through an in-shaft cross-shaped oil duct structure to form a static pressure supporting oil film, and a micron-sized oil film sensor is integrated; the oil detection unit monitors oil parameters, and the signal acquisition and control unit performs closed-loop regulation on oil supply flow, motor rotating speed and swash plate load based on oil film thickness, torque and pressure signals. The method has the beneficial effects that 0.2 mu m-level oil film fracture identification is realized, the occurrence rate of dry friction is reduced by 82% through a cross-shaped oil duct in the shaft, and the oil film fluctuation rate lt is cooperatively controlled through multiple parameters; + / -3%, the safety interlocking mechanism responds abnormally within 0.3 s.

The invention provides a middle-sized unmanned aerial vehicle structure and function integrated grating oil tank capable of being automatically and integrally formed and a forming method, and relates to the field of unmanned aerial vehicle structure design. The oil tank body is formed by integral compression molding of an upper skin and a lower skin, the grating separation layer is co-cured with the skins through insert injection molding by chopped carbon fiber reinforced thermoplastic resin to form honeycomb grids, and the oil inlet and outlet connector is an aluminum alloy flange and is fixed to the bottom of the oil tank through welding of aluminum alloy and thermoplastic composite materials. Based on the long and short fiber mixed integrated oil tank design and process technology, full-automatic integrated forming of the main bearing shell can be achieved, the oil tank skin guarantees the bearing capacity through the long continuous fiber composite material, the oil tank grating is made of the chopped fiber composite material, and the functions of sequential oil supply, overload resistance, shaking prevention and the like are achieved; and the number of oil tank parts is greatly reduced, and the potential of full-automatic manufacturing is achieved.

The utility model belongs to the technical field of hydraulic pipe cleaning, and particularly discloses a hydraulic pipeline oil string washing device which comprises an oil tank, an oil supply pipeline, an oil inlet pipeline, an oil return pipeline and a cooling loop. The oil supply pipeline comprises a lightering oil pump, an oil supply valve and an oil supply main pipe; the oil inlet pipeline comprises a circulating oil pump, a first oil inlet header pipe and a first oil inlet control valve are arranged between the oil tank and the circulating oil pump, and a second oil inlet header pipe, a one-way valve and a second oil inlet control valve are arranged between the circulating oil pump and the cleaned pipeline system; the oil return pipeline comprises a fine filter, a first oil return header pipe is arranged between the cleaned pipeline system and the fine filter, a second oil return header pipe is communicated between the fine filter and the oil tank, first oil outlet control valves are arranged on the first oil return header pipe and the second oil return header pipe, the fine filter is further communicated with an impurity removal control valve, and the impurity removal control valve is communicated with an impurity removal header pipe. According to the device, safe and reliable cleaning can be provided for pipeline systems with different pressure bearing and precision requirements, and the oil temperature can be controlled to achieve the optimal cleaning effect.

The invention discloses a lubricating structure for a wind power gear box, the gear box and wind power equipment, and the lubricating structure comprises a main oil supply part which comprises a main oil way extending in the axial direction of the main oil supply part and a plurality of oil through holes communicating with the main oil way and supplying oil to an outer side rotating part in the radial direction; the first oil supply assembly comprises a first supporting piece and an oil inlet pipe, and one end of the oil inlet pipe communicates with an inner cavity of the first supporting piece and the oil through hole; and the second oil supply assembly comprises a secondary oil inlet ring arranged on the main oil supply piece in a sleeving mode and a second supporting piece arranged on the outer side of the secondary oil inlet ring in a sleeving mode, a secondary oil way surrounding the main oil supply piece is formed between the secondary oil inlet ring and the main oil supply piece, and the secondary oil way communicates with the oil through hole on one hand and communicates with an inner cavity of the second supporting piece on the other hand. The main oil supply part, the first oil supply assembly and the second oil supply assembly are arranged in the hollow area in the gearbox, and oil ways are communicated, so that frictional wear generated by relative rotation of the oil supply assemblies in the lubricating oil inlet structure of the wind power gearbox can be avoided or reduced.

