70results about How to "Avoid shock and vibration" patented technology

The invention provides a composite load reduction device for high-speed water entry of an aircraft body. The composite load reduction device comprises a fairing detachably connected to the head of a main projectile body, a cavitator and a damping device, wherein the cavitator and the damping device are arranged in the fairing; the damping device is arranged in the fairing and located between the cavitator and the main projectile body; and the damping device comprises a sealing pressure cylinder, a piston, a mounting seat, a piston rod, a tension spring, an air cavity and buffer air. The composite load reduction device is a buffer vibration reduction device which utilizes the pneumatic damping device and buffer foam for load reduction at the same time. Meanwhile, the pneumatic damping device and the buffer foam are utilized for buffering, and the composite load reduction device has higher load reduction performance.

The invention provides a pneumatic damping type load reducing device for large-angle inclined underwater entry of a navigation body. The pneumatic damping type load reducing device comprises a fairingwhich is mounted at the head of a main projectile body and is detachably connected with the head of the main projectile body, wherein a cavitator is arranged in the main projectile body; a pneumaticdamping device which is superposed with the axis of the fairing is arranged between the cavitator and the main projectile body; and a plurality of side hydraulic dampers are arranged between the pneumatic damping device and the inner wall of the fairing. At the moment that the main projectile body falls from high altitude and touches water, the fairing is disintegrated and broken due to impact load, and absorbs part of energy, and fragments are separated from the device. The pneumatic damping device mainly absorbs front normal impact energy from a water surface, and the side hydraulic damperscan absorb most of impact energy of the water surface on the side surface of the fairing, so that the pneumatic damping type load reducing device is especially suitable for an underwater entry workingcondition that the navigation body has a large inclination angle and an attack angle posture.

The invention relates to a flexible swing gate, which comprises a door spindle and door leaf assembly, a gate support assembly and a motor inspection and control assembly, wherein the door spindle and door leaf assembly comprises a door spindle assembly which is rotationally connected with the gate support assembly, and a door leaf assembly fixed on the door spindle assembly; the motor inspection and control assembly comprises a servo motor, a speed reducer which is connected with the servo motor, a servo controller which is connected with the servo motor, and an angle sensor which is arranged on the door spindle assembly; and an output shaft of the speed reducer is connected with the door spindle assembly. In the flexible swing gate, the servo motor, the servo controller and the angle sensor are adopted for driving and controlling, so that the running speeds and positions of a door spindle and a door leaf can be controlled effectively, the moving speed change of the door leaf can be controlled in a shorter period of time, impact vibration caused by sudden change of speed is avoided, the moving flexibility is realized, and the use safety and comfort of equipment are improved.

The invention relates to a magneto-rheological pump type variable-damping shock absorber suitable for various vehicle suspension systems. The shock absorber is provided with an outer cylinder barrel with packaged upper and lower sides, wherein a hydraulic working cylinder is arranged in the outer cylinder barrel; the working cylinder is internally provided with a piston with a circulating hole, a piston rod connected to the piston and a stopper; the lower port of the working cylinder is connected to a bottom valve seat; a guider and an oil seal base connected to the guider are connected to the upper port of the working cylinder; the guider is internally provided with one or more electromagnetic coils; a magneto-rheological liquid flow guide hood is arranged between the working cylinder and the outer barrel wall; a gap between the outer wall of the flow guide hood and the inner wall of the outer cylinder barrel forms an annular return oil channel; and a damping one-way valve is respectively arranged at the liquid flow channel openings of both the bottom valve seat and the piston. The shock absorber is internally filled with a magneto-rheological liquid, so that the yield stress of the shock absorber increases monotonically along with the enhancement of the magnetic field; due to the damping characteristic of the shock absorber, the shocker absorber can adapt to the needs of vibration damping performances of various road surface conditions through the adjustment of the intensity of the current in the coils, and particularly, can avoid impact of large-amplitude and strong vibration of a car on a rugged road. The magneto-rheological pump type variable-damping shock absorber has the advantages of a rational design, a simple structure, strong working reliability, good damping effects and long service life.

