274 results about "Pressure units" patented technology

Headphones may include a headband, a first earpiece connected to an end of the headband, and a second earpiece connected to the other end of the headband, wherein the first earpiece may include a first plate connected to an end of the headband, a first housing arranged on a surface of the first plate, a first ear pad contacting the first housing and aligned in a first direction in which the first plate and the first housing are arranged, and a first pressure unit between at least the first ear pad and the first housing, the first pressure unit may include a first pressure plate, and a first pressure pin between the first pressure plate and the first housing, a portion of the first pressure pin may be unconstrainedly accommodated in an inside of the first pressure plate, and the first pressure plate may be tiltable relative to the first housing.

The invention relates to the technical field of frozen soil sample confining pressure testing, and discloses a subarea temperature control dynamic confining pressure loading device suitable for an over-saturated frozen soil sample, which comprises a hydraulic machine device controlled by a console, an air pressure mechanism, a cooling mechanism and a multi-state confining pressure assembly, a flexible rubber three-dimensional strain stress sensing cylinder for accommodating a frozen soil sample is arranged in the middle of the multi-state confining pressure assembly, and a temperature sensor and a pressure sensor are arranged in the flexible rubber three-dimensional strain stress sensing cylinder; the multi-state confining pressure assembly is formed by stacking a plurality of groups of multi-state confining pressure units; according to the invention, complex stress transfer and non-uniform confining pressure among soil particles in a natural stratum can be simulated, and the simulation authenticity of the stress condition of the frozen soil sample is obviously improved. According to the invention, independent temperature control of soil body areas at different heights can be realized, a stable temperature gradient from the top to the bottom of a frozen soil sample can be accurately established, and a temperature boundary more conforming to field conditions is provided for research on mechanical behaviors of frozen soil.

The invention discloses a grouting splitting pressure simulation device under high-ground and high-water-pressure conditions, and relates to the technical field of tunnel and underground engineering model tests. A first water permeable unit controlled by the water injection unit and a second water permeable unit controlled by the confining pressure unit are respectively arranged at two ends in the length direction, so that water pressure and stratum confining pressure are independently applied. The integrated grouting unit of the device is used for grouting soil in the box and is provided with a comprehensive detection unit, the comprehensive detection unit monitors various parameters such as grouting pressure, water pressure, confining pressure, flow, soil resistance and wave velocity in real time, and independent loading and accurate dynamic control of the grouting pressure, formation water pressure and formation stress can be achieved; therefore, the grouting process of the deep-buried tunnel under the conditions of different burial depths, high water head differences and complex grout characteristics can be simulated in a laboratory with high precision, and the technical bottleneck that the complex environment of high ground stress and high water pressure coupling is difficult to reproduce in a traditional test method is effectively solved.

A glue scraper device for glass edge roll coating, comprising a vacuum fixture (1), a glass element (2), a slide table base (3), a glue scraper (4), and a negative pressure unit (5). The glass element (2) is arranged on the vacuum fixture (1), the slide table base (3) is arranged below the vacuum fixture (1), the glue scraper (4) is arranged on one side of the slide table base (3), and the negative pressure unit (5) is arranged at the bottom of the glue scraper (4). The glue scraper device stably controls the precision of the glue thickness between the edge of the glass element and the glue scraper, and mitigates the problems of excessive glue and glue overflow.

The hydraulic support roof beam maintenance press machine comprises a frame, a first pressure unit and a second pressure unit are arranged at the bottom of the frame, a first rotating driving part and a plurality of groups of pressing wheels are arranged on the first pressure unit, a fixed plate is arranged at the bottom of the second pressure unit, a plurality of pressing blocks are arranged on one side of the fixed plate at intervals, a second rotating driving part is arranged on the second pressure unit, a transmission gear is drivingly connected to the rotating output end of the second rotating driving part, a knocking block is eccentrically arranged on the transmission gear, the second rotating driving part can drive the transmission gear to rotate, so that the pressing blocks can be close to the fixed plate, and the fixed plate and the pressing blocks constitute a double-side pressure shaping structure of the hydraulic support roof beam side plate. The hydraulic support roof beam maintenance press machine is favorable for solving the problems that some existing press machines are fixed and difficult to break through the site limitation, and the maintenance of the hydraulic support roof beam side plate is time-consuming and laborious.

