14180 results about "Oil tank" patented technology

The invention discloses a deep sea underwater electro-hydraulic actuator (EHA) and a control system thereof. The system provides power through the power source module, balance of system oil pressure and pressure of external seawater is controlled through the pressure compensation module, oil circulation and oil pressure control are conducted through the integrated valve set module, a control instruction of the control module is executed through the execution mechanism module, and the control module conducts cooperative control over the whole system. According to the control system, the unbalanced pressure between the system and the deep sea high-water-pressure environment is compensated through the pressure compensator so as to reduce the influence of the deep sea high-water-pressure environment, meanwhile, the pressure compensator serves as an oil tank to supply oil, miniaturization of the system is achieved, and the reliability of the system during underwater work is improved; according to the deep-sea underwater electro-hydraulic actuator, the mounting positions and internal flow channels of all elements of the integrated valve bank are optimized, the pressure loss of fluid in the flow channels is reduced, and the energy utilization efficiency of the deep-sea underwater electro-hydraulic actuator is improved; the asymmetric hydraulic cylinder can operate in four working conditions of deep sea, and underwater high-precision movement can be completed.

The invention relates to the technical field of path planning, in particular to a multi-unmanned aerial vehicle oil depot storage tank inspection intelligent optimization method based on a layering strategy. The method comprises the following steps: constructing an equivalent terrain mathematical model according to oil depot storage tank characteristics, and establishing a multi-objective optimization objective function; performing global path planning inspection of multiple unmanned aerial vehicles by using an improved wolf pack optimization algorithm; abnormities are monitored through a carried sensor, and abnormal information is uploaded to a terminal; the terminal issues the target abnormal point to the single unmanned aerial vehicle; performing single-machine local path optimization by adopting an improved particle swarm optimization algorithm; and updating the state of the inspection task. According to the method, global path planning and local path optimization are effectively combined through a layered inspection strategy, the defects of a traditional method in inspection full coverage and local emergency response are overcome, the intelligent and efficient level of an unmanned aerial vehicle inspection system is improved, and the method is suitable for complex oil depot storage tank inspection tasks and emergency disposal scenes.

The invention relates to a transformer multi-physics field coupling numerical simulation method and device and a storage medium. The method comprises the following steps: performing coupling calculation on a target working condition by using an electromagnetic, heat, flow and force coupling calculation model of a transformer to obtain transformer loss data and temperature rise data; mapping the temperature rise data to a transformer electromagnetic and force coupling calculation model by using a grid node data mapping method to serve as an initial value, and performing coupling calculation on a target working condition to obtain dynamic data of an internal structural member of the transformer; performing fast Fourier transform on the dynamic data in a preset frequency range to obtain dynamic data under each frequency; and mapping the temperature rise data and the dynamic data under each frequency to a transformer sound and force coupling calculation model as initial values, and carrying out coupling calculation on a target working condition to obtain transformer oil tank vibration and external noise data. Compared with the prior art, the method has the advantages that the calculation amount is effectively reduced, and the accuracy of predicting the internal state of the transformer is improved.

The invention relates to the technical field of power transformer state monitoring, and discloses a main transformer winding temperature rise on-line monitoring method and system, and the method comprises the steps: obtaining the calibration flight time of ultrasonic waves through an acoustic sensor array disposed on the outer wall of an oil tank in a quasi-isothermal state of a transformer; calculating a structure additional time delay which is caused by an internal fixed structure and does not change along with the temperature, and establishing an acoustic fingerprint for the transformer; during on-line monitoring, oil way net propagation time reflecting temperature change of the insulating oil is obtained from on-line flight time measured in real time; and then, based on the net propagation time of the oil way, an acoustic tomography algorithm is adopted to reconstruct internal two-dimensional or three-dimensional temperature field distribution, and the winding hot-spot temperature is finally and accurately calculated in combination with the real-time load current. According to the invention, through the acoustic fingerprint correction technology, the measurement interference of an internal fixed structure is eliminated, and non-intrusive, high-precision and visual online monitoring of the winding hot-spot temperature is realized.