The utility model provides a chain saw, which comprises an oil liquid supply system, an oil liquid supply system, an oil liquid supply system, an oil liquid supply system and an oil liquid supply system, and the oil tank is used for storing oil liquid and comprises an oil liquid outlet and an oil liquid inlet; the first end of the oil outlet pipe is connected with the oil liquid outlet; the first end of the oil supply pipe is arranged towards the to-be-lubricated component; the oil pumping assembly comprises a pump body inlet and a pump body outlet, the pump body inlet is connected with the second end of the oil outlet pipe, and the pump body outlet is connected with the second end of the oil supply pipe; the oil pumping assembly can be switched between the forward rotation state and the reverse rotation state so that oil in the oil tank can be pumped out through the oil outlet pipe and supplied to a to-be-lubricated part through the oil supply pipe, or oil in the oil supply pipe can be sucked out and conveyed back into the oil tank through the oil outlet pipe. And residual lubricating oil in the oil pipe may overflow.

The invention relates to the technical field of linear motors, in particular to a T-shaped mover linear motor with a self-lubricating function, which comprises a rack and a mover motor, a load platform is mounted at the top of the mover motor, and guide blocks which are symmetrically distributed are fixed on the inner wall of the load platform; guide grooves which are symmetrically distributed and matched with the guide blocks are formed in the side wall of the rack, oil storage cavities which are symmetrically distributed are formed in the load platform, oil outlet holes are formed in the guide blocks in a penetrating mode, one end of each oil outlet hole is communicated with the corresponding oil storage cavity, and an oil storage tank is arranged on one side of the rack and connected with an automatic oil supplementing mechanism. Wherein an oil supply mechanism is arranged in the oil storage cavity; according to the linear motor, in the reciprocating motion process of the rotor, the oil supply mechanism can continuously discharge the lubricant in the oil storage cavity from the oil outlet hole and uniformly smear the lubricant on the surface of the guide groove to achieve self-lubrication, the automatic oil supplementing mechanism automatically supplements the lubricant to the oil storage cavity, manual intervention is not needed in the whole process, and the stability and maintenance-free performance of equipment operation are remarkably improved.

The invention belongs to the technical field of injection molding machine mold closing systems, and particularly relates to an injection molding machine movable mold plate position control hydraulic system. A movable mold plate position control method is applied to a movable mold plate position control hydraulic system of an injection molding machine and comprises the following steps: a pressure building step: supplying oil to a rod cavity of a pressure oil cylinder, closing a main valve, retracting a piston rod, driving a movable mold plate to move, and entering a pressure maintaining stage after a preset value is reached; oil supply to the rod cavity is stopped, the first electromagnetic reversing valve is controlled to be powered on, oil of the pilot control oil way flows through the liquid resistance network, and pressure is released through the liquid resistance network to guarantee that a valve element of the main valve is stable and free of impact; the piston rod is pulled to extend out, the oil in the rod cavity is decompressed, and oil is supplemented to the rodless cavity; and adjusting the position of the movable template: controlling a reversing valve group to switch on and off an oil path, and enabling the pressure oil cylinder to be in differential connection so as to adjust the position of the movable template.

The invention relates to the technical field of die-casting machines, in particular to a die-casting machine rapid energy storage device, a control method and a die-casting machine, the energy storage device comprises a control unit, an oil supply unit, an energy storage unit, a first pressure collection unit used for collecting the output pressure of the oil supply unit, and a second pressure collection unit used for collecting the internal pressure of the energy storage unit; the control unit is respectively connected with the first pressure acquisition unit and the second pressure acquisition unit; the oil supply unit is communicated with the energy storage unit to convey hydraulic oil; the control unit is configured to control the oil supply unit to be in a speed control mode in the energy storage stage of the die-casting machine so that the oil supply unit can operate according to a preset speed instruction, and meanwhile, according to the first pressure value of the first pressure collection unit and the second pressure value of the second pressure collection unit, a pressure control instruction output to the oil supply unit is adjusted in real time. Therefore, the energy storage stage time of equipment is shortened, the production period of the equipment is relatively shortened, and the speed ring and the pressure ring of the servo oil pump are used in cooperation.