The utility model discloses a joint bearing axial clearance detection tool, which comprises a pressing unit, a loading unit and a detection unit, and is characterized in that the pressing unit comprises an outer ring pressing assembly and an inner ring fixing assembly, and the outer ring pressing assembly presses and fixes an outer ring of a joint bearing; the inner ring fixing assembly fixes an inner ring of the knuckle bearing in the axial direction. The loading unit comprises a loading push rod, and the loading push rod can be controlled to push and pull the inner ring of the knuckle bearing with a set load so as to drive the inner ring of the knuckle bearing to move relative to the outer ring of the knuckle bearing in the axial direction; the detection unit comprises a displacement detector, and the displacement detector is used for detecting the axial clearance of the knuckle bearing; the pressing unit can respectively fix the inner ring and the outer ring of the joint bearing to be detected, the loading unit drives the inner ring to move relative to the outer ring with a set load, and the detection unit feeds back the size of the axial clearance through the displacement of the guide shaft or the pressing block. The detection tool provided by the utility model can effectively detect the size of the axial clearance of the knuckle bearing.

The invention relates to a negative pressure wall-climbing robot based on an organ type plush sealing ring and a variable-diameter tire structure, which comprises a base, the bottom of the base is provided with an adsorption unit, and the adsorption unit is detachably connected with the base; a negative pressure unit is arranged on the base, and the negative pressure unit is fixedly arranged on the base and is communicated with the adsorption unit; a plurality of parallel driving units are arranged on the adsorption unit, telescopic rods are arranged on the driving units, variable-diameter tires are arranged on the two sides of the base and connected with the telescopic rods, and the variable-diameter tires are driven by the driving units to rotate to move; a telescopic structure is arranged on the side, close to the variable-diameter tire, of the base, a telescopic driving module is arranged on the telescopic structure, a side plate is arranged on the telescopic driving module, and the side plate is connected with a telescopic rod in a matched mode. The invention aims to solve the problems of contact adaptability and movement stability of the negative-pressure wall-climbing robot on wall surfaces with different curvatures and roughness or when the negative-pressure wall-climbing robot passes through a narrow space.

The invention relates to a rotary press comprising a rotor which can be rotated by means of a rotary drive and which has upper and lower punch guides for upper and lower press punches and a die plate arranged between the punch guides, the press punches interacting with the cavities of the die plate, and a filling device, the invention relates to a rotary press for filling a powder material to be pressed into a cavity of a mold disc, comprising a pressure device having an upper and a lower pressure unit which, during operation, interacts with an upper and a lower pressing punch in order to press the powder material in the cavity into a pressed article, comprising a scraping device, and a scraping device for scraping off the pressed product ejected onto the upper side of the mold plate by the lower pressing punch after pressing, the scraping device having a scraping channel arranged at least partially above the mold plate in order to guide the pressed product ejected onto the upper side of the mold plate from the mold plate to the first pressed product outlet along the scraping channel.

The invention discloses a marine cable extrusion testing device and method, and the device comprises a portal frame, supporting members, a pressing block, a first dynamic pressure unit, a second dynamic pressure unit, a first static pressure unit, and a second static pressure unit, a sample cable horizontally penetrates through the portal frame, the supporting members are disposed at two ends of the sample cable, and are used to horizontally support the sample cable, and the pressing block is used to press the sample cable. The first dynamic pressure unit, the second dynamic pressure unit, the first static pressure unit and the second static pressure unit are distributed in the portal frame in an annular array mode with the sample cable as the circle center, and the pressing blocks are arranged at the ends, facing the sample cable, of the first dynamic pressure unit, the second dynamic pressure unit, the first static pressure unit and the second static pressure unit respectively. The relationship between the extrusion force and the section shape of the marine cable can be determined by calculating the ovality of the sample cable under the specified pressure, and the influence of extrusion on the section of the sample cable is evaluated by measuring the ovality change of the sample cable before and after the extrusion experiment, so that the extrusion performance and the engineering application range of the sample cable are analyzed.

