1053 results about "Vertical motion" patented technology

The invention relates to the technical field of belt conveyor dynamic characteristic research, in particular to a trailer type belt conveyor dynamic characteristic simulation method, which comprises the following steps: respectively carrying out stress analysis on a trailer frame, each wheel and a conveying belt unit in a trailer unit, and sorting the degree of freedom; establishing an overall coordinate system, a vehicle body coordinate system, a contact coordinate system and a conversion relation; respectively establishing kinetic equations of the wheel pair and the vehicle supporting frame; kinetic parameters of the trailer unit are determined; according to the Hamiltonian principle, a vehicle supporting frame vertical motion equation and a vehicle supporting frame nodding motion equation are established, and then a linear second-order differential equation of a vehicle supporting unit is obtained; and compiling a calculation program by using numerical calculation software, and simulating the wheel-rail vibration characteristics of the trailer unit in the straight-line-segment advancing process. On the basis of the multi-degree-of-freedom multi-body dynamics theory, a trailer type belt conveyor system nonlinear dynamics equation is constructed, and a wheel pair, a trailer frame and a six-degree-of-freedom motion equation for coupling the wheel pair and the trailer frame are analyzed.

The invention belongs to the technical field of sealing ring assembling equipment, and particularly relates to sealing ring assembling equipment of a high-voltage connector, which comprises a shell, an opening assembly used for opening a sealing ring is arranged in the shell, and a protection assembly used for preventing the sealing ring from bouncing off is arranged above the shell. A driving plate is arranged above the hydraulic lifter, one end of the sliding plate is slidably connected with an opening block in a clamped mode, the driving plate drives the opening block to move horizontally and vertically at the same time, the hydraulic lifter is driven by the moving plate to move, and the hydraulic lifter drives the opening block through the driving plate to open a sealing ring. According to the high-pressure connector sealing ring mounting device, the sealing ring can be quickly mounted on a high-pressure connector after being opened, the conditions such as bouncing at the moment when the sealing ring is separated from the opening block can be effectively prevented through the design of the opening block and the baffle, and the mounting efficiency and quality of the high-pressure connector sealing ring can be effectively improved.

A molten salt nuclear reactor includes a vessel and a control blade assembly disposed within the vessel. The control blade assembly includes a drive rod and a control blade. The drive rod further includes an oblique surface wherein vertical motion of the drive rod and its oblique surface causes horizontal motion of the control blade into and out of a reactor section of the molten salt reactor.

The invention discloses a server cabinet with a lifting device, and relates to the technical field of server cabinet equipment.The server cabinet comprises a cabinet body, a bracket capable of moving vertically and a lifting mechanism driving the bracket to move vertically are arranged in the cabinet body, the lifting mechanism comprises a first guide rail, the first guide rail is vertically installed in the cabinet body, and the first guide rail is connected with the lifting mechanism. First sliding blocks are slidably connected to the first guide rails, first supporting plates are fixedly connected to the side faces of the first sliding blocks, a bracket is installed between the two first supporting plates, four slings distributed in a matrix mode are arranged in the cabinet body, a winding mechanism is installed at the top of the cabinet body, and the bottom ends of the slings are fixedly connected to the first supporting plates. Four high-strength aluminum alloy first guide rails (two left and right) in the lifting mechanism are designed to be matched with a sliding block and a supporting plate, it is ensured that the bracket vertically moves stably, inclination is prevented, a carbon fiber sling and a rigid guide rail act synergistically, the load is shared, the single-point failure risk is prevented, and safety is improved.

The invention discloses a 15-degree-of-freedom whole vehicle dynamics modeling method for a steer-by-wire system, and the method comprises the steps: dividing a whole vehicle model into six dynamics modules: a vehicle body model, a nonlinear tire model, a suspension model, a wheel motion model, a motor model, and a steer-by-wire model; in addition, a tire slip angle and slip rate state quantity calculation module and a steer-by-wire control module are adopted, a whole vehicle dynamic model is established and comprises six degrees of freedom of longitudinal, lateral, yawing, pitching, tilting and vertical movement of a vehicle body, two degrees of freedom of rotation and vertical movement of four distributed wheels and one degree of freedom of vehicle steering, and the total number of the degrees of freedom is 15. The method designed by the invention is suitable for common vehicle driving conditions so as to research the control performance, the stability, the safety, the dynamic response and the characteristics of a steer-by-wire system of the vehicle and vehicle performance under different working conditions, and theoretical support is provided for optimization of future vehicle design and control strategies.

