623 results about "Plate pressure" patented technology

A method to suck pressure relief firedamp along Y-shape ventilating gob roof of the empty tunnel is characterized in that: in the high-firedamp coal mining working-face pressure relief zone along the empty tunnel gob roof, it sucks the stripping and free firedamp from the exploiting and pressure relief layer which gathers in the gob upper part and the ring slit loop through the slit channel formed by the mining influence on the gob upper rock stratum through the dip sucking firedamp bore-hole which are distributed in the pressure relief ring slit loop. The pressure relief ring slit loop locates in the separation layer slit zone above the caving zone on the Y-shape ventilating working-face along the empty tunnel gob roof. The invention resolves the air firedamp overrun in the corner and the return airway on the coal mining working-face basically, realizes the sucking and application of the high density firedamp, improves the resource utilization ratio, exploits the high firedamp coal seam without coal wedges, improves the mine resource recovery and assures the high-efficiency and safe exploitation of the coal mining working-face.

The invention relates to the field of deviation correction in hot continuous rolling, in particular to a control method of automatic deviation correction, which comprises the following steps of: 1, controlling the opening of a side guide plate in a strip steel entering state; 2, opening the side guide plate position detection to control roller gap deviation correction; 3, opening the side guide plate pressure detection to control roller gap deviation correction; and 4, controlling the opening of the side guide plate in a strip steel throwing state, closing the side guide plate pressure detection when the tail of the strip steel leaves from a first stand, and entering the control of the opening of the side guide plate until the strip steel completely leaves from a continuous rolling stand. The control method is perfected by using the traditional equipment condition, adopts a positive and effective means for the treatment of deviation, realizes automatic deviation correction on the strip steel, improves the rolling stability, is accurate in control and capable of ensuring the stability of hot rolling production, and has wider popularization value.

The invention discloses a coal and rock dynamic disaster multi-parameter wireless monitoring comprehensive early-warning technology and method. The technology and method involve a data acquisition unit, a data storage and processing unit and a comprehensive early-warning unit. According to the technology, on the basis of the advantage that an intelligent line supports a brand new wireless digital communication system with the high-precision positioning and wireless access capacity in a closed special environment by means of the internet of things and a communication technology, with a working face coal body physical signal as a basis, an underground coal mine gas concentration sensor, a coal body stress gauge, a top plate pressure monitoring system, a sound emitting and monitoring system, an electromagnetic radiation monitoring system, a microearthquake system and a sensor of the microearthquake system are in wireless docking with the intelligent line, an underground wireless monitoring early-warning associated equipment is researched, a coal and rock gas dynamic disaster wireless multi-parameter judgment method and coal and rock gas dynamic disaster wireless multi-parameter judgment indexes are established, a coal mine coal and rock gas dynamic disaster wireless multi-parameter remote monitoring and early-warning system is formed, and a coal mine coal and rock gas dynamic disaster wireless multi-parameter remote monitoring comprehensive early-warning platform is developed.

The invention discloses a process for manufacturing a 12OZ thick copper multilayer circuit board. In an inner layer etching process, the concentration of CU2+ in an acid copper chloride etching solution is controlled to be 150+/-20g/l, the temperature is 50+/-3 DEG C, total acidity is 2.8+/-0.6N, specific gravity is 1.30+/-0.10, etching speed is 1.2+/-m/min, and the number of etching times is 4 times; a plate pressing process comprises a hot pressing step and a cold pressing step, wherein the hot pressing time is 200 minutes, a system is vaccumized at absolute pressure of 10mbar between the fifth minute and the ninety-fifth minutes, the maximum press plate pressure is controlled to be 21.42Kgf/cm2, and the temperature is 190 DEG C; the time for cold pressing is 110 minutes, and the maximum press plate pressure is controlled to be 18.36Kgf/cm2; when the diameter D of a prebored hole is more than or equal to 2.0mm and is less than 4.8mm, a drill bit with diameter d of less than or equal to 1.7mm is used to prebore 4 holes, and the holes are redrilled by using a drill bit with the diameter D. The process has the advantages of improving the etching factors of the plate material of the inner layer, reducing the side etching effect with good plate pressing effect and protecting the bored holes from the phenomenon that the holes are blocked by copper scarp.

