2635 results about "Machine press" patented technology

The invention relates to the technical field of press monitoring, in particular to a digital twinning-based three-dimensional monitoring system for a precision servo press, which comprises a physical layer sensing module for acquiring real-time operating parameters, environment variables and workpiece processing data of the press; the dynamic twin construction module constructs a total-factor digital twin, and simulates a force-heat-deformation coupling effect by using finite element analysis and a multi-body dynamics algorithm based on physical attributes and process parameters; the intelligent analysis center identifies a potential fault mode of the press machine and locates an abnormal source through multi-physics field simulation data in combination with an improved CNN-LSTM model; the three-dimensional visual interaction unit constructs an interactive immersive three-dimensional virtual scene, renders a running state and a processing process in real time, and generates a maintenance strategy; and the self-adaptive regulation and control unit predicts the residual life of the key component and dynamically adjusts parameters according to a maintenance strategy and real-time monitoring data. Therefore, the problems of single monitoring dimension, disjunction of maintenance strategies and the like in the prior art are solved.

A device for heat control in laser welding of dissimilar additively-manufactured parts includes a welding main body, a moving frame, a lifting frame, a laser welding head, a temperature control mechanism, a pressing mechanism, and a supporting and cleaning mechanism. The moving frame is mounted on the welding main body. The lifting frame is provided on the moving frame. The temperature control mechanism includes a welding platform designed to hold a laser metal deposition (LMD) printed part and a selective laser melting (SLM) printed part. The laser welding head is provided on the underside of the lifting frame for to weld the LMD part to the SLM part.

The invention provides a small-bending-radius pipe push-bending device and a using method thereof.The small-bending-radius pipe push-bending device comprises an upper supporting plate, a push rod, a hydraulic pressurizing pipe, a guide sleeve, a push-bending mold, a sealing joint, a sealing ring, a rubber ball, a pressure sensor, a hydraulic pushing cylinder, a movable ball joint and a hydraulic pressurizer. The using method comprises the following steps that firstly, a straight pipe needing to be machined is installed on the inner side of the push-bending mold; the guide rod is attached to the guide sleeve; a plurality of rubber balls are filled in the inner cavity of the straight pipe; a gap of an inner cavity of the straight pipe is filled through the hydraulic pressurizer; starting the press to apply downward pressure to the push rod; the liquid filling pressure is set to pressurize and support the interior of the pipe, and the pipe begins to be bent and formed along with descending of the push rod; and after 90-degree bending forming is completed, the liquid filling pressure is gradually increased for pressurization shaping. By adopting the mode of filling gaps with rubber balls and hydraulic pressure, the supporting pressure in the pipe is improved; and by adopting a differential friction form, the length of a linear section is increased, and meanwhile uniform stress in the bending process is achieved.

The invention discloses a control method and system of a servo press, and relates to the field of press control, a force displacement curve is obtained in real time from a current punching period, a key feature vector of the force displacement curve is extracted, the key feature vector is compared with an ideal golden feature vector, and a multi-dimensional deviation vector is obtained. Particularly, a deviation decoupling method based on morphological analysis is introduced, and the total deviation can be accurately decomposed into a thermal drift compensation amount caused by the thermal effect of equipment and a material characteristic compensation coefficient caused by plate performance fluctuation by analyzing translation and zooming differences of a current curve and a gold curve in form. Therefore, independent and accurate compensation can be carried out for a physical source, the problems of information aliasing and compensation failure caused by the fact that disturbance sources cannot be distinguished in the prior art are effectively solved, intelligent and feed-forward type cooperative compensation for the next stamping period is achieved, and long-term stability and high precision of the production process are ensured.

A press partner system facilitates the use of a plate-loaded press machine. The system comprises a press partner clamp apparatus and a press partner sleeve device or apparatus, configured for installation on the press machine to modify the range of motion of a machine arm thereof. The clamp apparatus comprises a C-shaped lower portion attachable to a side arm contact rod of the machine arm, an upper block portion, and at least one clamp block extension. The press partner sleeve device or apparatus comprises a lower skirt portion attachable to a bumper of the press machine such that the press partner lower skirt portion fits over at least a portion of the bumper and the press partner sleeve device or apparatus extends beyond the bumper. The system may include a unitary press partner sleeve device, and / or a press partner sleeve apparatus comprising a plurality of components and a securement strap.