The embodiment of the invention relates to the technical field of ocean energy utilization, in particular to an ocean power generation device and method. The water immersion stand column is used for supporting the wind power generation component; the wave energy power generation component is arranged on the water immersion stand column and can move up and down along the water immersion stand column; and the culture net cage is arranged on the edge of the wave energy power generation component and can move along the edge. According to the ocean power generation device, the wave energy power generation component can generate power through vertical movement of the wave energy power generation component, pitching and yawing of the wind energy power generation component are relieved while complementation of wind energy and wave energy is achieved, and the power generation efficiency and the power generation stability are comprehensively improved. The balance weight of the aquaculture net cage can reduce the gravity center of the wind power generation component and improve the storm resistance of the ocean power generation device. The immersed stand column is not only a wind power generation component foundation, but also a kinetic energy transmission medium for wave power generation, and meanwhile provides an anchoring point for the aquaculture net cage, so that three purposes are achieved through one column.

The invention relates to a reusable rocket landing section fuel optimal conversion time sequence online generation method and device and a medium, and the method mainly comprises the steps: simplifying the complex three-dimensional motion of a rocket vertical landing section into a one-dimensional vertical motion model; establishing a nonlinear equation set which takes the working time of the engine before and after stage conversion as an unknown quantity and enables the rocket to meet the terminal speed and terminal position constraints and the fuel consumption to be optimal; constructing and solving an approximate analytical solution as an initial value of Newton iteration; and based on the obtained initial value, carrying out iterative solution on a double-constraint nonlinear equation set formed by rocket speed and displacement terminal constraint. According to the method, a form based on analytic iteration is adopted, the fuel optimal control in the rocket landing process is realized through real-time online calculation of an engine conversion time sequence and giving of a corresponding thrust adjustment control instruction, and safe and accurate landing is ensured.

The invention relates to hydraulic pump return plate machining equipment, and belongs to the technical field of machining. The equipment aims to solve the problems that in the prior art, a return plate is prone to deformation during machining, and grinding precision is insufficient. The equipment comprises a rack, a limiting unit, a lifting mechanism and a grinding mechanism. Wherein the limiting unit is matched with the limiting groove through a clamping assembly to limit horizontal and vertical movement of the blank piece; the grinding mechanism comprises a plurality of grinding execution units rotating synchronously, and precise machining of an inner cavity of the blank is achieved through a rotary grinding assembly. A positioning adjusting module of the clamping assembly is provided with an avoiding structure and can be matched with a to-be-machined hole site of the blank. The grinding execution unit adopts a reverse rotation design, so that the machining efficiency and precision are improved; in addition, the vertical movement of the grinding mechanism is accurately controlled through the lifting mechanism, and the equipment is suitable for machining blanks with different heights; the method has the advantages of high machining precision, wide application range, convenience in operation and the like.

The invention provides an intelligent storage roadway stacking machine, and relates to the technical field of roadway stacking machines, the intelligent storage roadway stacking machine comprises a vertical sliding rod and a taking and placing assembly, the taking and placing assembly comprises a supporting frame slidably connected to the vertical sliding rod, one end of the supporting frame is fixedly connected with a transverse rod, and the two ends of the interior of the transverse rod are slidably connected with limiting sliding rods; a concave block is fixedly connected to the inner side of the limiting sliding rod, a straight rack is fixedly connected to the outer side of the concave block, a first supporting plate is fixedly connected to the interior of the straight rack, a torsion shaft is fixedly connected to the interior of the first supporting plate, auxiliary clamping blocks are rotationally connected to the two ends of the torsion shaft, and a supporting assembly is fixedly connected to the outer side of the taking and placing assembly. According to the triangular supporting structure, the geometric stability principle is utilized, loads in the vertical direction are evenly dispersed to all supporting points, deformation or shaking caused by single-point stress is reduced, transverse deviation of the supporting frame in the moving process is limited, and the strict vertical movement track of the supporting frame along the vertical sliding rod is ensured.