The invention discloses a middle frame manufacturing method and a middle frame structure and belongs to the technical field of 3C small household electrical appliances. The middle frame manufacturing method provided by the invention comprises the following steps: after splicing a plurality of bottom borders and a plurality of side borders, which are manufactured by punching metal profiles, into an outer border and conducting pressure casting on a metal plate to manufacture a middle plate, fixing the middle plate in a die cavity, carrying out primary injection molding to form a plastic part, then conducting glue binding on the outer border, the middle plate and the plastic part to form the middle frame structure, and finally carrying out secondary injection molding and surface treatment on the middle frame structure. As for the method, by adopting a metal plate pressure casting and injection molding technology, processing steps are simplified, the processing difficulty is lowered, the processing time is saved, the utilization ratio of raw materials is also increased, and thus the processing cost is lowered. The middle frame structure processed and formed by the method has attractive, fashionable, high-end and elegant appearance and has the advantages of simple structure, strong integrality, low cost, good heat dissipation performance, high whole strength and the like.

The invention provides a clamping rotary cutting type underactuated two-finger grape picking device, which mainly comprises underactuated finger mechanisms, a rotation mechanism, a pushing mechanism, a rotary cutting mechanism, a wrist connecting mechanism, a main support plate and a binocular camera, wherein the underactuated finger mechanisms are distributed at two sides of the main support plate; the wrist connecting mechanism is connected with the rotation mechanism; the rotation mechanism is connected with the main support plate; the pushing mechanism is connected with the rotation mechanism; the rotary cutting mechanism is connected with the pushing mechanism; the wrist connecting mechanism is connected with the waist of a mechanical arm; a motor A drives the underactuated finger mechanisms to move; through the effects of an S-shaped pressure sensor, a potentiometer, a flat plate pressure sensor and a tension spring, the flexible target object gripping and the closed loop real-time control on the underactuated finger mechanisms by a controller are realized; the rotary cutting mechanism controls a circular disc cutter blade to realize rotary cutting action on target fruit stems through a direct current motor. The grape picking device has the advantages that the structure is ingenious; the flexibility is high; the finger pose work space is large; high picking success rate can be obtained; the mechanical damage to plants and fruits can be reduced; the picking on clustered fruits such as grapes can be realized; the characteristics of self-adaption capability to the fruit shape and contact force controllability are realized.

The invention provides a manufacturing method of integrated square fire-resisting damper valve buckle body molding, comprising the following process steps: carrying out blanking on a complete board with a plate shearing machine according to the ordered size of the valve body and cutting into a rectangular panel veneer; carrying out working procedure processing like corner cutting, notching, punching and the like on the panel veneer with a press tool; performing bending operation of the flange edge at the two sides of the panel veneer with a bending machine; carrying out molding operation on the square frame body with a valve body molding device; and finally adopting welding or riveting operation at the seam position to finish the processing of the valve body frame body in the end. The invention has the following advantages: the method only needs shearing the board once, and the manufacturing can be completed through press working; compared with the current board-shearing and tailor welding four times, the method in the invention leaves out a plurality of working hours and reduces the disadvantages of size deformation; the total processing time of the frame body can be saved by 59.5%, thus the cost of the valve body is substantially lowered; the integrated board is under press working with almost no deformation; and welding is only carried out on the joint at one side, and the generated air leakage rate of the weld porosity is reduced to 25% of the original air leakage rate.

The invention discloses a pressure relief type explosion-proof tank, which comprises a tank body and a tank bottom, wherein a cover plate with cover plate pressure relief holes is arranged on the top of the tank body; the tank body consists of an inner cylinder and an outer cylinder; the outer cylinder consists of an outer cylinder wall and an outer cylinder buffer layer arranged in the outer cylinder wall; the tank bottom is provided with an outer cylinder wall bottom plate; a buffering base plate is arranged on the upper part of the outer cylinder wall bottom plate, on the inner side of the outer cylinder buffer layer and on the lower part of the inner cylinder; outer cylinder wall pressure relief holes are formed on the outer cylinder wall bottom plate; the inner cylinder consists of an inner cylinder wall and an inner cylinder buffer layer in the inner cylinder wall; a buffering lining plate is arranged on the lower part of the cover plate and on an inner side of the inner cylinder buffer layer; the buffering lining plate and the buffering base plate are made of porous foam metals; the inner cylinder buffer layer and the outer cylinder buffer layer are made of closed pore foam metals; and the thickness of the buffering base plate is greater than that of the buffering lining plate. By the explosion-proof tank, fragments produced through explosion can be prevented from flying out of the tank so as not to damage surrounding equipment and crowd, the internal pressure of the tank body can be reduced through pressure relief, and the safety performance of the explosion-proof tank is improved.