The invention belongs to the technical field of bearing fault diagnosis, and particularly discloses a press machine bearing fault diagnosis method and system, a terminal and a medium, and the method comprises the steps: collecting multi-source signal data of a press machine bearing in an operation process; performing denoising and standardization processing on the signal, and extracting time domain and frequency domain features; different sensor features are fused, and multi-dimensional feature representation is constructed; inputting the features into a deep learning model combining a convolutional neural network and a long-short-term memory network for training and reasoning, and introducing a multi-kernel maximum mean value difference strategy to realize feature distribution alignment; and performing fault identification on the real-time signal based on a multi-label classification mode, and triggering an alarm when the prediction probability meets a preset condition. According to the method, fusion modeling of multi-source data and accurate recognition of composite faults are achieved, and the method has high cross-working-condition adaptive capacity and real-time diagnosis capacity and is suitable for intelligent operation and maintenance scenes of press equipment.

The invention discloses a finished product detection machine for chinlon stretch yarn processing, and relates to the technical field of chinlon detection, the finished product detection machine comprises a cabinet body, the top of the cabinet body is fixedly provided with an operation table; the press machine is arranged at the top of the operation table, and the press machine is used for applying pressure to the stretch yarn; the detector is used for detecting and recording parameters and data during operation of the press machine; a chute is formed in the bottom of the inner wall of the console; the driving device is arranged on the inner wall of the sliding groove, and the driving device is used for driving the driving device to move on the inner wall of the sliding groove; the hollow cylinder is fixedly mounted at the top of the driving device, the lantern ring is rotatably mounted on the circumferential surface of the hollow cylinder, and the fixing device on one side far away from the detector moves to drive the stretch yarn to be stretched and straightened, so that the stretch yarn is fixed and straightened, and the measurement reliability of the device is improved.

The utility model discloses a concrete quality detection press machine, which relates to the technical field of concrete detection, and adopts the technical scheme that the concrete quality detection press machine comprises a platform and a pressure mechanism arranged on the platform, and a bearing platform opposite to the pressure mechanism is arranged on the platform; pushing frames capable of moving synchronously are oppositely arranged on the platform and located on the periphery of the bearing table in pairs; and a driving assembly for driving the pushing frame to move is arranged at the lower end of the platform. According to the device, the pushing frames are arranged on the four edges of the platform, so that the concrete test block can be completely centered with the pressure mechanism by synchronously clamping and pushing the concrete test block, and the high precision of experimental data is ensured.

A hybrid contact is provided having a first contact part, which is solidly made from metal, and a second contact part in the form of a stamped and bent part, which are connected to each other in a press fit, and wherein a filament connected to a label carrier is fixed in a press fit of the contact parts.

The invention discloses a steel wheel spoke stamping die which comprises a bearing table, a lower die base arranged on the bearing table, a bearing detection assembly installed on the bearing table and used for bearing the lower die base and detecting the position of the lower die base, a press machine installed on the top of the bearing table, and an upper die base installed at the output end of the press machine in a transmission mode. The upper die base and the lower die base are matched to be used for punching a spoke workpiece, and the driving assembly is installed on the front face of the bearing table and used for driving the lower die base to revolve and driving the lower die base to rotate for die retreating. By means of the cooperative use mode of the lower die bases and the driving assembly, the driving assembly can drive the multiple lower die bases to rotate so that the multiple lower die bases can be matched with the upper die base to conduct stamping machining on the wheel spoke, and when the driving assembly drives the lower die bases to rotate to be separated from the upper die base, the lower die bases can also rotate by a circle so that the lower die bases can be automatically stripped; and therefore, the stamping production efficiency of the wheel spoke is improved.

The invention discloses a lightweight aluminum alloy hot die forging press, and relates to the technical field of hot die forging presses. The device comprises a press machine base, a fixing frame is fixed to the rear side of the top of the press machine base, a forging and pressing assembly is arranged on the fixing frame, a movable groove is formed in the center of the top of the press machine base, a movable block is movably arranged in the movable groove, and a lower die is arranged in the center of the top of the movable block; a workpiece to be forged and pressed is conveniently transferred to the lower die, the forging and pressing assembly is matched with the lower die, forging and pressing operation can be conveniently conducted on the workpiece, a demolding assembly is arranged on the movable block and matched with the lower die, the forged and pressed workpiece can be conveniently ejected out of the lower die, and demolding of the workpiece is achieved; and after demolding, the workpieces at the rear end can be taken out conveniently, feeding, forging, demolding and discharging of the workpieces are facilitated, continuous work of workpiece forging work is guaranteed, and the machining efficiency of the workpieces is improved.