The invention relates to the technical field of stress detection equipment, and discloses building steel structural member stress detection equipment which comprises a base, an adjusting ring is fixedly arranged on the base, and a first detection piece for detecting stress at the two ends of a steel structural member is arranged on the adjusting ring; the adjusting ring is provided with a second inspection part for detecting the stress of the middle section of the steel structural part, and the adjusting ring is provided with a pushing part for enabling the steel structural part to move; the J-shaped connecting groove is matched with the pulley, non-impact conversion from horizontal movement to vertical movement is achieved, jumping generated during lifting of the placing piece is avoided, the size design of the avoiding groove provides an independent movement space for the first sensor, the movement interference risk is thoroughly eliminated, sliding friction is converted into rolling friction through bearing matching of the pulley and the rotating shaft, and the stability of the sensor is improved. And through the symmetrical layout of the connecting grooves, the stress on the two sides of the placing piece is balanced, side inclination during lifting is avoided, and it is ensured that the posture of the steel structural piece is stable.

A cross cut device shears a web twice during a pause phase of an intermittent feed cycle. The cross cut device includes a cutter pair including an upper blade and a lower blade, a vertical movement device for reciprocating the upper blade with respect to the lower blade to shear the web, and a horizontal movement device for horizontally moving the cutter pair between a first position and a second position spaced upstream of the first position. During the reciprocation of the upper blade for the second shearing, the horizontal movement device starts to move the cutter pair from the second position to the first position after the upper blade reaches a lowermost height and before the upper blade exceeds a shear height. The feed device starts to feed the web after the cutter pair starts to move from the second position to the first position.

The present invention provides a riveting tooling for a planetary gear shaft, belonging to the field of planet carrier processing. The present invention includes a tooling body and a planet carrier placing base arranged above the tooling body. The planet carrier placing base can move vertically relative to the tooling body. The planet carrier placing base is further provided with a riveting hole corresponding to the position of the riveting position of the planetary gear shaft. A first punch is arranged on the tooling body below the riveting hole. The riveting tooling for the planetary gear shaft further includes a press for driving the planet carrier placing base to move vertically downward. A second punch corresponding to the first punch is arranged below the press. The first punch and the second punch cooperate to complete riveting. The beneficial effects of the present invention are: simple operation, simple structure and low cost.

A gripper includes a finger module coupled to one side of a palm module, the palm module including a first power unit including a first rotary shaft and configured to rotate the first rotary shaft, a screw member configured to rotate in conjunction with a rotation of the first rotary shaft, a nut member coupled to the screw member, a first member coupled to the nut member and movable in a vertical direction in conjunction with a vertical motion of the nut member, the first member having a groove extending in one direction and having a recessed shape, and a connection member having a first side coupled to the finger module and a second side inserted into the groove, wherein the connection member is movable away from or toward the screw member by restriction between the connection member and an inner surface of the groove.

The invention discloses a built-in backup protection tripping device of a circuit breaker, and belongs to the technical field of circuit breakers. Comprising a magnetic steel unit group and an actuating mechanism, the magnetic steel unit group is composed of a fixed first magnetic steel group and a slidable second magnetic steel group, and an induced current is generated when the magnetic steel unit group is electrified to drive the second magnetic steel group to move transversely; the action mechanism comprises a push plate, a push plate spring, an inclined plane guide block and a push rod, when short circuit occurs, the electromagnetic driving force overcomes the spring force and drives the push plate to move transversely, the transverse movement of the push plate is converted into the vertical movement of the push rod through the inclined plane guide block, and a tripping rod of the circuit breaker is pushed to rotate to realize tripping. According to the device, a non-excitation type and passive response type backup tripping mechanism is constructed by innovatively adopting an induction magnetic steel group and an inclined plane motion conversion mechanism, the technical defect of protection failure caused by electromagnetic interference of a traditional electromagnetic tripping device is fundamentally overcome, and the device is particularly suitable for the application field with extremely high requirements on safety and stability.

The invention relates to a crane trolley assembly (604′,604″,604″′) comprising: —a crane trolley (603a,603b,603c,603d,603e,603f) configured for guided movement along a beam (601,602) of a crane (600); —a lifting frame (504) configured for connection to a storage container (106) to lift the storage container (106) from above through a first vertical movement range (R1) and a second vertical movement range (R2) of the lifting frame (504); —a plurality of lifting members (505) suspending the lifting frame (504) below the crane trolley (603a,603b,603c,603d,603e,603f) for lifting and lowering the lifting frame (504) through at least the second vertical movement range (R2); and —a stabilizer (620′,620″,620″′) extending below the crane trolley (603a,603b,603c,603d,603e, 603f); wherein a lower end (620L′,620L″,620L″′) of the stabilizer (620′,620″,620″′) is configured to interact with the lifting frame (504) in order to stabilize the lifting frame (504) during the first vertical movement range (R1) of the lifting frame (504), and wherein the stabilizer (620′,620″,620″′) and the lifting frame (504) are configured to move vertically relative each other when in the second vertical movement range (R2) of the lifting frame (504). The invention further relates to an associated automated storage and retrieval system and methods of transferring a storage container.