The invention relates to a one-off undrawn vibration filter plate pressure filter used in the small and medium type solid-liquor separation industry, which comprises a thrust strip, a filter component, a girder, a pressure strip, a cylinder, a cylinder seat, a frame, a hydraulic system and an electric control system. A draw plate system connects all filter plates of the filter component with the pressure strip, the vibration filter plate system is positioned under the filter plate handle of the filter component, and the filter plate handles are corresponding to vibration bump blocks respectively. The pressure filter has the advantages: firstly, the problem of low automation is solved, total automation control in the process of solid-liquid separation is realized conveniently; secondly, the present situations of low work efficiency, high labor intensity and bad working environment are changed; thirdly, the shortcomings are solved that the effect of cake-discharging existing in background technology is not ideal and manual assistance in cake-discharging is needed, thus leading to realizing the automation in the process of cake-discharging, and the effect of cake-discharging is better.

The invention discloses a nitriding method of an oriented silicon steel, which is mainly characterized in that the plasma nitriding treatment is performed in a plasma nitriding chamber; the infiltration capacity and the distribution of N elements, and the size of nitride are controlled through controlling the conditions in the plasma nitriding chamber, wherein, the N element and nitride are permeated into the oriented silicon steel; the plasma nitriding chamber satisfies the conditions that nitriding temperature ranges from 500 to 700 DEG C, the nitriding time is 10 to 30 seconds, nitriding atmosphere comprises H2 which accounts for 0 to 10 percent, NH3 which accounts for 0 to 5 percent, and N2 which accounts for the rest, the vacuum degree of the plasma nitriding chamber ranges from 1000 to 2000Pa, and the polar plate pressure is 700 to 1000V. The plasma nitriding method is adopted in the manufacture of the oriented silicon steel can lead the nitriding effect to be uniform, enhance the inhibitory capacity of an inhibitor, and increase the technologic stability.

The invention discloses a cleaning robot. The cleaning robot comprises a snap-cover body, a display operation battery box body, a dust collection filter box and a dust collection filter box seat groove, and further comprises a water tank body and a mop assembly, wherein the water tank body is positioned on the back side of the upper end of a base; the mop assembly is positioned on the back side of the lower end of the base and consists of a mop plate, a mop plate pressure part, mop, quick-connection stickers and a collodion sheet; the dust collection filter box is used for filtering dust and purifying air subjected to dust filtering; an inner space of a dust collection box body between a dust inlet of the box body and an air suction hole of the box body is divided into a dust collection chamber and labyrinthic filter chambers by first and second partition plates arranged at an interval; a filter fiber material is arranged in the first filter chamber; and an active carbon material is arranged in the second filter chamber. The cleaning robot has a function of purifying indoor air in addition to floor cleaning and dust collection functions, can clean the cleaned ground by the wet mop, has the advantages of simple structure, reasonable layout, low manufacturing and use costs and good use effect, And is convenient to transform.

Processes are disclosed for producing plastic containers from thermoplastic sheets where the thermoplastic sheets are processed in parallel to form a low permeation plastic container. A plurality of thermoplastic sheets are progressively heated to a first temperature in a pre-conditioning stage. A group of the thermoplastic sheets are selected from the plurality of thermoplastic sheets and rapidly heated to a second temperature in a final heat stage. The group of thermoplastic sheets are then processed in a forming stage to form the low permeation plastic container.