The invention relates to the technical field of enterprise management, and discloses an outdoor enterprise display board with a self-protection function. The board comprises a base, wherein the upperend of the base is fixedly connected with a support column, the middle part of the support column is slidably sleeved with a connecting disc, and the upper part of the connecting disc is fixedly connected with a display plate; and an inner cavity of the display plate is rotationally connected with a rotating pipe sleeving the support column, a curved groove is formed in the side wall of an inner cavity of the rotating pipe, the outer side of the bottom of the rotating pipe is movably sleeved with a torsion spring extending to the connecting disc, and the top of the inner cavity of the rotatingpipe is fixedly connected with a blocking block. According to the outdoor enterprise display board with the self-protection function, an abutting rod rationally drives the rotating pipe part to rotate through centrifugal force, an air bag column is arranged in the inner cavity of the rotating pipe in a matched mode so that the reset process of the rotating pipe can be buffered, the stability of the display board in normal use is guaranteed, and the display board is prevented from being shocked and impacted after self-protection is removed.

The invention belongs to the technical field of tunnel engineering, and particularly discloses a tunneling device and method adopting laser cutting for rock breaking. The tunneling device comprises aself-travelling mechanism, a connecting mechanism and a cutting mechanism; the self-travelling mechanism is used for achieving moving of the whole tunneling device; the connecting mechanism comprisesa main driving shaft, a swing arm and an auxiliary driving shaft which are connected sequentially; the cutting mechanism comprises a laser cutterhead mounted on the auxiliary driving shaft and a plurality of laser cutting heads which are mounted on the laser cutterhead and arranged in a crossed mode in the horizontal direction and the vertical direction; and a distance sensor is further mounted onthe laser cutterhead to detect the distance between the laser cutterhead and a to-be-cut rock layer. The tunneling method adopts the tunneling device to break rock so as to achieve tunneling. The loss of a cutter is avoided, cutter replacing is not needed, and the cutting efficiency is high.

The invention relates to a closed focal plane box of a space camera. The closed focal plane box comprises a front panel, a sealing pressing ring, a connecting cylinder and a rear panel, wherein one end of the front panel is hermetically connected with a lens flange, the sealing pressing ring is in close fit with periphery of the other end of the front panel, one end of the connecting cylinder is fixedly connected with the sealing pressing ring and contacted with the front panel, and the other end of the connecting cylinder is fixedly connected with the rear panel; a focal panel circuit board is arranged in a front cavity, a plurality of connecting bolt groups are orderly arranged in the cavity, the connecting bolt group close to the sealing pressing ring is used for fixedly pressing the focal panel circuit board on the front panel, a circuit board is fixed between two connecting bolt groups, and a rear end of the connecting bolt group close to the rear panel is fixed on the rear panel. For solving the technical problems that the impurities such as dust and the like can easily enter the existing focal panel box and the exiting focal panel box is heavy, the closed focal panel box disclosed by the invention is highly lightened, and meanwhile, the impurity pollution problem of the traditional camera focal plane CCD / CMOS is effectively solved through the structure.

The invention discloses a fabricated type building main body protection device, and relates to the technical field of building engineering machinery. The protection device comprises a supporting seat, the supporting seat is provided with a height adjusting mechanism used for driving a protection frame to vertically lift, and a transmission frame is provided with a lifting adjusting mechanism used for driving a bottom supporting plate to slide relative to the protection frame. According to the device, a building assembly placed on the bottom supporting plate can be clamped and fixed through an arranged transverse limiting mechanism, the stability of the assembly in the mounting process is guaranteed, and butt joint mounting is facilitated; the arranged lifting adjusting mechanism can adjust the vertical height of clamping plates on the opposite sides of the bottom supporting plate, and thus reasonable adaptive adjustment is achieved according to height parameters of the assembly, and effective supporting and protection in the assembly mounting process are guaranteed; and an arranged anti-falling mechanism can achieve the effective buffering and protecting effect when the assembly falls accidentally, large impact vibration is avoided, and the protecting effect in the assembly mounting process is greatly improved.