The invention discloses a sound-absorbing plasterboard positioning and punching processing machine and a processing method, and relates to the technical field of plasterboard processing. The sound-absorbing plasterboard positioning and punching machining machine comprises a workbench, a supporting frame and supporting legs, the supporting frame is fixed to the top of the workbench, first driving devices are fixedly connected to the two sides of the inner wall of the supporting frame, and fixers for fixing plasterboards are arranged at the movable ends of the first driving devices; the top of the inner wall of the supporting frame is provided with a first connecting block which moves and slides in the second direction, the bottom of the first connecting block is fixedly connected with a mounting base, the top of the mounting base is fixedly connected with a second connecting block, and the top of the supporting frame is provided with a second driving device for driving the second connecting block to move. And a first lifting device and a second lifting device are arranged at the bottom of the mounting base, the first lifting device drives the drilling motor to move vertically, the second lifting device drives the piezoelectric spray head to move vertically, the problem that the periphery of a hole is prone to damage in the existing drilling process is solved, and the sound absorption effect is improved.

A method for controlling a traction control system, ABS and actively controlled suspension. The method includes receiving an sensor output from at least one suspension sensor at a controller. The sensor output is indicative of a vertical height of the suspension relative to a road. The method determines an amplitude of vertical motion of the suspension over time using the received sensor output. The method identifies peaks and valleys in the amplitude of vertical motion of the suspension over time. The method determines that a rough road condition is present in response to a number of peaks and valleys exceeding a predefined threshold amplitude occurring more often than a predefined threshold frequency. An active suspension control of at least one wheel system of a vehicle is adapted in response to determining that a rough road condition is present.

The utility model discloses a vertical motion device and a semiconductor device, the vertical motion device comprises a lifting mechanism, the lifting mechanism is provided with a bottom plate, a first wedge block and a second wedge block, the first wedge block is in sliding connection with the bottom plate, and the first wedge block is in sliding connection with the second wedge block; the first wedge block comprises a first surface, the first surface is obliquely arranged, the second wedge block is provided with a second surface, and the second surface is parallel to the first surface; and the driving mechanism is mounted on the bottom plate and is in driving connection with the first wedge block. The structure of the device is flat and compact in the vertical direction, two wedge blocks are adopted for cooperation, the device is stable in place, loads can be driven with small force, the structure height of the device in the vertical space is minimized, a micropositioner or a wafer jacking table can be directly stacked, macro-micro combined movement is achieved, and modular integration is facilitated. By arranging the measuring mechanism, the position of the second wedge block can be accurately measured, the measuring result is fed back to the driving mechanism, the driving mechanism is opened and closed according to the measuring result, closed-loop control is achieved, and the movement precision of the lifting mechanism is guaranteed.

The invention relates to the technical field of vehicle electric control suspensions, in particular to a chassis prediction control system and method based on binocular vision and multi-domain cooperation, and constructs the chassis prediction control system based on binocular vision and multi-domain cooperation based on an ADAS binocular camera. IMU data of a binocular camera is obtained by using a data acquisition module of the chassis prediction control system, visual observation data of a vehicle body is obtained by using a binocular visual processing module, and then the IMU data and the visual observation data are fused and converted into a three-dimensional image by using modules such as an extended Kalman filtering fusion module and a motion conversion module. The sprung mass vertical acceleration and sprung mass vertical speed of the vehicle four-corner suspension provide accurate suspension four-corner vertical motion state input for an electric control suspension controller, and the accuracy and real-time performance of the electric control suspension for vehicle body posture control are guaranteed. Meanwhile, the problems that a special IMU is difficult to arrange, high in cost and insufficient in precision and IMU resources of an ADAS system are wasted are solved.