The invention discloses an earth pressure balance (EPB) shield residual soil pressure control model test apparatus. The model test apparatus mainly comprises a truss type loading system, a cutterhead, a sealed compartment, a screw conveyer and a pressure transducer system. The truss type loading system is connected with a reaction frame through a jack. Excavation surface loading can be realized by thrust of the jack. The cutterhead and the screw conveyer are driven by a motor. The pressure transducers are arranged on different positions of a sealed compartment separator plate and a screw conveyer housing. Pressure data is monitored by PC software through data an acquisition instrument. By using the apparatus, under the conditions of different modified residual soil, different sealed compartment pressure or different screw conveyer rotating speeds, and through monitoring typical position residual soil pressure of the sealed compartment separator plate and the screw conveyer, residual soil pressure transmission mechanism in the earth pressure balance (EPB) shield sealed compartment and the screw conveyer can be verified; a mapping relation between excavation surface pressure and thesealed compartment separator plate pressure and a pressure variation relation between an inlet and an outlet of the screw conveyer can be established. Therefore, an earth pressure balance (EPB) shield construction can be guided.

The invention discloses a pressure control method for a coiling machine side guide plate and belongs to the technical field of coiling machines. According to the selection of the pressure control method for the coiling machine side guide plate, pressure control is adopted in one side, and position control is adopted in the other side; after strip steel enters the coiling side guide plate, the side guide plate pressure control side executes pressure control, and real-time judgment is carried out on actual measurement of actual measurement pressure P and setting of a set pressure value P of the side guide plate pressure control side; judgment is carried out according to the position motion situation of the side guide plate pressure control side; finally, judgment is carried out according to the size of the actual measurement of the actual measurement pressure P and the size of setting of the set pressure value P of the side guide plate pressure control side, and the size of the actual measurement of the opening degree GAP and the size of setting of the set opening degree GAP of the two sides of the side guide plate, and the situation of the tail of the strip steel entering the side guide plate. According to the pressure control method for the coiling machine side guide plate, the problem of the steel roll tower shape caused by the fact that the side guide plate pushes the strip steel in a deviating mode can be prevented, the problem of the control disorder caused by abnormal pressure control under the circumstance of the pressure sensor failure is avoided, and layer staggering and edge cracking of steel rolls are effectively avoided.

The invention discloses a fruit picking robot which comprises a grabbing part, an arm part, a fruit stem shearing part, a visual system, a lifting part, a rotating part and a movable base, wherein thegrabbing part is connected with the arm part, the arm part is connected with the lifting part, the visual system is located above the grabbing part and is connected with the arm part, the fruit stemshearing part is connected with the arm part, the lifting part is connected with the rotating part, and the rotating part is connected with the movable base; the fruit picking robot is exquisite in structure, the flexibility degree is high, the working space is large, and an s-shaped pressure sensor, a flat plate pressure sensor and a tension spring are utilized, so that the closed-loop real-timecontrol of a finger connecting rod mechanism I by a controller can be realized, a target object is flexibly grabbed, and mechanical damage caused by picking is reduced; the lifting part and the rotating part increase the picking freedom degree, fruit stems are retained while the target is picked by the shearing part, and fruits can be stored more easily.

The invention discloses compaction technology and a compaction device for an iron core of an electric reactor. Firstly, a screw which is fixed on a lower yoke and passes through a coil and an upper yoke is firmly screwed by a nut; a pressure transfer device passes through the screw until the pressure transfer device contacts the upper yoke; a lower platen is arranged on the pressure transfer device through the screw, and is at least provided with two guide posts, and the guide posts are symmetrically arranged relative to the screw or are evenly arranged along the periphery of the screw; each guide post is provided with a small tonnage hollow jack, and the jack is fastened by an upper platen through a transition nut; a hydraulic system of each jack is simultaneously supplied with oil, the jack acts downward, and the nut is firmly screwed when a clearance appears between the nut and the upper yoke; and finally the whole compaction work is finished after the transition nuts, the upper platen, the jacks, the lower platen and the pressure transfer device are orderly removed. The compaction technology and the compaction device flexibly combine the quantity of small jacks according to the needed jack tonnage and the tonnage of the prior small jacks, and have the characteristics of simple structure, low processing cost, and convenient use.