The present application relates to a kind of laser welding devices of noble metal plate, including mould unit, heavy down pressure unit and laser unit;Mould unit is used to support noble metal plate, heavy down pressure unit is used to press the welding portion of noble metal plate, laser unit is used to carry out laser welding to the welding portion of noble metal plate;Heavy down pressure unit includes: first heavy down pressure unit, for the first end of the noble metal plate is positioned on the mould unit;Second heavy down pressure unit is used to position the second end of the noble metal plate in the form of being stacked above the first end of the noble metal plate on the mould unit;And third heavy down pressure unit is used to beat the noble metal plate;Wherein, the first heavy down pressure plate of first heavy down pressure unit and the second heavy down pressure plate of second heavy down pressure unit are located on the side of preset weld position when down pressure, the third heavy down pressure plate of third heavy down pressure unit covers preset weld position when down pressure and can be dragged to the other side of preset weld position.

The invention discloses a green building new material detection device for buildings, and relates to the technical field of sealing material performance detection.The green building new material detection device comprises a tank body, a lifting module is fixedly installed on one side of the tank body, a top cover is inserted into the upper side of the interior of the tank body through a lifting assembly, and the outer wall of the top cover is sleeved with a sealing ring; according to the green building new material detection device for the building, when air tightness detection is carried out on a sealing material, if a detection result is abnormal, the pressing unit is pressed downwards through the pressure unit, and multi-point pressing is carried out on the sealing material through cooperation of the pressing mechanism, so that the sealing material is deformed; if the crack and the dark damage are opened, the air pressure is quickly leaked, at the moment, the sealing material sample needs to be replaced for detection, and if the crack and the dark damage do not exist, the air tightness detection of the sealing material is unqualified, so that the influence of the crack and the dark damage of the sealing material on the detection result is eliminated.

The utility model provides wooden door and door pocket fine cutting equipment and a saw carriage structure thereof.The wooden door and door pocket fine cutting equipment comprises a shell, the upper side face of the shell is provided with a machining face, and the machining face is provided with a cutter groove and a negative pressure area; the saw blade unit is arranged in the shell; the saw blade unit comprises a longitudinal cutter set and a lifting assembly, the longitudinal cutter set corresponds to the cutter groove, and the lifting assembly is in driving connection with the longitudinal cutter set; and the negative pressure unit is connected with the negative pressure area and is used for enabling the negative pressure area to be in a negative pressure state. According to the saw carriage structure, the negative pressure area can be used for carrying out negative pressure adsorption and fixation on a plate on the machining face, and the plate is prevented from deviating in the cutting process; and the longitudinal cutter set is driven by the lifting assembly to ascend and expose the cutter groove to cut the plate, and descends into the shell when working is not needed, so that operation accidents caused by the fact that the longitudinal cutter set is exposed outside are avoided, and safety and reliability are achieved.

This utility model discloses a dart impact testing machine for measuring material properties, comprising: a base with a mounting groove on its surface, a negative pressure chassis slidably inserted into the inner wall of the mounting groove, a mounting unit for limiting the position of the negative pressure chassis on the inner wall of the mounting groove, a negative pressure groove on the top of the negative pressure chassis, a pressure plate above the negative pressure chassis, a negative pressure unit, and a first driving unit, wherein the negative pressure unit applies negative pressure to the inside of the negative pressure groove. In this utility model, by creating a lifting groove on the surface of the base, and with a lifting block slidably inserted into the inner wall of the lifting groove, during use, the user rotates a threaded rod, which drives the lifting block, threaded onto the surface of the threaded rod, to slide along the inner wall of the lifting groove, thereby controlling the height of the impact dart and thus controlling the impact force.

The utility model relates to a lubricating oil filter bypass sensor tester, which comprises a box body, an operation panel is arranged on the box body, a power supply, a test adapter, a temperature unit and a pressure unit are arranged in the box body, the operation panel is provided with a test interface, a temperature regulation panel and a pressure regulation knob, the temperature unit comprises a temperature platform, and the pressure unit comprises a gas source and a temperature platform. The test interface is arranged at the bottom of the box body, the test adapter is fixedly arranged above the test interface and is respectively connected with the power supply and the temperature regulation panel, the air source is fixed at the bottom of the box body and is respectively connected with the test adapter and the pressure regulation knob, and an input port of the test adapter is arranged in the test interface and is connected with a to-be-tested lubricating oil filter bypass sensor through the test interface; the temperature adjusting panel is used for setting the temperature of the temperature platform, the pressure adjusting knob is used for adjusting the output pressure of the air source, the output pressure is presented in the form of a portable function test box, the actual working temperature and the environment pressure of the sensor can be accurately simulated, and the test safety and accuracy are improved.