The utility model is applicable to the technical field of riveting machines, and provides a high-efficiency terminal riveting machine, which comprises a machine body and a workbench, and further comprises a pressing mechanism and a feeding mechanism, the bottom of the pressing mechanism is connected with a riveting block, an upper cutter is fixed at the bottom of the riveting block and is matched with a lower cutter fixed on the machine body, a servo motor is arranged in the pressing mechanism, and the servo motor is connected with the workbench. And the feeding mechanism vertically moves along with the riveting block in a reciprocating manner. According to the efficient terminal riveting machine, the pressing mechanism can complete intermittent riveting of a wire rod and a terminal through the upper cutter and the lower cutter, the motor in the pressing mechanism is the servo motor, and compared with an asynchronous three-phase motor in an existing riveting machine, the rotating speed of the servo motor can be freely adjusted in the riveting acceleration and deceleration stages, so that the efficiency of the riveting machine is greatly improved. Therefore, the riveting efficiency of the riveting machine is improved, the riveting time is shortened, the feeding mechanism can intermittently and continuously convey the terminals to the matching position of the upper cutter and the lower cutter, and the riveting efficiency of the riveting machine is further improved.

The invention relates to the technical field of stop valve assembly, in particular to an automatic assembly system of a stop valve and a working method of the automatic assembly system, and the system comprises a workbench, and a first feeding device, a second feeding device and a pressing device which are arranged on the workbench. During working, the pressing device rotates through the first linkage piece to drive the push rod to horizontally push the side flow pipe to the position of the mounting hole, and the vertical sliding piece is linked to jack the passive pin to trigger the pressure cone to perform downward pressing action, so that the side flow pipe is pressed into the main flow pipe. Then, when the welding device transfers the assembly to the rotating seat through the clamping cylinder, the second linkage piece converts the horizontal displacement of the movable seat into the vertical movement of the lifting seat, so that the side flow pipe located on the rotating seat is automatically pressed and fixed by the positioning cone of the lifting seat, and then the rotating seat drives the assembly to rotate; and the seam girth welding of the main flow pipe and the side flow pipe is completed by cooperating with a welding gun. According to the whole system, the production efficiency is effectively improved by achieving full-process automation of pipe fitting feeding, pipe fitting assembling and pre-fixing and welding forming.

Implementations disclosed herein are directed to a curved spreader disk for spreading a granular material. In some implementations, the curved spreader disc may include: a concave curved disk with a plurality of fins radiating outward from a center of the curved disk. Each of the fins may includes a substantially straight inner area near to the center of the curved disk for catching granular material and a curved outer area to accelerate movement of the granular material. The substantially straight inner area may transition the granular material from a vertical movement to a horizontal movement.

The invention discloses a fault compensation and H-infinity fault-tolerant tracking control method for an autonomous underwater vehicle, and belongs to the technical field of engineering control methods. Comprising the following steps: S1, aiming at actuator faults, sensor faults and external disturbance problems in vertical plane motion of an autonomous underwater vehicle, introducing a depth variable and establishing a high-order all-drive fault model; s2, designing an intermediate estimator based on a high-order all-drive model, and realizing estimation of a system state and a fault; and S3, designing a controller based on the high-order all-drive model, solving a game Riccati equation by using a Minmax method, obtaining an optimal control strategy, and realizing fault compensation and external disturbance suppression. The effectiveness of the method and the excellent tracking control effect of the designed controller are verified through a depth control simulation experiment of the autonomous underwater vehicle.

The invention provides a floating type wind energy-wave energy generator set. The floating type wind energy-wave energy generator set comprises a floating wind power platform and a wave energy power generation assembly. The floating wind power platform comprises a fan tower barrel and a stand column. The wave energy power generation assembly comprises an oscillation floating body, a telescopic piece and a wave energy power generator. The oscillating floating body is slidably arranged on the stand column in a sleeving mode so that the oscillating floating body can freely slide in the axial direction of the stand column along with wave movement. And the wave energy generator is fixedly mounted in the fan tower. One end of the telescopic piece is hinged to the connecting lug plate on the upper portion of the oscillating floating body through a hinge structure, and the other end is in driving connection with the wave energy generator. When the oscillation floating body generates heaving motion under the action of waves, the telescopic motion of the telescopic piece drives the wave energy generator to work, and then conversion from wave energy to electric energy is achieved. The wave energy power generation assembly and the wind generating set share the same supporting structure, and structural integration and function combination are achieved.

A bolt catch assembly for a firearm lower receiver having a symmetrical and ambidextrous finger pad in an ergonomic location at the front of the trigger-well which operates the catch and release function of the bolt catch. The finger pad moves in a vertical motion; up to catch the bolt, and down to release the bolt. It may be operated from the left or the right finger pad by a left-hand finger or a right-hand finger. The finger pad is affixed to a vertical link which has a tooth at its top end which engages a groove on the edge of the bolt catch to make the bolt catch pivot. The vertical link includes an elongated slot that accommodates a magazine release shaft.