The invention discloses a dynamic speed control system of a coal mining machine for a coal mine high-gas fully mechanized coal mining face. The dynamic speed control system comprises the coal mining machine, a plurality of hydraulic brackets, bracket controllers, pressure sensors, gas detectors, a signal converter and a monitoring host, wherein the fully mechanized coal mining face comprises the hydraulic brackets; one bracket controller, one pressure sensor and one gas detector are arranged on each hydraulic bracket; the signal converter is arranged on the hydraulic bracket at the end of the fully mechanized coal mining face; the bracket controller of each hydraulic bracket is connected with the signal converter, and working face top plate pressures and working face gas concentration data are transmitted to the monitoring host at a gate road by virtue of the signal converter; and the monitoring host is used for adjusting the speed of the coal mining machine according to the working face top plate pressures and the working face gas concentration data.

The present invention relates to a steel checkered plate pressure welding machine. It is formed from pressure welding machine, intermediate feeding roller way and head-cutting machine. Said pressure welding machine can utilize heavy current to make twist steel and flat steel be instantaneously stitched, then the progressively stitched steel checkered plate can be passed through the intermediate feeding roller way and fed into the head-cutting machine, said head-cutting can be used for cutting off the excess twist steel.

The invention discloses a bottom plate pressure relief and reinforcement structure for controlling a floor heave of a deep roadway and a construction method of the bottom plate pressure relief and reinforcement structure. The construction method comprises the following steps: (1) excavation of a roadway and anchor mesh supporting: excavating the deep roadway, and performing the anchor mesh supporting on a surrounding rock after the surrounding rock is formed; and (2) digging of two pressure relief troughs: respectively digging a long-strip-type pressure relief trough in each of the left and right sides of a bottom plate of the roadway through an air pick along the axial direction of the roadway, wherein the cross section of each pressure relief trough is rectangular, and the pressure relief troughs take a boundary line of one side end as a symmetric line. In conclusion, a bottom plate pressure relief method is used for controlling the problems of the floor heave of the deep roadway and deformation of the surrounding rock; and on the basis of a deep roadway anchor and injection supporting technology at the present, the pressure relief effect on the surrounding rocks on the bottom plate, two ends and a top plate is improved by reasonably determining the shape, the size and the arrangement position of each pressure relief trough, the number of secondary interstices in the surrounding rocks is increased, the grouting effect on the surrounding rocks is enhanced, the problem of the floor heave of the deep roadway can be effectively controlled, and long-term stability of the surrounding rock of the deep roadway is guaranteed.

A spiral plate pressure water storage tank is characterized in that an inner container of a pressure water tank is set as a cylinder body, a deflector is spirally arranged by surrounding a shaft line of the cylinder body, a cold water port is formed on the side wall of the bottom part of the inner container of pressure water tank and positioned in a bottom layer of the deflector, a hot water port is formed on the side wall of the top part of the inner container of the pressure water tank and positioned in a top layer of the deflector, and a spiral water flow channel is formed along the deflector between the cold water port and the hot water port. The spiral plate pressure water storage tank can not only retain the advantages on the water supply pressure aspect of the pressure water tank, but also effectively improve the hot water efficiency, simultaneously simplify the structure, reduce the cost and miniaturize the water tank.

The invention relates to the basic research and engineering application research of the pressure theory of bulk materials, and provides a test method and device for measuring the pressure distribution of bulk materials in the silo, aiming at ascertaining the relationship between the pressure field at the bottom of the silo and the frictional resistance of the side wall The distribution law provides key technologies and methods for testing the pressure theory of bulk materials and the design load of silo storage materials. The core of the device lies in the design of the micro-slit separation of the test model chamber and the automatic collection and analysis of the pressure on each separation body. The bottom of the warehouse is separated from the wall, which can measure the pressure of the bottom plate of the warehouse and the side resistance of the wall of the warehouse respectively; the bottom plate is divided into several concentric discs, which can measure the distribution of the pressure at the bottom of the warehouse; Control the lifting of the bottom plate, and measure the normal pressure and frictional resistance of the material against any elevation of the warehouse wall; the automatic data collection and analysis system realizes human-computer interaction and is easy to operate. Through the test scheme design and calculation analysis, the vertical stress distribution of the horizontal section storage material at any elevation can be obtained.