The invention relates to a disc type high-capacity servo tool magazine. The disc type high-capacity servo tool magazine comprises a servo motor, a speed reducer, a bearing pedestal, a tool disc, a tool magazine cover and a tool magazine support. An output shaft of the servo motor is connected with the input end of the speed reducer. The output end of the speed reducer is concentrically connected with an inner hole in a flange shaft in a matched manner. The flange shaft penetrates the bearing pedestal to be fixedly connected with the tool disc. The bearing pedestal is fixedly connected with the tool magazine support. One end of the bearing pedestal is connected with the speed reducer through a flange plate. Two disc bearings are mounted in the bearing pedestal. A tool magazine cap is mounted on the outer portion of the tool disc. The tool magazine cover is fixed to the tool magazine cap through a rotary air cylinder. 24 tool forks are evenly distributed on the peripheral surface of the tool disc. The mounting faces of the tool forks are parallel to the rotary center line of the tool disc. The tool magazine is high in capacity, fast and accurate in locating, compact in structure and small in occupied space, transmission is stable and free of impacts, the use requirement generated when the requirement for the number of tools is high can be met, and the tool magazine can be mounted on a numerical control machine tool conveniently.

The invention discloses a mooring connector, which comprises a lower hinge, a force-bearing mechanism and a mooring cable, wherein one end of the lower hinge is connected to an aerostat, and the other end is connected to a force-bearing mechanism, and the force-bearing mechanism is used to fix the mooring The non-metallic reinforcing fiber in the cable is integrated with the mooring cable; the mooring cable has at least one layer of non-metallic reinforcing fiber, and the outer shell of the load-bearing mechanism is placed in a one-to-one correspondence with the non-metallic reinforcing fiber layer of the mooring cable. At least one layer of locator, each layer of non-metallic reinforcing fiber is divided into several bundles, each bundle of non-metallic reinforcing fiber is placed in a positioning slot in the corresponding locator, and the free end of each bundle of non-metallic reinforcing fiber is installed There are tension counterweights, and the locators with non-metallic reinforcing fiber layers are nested together in sequence according to the diameter. The mooring connector of the present invention can greatly improve the working breaking force index on the premise of small weight, and can guide the mass production of large-tonnage mooring connectors.

The invention belongs to concrete pouring vibrating device and particularly relates to a pre-tensioning method prestressed concrete track board production line pouring vibrating system and applicationthereof. The pouring vibrating system comprises a material distribution mechanism, a jacking mechanism, a vibrating mechanism and a control mechanism. The technical problems that in the prior art, the work efficiency is low, the requirements for automatic control and assembly line production cannot be met are effectively solved, and the pouring vibrating system has the advantages that the existing standard requirements are well met, the system structure layout is compact, and automatic control and assembly line production are achieved easily.

The invention provides a rapid erection method for a large-tonnage solid rocket. In a rapid erection stage, flow output by a metering pump (1) simultaneously passes through a flow cut-off valve (3) and a speed control valve (4), then passes through a machine fluid throttling valve (8) and directly enters an erection execution element (10); in an erection speed reduction stage, the flow output by the metering pump (1) to the erection execution element (10) is reduced by reducing the opening degree of a valve port of the machine fluid throttling valve (8) according to an erection angle of a launch canister; and in a slow erection in-place stage, the flow cut-off valve (3) is closed, and the flow output by the metering pump (1) passes through the speed control valve (4) and the machine fluidthrottling valve (8) and enters the erection execution element (10). The invention further discloses a rapid erection device for a large-tonnage solid rocket.

The invention discloses a method for preventing a lifting system from impact and vibration. The method includes: acquiring the weight of articles in a lifting container; acquiring preset lifting system basic parameters; determining a fundamental wave vibration period of a lifting rope while the lifting system starts according to the weight of the articles in the lifting container and the lifting system basic parameters; determining a time varying simulation parameter of acceleration in a lifting process, of the lifting system according to the fundamental wave vibration period and preset lifting system calculation parameters; and lifting the lifting container according to the determined time varying simulation parameter of acceleration. In addition, the invention also discloses a device for preventing impact and vibration of a lifting system.