The invention relates to the technical field of cigarette case paperboard appearance detection, in particular to laser scanning type cigarette case paperboard blank accurate defect detection equipment which comprises a central control machine base, a controller unit is arranged on the side portion of the central control machine base, the controller unit of the central control machine base is connected with electric power components through wires, and a bearing plate is fixed to the central area of the upper portion of the central control machine base. The conveying roller sets are symmetrically installed at the input end and the output end of the center control machine base. Through cooperative configuration of a laser detector array and a thickness detection mechanism, surface microdefects and thickness abnormity are synchronously detected, the problem that traditional step-by-step detection is low in efficiency is solved, and speed measurement is improved; an elastic positioning system is formed by the moving frame and the first spring and is matched with differential operation of the conveying roller set, self-adaptive clamping of the surface of the blank is achieved, constant clamping force is kept, and the defect of creases caused by rigid clamping is avoided; the telescopic rod of the first electric push rod drives the first marking pen to move vertically, and the positioning precision can be improved by combining real-time data of a dynamic feedback sensor of the thickness detection mechanism.

A meal table assembly including a frame assembly defining an interior space, a meal table movably coupled to the frame assembly, and a lift mechanism configured to move the meal table between a stowed position in the interior space and a deployed position outside of the interior space. In embodiments, the meal table and the frame assembly interact via a cam assembly configured to coordinate vertical motion and rotation of the meal table relative to the frame assembly. In embodiments, the meal table assembly is part of a console assembly which may be part of a seating configuration, for instance a first or business class seating configuration.

The invention provides an autonomous sinking and floating type deep-sea mining mineral lifting device which comprises a body, an ore storage bin device, a buoyancy control device and an electric power device, seawater is used as a buoyancy adjusting medium, the weight and buoyancy of a system are adjusted by injecting and discharging seawater in a pressure bin, and vertical movement of a vertical deep-sea mineral product carrying system is achieved. And meanwhile, an underwater parallel power propulsion system and a deep sea positioning system are arranged, so that an efficient and stable deep sea mining transportation system is formed. Deep sea bottom mineral products can be carried, free shuttling between the sea bottom and the sea surface is achieved, and therefore sea bottom mineral product recycling is achieved. Compared with a current deep-sea mining lifting system, the cost is greatly reduced, the system stability is improved, compared with a pump lifting mode in a traditional deep-sea mining scheme, moving parts such as a super-large pump machine and a deep-sea mineral product lifting pipeline are not needed, the complexity of the system is reduced, and the stability of the system is improved.

The invention discloses a vertical motion integration device and semiconductor equipment, and the device comprises a macro motion lifting mechanism which comprises a bottom plate, a first wedge-shaped part, a second wedge-shaped part and a first driving part, and the first driving part is used for driving the first wedge-shaped part to move so as to enable the second wedge-shaped part to make vertical macro motion; the micro-motion mechanism comprises a second driving piece, an elastic piece and a carrying table, and the second driving piece is used for driving the carrying table to do vertical micro-motion; and the jacking mechanism comprises a third driving piece and jacking pieces, and the third driving piece is used for driving the jacking pieces to do vertical movement so as to jack the to-be-tested object borne by the carrying table. Macro-micro adjustment and jacking motion are integrated, millimeter-level macro adjustment, nanometer-level micro adjustment and wafer jacking motion of the wafer carrying table can be achieved, the three motions are independently controlled and do not interfere with one another, the overall structure is flat and compact, small vertical height is achieved, arrangement in a vacuum cavity is facilitated, rigidity is high, in-place stability is achieved, and the wafer carrying table is suitable for large-scale production. And electromagnetic interference can be resisted.

The invention discloses an air pressure drainage dredger and a dredging method, the air pressure drainage dredger comprises a dredger body, the middle part of which is provided with a through hole; the dredging device is arranged at the through hole; the vertical movement mechanism is mounted on the ship body and used for driving the dredging device to move in the vertical direction; the desilting device comprises a mud taking part which comprises a drainage cover, a soil retaining plate and a mud taking mechanism; the drainage cover is of a columnar structure with a sealed top and an open lower part, and the mud taking mechanism is arranged in the drainage cover; the sludge conveying part is used for conveying the sludge excavated by the sludge taking part to the sludge discharging part; and the sludge discharging part is used for receiving and discharging the conveyed sludge. Dry excavation of lake and reservoir sludge is achieved through air pressure drainage, and the problems that existing dredging equipment is complex in aftertreatment process, large in energy consumption and large in pollution are solved.