74 results about "Pressure transmission" patented technology

This utility model discloses a winding pressure roller, comprising: an outer roller, an elastic layer covering the outer circumferential surface of the outer roller, and a left and right shaft head of the pressure roller, which are coaxially assembled inside the outer roller. The left shaft head includes a left first section and a left second section arranged along its axial direction, and the right shaft head includes a right first section and a right second section arranged along its axial direction. The outer circumferences of the left first section and the right first section are respectively connected to the inner wall of the outer roller; gaps are formed between the outer circumferences of the left second section and the right second section and the inner wall of the outer roller. When the left and right shaft heads are assembled inside the outer roller, a certain gap is left between their opposing inner end faces. This utility model's winding pressure roller, through its split shaft head and key gap design, effectively avoids the direct impact of shaft head deformation on the outer roller, ensuring uniform pressure transmission, thereby improving winding quality and production efficiency.

The application provides a static pressure balance type underwater self-driven flexible touch pressure sensing finger, which comprises a touch pressure sensing unit, a hydraulic cylinder, a pressure transmission unit, a piezoelectric transducing unit, a transducing unit support, a platinum electrode and a base, the touch pressure sensing unit and the pressure transmission unit are connected with the hydraulic cylinder through bolts, and the oil cavity between the piston end faces is filled with hydraulic oil; the piezoelectric transducing unit is inserted into the stepped through hole in the cylinder wall of the transducing unit support; the pressure transmission unit and the base are connected with the transducing unit support through a flange and a threaded pair; the platinum electrode is fixed in the lead hole of the piezoelectric transducing unit, and the lead of the platinum electrode is led out from the lead hole of the base and connected to a pressure detection circuit. Based on the area effect of Pascal's principle and the solid-liquid interface double electric layer principle, the application can convert the tiny pressure detected by the finger tip into a larger elastic deformation of the flexible hose, so as to generate a high-amplitude ionic current signal and transmit it to the pressure detection circuit, and realize the sensing, amplification and measurement of the pressure signal.

This invention provides a parallel collaborative pressurization forming system, relating to the field of hot pneumatic forming technology. The system is connected to a pressurization forming device, which includes two parallel station molds. The system comprises a central control subsystem and two pneumatic control subsystems, each connected to its corresponding station mold via a pressure transmission pipeline. The central control subsystem determines the initial pressurization rate and initial target pressure of the gas medium in each independent mold cavity. The pneumatic control subsystems pressurize according to the initial parameters. During pressurization, the central control subsystem acquires real-time pressure data to determine the current target pressurization rate and current target pressure. The pneumatic control subsystems adjust according to the current parameters until the tube is formed. This invention achieves independent and precise control of pressure and rate throughout the entire two-piece forming process through dual independent pneumatic control subsystems and a closed-loop central control system.

The utility model belongs to valve spare technical field relates to a kind of gas taking valve assembly with support.The utility model, including valve body main part, its characterized in that, the valve body main part has air inlet and air outlet, connecting channel is equipped between the air inlet and air outlet.The utility model in the gas taking process, gas passes through air inlet and enters connecting channel, pressure acts on the pressure slide bar in integrated elastic pressure structure, the pressure slide bar passes pressure to the pressure sensor in the monitoring piece directly opposite, pressure sensor converts pressure signal into electric signal and passes to micro MCU, micro MCU carries out analysis processing to signal, realizes the real-time monitoring to gas taking stage pressure, when pressure data appears exception, such as exceed the normal range of pre-set, micro MCU can judge that gas taking process exists fault, timely trigger alarm and other self-diagnosis function, remind user to take corresponding measure, avoid safety accident to occur.