The invention provides a transformer partial discharge ultrasonic propagation simulation model construction method and system, and the method comprises the steps: defining a geometric model of a transformer, which is a three-dimensional model of an oil-filled transformer oil tank with a winding and an iron core; setting a sound field module and defining a sound source, and placing the sound source as a partial discharge source in the geometric model of the transformer; a hard boundary condition is applied to the surface of the geometric model tank of the transformer, reflection of the geometric model tank to sound pressure waves is obtained, and under the hard boundary condition, the normal derivative of pressure is zero at the boundary; performing grid division on the geometric model body of the whole transformer by adopting tetrahedral grid units; and after solving, further processing to obtain model parameters, wherein the model is used for displaying the distribution of the ultrasonic sound pressure in the transformer.

An upper revolving structure (4) of an electric hydraulic excavator (1) includes a revolving frame (7), an operator's seat (10), an electric motor (15), a hydraulic pump (17) driven by the electric motor (15), an oil tank (18), and an exterior cover (20) disposed in the revolving frame (7) to cover electrical equipment including the electric motor (15) and hydraulic equipment including the hydraulic pump (17) and the oil tank (18). A partitioning member (25) that is disposed in the revolving frame (7) to partition an inside of the exterior cover (20) into an electrical equipment room (28) and a hydraulic equipment room (29). An electrical equipment cooling device (31) including an electrical equipment cooling fan (34) is disposed in the electrical equipment room (28), and a hydraulic equipment cooling device (35) including a hydraulic equipment cooling fan (37) is disposed in the hydraulic equipment room (29).

The invention discloses a methanol generator flywheel assembling device and method, and relates to the technical field of generator flywheel assembling. The flywheel assembling device comprises a lifting seat, a clamping seat is mounted at the top of the lifting seat, a first oil tank is mounted below the outer side of the clamping seat, a clamping assembly is mounted at the top of a piston rod in the first oil tank, a first corrugated pipe and a second corrugated pipe are connected to the bottom of the first oil tank, and a hammering seat is mounted at the top of the lifting seat. A hammering block is longitudinally and slidably installed on the side edge of the top of the hammering base, a telescopic connecting rod is rotatably installed at the center position of the bottom of the hammering block, the bottom end of the telescopic connecting rod is rotatably connected with the bottom of the hammering base, a hammering assembly is installed on the side wall of the hammering base, and a moving assembly is installed on the inner wall of the bottom of the hammering base. A traditional manual hammering flywheel installation mode is replaced, the flywheel installation efficiency is improved, the labor cost is reduced, and the labor intensity of workers is relieved.

Methods and systems are provided for a lubricating apparatus for a gearbox. In one example, an apparatus may include a curved shroud enclosing a portion of a gear, a first side oil collector and a second side oil collector, an oil reservoir having a first end fluidly coupled to the first side oil collector and a second end fluidly coupled to the second side oil collector, and a metering orifice fluidly coupling the oil reservoir to the curved shroud. The oil reservoir further includes at least two U-turns between the first end and the second end, and walls of the oil reservoir having multiple cavities.

The invention relates to the technical field of grease detection, discloses a method for detecting the height of grease in an oil tank and sampling, and aims to solve the problems of high labor intensity and low operation efficiency and accuracy in the conventional method for detecting the height of grease in the oil tank. Controlling the gear motor to drive the reel to rotate, so that the plumb bob descends from the initial position at a constant speed, and acquiring a pressure value detected by the tension sensor in real time when the plumb bob descends; according to the pressure value, the starting moment when a plumb bob makes contact with the liquid level and the ending moment when the plumb bob makes contact with the tank bottom are determined, the descending length of the lifting rope between the starting moment and the ending moment is determined, and the descending length is the height of grease in the oil tank. According to the invention, the labor intensity of grease height detection and sampling is reduced, and the working efficiency and accuracy are improved.