An electro-mechanical brake includes: a brake disc; a friction pad; a pressing unit configured to press the friction pad toward the brake disc; a motor supplying power to the pressing unit; a current sensor; a position sensor configured to measure a position of the pressing unit; and an initial position calculating unit calculating at least one of a home position or a contact point of the pressing unit, wherein the pressing unit is configured to pass through a first check point at which a first current is measured, and a second check point at which a second current greater than the first current is measured, and wherein the initial position calculating unit calculates at least one of the home position or the contact point based on the first current, the first check point, the second current, and the second check point.

The invention belongs to the technical field of hardness detection, and relates to a concrete hardness detection device. Comprising a testing machine base, a pressure-bearing table arranged on the testing machine base and a testing machine cylinder body, a controller electrically connected with the testing machine cylinder body is installed on one side of the testing machine cylinder body, a sliding frame slides on a lifting rod of the testing machine cylinder body, the sliding frame is suitable for sliding up and down within a preset range along the lifting rod, and the lower side of the sliding frame is connected with a testing machine pressing piece; a delay switch electrically connected with the controller is installed on the upper portion of the sliding frame. When the concrete test piece is placed, the delay switch is driven to move upwards and be extruded, so that the hardness test can be automatically carried out after the concrete test piece is placed, an additional step of manually controlling starting is omitted, and the operation is convenient; in addition, the sliding range of the sliding frame is preset, so that the function of size control is realized by skillfully utilizing the relation of components; and automatic protection is achieved during hardness detection, and discharging is convenient after detection is completed.

An energy-saving rolling support and radial symmetric hydraulic cylinder drum type intelligent braking structure of a screw press comprises a motor, the motor is fixed to an upper cross beam, an output shaft of the motor is connected with a gear, the gear is meshed with an outer ring gear on a flywheel, the flywheel and a first screw are connected and rotate together, and the top of the first screw is tensioned through a first nut; hydraulic cylinders are symmetrically arranged above the upper cross beam in the radial direction, hydraulic oil enters cavities of the hydraulic cylinders through oil conveying pipelines on the upper cross beam, advancing and retreating of piston push rods are achieved, drum brakes are installed on the front portions of the piston push rods, friction plates are symmetrically arranged on the end faces of the drum brakes, and when the piston push rods are ejected out, the friction plates make contact with the lower end faces of flywheels. Therefore, the braking of the screw rod mechanism is realized; according to the invention, the space is saved, and the braking sensitivity is improved; the friction loss of the screw press in the operation process is reduced, and the energy utilization rate is increased.

The invention relates to the technical field of metal powder manufacturing products, in particular to an automatic ring part production line and a process control method.Bar heating furnaces of the production line are arranged on the inner side and the outer side of a guide rail in two rows and multiple sets, a transfer manipulator is arranged on the guide rail, a ring forging press machine is arranged at the front end of the guide rail, and a movable workbench is arranged at the ring forging press machine; the ring rolling machine is arranged in front of the ring forging press machine, the center line of the ring rolling machine and the center line of the ring forging press machine are obliquely arranged, a carrying mechanical arm is arranged between the ring rolling machine and the ring forging press machine, the conveying roller way is arranged in front of the ring rolling machine, and the center line of the conveying roller way and the center line of the ring rolling machine are obliquely arranged. The center line of the conveying roller way is parallel to the center line of the ring forging press, and the swing manipulator is arranged in an included angle formed by the ring rolling machine and the conveying roller way. According to the production line and the control method, the production process is optimized, the production efficiency is improved, and the production cost is reduced.

The utility model relates to a connecting rod copper bush assembling tool which comprises a pressing head installed on a press machine, a circular pressing plate fixed to the lower end of the pressing head and a cylindrical supporting seat fixed to the pressing plate and capable of being inserted into a copper bush, two positioning pins capable of being inserted into or moved out of oil holes of the copper bush are arranged on the supporting seat, and the positioning pins are connected with a linkage telescopic mechanism. The upper end of the rotating shaft is rotationally connected with the pressing plate, the driving lever is used for driving the rotating shaft to rotate, the torsional spring is arranged on the rotating shaft in a sleeving mode and used for resetting the driving lever, a connecting plate is fixed to the lower end of the rotating shaft, and the two positioning pins are connected with the connecting plate through connecting arms respectively. A limiting piece used for limiting the shifting rod is installed on the pressing plate. According to the utility model, the problem of unqualified product quality caused by inaccurate oil hole alignment is avoided, and the production quality and the production efficiency of the product are improved.