The present disclosure discloses a cordless roller shutter spring regulator, including a roller shutter spring pre-tightening force adjustment mechanism and a self-locking mechanism, wherein the self-locking mechanism is used to lock an adjustment shaft on the roller shutter spring pre-tightening force adjustment mechanism before an installation weight is installed; after the installation weight is installed, the self-locking mechanism unlocks the adjustment shaft on the roller shutter spring pre-tightening force adjustment mechanism under a top pressure of the installation weight. The self-locking mechanism includes a pressing spring, a self-locking ring and a fixed ring, wherein an end face of the self-locking ring is provided with a top pressure transmission rod and a ring of ratchet teeth A, the ratchet teeth A are engaged with the ratchet teeth B, the ratchet teeth A are able to slide in one direction relative to the ratchet teeth B.

Aircraft landing gear system (100, 200, 300), comprising actuators associated with the landing gear and supplied with pressurized hydraulic fluid by a hydraulic circuit (10; 15), including at least hatch and landing gear attachment boxes (106, 109, 206, 209, 306, 309), the aircraft comprising emergency extension means (20) capable of ensuring the release of the hatches and landing gear to cause the landing gear to extend under the effect of gravity in the event of failure of the hydraulic circuit. According to the invention, the emergency extension means comprise a pyrotechnic device (50) adapted to generate, in a controlled manner, pressurized gas acting on a first face of a piston (40) sliding with a seal in a chamber (30) such that a second face of the piston, in contact with the hydraulic fluid, transmits the pressure of the gas thus produced to at least the attachment boxes via the hydraulic fluid. FIGURE IN ABRIDGED FORM: Fig. 2

The utility model relates to the technical field of hoist, and disclose a general portal crane light weight trolley, including the frame, the frame is provided with two, two the frame between fixedly connected with the bottom plate, the bottom plate top fixedly connected with the hoist device, the frame outside is provided with the support subassembly. The utility model discloses through the frame and transmits pressure to first rotating seat, to this power transmission to first connecting ring, to this pressure transmission to sleeve and fixed disc, to this pressure transmission to second rotating seat, to this can be to the pressure and divide, and through the cooperation of first sliding rod, sleeve, fixed disc and spring, to this can make the frame in the appearance deformation, sleeve and first sliding rod can be under the action of spring, carry out the length adjustment, to this make the wheel can always contact the hoist, to this reduce the appearance wheel and be loaded too heavy, lead to the possible of appearing damage, to this reduce the possible maintenance time, to this improve production efficiency.

This utility model discloses a main shaft sealing structure for a cross-flow turbine unit, belonging to the technical field of sealing structures. It includes a cross-flow turbine unit body, with a main shaft body rotatably connected to one end of the main body. A protective sleeve is fitted onto the surface of the main shaft body. The main shaft body and the protective sleeve are rotatably connected via a sealed bearing. The protective sleeve and the cross-flow turbine unit body are connected via a connecting assembly. An alarm assembly is located below the protective sleeve. This utility model features a connecting assembly, which facilitates the installation of the protective sleeve. The structure is easy to use, requires no tools, and has simple steps. A rubber sealing ring facilitates sealing at the connection point. The alarm assembly allows for timely alerting of personnel when water enters. When water enters, the pressure is transmitted to a pressure sensor, which then transmits an electrical signal to the controller, thereby controlling a buzzer to sound and alert personnel.

This invention provides a testing fixture, system, and method for testing air pump valve plates in a vehicle air supply system. The fixture includes a base and a sealing plate, which together enclose a valve plate housing cavity. The base contains a first gas channel and a pressure transmission channel, respectively connected to a gas source and a first pressure detection unit. The sealing plate has a second gas channel and a displacement detection unit; the second gas channel connects to a pressure accumulator. This dual-path independent gas design allows for the application of independent and adjustable gas pressures, accurately simulating the actual alternating stress conditions of the valve plate. This invention can simultaneously collect air pressure and valve plate displacement data and construct mechanical characteristic curves. The overall structure is compact, with reliable sealing performance, and can complete independent testing without relying on a complete machine, effectively reducing testing costs. The fixture integrates both mechanical testing and fatigue life testing functions, avoiding multiple equipment switching operations, ensuring consistent and comparable test data, and is easy to assemble and disassemble, highly applicable, and can reliably meet the industrial testing needs of air pump valve plates.