The invention discloses a straddle type monorail automatic ice and snow removing vehicle. The vehicle comprises a vehicle body, a snow removing mechanism, a steering mechanism and a deicing part, anda storage battery, an industrial personal computer, a GPS positioning device, a heating device and a high-temperature centrifugal fan are arranged in the vehicle body. The steering mechanism comprisestwo bogies which are installed on the front portion and the rear portion below the vehicle body respectively, the snow removing mechanism is installed on the bogies through installation bases, and the deicing part comprises a hot air heating groove installed below the vehicle body and visual sensors installed on the bogies. Self-adaption to the thickness of an ice layer can be achieved, the phenomenon that accumulated snow crosses over the snow removing mechanism to cause secondary snow blowing is prevented, and vibration impact caused by uneven thickness of the ice layer from the track surface is avoided during rapid movement; in the deicing process, hot air at different temperatures can be adopted for deicing according to the real-time ice layer condition, the situation that the rail beam surface cannot be damaged is considered, and in addition, compared with an existing product, the vehicle size is reduced, and cost is reduced.

The invention relates to an automatic non-driven beam-pumping unit balance adjusting device and method. According to the technical scheme, every two fixed bases of screws are fixed to two sides of a crank by using balance blocks, sand storage boxes are symmetrically mounted on the same side of the crank, every two sand storage boxes connected by connecting pipes and electric control valves are setas a group, and multiple sets are installed; a solar energy storage module installed in the sand storage boxes supplies power to a control module and the electric control valves, and the control module determines the circular motion position of the crank through the balance adjustment data provided by a pumping unit motor and a position sensor mounted at the tail end of the crank, controls the opening and closing time of the electric control valves, uses gravity to drive the flow of iron sand and changes the storage position of the iron sand of each set of sand storage boxes to achieve automatic balance adjustment. The automatic non-driven beam-pumping unit balance adjusting device and method can realize the automation and real-time balance adjusting operation of a beam-pumping unit, greatly reduces the labor intensity of workers, improves the working efficiency, improves the balance degree, reduces the peak torque and current, reduces the reactive loss, improves the power factor, andrealize the minimum requirements of energy consumption.

The invention belongs to the technical field of automobile components and provides a post-processing sensor installation structure. A sensor is installed on a post-processor shell, a heat insulation plate is arranged between the sensor and the post-processor shell and comprises a first metal layer, a second metal layer, a heat insulation layer and a reinforcing layer, and the heat insulation layer and the reinforcing layer are arranged between the first metal layer and the second metal layer. The sensor is installed on the post-processor shell, the heat insulation plate is additionally arranged between the sensor and the post-processor shell, a vibration damper is arranged at the joint of the post-processor shell and an automobile frame, the heat insulation plate can play a heat insulation role and also play a vibration damping role, and therefore the sensor is protected against vibration impact of the automobile frame, and the service life of the sensor is prolonged.

The invention discloses a stop mechanism for a transfer gripper in an offset press. The stop mechanism comprises a transfer roller, a transfer arm, a gripper opening and closing mechanism, and a protection mechanism. The gripper opening and closing mechanism comprises a driving gear, a gripper opening and closing control cam, a pair of driving swing bars, and a swing bar cam, wherein the driving gear and the gripper opening and closing control cam are fixedly mounted on a drive side shaft end of the transfer roller, one end of each driving swing bar is fixedly mounted on a swing bar shaft and the swing bar cam is mounted on a camshaft. The protection mechanism comprises a stop cylinder mounted on the inner side of a transmission side wallboard, a V-shaped swing bar, a stop link and a stop swing bar. The V-shaped swing bar is rotatably mounted on the inner side of a drive side wallboard through a pile head. One end of the V-shaped swing bar is hinged to a piton rod of the stop cylinder, and the other end of the V-shaped swing bar is hinged to one end of the stop link. The other end of the stop link is hinged to one end of the stop swing bar. The other end of the stop swing bar is fixed to the camshaft. The stop mechanism is capable of avoiding waste paper in case of an anomaly of paper on a discharge board.