The invention relates to the technical field of die design, in particular to a method for acquiring a die surface deformation compensation value of a stamping die. The method comprises the specific steps that S1, a press table top deformation measuring system is adopted, and the deformation amount of a press under a certain load is collected; s2, establishing a simulation model of a measurement system by adopting Hypermesh software, and obtaining a simplified substitution model of a press table board and a sliding block by combining the collected experimental data through size optimization; s3, cleaning and grid division are conducted on the geometric structure of the mold, and accessory structures which do not affect the strength are removed; s4, combining the simplified model with the die grid model, adding load and constraint of a press machine, and performing stamping simulation; and S5, generating a die surface deformation contour map according to a simulation result, and obtaining a die surface deformation compensation value. Compared with the prior art, by combining a high-precision measurement technology and numerical simulation analysis, technical support can be provided for design and manufacturing of the stamping die, and progress and development of the die industry are promoted.

The utility model discloses an automatic detection device for a thrust small spring, which comprises a disc feeder, a code spraying mechanism, an automatic mechanical arm, a press machine and a spring height measuring mechanism, the discharge end of the disc feeder is provided with a traction passage, and the small spring is in feeding fit with the traction passage through the disc feeder. A code spraying mechanism is arranged on one side of the traction passage, the output end of the code spraying mechanism faces the small spring, a moving frame is arranged at the tail end of the traction passage, a linear moving platform is movably arranged on the moving frame, an automatic mechanical arm is arranged on one side of the moving frame, and the small spring of the traction passage is matched with the linear moving platform in a feeding mode through the automatic mechanical arm. A press machine is arranged on the side, close to the traction passage, of the movable frame, a spring height measuring mechanism is arranged on the side, away from the traction passage, of the movable frame, detection is convenient, and automatic sorting is achieved.

The invention relates to the field of concrete testing, in particular to an eccentric compression test device and method for an FRP rib concrete column. Comprising a control system and a spring integration device, the spring integration device comprises a cover plate, a force sensor and a plurality of spring devices, the spring devices are detachably connected with the cover plate, the plurality of spring devices are arranged in an array, and the control system can perform pressure distribution adjustment on each spring device to realize an eccentric loading test on the FRP reinforced concrete column. The spring integrated device disclosed by the invention can convert the axial compression effect of a conventional axial press actuator into any required eccentric loading mode, so that the implementation of a complex eccentric loading working condition is ensured, the safety of an eccentric loading test is greatly enhanced, and the stability of the eccentric loading test is improved by accurately adjusting the rigidity in the spring device. And fine adjustment of eccentric force can be realized, so that the test precision under various complex eccentric loading test working conditions is improved.

The invention relates to the technical field of motor servo control, and discloses a dual-motor servo press energy efficiency optimization method based on edge calculation. According to the method, operation parameters of a main driving motor and an auxiliary motor are collected in real time through edge calculation nodes deployed on a dual-motor servo press body; dynamically constructing a dual-motor cooperative load state matrix based on the operation parameters, and calculating a real-time comprehensive energy efficiency index by using an energy efficiency evaluation model in an edge calculation node; according to a deviation value between the index and a target energy efficiency threshold value, determining a dynamic energy efficiency adjustment parameter of the double motors; sending an instruction to the controller by the edge computing node, and synchronously updating a power distribution strategy; and monitoring and feedback adjustment are executed circularly until the dual-motor cooperative load state reaches a preset energy efficiency stable interval. According to the method, real-time monitoring and dynamic optimization of the dual-motor cooperative operation state are realized, and the energy efficiency stability of equipment operation is improved.

The invention discloses a control system and method of an intelligent servo press, relates to the technical field of press control, and constructs a uniform stamping state representation through deep excavation and fusion of force and displacement process data streams generated in the servo press. On the basis, a double-time-scale implicit state estimation algorithm is introduced, time sequence modeling and deep analysis are carried out on weak and gradual change characteristics contained in a full-stroke force displacement curve, and therefore accurate quantitative evaluation of the implicit state of mold abrasion is achieved. Then, the quantized wear value serves as a core decision factor, a self-adaptive control mechanism based on a compensation knowledge base is driven, and an optimal process compensation strategy and a sliding block target track are dynamically generated. Therefore, the product quality consistency in the precise stamping process can be improved, the service life of the die is effectively prolonged, the production cost is reduced, and the intelligent level of stamping production is comprehensively improved.