The application discloses a kind of air-blowing auxiliary solid-state soil conditioner strong discharge uniform application device, which belongs to agricultural machinery.The automatic controller and air pressure transmission system are installed on the frame, and the four material application discharge valves of front and rear rows are concentrically connected in series and connected by a communication pipe.The driven sprocket and driving sprocket are respectively arranged on the left and right sides of the two ends of the double-row material application discharge valves, the speed motor is connected with the driving sprocket, and the two feed hoppers are respectively fixed between the driving sprocket and the right end material application discharge valve of the front row, and the driven sprocket and the left end material application discharge valve of the rear row.The automatic controller is composed of a key module, a microcontroller, motor drive modules, a speed sensor, a communication interface, a voltage linear amplifier, a D / A converter and a display screen.The air pressure transmission system includes an air pressure sensor, an air compressor, an air tank, a filter and an electrical proportional valve.The application realizes continuous forced conveying and uniform discharge of solid-state soil conditioner, and has the characteristics of good uniformity and less blockage.

This invention relates to the field of coupler assembly technology, specifically to a pressure-type coupler assembly device. It includes an assembly table and a press mounted on top of the assembly table. The telescopic end of the press extends into the working area of ​​the assembly table. A pressure plate is located at the bottom of the telescopic end, and a force-transmitting shaft and a stress-relieving cylinder are located at the bottom of the pressure plate. The distance between the bottom of the force-transmitting shaft and the workpiece is greater than the telescopic distance of the telescopic end. Because a force-transmitting shaft and a stress-relieving cylinder are located at the end of the telescopic end, the original rigid pressure becomes adjustable. The compression force of the support spring indicates whether the workpiece is in the correct position. When the workpiece is correctly placed, the force-transmitting shaft and the stress-relieving cylinder are fixed, making the pressure transmission path rigid. When the workpiece is incorrectly placed, the force-transmitting shaft and the stress-relieving cylinder can automatically slide, thereby absorbing the downward pressure of the force-transmitting shaft and preventing excessive pressure from being transmitted to the workpiece.

This utility model belongs to the field of hinge technology and discloses a hinge structure for a vehicle-mounted ceiling screen. It includes a connecting shaft, one end of which is fixedly connected to a positioning post. A movable frame, multiple spring pieces, and a nut are sequentially sleeved on the outside of the connecting shaft. The connecting shaft has symmetrically arranged first flat surfaces. The movable frame has connecting holes for the connecting shaft to pass through. Each of the multiple spring pieces has a first oblong hole that matches the connecting shaft with its first flat surface. The center of each spring piece protrudes to one side, and the multiple spring pieces are arranged alternately on opposite sides. This utility model, through the alternating arrangement of the multiple spring pieces, counteracts the bidirectional torque caused by vehicle vibration, preventing screen sway. The symmetrical arrangement of the first flat surfaces on the connecting shaft and the first oblong holes in the center of the spring pieces restrict circumferential rotation, ensuring uniform pressure transmission. The protrusion of the center of each spring piece provides non-linear damping, enabling hovering at any angle.

An elastic membrane for transmitting driving pressure of a needleless syringe, and the needleless syringe using same are disclosed. The elastic membrane (500) for transmitting pressure comprises: a body (510) which has elasticity, and which is provided between a driving chamber (402) and a driven chamber (202) so as to partition the driving chamber (402) from the driven chamber (202) in a sealed state; a driven protrusion part (520) in which a pressure-side cavity (522) opened to the driving chamber (402) is formed, and which protrudes from the central portion of the body (510) toward the driven chamber (202); and a driving protrusion part (530) which is spaced a predetermined distance from the edge of the body (510) and which protrudes toward the driving chamber (402), wherein, when a pressure (F) is applied from the driving chamber (402) such that the driving protrusion part (530) is pressed toward the driven chamber (202), the edge of the body (510) facing the driven chamber (202) becomes a hinge point (H), and thus the driven protrusion part (520) transmits the pressure while deformed toward the driven chamber (202).