The invention provides a direct ignition baffling combustion chamber and an engine, and belongs to the technical field of aero-engines, the direct ignition baffling combustion chamber comprises a cartridge receiver, an oil supply assembly, an oil flinger and an ignition device, the cartridge receiver comprises an outer cartridge receiver, an inner cartridge receiver, a flame tube outer ring and a flame tube inner ring cavity; an oil supply assembly on the cartridge receiver is provided with an oil spraying hole; the oil flinger is rotationally arranged at the oil spraying hole of the oil supply assembly; the ignition end face of the ignition device extends to the gas side of the flame tube inner ring. Fuel oil is conveyed into the oil flinger through the oil spraying hole of the oil supply assembly, the ignition end face of the ignition device extends to the inner ring gas end of the flame tube, an oil mist cone atomized by the oil flinger can be directly beaten to the position close to the ignition end face, the oil mist cone can be directly ignited, and high-reliability ignition of the combustion chamber can be achieved without additionally arranging an auxiliary ignition device. According to the direct ignition baffling combustion chamber, the problem that an auxiliary ignition device needs to be arranged when an indirect ignition mode is adopted in a baffling combustion chamber in the prior art is solved.

The utility model provides an anti-lock brake upper pump assembly. The anti-lock brake upper pump assembly comprises a pump support, an oil cup, a lining, a push rod, a pressure relief hole and the like. When the push rod moves, the auxiliary oil supply hole and the pressure relief hole are communicated or blocked, the multi-time snub effect is achieved, and wheel locking is avoided. By arranging the communicating oil supply hole, the circulating communicating hole, the pressure retaining valve rod and other structures, the oil flowing path is optimized, the braking response speed is increased, and the oil utilization rate is increased. Meanwhile, the design of a first limiting gasket, a reset spring, teeth and the like is adopted, and the stability and reliability of the braking system are enhanced. The assembly is compact in structure, good in braking effect and suitable for various vehicle braking systems.

An oil supply system, has: an oil tank; a closed-loop oil circuit including a component, a pump having a pump inlet and a pump outlet, and a de-aerator; a make-up flow conduit connecting the oil tank to the closed-loop oil circuit; a make-up pump connected to the closed-loop oil circuit; a recirculation conduit in parallel to the make-up pump and bypassing the make-up pump; a fixed orifice fluidly connected to the make-up flow conduit upstream of the closed-loop oil circuit and downstream of the recirculation conduit, the fixed orifice having an area selected to increase a pressure at an outlet of the make-up pump above a pressure at the de-aerator inlet; and a metering orifice connected on the recirculation conduit and having a flow circulating area selected to reduce a flow rate inputted into the closed-loop oil circuit below a flow rate generated by the make-up pump.

The disclosure discloses an oil circuit system, a lifting device, an electric jack, a press, a crane, and a tire mounting / dismounting and transport apparatus. The oil circuit system comprises a lifting oil cylinder, the tank, the first oil feed line, the second oil feed line, the oil inlet / outlet line, the pressure relief line, the oil return line, the first valve, the second valve; the first oil feed line is the gear pump assembly oil feed line; and the second oil feed line is the plunger pump assembly oil feed line. Under no-load or low-pressure conditions of the lifting device, the gear pump assembly can quickly pump a larger volume of low-pressure hydraulic oil, enabling quick lifting or lowering of the lifting device. Under high-pressure conditions, the plunger pump assembly can quickly pump higher pressure hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.

The invention relates to the technical field of product oil management, and discloses a product oil purchase-sale-stock multi-modal data analysis method and system. The method comprises the following steps: acquiring real-time inventory data, transportation state data and sales terminal data in a product oil supply chain to form a multi-modal data set; performing data cleaning on the data, and extracting key inventory characteristics to generate a cleaned data subset; obtaining associated historical purchase data, regional demand prediction data and market price fluctuation data based on the gas station identification information to form a multi-dimensional auxiliary data set; inputting the features into an inventory feature extraction model, generating a multi-feature vector set, and fusing the multi-feature vector set; inputting the fused feature vectors into an inventory state evaluation model set, and outputting inventory early warning level and abnormal type information; and finally, a dynamic allocation scheme is generated by combining real-time inventory data and the like. According to the method, multi-modal data are integrated, so that the comprehensiveness and accuracy of data analysis are improved, and the purchase-sales-stock management of the product oil is assisted to be more suitable for market dynamics.