The invention discloses a pressing device for rubber product processing, and relates to the technical field of press machines for rubber processing, the pressing device comprises a press machine rack, a press roller driving mechanism, a pressure adjusting piston, a main press roller, an auxiliary press roller, a pressure feedback piece, a magnetic compensation piece and a rubber contour prediction piece, the press machine rack is internally provided with a pressing chamber; a main compression roller and an auxiliary compression roller are installed through a supporting seat and driven by a compression roller driving mechanism to rotate, a pressure adjusting piston adjusts the overall pressure of the main compression roller, a pressure feedback piece on the main compression roller can dynamically detect the pressing pressure and generate a magnetic field, and a magnetic compensation piece of the auxiliary compression roller is matched with the magnetic field to achieve local pressure compensation. Compared with an existing press machine, the press machine has the advantages that the press fit quality and stability of rubber products can be improved through pretreatment detection, gradient pressure compensation and multi-parameter cooperative control, and the production efficiency is improved. And the universality and adaptability of equipment are enhanced.

The invention discloses an automatic die changing control system of a press machine. The automatic die changing control system comprises a programmable logic controller, electrical hardware electrically connected with the programmable logic controller and an execution component. The programmable logic controller is configured to achieve the control functions of sliding block die-filling height adjustment, balancer air pressure adjustment, die clamping device action, movable workbench operation and die identification number switching, and triggers at least two control functions to be executed in parallel in the die changing process. The programmable logic controller is connected with all electrical hardware and execution components through preset program logic so as to control starting, running and ending of the automatic die changing process in the whole process.

The invention provides a resistance heating forming device and method for a high-temperature alloy plate with additional draw beads, and belongs to the technical field of high-temperature alloy plate forming and manufacturing. The device comprises a die assembly pressure mechanism, a temperature control die, a plate blank pressing forming mechanism, a self-resistance heating mechanism and a cooling mechanism. A temperature control mold is arranged on the inner side of the mold closing pressure mechanism, a cooling mechanism is arranged between the temperature control mold and the mold closing pressure mechanism, and a plate blank pressing forming mechanism and a self-resistance heating mechanism are symmetrically arranged on the two sides of the temperature control mold. The method comprises the steps that a temperature control mold is heated to a set temperature, uniform heating is achieved through an integrated heating system, and then a high-temperature alloy plate is placed in the mold to be subjected to resistance heating forming. According to the method, performance-control and shape-control integrated forming of the high-temperature alloy plate is achieved, uniform strain distribution of a high-temperature alloy material is achieved in the forming process, the surface quality and size precision of a formed part are effectively improved, and the problems that in the prior art, forming precision is insufficient, performance is weak, and production efficiency is low are solved.

A center hole is formed in a base, the lower end of a guide sleeve is coaxially fixed to the upper end of the base, a lower die is installed in the guide sleeve in a matched mode, and the lower end face of the lower die makes contact with the upper end face of the base. The conical section at the upper end of the valve rod and the lower half portion of the large-diameter section are matched with a lower die hole in the upper end of the center hole of the lower die, the upper die is arranged in the guide sleeve in a matched mode, an upper die hole in the lower end of the center hole of the upper die is matched with the large-diameter section of the valve rod, and the upper end of the upper die extends out of the guide sleeve. And the upper end of the valve rod is deformed and turned inwards until the belleville spring and the maximum-diameter position of the lower end of the valve head are completely wrapped in the stepped hole of the large-diameter section of the valve rod. According to the utility model, the technical problem that the valve rod assembly of the indicator valve cannot be directly assembled is solved, the problem that the valve head is arranged in the inner hole of the valve rod and the stroke of the valve is ensured by accurately controlling the length of the inner cavity when the valve head, the valve rod and the belleville spring of the indicator valve are assembled is effectively solved, the valve rod assembly is ensured to be smoothly assembled, and the assembling quality and the processing efficiency are ensured.