The utility model discloses a kind of high sealing joint for automobile air conditioner pipeline, the utility model relates to air conditioner pipeline technical field, the utility model, including: pipeline, the end surface of the pipeline is fixedly connected with connecting device, the inner wall of the connecting device is fixedly connected with sealing device The sealing device is sealed by extrusion mode, and the sealing device includes extension pipe;By setting sealing device, in sealing device, rubber ring is installed in the clamping groove of extension pipe inner wall, and the micro gap at the connecting place of pipeline is filled by extrusion deformation, to form initial sealing surface;At the same time, the clamping strip of sliding connection in rubber ring inner wall cooperates with bellows, when pressure is generated in pipeline refrigerant, pressure is transmitted to bellows to make it expand, and then push clamping strip extrude rubber ring, realize pressure self-adapting sealing, ensure that joint in system operation process, even if pressure fluctuation can also maintain efficient sealing, effectively prevent the purpose of refrigerant leakage.

The application relates to the technical field of design and control of restraint release devices in spacecraft launch systems, and provides an integrated design method of mechanism type restraint release devices based on configuration optimization and impedance control. The method simultaneously optimizes the slope of the slow-release characteristic curve and the amplification coefficient of the mechanism type restraint release device, improves the air pressure transmission efficiency, and minimizes the impact response in the slow-release process; an impedance controller for the mechanism type restraint release device is constructed, which can realize accurate displacement tracking and force compliance control, improve the effectiveness of the restraint arm and the adaptability to the environment; an integrated optimization method for configuration parameters and impedance control coefficients is provided, which maximizes the amplification coefficient, slow-release performance and control compliance, and can more comprehensively realize the optimization design of the mechanism type restraint release device.

This utility model discloses an auxiliary tooling for measuring the axial deformation of tapered roller bearings, relating to the field of bearing testing technology. It includes a pressure sleeve, a bearing ring, a support base, and a dial indicator. An annular boss is provided in the middle of the outer wall of the pressure sleeve. The bearing ring is interference-fitted to the bottom of the pressure sleeve. A groove for placing the bearing to be tested is provided on the upper surface of the support base. The lower end face of the bearing ring abuts against the upper end face of the bearing to be tested. A bracket is provided on the support base, and the dial indicator is fixedly mounted on the bracket with its probe abutting against the upper end face of the annular boss on the pressure sleeve. This utility model transmits the pressure applied by a press to the bearing to be tested, causing axial deformation. The dial indicator then accurately measures the displacement of the pressure sleeve, thereby indirectly obtaining the axial deformation measurement of the bearing. This facilitates specific statistical analysis of the axial displacement. The required materials are readily available, processing is convenient, costs are saved, and work efficiency is improved.

This invention relates to a sealing performance testing unit, a multi-stage sealing performance testing system, and a method for sealing plugs. The testing unit includes: a loading assembly comprising an inner cylinder and an outer cylinder coaxially arranged and open at both ends, with a gap between them to define a confining pressure annulus. The inner cylinder is used to accommodate the sealing plug to be tested. An end sealing assembly is sealingly connected to both ends of the loading assembly to close the two end ports of the inner cylinder and the confining pressure annulus. A fluid channel system is disposed on the end sealing assembly, including a main fluid channel communicating with the interior of the inner cylinder and a confining pressure channel communicating with the confining pressure annulus. The confining pressure channel is used to connect to an external pressure source to apply radial confining pressure to the inner cylinder. The main fluid channel is detachably connected to the main fluid channel of another adjacent testing unit to form a multi-stage series testing loop. This testing unit can quantitatively analyze the pressure transmission mechanism and synergistic effect between multi-stage sealing plugs.