The invention discloses a closed monitoring control system for a hydraulic motor. The closed monitoring control system comprises the hydraulic motor, a main pump, an oil tank, a control loop and a monitoring module, the main pump is suitable for pumping oil in the oil tank to the hydraulic motor so that the hydraulic motor can convert hydraulic energy into mechanical energy to be output. The monitoring module is suitable for detecting the working state of the hydraulic motor, and the control loop is suitable for controlling the displacement of the main pump according to the detection result of the monitoring module. The control method has the beneficial effects that the working state of the hydraulic motor is detected, and the working state of the main pump is controlled according to the detection result, so that when the hydraulic motor is abnormal, the output rotating speed of the hydraulic motor can be reduced in time or the hydraulic motor is directly shut down, and the operation safety of the hydraulic motor can be effectively guaranteed.

The present invention belongs to the technical field of cable stranding, and specifically relates to a cable stranding machine, which includes a wire placement rack. A wire installation roller is rotatably installed on the wire placement rack. One end of the wire placement rack is rotatably connected to a wire pipe. A first gear, a protective wire placement disk, a guiding disk, and a stranding disk are sequentially and fixedly sleeved on the wire pipe. A die head is placed directly in front of the wire pipe. The first gear meshes with a second gear, and the end of the second gear is rotatably connected to the wire placement rack. By driving the guiding disk to rotate, the wire wheels in the six installation slots on the guiding disk can sequentially come into contact with the lubricating oil in the oil tank. The protective wire is lubricated by the wire wheels attached with lubricating oil, realizing the lubrication of the protective wire, reducing the friction between the wire wheels, the perforations and the protective wire, thereby greatly reducing the wear of the protective wire and improving the quality of cable manufacturing.

The utility model discloses a cable stranding device, which relates to the technical field of cable processing, and comprises a bottom frame, the top of the bottom frame is fixedly connected with a first fixing plate, the interior of the first fixing plate is fixedly connected with an oil brushing disc, the interior of the oil brushing disc is provided with a plurality of mounting holes, the interior of the oil brushing disc is provided with an oil brushing assembly, and the oil brushing assembly is fixedly connected with the bottom of the bottom frame. A first fixing plate is fixedly connected to the top of the bottom frame, a second fixing plate is fixedly connected to the top of the bottom frame, a twisting assembly is arranged in the second fixing plate, a supporting rod is fixedly connected to the top of the bottom frame, a collecting ring is fixedly connected to the top of the supporting rod, a fixing frame is fixedly connected to the top of the first fixing plate, and an oil storage tank is fixedly connected to the interior of the fixing frame. According to the utility model, the lubricating oil can be uniformly coated on the surface of the cable through the oil brushing assembly, so that the friction between the cable and the through hole and the collecting ring can be reduced, the cable is prevented from being damaged, and the abrasion of the through hole and the collecting ring is also reduced.

The invention discloses a hybrid power supply power distribution method for an extended-range power supply vehicle, and relates to the technical field of intelligent power distribution, and the method comprises the steps: determining an external power supply demand state of a current extended-range power supply vehicle; determining the current running state of the extended-range power supply vehicle based on the running state of an engine and the real-time rotating speed of a motor of the extended-range power supply vehicle; obtaining the current state of charge of a power supply battery of the range-extended power supply vehicle and the current state of a range extender oil tank; based on the external power supply demand state, the driving state, the power supply battery charge state and the range extender oil tank state, the power supply mode of the range-extended power supply vehicle is determined; predicting a short-term power demand of the extended-range power supply vehicle according to the real-time vehicle speed of the extended-range power supply vehicle and an external power supply load, inputting the short-term power demand into a preset reinforcement learning model, and determining a hybrid power distribution proportion by taking the lowest energy consumption as a target based on a power supply mode; and adjusting the generated power of the range extender and the output power of the power supply battery based on the hybrid power distribution proportion through the hierarchical state machine.