The invention discloses a flexible transmission connecting device comprising a first connecting disk, a second connecting disk and connecting pieces; the first connecting disk and the second connecting disk are arranged oppositely, and the connecting pieces are flexible connecting pieces; the first ends of the connecting pieces are fixedly installed on the first connecting disk, and the second ends of the connecting pieces are fixedly installed on the second connecting disk. According to the flexible transmission connecting device, the deviation of two axes between a prime mover and load equipment can be compensated effectively, and the maximum deviation can be 10 mm; meanwhile, the problem of vibration impact generated by transmission can be further solved, and the device has the advantages of compact axial dimensions, no need of lubrication, no noise, large transmitted torque, low manufacturing cost and simple installation and maintenance; the working procedures of correction, regulation and the like during installation of a rigid transmission connecting device are avoided, and the flexible transmission connecting device is especially suitable for transmission connecting betweentwo shafts which are not concentric under the condition that the prime mover and the load equipment are installed in a floating mode or one ends of the prime mover and the load equipment are installedin the floating mode and the other ends of the prime mover and the load equipment are installed fixedly; and the use of the transmission connecting device is not affected in bad working environment.

The invention discloses a full vehicle abnormal sound test room. The full vehicle abnormal sound test room comprises a test chamber and an equipment chamber which are used for carrying out a full vehicle abnormal sound test; an actuator used for inputting vibration to a full vehicle and a mass block arranged below the actuator are installed in the equipment chamber; and the mass block is connectedwith the ground through a first elastic piece. The full vehicle abnormal sound test room has good vibration isolation and noise reduction performance.

The invention discloses a rotary type exhaust gas processing device. The rotary type exhaust gas processing device comprises a chamber body, wherein the upper end part of the chamber body is provided with an exhaust gas processing region, and the lower end part of the chamber body is provided with a heat storing and heat exchanging region; a rotating wheel is arranged below the chamber body, two sides below the rotating wheel are provided with an air inlet pipe and an exhaust air pipe, respectively, an air inlet of the air inlet pipe is provided with an air inlet fan, and the exhaust gas processing region is internally provided with a heating burning machine. Exhaust gas is periodicity conveyed to the heat storing and heat exchanging region through the continuous rotation of the rotating wheel, so that shock vibration generated by opening and closing an air channel through a valve is eliminated; exhaust gas treatment keeps continuous all the time, so that the condition that untreated exhaust gas is discharged because of the switching of the air channel valve and discharged gas can not meet a discharging requirement of China is avoided, exhaust gas is treated continuously, up-to-standard purified gas is continuously discharged, and environmental requirements of China are met.

The invention discloses a mechanical lock mechanism of an integrated linkage coordination valve. The mechanism comprises a lock shell, and an unlocking actuating cylinder and a coordination valve arearranged on the lock shell; a rocker arm and a lock hook are arranged at the outer ends of the unlocking actuating cylinder and the coordination valve, one end of the rocker arm is installed on a lockcolumn bolt, a tension spring is arranged between the other end of the rocker arm and the lock shell, an unlocking piston rod of the unlocking actuating cylinder abuts against the middle of the rocker arm, the lock column bolt is in clearance fit with the lock shell, and the lock column bolt and the rocker arm form a linkage body; a lock head of the lock hook abuts against or is separated from the lock column bolt, a jacking column is fixedly connected to the rocker arm between the lock head and the hinge bolt, and the coordination valve rod is jacked against or separated from the jacking column. Rodless cavities of the unlocking actuator cylinder and the coordination valve are communicated with a hydraulic oil path through an oil inlet pipe nozzle hole, and an oil outlet pipe nozzle holeis communicated with an execution component; during locking, the coordinating valve rod closes the oil outlet pipe nozzle hole, and during unlocking, the coordinating valve rod extends out, so that the rodless cavity of the coordinating valve is communicated with the oil outlet pipe nozzle hole.

The invention provides a three-station switch release mechanism and method. The three-station switch release mechanism comprises a pressing spring and a bracket connected with the pressing spring, wherein a release shaft and a control shaft are arranged on the side of the bracket; a shifting fork is arranged on one side, towards the release shaft, of the bracket; a front limiting swing rod is arranged on the release shaft in the axial direction; a limiting roller is arranged in the middle of the front limiting swing rod; a control swing rod is arranged on the control shaft; a gear detent swing rod is also connected onto the front limiting swing rod; a detent in contact with a gear is arranged on the gear detent swing rod. The three-station switch release mechanism is simple in structure, the detent is utilized to limit the rotation of the gear after switch-on is finished, and the condition that in a conventional three-station switch operating mechanism, after the operation of the switch-on process is finished, the whole operating mechanism is likely to be subjected to impact vibration, which is caused by the fact that energy storage and release processes appear repeatedly when a spring is pulled upwards, is avoided. Sliding is replaced by utilizing rolling to reduce friction, and the force balance is utilized to stably clamp the front limiting swing rod on the release shaft, so that the condition that a greater moment of force needs to be input to the control shaft in switch-off is prevented.