The application discloses a kind of intelligent adjusting device and method of seat, it is related to intelligent seat technical field, including support unit, the rear side of the support unit is welded with rear side fixed frame, the middle part of the rear side fixed frame is rotatably connected with second transmission rod, backrest frame is rotatably arranged on the second transmission rod, the left and right sides of the bottom of the backrest frame are provided with limiting unit, the upper portion of the support unit is welded with positioning unit, the middle part of the positioning unit is slidably with down pressure unit.The application is used when user seats, down pressure cylinder generates vertical displacement under human body pressure, is sequentially driven by rack plate, first gear, bevel gear set, second gear, third gear, and the angle adjustment of backrest frame is completed by the synchronous drive of second transmission rod, can be automatically completed attitude adaptation according to the weight of passenger, seat posture, corresponding seat posture can be matched for different groups of people such as thin, normal, heavy etc.

The utility model discloses a spring strong pressure equipment, including work table, positioning unit, loading unit and strong pressure unit, the positioning unit is in the work table, the loading unit and strong pressure unit are located above the positioning unit, the positioning unit includes turntable and positioning subassembly, the positioning subassembly is provided at the top of turntable, the turntable is located above the loading unit, and the loading unit is located above the strong pressure unit. A positioning hole and a threaded hole are formed in the positioning assembly, the strong pressing unit comprises a strong pressing head, the strong pressing head is provided with a strong pressing screw rod and a strong pressing block, the strong pressing screw rod corresponds to the threaded hole in position, and the strong pressing block corresponds to the positioning hole in position. The automatic feeding device has the advantages that the automatic feeding device is provided with the feeding unit, the automatic feeding effect can be achieved, continuous feeding can be achieved, working efficiency is improved, labor cost is reduced, and safety accidents caused by manual feeding are completely eradicated; the device is provided with a plurality of separable strong pressure heads.

The invention belongs to the technical field of agricultural irrigation, and particularly relates to an irrigation spraying device for agricultural breeding and a use method.The irrigation spraying device comprises a water and fertilizer bin, a pressure unit is arranged at one end in the water and fertilizer bin, a shaping unit is arranged at one end of the pressure unit, and an external unit is arranged in the space of one side outside the water and fertilizer bin; through linkage cooperation between the corner balls and the crescent rings, the shape of the outer wall of the water pipe is'destroyed ', the nonlinear state of a traditional water pipe outer wall concave or wrinkled area is broken, namely, the water pipe outer wall concave or wrinkled area is linearly unified, then the water pipe outer wall concave area is regularly'repaired', the repairing difficulty of the water pipe outer wall concave or wrinkled area is reduced, and the repairing efficiency is improved. The instantaneous pressure difference phenomenon existing in the water pipe fluid transportation process is improved, water and fertilizer mixed liquid retention is prevented, local accumulation of the water and fertilizer mixed liquid is reduced, and the phenomenon that the water and fertilizer mixed liquid is sprayed unevenly is reduced.

The present invention relates to a device for applying pressure to a body part of a subject, wherein the device comprises a plurality of pressure units and each pressure unit comprises a support structure and a movable member having three translational degrees of freedom relative to the support structure, wherein each pressure unit is connected or connectable to a control unit adapted to control the movement of the movable member relative to the support structure of the pressure unit.

The present invention discloses a sulfur hexafluoride gas analysis and tail gas recovery system and control method. The system is provided with a first throttle valve and a negative pressure unit. Under the action of a control module, whether pressure fluctuations or airflow fluctuations occur inside a gas analyzer, the fluctuations can be smoothed by adjusting the opening of the first throttle valve and the air pressure of the negative pressure unit. Therefore, the gas analyzer can detect the target gas under stable air pressure and airflow, thereby ensuring the accuracy of the detection.