The invention relates to the field of marine transformers, and discloses a marine transformer with a protection mechanism, the marine transformer comprises a transformer oil tank and a mounting seat, the transformer oil tank is arranged above the mounting seat, a movable supporting structure is arranged in the middle of the upper surface of the mounting seat, and the transformer oil tank is arranged on the mounting seat through an external protection structure; a mounting frame is fastened in the middle of the lower inner wall of the transformer oil tank, a winding is mounted on the mounting frame, and oil sliding up and down in the transformer oil tank can be blocked through an internal protection structure when the ship body shakes up and down to drive the oil to slide, so that the upper side face and the lower side face of the transformer oil tank are protected; the problem that the upper side face and the lower side face of the transformer oil tank deform due to impact is reduced, the upper side face and the lower side face of the transformer oil tank can be protected outside the transformer oil tank through the external protection structure and the auxiliary protection structure, and the protection effect is better.

The utility model relates to the technical field of reinforcing steel bar processing, and discloses a special hoop bending machine for reinforcing steel bar processing, which comprises a frame, a hydraulic clamp is arranged in the middle of the frame, a plurality of straightening guide wheels are rotatably connected to the front side of the frame, and the straightening guide wheels are symmetrically distributed up and down. Wherein the middle portions of the two straightening guide wheels are fixedly connected with first gears through rotating shafts, the two first gears are meshed, the inner top wall of the frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a cam, and the middle portion of one first gear is fixedly connected to the side, away from the first motor, of the cam. According to the utility model, when steel bars are straightened and conveyed along with the operation of the hoop bending machine, lubricating oil can be continuously pumped out of the oil tank and fed into the hoop bending assembly for lubrication by virtue of the matching of the cam and the piston, so that the abrasion of the hoop bending machine during working is reduced, the service life of the hoop bending machine is prolonged, and the stability of the hoop bending machine during working is ensured; and the hoop bending precision is improved.

The invention relates to the technical field of gear oil injection, and provides a power plant coal mill bull gear oil spraying device which comprises an oil storage tank used for storing oil, one side of the oil storage tank is communicated with a pump body provided with two liquid outlets, the two liquid outlets of the pump body are communicated with a spraying assembly in a coal mill gearbox through oil injection pipes, and the spraying assembly is communicated with the oil storage tank. The spraying assembly is driven by an electric push rod to be stored, a cavity is formed in the other side of the oil storage tank, a motor is installed in the cavity, and two cooling pipes in the oil storage tank are located on the outer wall of the motor in a spiral mode so that energy transmission between the cooling pipes and the motor can be achieved. The phenomenon that the spray head is blocked due to exposure in air is avoided, the spraying efficiency of lubricating oil is ensured, meanwhile, the flowability and the lubricating performance of the lubricating oil are ensured through energy conversion, the lubricating effect is improved, gear abrasion is reduced, the service life of the gear is prolonged, and on the contrary, a certain cooling effect can be achieved on the motor.

The invention discloses an oil storage tank oil-water interface measurement system and method and a storage medium, and relates to the technical field of oil-water interface measurement, and the system comprises a data acquisition module, a data processing module, a decision support module and a data security module. According to the oil-water interface measuring system and method for the oil storage tank and the storage medium, a three-dimensional sensing network (distributed sensor network) is constructed by adopting a pressure sensor array and phased array ultrasonic scanning technology and combining dielectric property detection of a microwave dielectric constant sensor; the pressure, the dielectric constant, the liquid level and the vibration data in the tank body are obtained, basic data are provided for subsequent processing, the comprehensiveness of data obtaining can be improved through the sensing network, the pressure data are dynamically calibrated through Takagi-Sugeno fuzzy logic, the influence of temperature drift is effectively eliminated, and the accuracy of data obtaining is improved. The ultrasonic signals are subjected to feature enhancement through the generative adversarial network, and the emulsion layer boundary is accurately recognized.