The invention belongs to the technical field of hypersonic wind tunnel test equipment, and discloses an electric heating element for a large-flow high-temperature high-pressure high-speed gas environment and a processing method. The electric heating element adopts a clamping plate type structure and comprises a plurality of electric heating tubes arranged in parallel, an upper surface clamping plate covering the upper surfaces of the electric heating tubes, a lower surface clamping plate covering the lower surfaces of the electric heating tubes, and a protection box covering the neutral ends of the electric heating tubes. According to the machining method, an upper surface clamping plate, an electric heating pipe and a lower surface clamping plate are clamped and folded through a tool, then a pin penetrates through the upper surface clamping plate and the lower surface clamping plate, the upper surface clamping plate, the lower surface clamping plate and a protection box are welded through argon arc welding, and the electric heating element becomes a square body. The electric heating element adopts a clamping plate type structure, the strength of the electric heating element can be improved, the contact area is increased, the heat exchange efficiency is improved, and the wind tunnel test quality and efficiency are ensured. The processing method is simple and reliable, high in precision and small in deformation.

The invention discloses an equipment main body. The equipment main body comprises a metal upper shell, a screen assembly detachably, a base lower shell, and a plurality of watch lugs, wherein the metal upper shell is used as an antenna, the screen assembly detachably is mounted on the surface of the metal upper shell, the base lower shell is detachably mounted on the bottom surface of the metal upper shell, and the plurality of watch lugs are arranged on the side wall of the base lower shell and are used for mounting spring bars. Thus, the shell of the metal upper shell is used as an antenna part for wireless signal conversion and transceiving; each watch lug is mounted on the base lower shell; and therefore, compared with the prior art, the equipment main body can greatly improve antennaclearance, and reduce signal interference and loss; impact generated by collision can be firstly transmitted to the lower base shell through the watch lugs and then transmitted to the upper metal shell after being absorbed by the lower base shell, and therefore, impact vibration is prevented from being directly transmitted to the upper metal shell, and the screen assembly is effectively preventedfrom being affected by large impact, and the damage probability of the screen assembly is reduced. The invention further discloses a wearable device. The wearable device has the same advantages as theequipment main body.

The invention provides an airbag-type composite load reduction device for a navigation body to enter water. The airbag-type composite load reduction device comprises a fairing and an airbag load reduction device, wherein the head of the fairing is sealed and is in a sharp arch shape, the inner wall of the tail end of the fairing is separably connected with the outer wall of the head of a main projectile body, and the airbag load reduction device is arranged in the fairing and is in contact connection with the fairing and the main projectile body separately, and comprises an airbag and a gas generation device. After the airbag-type composite load reduction device for the navigation body to enter water enters water, the fairing is broken and separated from the main projectile body, and the air generation device inflates an airbag to reduce the load and is separated from the main projectile body. The airbag-type composite load reduction device is used for load reduction on the head of thenavigation body in the process of aerial delivery or in the process of launching the navigation body into water at the medium-high speed, and is suitable for buffer and load reduction for the navigation body which enters water at a vertical or large inclined angle at the speed of 20 m / s to 70 m / s.

The invention discloses a packaging device for a piezoelectric component. An upper cover and a lower cover correspondingly rotate to be clamped and fixed so as to form an accommodating space; a hole is formed in the middle of the upper cover and in the middle of the lower cover respectively; the inner edge of the upper cover and the inner edge of the lower cover are provided with a groove at the periphery of the hole respectively, and an annular elastomer is correspondingly embedded into the groove; the piezoelectric component is arranged in the accommodating space and between the elastomer of the upper cover and the elastomer of the lower cover; a conducting strip is arranged on the external surface of the upper cover and the external surface of the lower cover respectively; and a bent extending part of the conducting strip, such as a cylindrical conducting body passes through the hole in the middle of the upper cover, the hole in the middle of the lower cover, and the elastomers embedded into the grooves respectively, and is connected to nodes on the upper surface and lower surface of the piezoelectric component by welding, and reacting force which is applied to the grooves and the cylindrical conducting bodies by the elastomers is used to buffer upper, lower, left and right parts, so that a 360-degree anti-vibration effect is achieved.