This invention relates to a confining pressure testing device for testing cubic rock blocks. It includes an outer shell and multiple confining pressure units, each unit comprising a pressure pad, an inner pad block, an outer pad block, an inner bladder, and a connector. The pressure pad is embedded in the inner and outer pad blocks; the inner pad block is not fixedly connected to the pressure pad, while the outer pad block is fixedly connected to the pressure pad. The connector connects the outer pad block to the outer shell. Multiple inner pad blocks surround the rock block. The pressure pad has a laminated structure. The pressure pad, the inner pad block, and the outer pad block form a closed cavity. The inner bladder is disposed within the cavity. After being filled with fluid and expanding, the inner bladder adheres tightly to the inner surface of the cavity. Pressure is transmitted to the rock block through the inner pad blocks, forming confining pressure on the rock block. This invention reduces the deformation and weight of the confining pressure testing device through structural optimization and material improvements to the pressure pad.

The invention discloses a clinical compression hemostasis device for the general surgery department, and relates to the technical field of medical instruments. The clinical compression hemostasis device for the general surgery department comprises a clamping mechanism, a clamping block, a sliding piece, an air bag, an inflation device and a locking mechanism. The clamping mechanism comprises two clamping ends capable of relatively moving and a driving assembly for driving the two clamping ends to be close to or far away from each other, and the driving assembly can lock and maintain the relative positions of the two clamping ends so as to resist separating force which is applied externally and enables the two clamping ends to be far away from each other; the two clamping blocks are oppositely arranged and connected to the two clamping ends of the clamping mechanism correspondingly. The two sliding pieces are in sliding connection with the two clamping blocks in the clamping face directions of the clamping blocks correspondingly. The number of the air bags is two. The clinical compression hemostasis device for the general surgery department can be firmly locked in a compression state, prevents the compression unit from accidentally loosening, and supports flexible adjustment of the action area of the compression unit according to the wound position.

The invention relates to the field of geopolymer processing, in particular to a geopolymer processing device which comprises a pretreatment unit, an activation unit and a negative pressure unit. The pretreatment unit realizes integration of crushing, screening and drying of raw materials through built-in steel balls, a crushing roller with sieve pores and a multi-stage hot air drying system; the activation unit adopts an inner and outer cylinder structure, and materials are uniformly mixed through angle-adjustable stirring blades and dynamic spraying of an activating agent; and the negative pressure unit is used for defoaming by stages through gradient negative pressure, and is combined with linkage control of the sealing part and the feeding part, so that the defoaming efficiency is remarkably improved. According to the device, through modular integration and process optimization, the problems that a traditional processing flow is dispersed, the energy consumption is high and the product quality is unstable are solved, and the device is suitable for large-scale industrial production.

The present invention discloses a vacuum cleaner, which comprises a body, a negative pressure assembly disposed within the body, a dust separation assembly disposed upstream of the negative pressure unit, and a dust collection assembly cooperating with the dust separation assembly. The dust separation assembly at least includes a filtering unit detachably assembled within the body. Wherein, a sealing gasket is provided between the filtering unit and the body. The sealing gasket at least includes a flexible main body portion fixedly connected to one of the body or the filtering unit, and a first lip portion extending from the flexible main body portion towards the other of the body or the filtering unit. The included angle between the first lip portion and the main body portion is an acute angle and the opening of the included angle faces upstream of the filtering unit, so as to enhance the sealing effect and sealing stability between the filtering unit and the body.