The invention belongs to the technical field of transformer heat dissipation, and particularly relates to a transformer finned radiator convenient to maintain, which comprises an oil tank, a shell, an electric turntable and the like, a wind direction sensor is arranged on the oil tank; an oil tank is fixedly connected inside the shell; a chamber is arranged between the shell and the oil tank; the chassis is fixedly connected with an electric turntable, and a rotating part of the electric turntable is fixedly connected with the shell; a plurality of air inlets are formed in the surface of the shell, and air outlets opposite to the air inlets are formed in the surface of the shell; a plurality of cooling fins are fixedly connected to each side of the oil tank, cavities are formed in the cooling fins, and the cooling fins penetrate through the shell; a plurality of ventilation holes are formed in the portion, located in the cavity, of the cooling fin. The heat dissipation device has the advantages that in the heat dissipation process, the electric rotating disc drives the oil tank and the shell to rotate, external air is introduced into the cavity and flows in the cavity, cooling oil and cooling fins in the oil tank are subjected to primary heat dissipation, and the heat dissipation effect is improved.

The invention relates to the technical field of transformers, in particular to a high-safety transformer which comprises a transformer body and a monitoring mechanism, and the monitoring mechanism comprises a processor, a base, a control core, a driving wheel and a visual assembly. The base is provided with a containing cavity, an input flow channel and an output flow channel, the input flow channel and the output flow channel extend to the containing cavity, and the other ends of the input flow channel and the output flow channel communicate with an oil tank. A filtering assembly is arranged in the output flow channel, and the visual assembly is embedded in the inner wall of the output flow channel. The control core is rotationally matched with the containing cavity and provided with a radial through hole, and a control rod is arranged in the radial through hole in a sliding fit mode. The driving wheel is rotatably matched with the base. One end of the control rod is eccentrically hinged to the driving wheel. The visual component is used for acquiring image data of the surface of the filter component, and the processor is used for evaluating the impurity content in the insulating oil according to the impurity quality of the surface of the filter component. According to the utility model, the automatic monitoring of the insulating oil can be realized in the operation process, prompts can be given out in time, and the safety supervision strength is effectively improved.

The invention discloses an opening and closing hydraulic system and a control method. The system comprises an oil cylinder, an oil tank, an energy accumulator, a pump set, a detection module, an opening and closing loop and an adjusting loop. The connecting end of the opening and closing loop is connected with a rod cavity and a rodless cavity of the oil cylinder, and an oil inlet of the opening and closing loop is in redundant connection with the energy accumulator and the pump set. The detection module is used for monitoring the slurry outlet amount of a material opening and the position of an oil cylinder; the adjusting loop is connected to the opening and closing loop in parallel and suitable for controlling the oil cylinder to adjust the opening degree of the material opening according to the monitoring result of the detection module. The method is applied to the system. The device has the beneficial effects that the opening degree of the material opening can be accurately controlled through the adjusting loop, and manual adjustment is not needed; and closed-loop control is performed through the flow rate of slurry at the material port, the opening degree of the material port is adjusted in real time, and the stability of the discharging amount is ensured.

The invention discloses an oil supply control system of a hydraulic pump station, and relates to the technical field of hydraulic systems. The oil supply control system of the hydraulic pump station comprises an oil tank; the oil inlet end of the oil supply pump communicates with the oil tank, and the oil outlet end of the oil supply pump is connected to the oil suction end of the variable plunger pump through an oil supply path; a heat exchanger and a filter are sequentially arranged in the oil supply path and used for conducting temperature adjustment and particle filtration on oil. The oil supply path is connected with a bypass pipeline in parallel, the bypass pipeline is communicated with the oil tank through a one-way valve, the opening pressure of the one-way valve is smaller than 2 bar, and the one-way valve is used for guaranteeing the positive pressure of the oil suction end of the variable pump. The oil outlet end of the variable displacement piston pump is connected to an external hydraulic system and is provided with a high-pressure filter; the detection device is arranged in the oil supply path and used for collecting oil temperature and / or pressure signals; and the control module is connected with the detection device and the execution components and is configured to control the start and stop states of the oil supply pump, the variable displacement piston pump and the heat exchanger according to the comparison result of the detection result and a preset threshold value.