The invention provides a gas inlet of a pressure container. The gas inlet is located in a barrel or a shell cover below a distribution plate on the lower portion in a shell of the vertical pressure container, and circumferential openings are formed in the distribution plate. The gas inlet of the pressure container comprises at least two tangential penetration type oblique openings formed in axial symmetry along the shell. The pressure container is provided with at least two gas inlets formed in axial symmetry in shape and position, gas inflow connecting pipes are conveniently installed, the flow state of process gas entering the shell is improved, the flow speed is reduced, pressure is balanced, impact vibration is avoided, then the process gas flows out through the radial openings in the gas flow distribution plate, materials from the upper portion of a reactor to which the pressure container belongs form a balanced fluidized bed, and the capacity large scale is achieved. The invention further discloses the pressure container. Gas flow balance, particle product fluidity and internal structure fatigue resistance can be considered at the same time, the advantages of being high in anti-deposition capacity, stable in production and the like are achieved, the spatial arrangement is safer and more scientific, and the service life of the pressure container can be prolonged.

A motor equipped with dampers for reducing the vibration and noise of a rotator is disclosed. The motor includes: a stator block configured such that a core around is fastened and installed in the upper outer portion of the inside of a cover; a printed circuit board (PCB) fastened and installed below the stator block inside a motor housing; a shaft installed inside the stator block; and a rotor configured to include a magnet; wherein the motor housing includes an upper cover and a lower cover, a plurality of fastening portions is formed on the upper cover, and a plurality of fastening depressions is formed on the lower cover; and wherein the motor further includes dampers configured to receive and accommodate the fastening portions, to be inserted over side surfaces of the base portion of the stator block, and to cancel vibration and noise.

The invention belongs to the technical field of tunnel engineering, and particularly discloses a tunneling device and method adopting laser cutting for rock breaking. The tunneling device comprises aself-travelling mechanism, a connecting mechanism and a cutting mechanism; the self-travelling mechanism is used for achieving moving of the whole tunneling device; the connecting mechanism comprisesa main driving shaft, a swing arm and an auxiliary driving shaft which are connected sequentially; the cutting mechanism comprises a laser cutterhead mounted on the auxiliary driving shaft and a plurality of laser cutting heads which are mounted on the laser cutterhead and arranged in a crossed mode in the horizontal direction and the vertical direction; and a distance sensor is further mounted onthe laser cutterhead to detect the distance between the laser cutterhead and a to-be-cut rock layer. The tunneling method adopts the tunneling device to break rock so as to achieve tunneling. The loss of a cutter is avoided, cutter replacing is not needed, and the cutting efficiency is high.

The invention discloses thin-walled part mirror image milling equipment and method based on follow-up non-contact support. The thin-walled part mirror image milling equipment comprises a milling system, a working table and a supporting system, wherein the milling system involves a main shaft, a milling cutter is mounted at the end part of the main shaft, the supporting system involves a supportinghead, the milling system further involves a sensor, a central through hole is formed in the supporting head in the axial direction, the thin-walled part mirror image milling equipment further involves an air supplying system and an industrial personal computer for achieving automatic control, and a pump and a valve are mounted in the air supplying system. In the cutting process, the force millingdirection and the amplitude data of the milling cutter are collected in real time by a sensor, and under the working condition that the axial cutting depth is small, the central through hole of the supporting head generates thrust to a thin-walled part through a high-pressure air flow flowing to the back surface of the thin-walled part to prevent the thin-walled part and the milling cutter from separating, so that the occurrence of the impact vibration is avoided; and under the working condition that the axial cutting depth is large, the central through hole of the supporting head generates tension to the thin-walled part through a high-pressure air flow away from the back surface of the thin-walled part, so that the occurrence of overcutting is avoided.