Pressure unit (210) for a drive unit (150) for driving a web-shaped recording medium (120); wherein the pressure unit (210) comprises, - a pivoting arm (213) with a pressure roller (212), wherein the pivoting arm (213) is designed to pivot a main axis of rotation (211) away from or towards a drive roller (200) of the drive unit (150), so that a gap between the pressure roller (212) and the drive roller (200) is increased or decreased; - a fork (214) arranged on the swivel arm (213); - a camshaft (225) with a cam (222), wherein the camshaft (225) is designed to be rotated about a shaft axis of rotation (221), while the cam (222) is arranged in an opening of the fork (214), so that when the camshaft (225) is rotated, the pivot arm (213) is pivoted away from or towards the drive roller (200) of the drive unit (150) by the cam (222), depending on the direction of rotation; - the camshaft (225) or a lever (220) on the camshaft (225) has a first dowel pin (223) which extends radially away from the camshaft (225) at a first angular position, and a second dowel pin (223) which extends radially away from the camshaft (225) at a second angular position; - the pressure unit (210) comprises an end stop (224) for the first dowel pin (223) and for the second dowel pin (223) which is designed to limit the rotation of the camshaft (225) to angular positions between the first and the second angular position; - the end stop (224) is removable; - the camshaft (225) is designed to be rotated beyond the second angular position when the end stop (224) is removed; and - the pressure unit (210) is designed such that the cam (222) is moved out of the opening of the fork (214) when the camshaft (225) is rotated beyond the second angular position.

The present invention relates to a massage device, and more particularly, to a massage device equipped with a separate pressure unit. A massage device equipped with a separate pressure unit according to one aspect of the present invention includes a pressure unit having first and second pressure members arranged along a width direction to apply pressure to a user's body, and first and second pressure plate members supporting the first and second pressure members, respectively, and a lift unit having first and second lift members for raising and lowering the first and second pressure plate members, respectively, and first and second lift drive members for providing driving force for the first and second lift members, respectively.

The utility model discloses a turnover waste removal device which comprises a carrier plate, a first mounting part and a second mounting part, a product to be subjected to waste removal is fixed on the carrier plate; a waste removing module is arranged on the first mounting part, the waste removing module at least comprises one negative pressure unit, and the negative pressure unit forms an air flow channel which is through up and down; the second mounting part is arranged above the waste removing module, the carrier plate is fixedly mounted on the second mounting part, and the spatial position of the carrier plate is adjusted by the second mounting part; the first mounting part and the second mounting part are configured to be used for adjusting the carrier plate and the negative pressure unit to relative positions; the relative position is that the product to be subjected to waste removal faces the negative pressure unit, and the gap between the carrier plate and the negative pressure unit is within a set range; and then downward airflow is formed in the airflow channel through the negative pressure unit, airflow is formed in the gap between the carrier plates located on the two sides of the airflow channel and the negative pressure unit, the airflow is collected to the airflow channel to flow downwards, and the dust and the waste are conveyed downwards along with the airflow, so that the dust and the waste are effectively removed.

The invention relates to the technical field of copper wiring terminal machining, in particular to a corrosion-resistant copper wiring terminal machining device and method.The corrosion-resistant copper wiring terminal machining device comprises a machine base, an unwinding roller, a material shaking mechanism and a conveying mechanism are sequentially arranged on the machine base, a hot pressing roller is further arranged on the conveying mechanism, and the conveying mechanism is connected with a braking unit and a selective linkage unit through an air pressure unit; when the air pressure unit detects that the air pressure in the piston cavity is not within the set threshold value range, the braking unit brakes the swing shaft, and the selective linkage unit switches the gear and the swing shaft from fixed connection to sliding connection; and the mounting seat is used for mounting the unwinding roller, and when the air pressure unit detects that the air pressure in the piston cavity does not belong to the set threshold range, the position of the unwinding roller is adjusted step by step until the air pressure in the piston cavity belongs to the set threshold range. The tension of the copper sheet can be monitored when the copper sheet is flapped, so that the position of the unwinding roller is adjusted step by step, the copper sheet is prevented from sliding and even being broken due to overlarge tension, and the machining quality of the copper sheet is improved.

A shock assembly includes a damper chamber; a piston rod received in the damper chamber; a damping piston connected to the piston rod, moveable within the damper chamber, and defining first and second chamber portions; an internal floating piston defining a third chamber portion, being disposed between the second and third chamber portions, and being axially moveable between first and second positions; a fluid received in the first and second chamber portions; a pressuring unit received in the third chamber portion; a magnetic element connected to the internal floating piston; first and second hall sensors configured to respectively provide first and second position readings of the internal floating piston based on a position of the magnetic element; and a processor communicatively connected to the first and second hall sensors and being configured to determine a position of the internal floating piston based on the first and second position readings.