The invention discloses a combined sealing device frictional wear and external leakage test bed and a test method thereof, and aims to solve the problem that the existing device cannot accurately know the sealing wear. The test bench comprises a rack, a test piece, a stay wire sensor, an oil pipe and a hydraulic system, wherein an oil tank is arranged in the rack. The test piece comprises a test sealing assembly and a plunger, and the stay wire sensor is connected with a sealing combination structure. During testing, the hydraulic system drives the plunger and the sealing assembly to move relatively, the pull wire sensor measures displacement, friction force is calculated by combining pressure data to reflect abrasion, and the oil groove collects leaked oil. According to the invention, comprehensive testing of friction, wear and leakage is realized, sealing performance and wear rules under multiple working conditions can be analyzed, the structure is convenient to observe and operate, and optimization of the sealing structure is facilitated.

The present invention discloses a cooling type oil-immersed transformer, comprising an oil-immersed transformer body, an oil storage tank arranged on the oil-immersed transformer body and providing cooling oil therein, and a heat dissipation fin plate arranged on the outer peripheral wall of the oil-immersed transformer body; wherein an air bag for adjusting the oil pressure and a heat exchange unit for cooling the cooling oil are arranged in the oil storage tank. In the present invention, a cooling and heat exchange shell for the transformer oil is installed in the oil storage tank, and specifically a phase change material is filled in the cooling and heat exchange shell, so that the transformer oil during the peak period of electricity consumption is effectively cooled quickly to ensure the safe operation of the equipment. In addition, a first purge pipe for downward purge is installed on the heat dissipation fin plate outside the oil-immersed transformer body, and a second purge pipe is also passed through the heat dissipation fin plate, and a purge jet hole is opened on the outer peripheral wall of the second purge pipe, so that the dust attached between the heat dissipation fin plates is purged from multiple angles, so as to ensure its cleanliness, which is conducive to improving the heat dissipation efficiency.

The invention discloses a load simulation loading system based on an engineering mechanical power system and a control method thereof, and relates to the technical field of mechanical power system simulation. The load simulation loading system comprises an engineering machinery power system, a load loading system, a whole vehicle control unit and an upper computer platform. The engineering machinery power system comprises a first oil tank, a main pump, a pilot pump, a pilot control handle, a signal control valve and a multi-way valve. The load loading system comprises a three-position four-way reversing valve, a proportional overflow valve, a first proportional throttle valve, a second proportional throttle valve, an electromagnetic valve, a third proportional throttle valve and a variable pump, wherein the three-position four-way reversing valve, the proportional overflow valve and the first proportional throttle valve are connected to the multi-way valve, the second proportional throttle valve and the electromagnetic valve are connected to an outlet of the proportional overflow valve, and the third proportional throttle valve is connected between the second proportional throttle valve and the second oil tank. And the three-position four-way reversing valve is constructed to enable an inlet of the proportional overflow valve to be communicated with one of the oil port A and the oil port B of the multi-way valve in a switching manner, and an outlet of the proportional overflow valve to be communicated with the other one of the oil port A and the oil port B in a switching manner.

An oil drain plug assembly includes a threaded drive nut rotatable to open and close a valve assembly controlling the flow of oil from an oil reservoir, the valve assembly including a valve body with a threaded hollow valve rod extending therethrough, wherein the distal end of the valve assembly is in fluid communication with the oil reservoir, the threads of the hollow valve rod are positioned on the outer surface of the hollow valve rod away from its distal end, and the threaded drive nut is threaded onto the threads of the hollow valve rod.

The invention relates to the technical field of tool magazines, and discloses a tool pouch turnover device of a chain belt type tool magazine, which comprises a frame body, a driving chain belt is arranged in the frame body, a plurality of swing plates are equidistantly arranged on the driving chain belt, one end of each swing plate is fixedly connected with a tool pouch, and the other end of each swing plate is provided with a tool reversing wheel. A tool reversing air cylinder is arranged outside the driving chain belt, a tool reversing block is fixedly connected to the telescopic end of the tool reversing air cylinder, a storage box is arranged on one side of the tool reversing air cylinder, lubricating oil is stored in the storage box, an oil squeezing box is arranged between the storage box and the tool reversing air cylinder, and a connecting pipe is communicated between the top end of the oil squeezing box and the bottom end of the storage box. According to the device, lubricating oil can be automatically sprayed to the tool reversing wheel clamped in the tool reversing block, the tool reversing wheel and the inner wall of the tool reversing block are lubricated, the lubricating oil does not need to be manually smeared, the friction force between the tool reversing wheel and the tool reversing block is greatly reduced, and clamping or abnormal sound is avoided.