The invention relates to the technical field of press machines, and discloses a press machine for plywood production, which comprises a platform and further comprises a U-shaped frame, two vertical edges of the U-shaped frame are fixedly mounted at the top of the platform, and the interior of the platform is hollow; the pressing plate is horizontally arranged between the platform and the transverse edge of the U-shaped frame, and the interior of the pressing plate is hollow; the first adsorption assembly is arranged on the platform, and the first adsorption assembly is used for adsorbing the bottom of the pressed plywood; and the second adsorption assembly is arranged on the pressing plate, and the second adsorption assembly is used for adsorbing the top of the pressed plywood. According to the plywood press-fit equipment, when plywood is pressed, plates at the top and the bottom of the plywood can be automatically adsorbed, in addition, after press-fit is finished, the plywood subjected to press-fit can be automatically subjected to adhesion strength detection, the plywood has a self-detection function, and then the using effect of the equipment is improved.

The invention discloses a concrete crack resistance detection device for building civil engineering, and relates to the technical field of concrete performance detection.The concrete crack resistance detection device comprises a base, the upper surface of the base is sunken downwards to form a mounting groove, and the middle of the mounting groove is sunken downwards to form a first image acquisition chamber; the transparent aluminum oxide objective table is arranged in the mounting groove, and the concrete sample is arranged on the transparent aluminum oxide objective table; the first camera is arranged in the first image acquisition chamber, the image acquisition end of the first camera faces the transparent aluminum oxide objective table, and the first camera can acquire an image of the lower surface of the concrete sample; the heating mechanism is arranged in the transparent aluminum oxide objective table and / or on the lower surface of the transparent aluminum oxide objective table, and the heating mechanism is used for heating the sample to a target temperature; a pressing plate is arranged at the end of a telescopic rod of the hydraulic press, and the hydraulic press applies pressure to the upper surface of the sample through the pressing plate. Different stress conditions and different temperature and humidity environments can be accurately simulated, the cracking condition of the sample can be comprehensively observed, and large-batch tests can be carried out.

The invention belongs to the technical field of forging, and relates to a manufacturing method of rocker arm type forgings. The manufacturing method of the rocker arm type forge piece comprises the following steps: blanking; first-fire forging; the specific process of primary heating forging comprises the steps that firstly, an original blank and a bending die are subjected to lubricating treatment and preheating, then the original blank is subjected to primary heating and heat preservation, then the original blank is placed in the bending die to be bent through a press machine, a bent blank is formed, and the bent blank is ground; secondary heating forging; the specific process of secondary heating forging comprises the steps that firstly, the bent blank and the die forging die are lubricated and preheated, then the bent blank is heated and subjected to heat preservation for the second time, then the bent blank is placed in the die forging die to be pre-forged through a press machine, and ash cooling is conducted after forging. According to the process method, the original blank is subjected to die forging to ensure that the appearance quality of rocker arm type forgings is kept consistent, and the internal quality of the forgings is improved.

The invention relates to a press machine fault early warning method, which comprises the following steps of: firstly collecting press machine processing data of different types of parts to obtain a plurality of sample data, further performing pressure value-time curve construction on all pressure data in each sample data, and then performing pressure value-time curve construction on all pressure data in each sample data; all the pressure value-time curves in each piece of sample data are fused into a coordinate system, and a fusion curve corresponding to each piece of sample data is obtained; cutting the fusion curve based on different working states of the press machine, calculating the change rate of the pressure corresponding to the press machine in different working states through the cut curve, and constructing and training a press machine wear model according to the change rate; and the prediction time of the wear fault of the press can be speculated by acquiring the real-time pressure data of the pressure.

A surrounding rock deformation and failure test system with a rotatable stress main shaft in a three-dimensional crustal stress field is characterized in that a press machine upper pressure head and a press machine base are oppositely distributed up and down, and a loading hydraulic cylinder is connected with the press machine upper pressure head; the surrounding rock sample is vertically arranged in the axial loading space, and a simulation roadway is formed in the axis part of the surrounding rock sample; annular upper and lower end plates are fixedly connected in the upper and lower ends of the confining pressure cylinder respectively; the confining pressure cylinder sleeves the outer side of the axial loading space; a plurality of groups of mounting holes are uniformly formed in the circumferential directions of the annular upper and lower end plates; the radial pressurizing assembly comprises a supporting steel pipe and an elastic capsule. The main supporting section is sleeved with the elastic capsule, and a plurality of through holes are formed in the main supporting section. A plurality of strain bricks are pre-buried in the surrounding rock sample; the track is fixedly mounted in the simulated roadway; the micro camera is assembled on the track through the electric control trolley; and the strain gauge II and the acoustic emission probe are arranged in the simulated roadway. According to the system, the working condition that the direction of a stress field changes can be simulated in a three-dimensional true triaxial stress environment.