This utility model discloses a telescopic compensation type layered water injection sealing device, which includes a rubber sleeve and a spring. The upper and lower rubber sleeves, installed outside the upper and lower water injection pipes respectively, have hydraulic chambers one and two connected by a connecting hose. A pressure transmission hole in the upper water injection pipe, connected to hydraulic chamber one, is connected to a hydraulic pump on the ground via a hydraulic pipeline. The upper and lower water injection pipes are connected by a telescopic compensation mechanism. The spring is installed between the sealing cylinder and the telescopic sleeve in the telescopic compensation mechanism. The upper water injection pipe, sealing cylinder, corrugated pipe, sealing sleeve, and a fixing ring installed outside the lower water injection pipe and below the telescopic sleeve are sequentially fixedly connected. The lower water injection pipe can move up and down within the telescopic sleeve and the fixing ring. The telescopic compensation mechanism absorbs vibration energy generated during water injection and compensates for sealing gaps. This device is suitable for high-efficiency layered water injection tubing in oilfield development, providing vibration and creep prevention effects.

This invention discloses a pipetting device and method with switchable stroke and dual stops, including a pipette body and a piston assembly. The piston assembly includes a piston rod and a piston, and also includes an operation button assembly, comprising a primary sleeve and a secondary sleeve. The primary sleeve forms the user pressing part, and the secondary sleeve is connected to the piston rod. A locking mechanism has a locked state and an unlocked state. In the locked state, the primary sleeve and the secondary sleeve are relatively fixed. In the unlocked state, the secondary sleeve is allowed to slide independently along the axial direction relative to the primary sleeve. A transmission mechanism is located inside the operation button assembly. When the locking mechanism is in the unlocked state and the primary sleeve is stopped, the transmission mechanism transmits the pressing force applied to the operation button assembly to the secondary sleeve, driving it to continue downward. By setting a lockable two-stage sleeve operation assembly and an internal transmission mechanism, the stroke control that relies solely on touch is replaced, achieving precise and reliable positioning and switching of the two stop points of the pipette.

The application provides a joint pressure measuring device, method and surgical robot system, the device comprises a pressure bearing module and a core module, the core module comprises a gap adjusting submodule and a control submodule; the pressure bearing module comprises a first platform and a second platform; the gap adjusting submodule is used to drive the first platform to move relative to the second platform along the pressure transmission direction between the first object and the second object, so as to adjust the gap between the first platform and the second platform; the control submodule is configured to obtain the pressure data between the first object and the second object according to the output torque data of the gap adjusting submodule in the process of rotating the joint. The application can save the cumbersome operation of additionally adding a gap device or a gasket to cooperate with the prosthesis in the joint pressure measuring process, and can avoid using a pressure sensor and reduce the requirement for the assembly position according to the output torque data of the gap adjusting submodule to back calculate the pressure.

The present application relates to the field of oil exploitation, discloses a kind of eccentric intelligent measurement and adjustment of oilfield injection well verification integrated tool, including measurement and adjustment instrument and downhole string assembly, measurement and adjustment instrument has the mechanical arm assembly that can be radially opened and contracted;The flexible pressure transmission channel of being able to transfer fluid pressure is equipped in the mechanical arm assembly, and the opening piece that can open the preset fluid passage of the plugger is equipped in front end;Downhole string assembly includes eccentric water distributor and water nozzle plugger installed in the eccentric water distributor, one-way valve is equipped on the water nozzle plugger, and the adjusting interface that can be inserted with the front end of the mechanical arm assembly is equipped.The beneficial effects of the present application are that real-time same field same frequency of pressure data and adjustment action is realized, and real, real-time, in-situ formation pressure feedback is obtained.