The invention provides a loader distributed hydraulic system and a load.The loader distributed hydraulic system comprises a variable working pump, a variable steering pump, a flow distribution valve set, a movable arm inlet and outlet independent control valve set, a bucket inlet and outlet independent control valve set, a large-displacement steering gear and a controller; the variable working pump and the variable steering pump output oil in the oil tank to the flow distribution valve set, and the flow distribution valve set is communicated with the movable arm inlet and outlet independent control valve set, the bucket inlet and outlet independent control valve set and the large-displacement steering gear. The movable arm inlet and outlet independent control valve group, the bucket inlet and outlet independent control valve group and the large-displacement steering gear are respectively communicated with the movable arm oil cylinder, the bucket oil cylinder and the steering oil cylinder; the controller is used for controlling the flow and distribution of hydraulic oil when the pump machine valve group works. According to the hydraulic system, the energy-saving effect of the loader can be improved, loads do not interfere with one another when the movable arm oil cylinder, the bucket oil cylinder and the steering oil cylinder act in a composite mode, and the operation comfort is better.

The invention relates to the technical field of hydraulic pressure, and discloses an oil cylinder for an oil press, a hydraulic system of the oil cylinder and a pressurizing method, a protection frame is additionally arranged outside the oil cylinder, vibration under the working condition of high-speed movement or extreme pressure can be reduced, and the oil cylinder is prevented from being damaged or deformed; the multi-pump system transmits hydraulic oil of a hydraulic oil tank to the lifting module through an oil supply pipeline, the lifting module conducts overflow pressure stabilization on the hydraulic oil and then transmits the hydraulic oil to the station oil cylinder, and therefore the station oil cylinder stretches out and draws back to adjust the position of the oil press. The multi-pump system transmits hydraulic oil of a hydraulic oil tank to an energy accumulator for pressurization through a pressurization pipeline, pressure regulation is conducted through a pressure regulation one-way throttle valve, then pressure stabilization is conducted through a pressure regulation piezoelectric hydraulic reversing valve and a pressure regulation hydraulic control one-way valve, and finally the hydraulic oil flows into a light-pressure station oil cylinder or a heavy-pressure station oil cylinder through the pressurization pipeline. Therefore, the hydraulic pressure output of the oil press is improved, the same oil press can process various different work tasks, and the universality and adaptability of equipment are improved.

The invention discloses a shackle hydraulic system for an underground drill rig and a control method. The shackle hydraulic system is provided with an oil tank and a main oil pump; the rotary motor oil way and the feeding oil cylinder oil way are communicated with the main oil pump; proportional directional valves for controlling the transmission direction of hydraulic oil are arranged on an oil inlet path and an oil return path of the rotary motor oil path; the oil inlet path and the oil return path are respectively connected between the proportional directional valves and the rotary motor; a high-pressure selection valve is arranged in the oil path; the hydraulic control reversing valves are arranged on an oil inlet way and an oil return way of the oil way of the feeding oil cylinder, and the two-position two-way valves are arranged on the oil inlet way and the oil return way respectively. And the high-pressure selection valve is respectively and hydraulically communicated with the hydraulic control reversing valve and the two-position two-way valve to control the opening and closing of the hydraulic control reversing valve and the two-position two-way valve. The problem that the drill rod is easily damaged due to the fact that the feeding speed and the rotating speed are not matched during screwing on and screwing off of the drill rod is solved through accurate control of the hydraulic system, meanwhile, the automation level of the drilling machine is improved, and the labor intensity of workers is relieved.