The application relates to a high-frequency transformer magnetic core precise centering assembly device, which comprises a base, the top of the base is provided with a sliding frame, the top of the sliding frame is slidably connected with two bearing housings, the two bearing housings are provided with a magnetic core to be assembled for a high-frequency transformer, the inside of the bearing housing is provided with a fixing mechanism, the outside of the bearing housing is provided with a buffer mechanism, the buffer mechanism comprises a sliding rail fixedly connected to the outside of one of the bearing housings, the outside of the sliding rail is slidably connected with a floating block, the front end of the floating block is fixedly connected with a pressing rod, the outside of the other bearing housing is fixedly connected with a pressure transmission box, the outside of the pressure transmission box is fixedly connected with a hydraulic oil cylinder, and the hydraulic oil cylinder and the pressure transmission box are in communication. The application realizes automatic adjustment and closed-loop control of the pressing force, thereby limiting the maximum pressing force, avoiding damage of ferrite collapse and skeleton deformation, and ensuring stable output of the pressing force in the pressing process, so that the product qualification rate and long-term reliability are improved.

The utility model discloses a kind of hierarchical loading, hierarchical unloading drawing instrument, belong to drawing instrument technical field, its technical scheme main point includes device ontology and preloading frame, the top of the device ontology is provided with protection assembly, the side of preloading frame close to device ontology is connected with device ontology, the side of preloading frame away from device ontology is provided with movable block, the surface of movable block is connected with support mechanism, the side of support mechanism away from device ontology is connected with anti-bending assembly, when using, the drawing instrument of existing hierarchical loading, hierarchical unloading drawing instrument is easy to be bumped by outside, leading to component damage, affect measurement accuracy and equipment normal operation, simultaneously, the valve connecting pipeline of drawing instrument lacks effective support protection, easy to bend, cause medium flow to be blocked, pressure transmission is unstable, further affect the accuracy and reliability of drawing instrument hierarchical loading and unloading function.

To provide a working machine to improve responsiveness at low temperature. A working machine (1) includes a first outlet port (P1) and a second outlet port (P2) to allow hydraulic fluid to flow out therefrom, a plurality of first hydraulic actuators (A1) to be supplied with hydraulic fluid from the first outlet port, a plurality of second hydraulic actuators (A2) to be supplied with hydraulic fluid from the second outlet port, a load pressure selection valve (V15) to receive input of a load pressure on the plurality of first hydraulic actuators and a load pressure on the plurality of second hydraulic actuators, and output a highest load pressure which is higher one of the load pressure on the plurality of first hydraulic actuators and the load pressure on the plurality of second hydraulic actuators, a regulator (20) to receive input of the highest load pressure output from the load pressure selection valve and control a discharge rate of the hydraulic fluid from the first outlet port and a discharge rate of the hydraulic fluid from the second outlet port according to the input highest load pressure, a passage throttle (43) provided in a load pressure transmission passage (x3) provided between the regulator and the load pressure selection valve, and a bleed path (45) to allow a portion of the hydraulic fluid in a segment passage (44) to escape to a destination other than the regulator, the segment passage being a portion of the load pressure transmission passage that is located between the load pressure selection valve and the passage throttle.

The application discloses a preparation method of high-density, high-purity and large bulk polycrystalline omphacite aggregate, and the method comprises the following steps: completely sealing a omphacite sample powder in a ladle sleeve with a vacuum degree of 10 –3 Pa, placing the ladle sleeve in a graphite furnace cylinder body of a hot isostatic pressing device high-pressure container, covering a graphite sealing cover, taking argon as a pressure transmission medium, adopting a multi-gradient cylinder body temperature and pressure increasing mode to increase the temperature in the cylinder body sample bin to 1150 DEG C and the pressure to 98.6 MPa, and keeping temperature and pressure for 7.2 hours; reducing the temperature in the cylinder body sample bin to 177 DEG C at a rate of 15.95 DEG C / minute and reducing the pressure to 57.7 MPa at a rate of 0.67 MPa / minute; and finally, reducing the pressure to room temperature to obtain the polycrystalline omphacite aggregate, so that the technical blank of preparing a large bulk experimental sample of high-density polycrystalline omphacite aggregate under high temperature and high pressure conditions is solved.

This utility model relates to the field of impellers, and more particularly to a closed impeller resistant to riveting deformation. It includes an impeller with a bushing fixed along its axis. The bushing is connected to a drive shaft, enabling the drive shaft to rotate the impeller around its own axis. The impeller has a middle blade and a lower blade. The middle blade is fixed to one end of the lower blade, and the bushing is connected to the lower blade through a riveting member. A riveting plate is provided on the side of the lower blade away from the middle blade, and the riveting member passes through the riveting plate and is fixed to the lower blade. The outer edge of the riveting plate forms a bending-resistant portion, and the cross-section of the bending-resistant portion through the impeller axis is C-shaped. This application adds a riveting plate to the outside of the lower blade, allowing it to bear the riveting pressure instead of the lower blade, preventing deformation of the lower blade caused by riveting and ensuring the impeller's accuracy. The riveting plate uses a material with low hardness to effectively buffer and disperse the riveting impact, significantly reducing its own deformation and ensuring stable pressure transmission.

This utility model belongs to the field of seat armrest technology and discloses a seat armrest, including a frame and a support assembly. The support assembly is fixed to the frame, and a mounting sleeve is rotatably inserted into one end of the frame. The mounting sleeve is fixedly connected to the seat back by a locking bolt. A set screw is threaded on the mounting sleeve, and a screw rod is rotatably installed on the internal thread of the frame. The end of the screw rod near the mounting sleeve can abut against the set screw. Through the rotatable insertion and connection between the frame and the mounting sleeve, combined with the pressure transmission structure of the screw rod and the set screw, the user can drive the screw rod to rotate by rotating the adjustment knob, thereby driving the frame to rotate around the mounting sleeve, realizing flexible adjustment of the armrest tilt angle. This solves the problem that traditional fixed structure armrests cannot be independently adjusted as the seat back tilts, can adapt to the sitting posture needs of different users, and significantly improves the riding comfort.

The application discloses a multistage axial confining pressure ratio core holder suitable for hydrogen permeation and a method, relates to the field of rock seepage mechanics engineering, and comprises a chamber cover and a base. The top of the chamber cover is provided with an axial pressure chamber, and an axial pressure head is installed in the axial pressure chamber. A multistage axial pressure chamber structure is coaxially arranged in the axial pressure chamber. The base is provided with a hydrogen blocking sleeve, and a core chamber is formed in the hydrogen blocking sleeve. An axial pressure piston at the end of the axial pressure head is matched with the top of the hydrogen blocking sleeve, a confining pressure chamber is formed between the outer wall of the hydrogen blocking sleeve and the inner wall of the chamber cover, and the side of the confining pressure chamber is connected with an oil inlet pipe. The bottom of the core chamber is connected with a gas inlet pipe, and the top of the core chamber is connected with a gas outlet pipe. The axial pressure chamber is connected with the confining pressure chamber through multistage communication pipes, thereby forming a multistage axial confining pressure transmission structure. Valves are installed on the multistage communication pipes and are used for controlling the output ratio of the multistage axial confining pressure transmission structure. The application can realize the proportional output of axial pressure and confining pressure, and realize the miniaturization of the device.

The utility model relates to display screen detection technical field, and disclose a kind of compression resistance detection device for vehicle-mounted display screen, including detection machine, top driving element provides stable pressure power, workbench clamping piece fixes display screen, the pressure sensor of driving element output end has the function of pressure transmission and data capture, can real-time obtain the pressure value of touch rod and display screen contact, guarantee detection data accurate, lay foundation for compression resistance performance evaluation.Control component realizes touch rod two-way adjustment, one side of motion seat is connected reset spring, the other side pull line winding servo motor's take-up roll, servo motor take-up pull line cooperates reset spring, drive motion seat reciprocating movement along this direction;Two motion seat interval screw rod is driven by driving machine, motion platform sliding sleeve is connected in fixed sliding rod, sliding rod limit makes motion platform along rod translation, drive touch rod synchronous movement, two-way adjustment makes touch rod can flexibly cover display screen whole area, eliminate edge, corner and other key parts detection blind area.