74results about How to "Improve balance stability" patented technology

The invention relates to an overhead power transmission line electrification deicing device. The overhead power transmission line electrification deicing device includes an insulating deicing bar; the deicing bar is erected at one side of a power transmission line through a carrier frame; the carrier frame is provided with a driving mechanism; the carrier frame comprises two upright rods arranged in parallel; the two upright rods are positioned through at least two parallelly-arranged transverse rods between the two upright rods; the top end of each upright rod is suspended on the power transmission line through a suspending mechanism respectively; the deicing bar is vertically arranged on an end portion of a first transverse rod, wherein the end portion of the first transverse rod extends out from the upright rods; the height of the deicing bar is corresponding to the height of the top end of the upright rods; and the driving mechanism comprises a driving wheel and an insulating transmission rod wound on the driving wheel. The overhead power transmission line electrification deicing device of the invention is simple in structure. With the overhead power transmission line electrification deicing device adopted, deicing operation can be performed under a situation of electrification of a whole line, and the reliability and quality of power supply of a power system can be effectively ensured on the premise that the efficiency of the deicing operation can be improved.

The invention discloses a multi-station rotational forming machine. The multi-station rotational forming machine comprises a host machine, injection mould sets, and blowing mould sets; the host machine comprises a rotary driving mechanism (16), and a rotary disk (15) connected with the rotary driving mechanism, and also comprises a workbench panel (18) below the rotary disk; the injection mould sets and the blowing mould sets are arranged on the rotary disk and the workbench panel at equal interval angles. According to the multi-station rotational forming machine, preferable utilization of the space of the rotary disk is realized, yield is increased, and at the same time equipment equilibrium stability is improved; and in addition, the rotating angle is smaller than that in the prior art, so that processing period is shortened, and production efficiency is increased further.

The invention provides a light-weighted composite momentum flywheel for satellite and manufacture method thereof. From inside to outside, the flywheel is provided with a hub, spokes and a rim. Connecting grooves are formed in the periphery rim of the juncture of the hub and the spokes, centre holes are formed at the middle of the periphery. A plurality of mounting holes are formed between the groves and the centre holes. The spokes comprises a outer spoke ring, wire spokes and an inner spoke ring. The outer spoke ring is connected with the rim, the wire spokes are multiple, and the inner spoke ring is connected with the hub. Connecting humps are formed in the inner spoke ring. Annular humps are formed in the inside wall of the rim. The hub and the spokes are connected with the grooves and the humps structure in a meshing and co-curing mode. The outer spoke ring is connected with the outer rim in a bonding and close-fitting mode. The bottom of the spokes are arranged on the annular humps in the inside wall of the rim. The light-weighted composite momentum flywheel for satellite and manufacture method thereof have the advantages that the light carbon fiber composite with high strength and good damping property is used. A faster connection mode is replaced by the connection mode of close-fitting and bonding. The passive weight of the flywheel is reduced greatly, the damping capacity of the flywheel is enhanced greatly, and the manufacturing cycle is shortened.

The invention discloses a high speed double-ended vessel capable of displacing left and right for horizontal sailing without sinking or turning around, which consists of a double-ended hull, power wings arranged under water lines on two sides of the double-ended hull, balance wings, an airbag chamber provided with airbags, a capsule in which a power system and an air supply system are arranged, and a comprehensive services building. The high speed double-ended vessel is characterized in that: double ends of the vessel are symmetrical and are all stems; the power swings on the two sides replace the traditional rear propeller and rudder plate; when the power swings on the two sides simultaneously drain water to a stem 2, the vessel advances towards a stem 1; inversely, when the power swings on the two sides simultaneously drain water to the stem 1, the vessel advances towards the stem 2; when a swing on one side simultaneously drains water to the outside of the side, the vessel horizontally sails off shore or inshore; the swings on the two sides simultaneously drain water downwards, the sinking vessel can instantly float upwards under the reacting force, and when airbags on the two sides are started, the vessel can be locked and prevented from sinking; when the balance swings on the two sides are stretched, the vessel can form a widened whole for resisting hurricanes without rollover; therefore, the aims that the vessel can displace left and right for horizontal sailing without sinking or turning around, and two ends all can sail at high speed are achieved.

The invention discloses a large-roller recreational vehicle which comprises a roller. A U-shaped seat frame is arranged in a spoke; a pedal transmission chain component, a pedal transmission chain, a spoke transmission chain component and a connection transmission rod are arranged below the seat frame; and a steering control component, a brake component and left and right balance pulleys outside the spoke are arranged above the seat frame. The seat is placed in a space surrounded by the large roller and the spoke, the pedal transmission chain component is arranged below the seat frame, thus the center of gravity is remarkably lowered, the stability is improved, and the elastic spoke and the left and right balance pulleys prevent the turnover and falling injury of a wheelbarrow. The large-roller recreational vehicle disclosed by the invention is a novel bodybuilding, recreation and instead-of-walk toy, has the characteristics of low center of gravity and stable running as well as effects of creating novelty and stimulation, and is particularly suitable for the physical fitness exercises in the teenage entertainment places.

The invention provides a suction type robot hand grab applied to circular arc surface workpieces. The suction type robot hand grab is arranged at the movable end of a robot, and is used for grabbing the circular arc surface workpieces. The hand grab comprises a connecting plate connected with the movable end of the robot and more than one bracket arranged on the connecting plate, wherein each bracket is provided with a driving device and a suction unit connected with the driving device; the driving devices are arranged on the brackets, and pushing parts of the driving devices are connected with the suction units; the suction units are arranged at the bottom of the connecting plate; suction points of the suction units and the workpieces are circumferentially distributed in a manner that the centers of the workpieces are centers of circles. The suction type robot hand grab applied to the circular arc surface workpieces is simple and compact in structure, high in universality and applicable to circular arc surface workpieces in different specifications; the workpieces can be stably grabbed in a rapid movement process of the robot, so that the problem about match between the hand grab and the workpieces is effectively solved, the grabbing balance and stability of the hand grab are improved, and production efficiency is improved.

The invention discloses a ship rollover prevention emergency device which comprises a hull. Airbags are respectively arranged at both sides of the hull; the airbags are connected with high-pressure air sources by high-pressure air delivery pipes; each high-pressure air delivery pipe is provided with a control valve and a pressure-relieving deflating mechanism. According to the device, when a ship encounters a dangerous case that the ship is easy to roll over and sink in the sailing process, two airbags can be rapidly inflated so as to increase a buoyancy force of the ship, thereby effectively preventing rollover or sinking of the hull and ensuring safety of people and equipment and normal running of the ship.

The invention provides a diamond string bead wire saw. The diamond string bead wire saw comprises a vertical lifting device, a flywheel driving device, a hydraulic tensioning device, a rotation adjusting device and a moving device. The components of all the devices exist independently, installation and maintenance are convenient, the structural distribution of the components of the devices is reasonable, and the whole diamond string bead wire saw is compact in structure, small in structural size and small in occupied area. Through lifting control of the vertical lifting device, rotation adjustment of the rotation adjusting device and front-and-rear movement of the moving device, the diamond wire saw cuts stone in a multi-angle and multi-dimension manner, special-shaped cutting can be effectively achieved, the components of all the devices are controlled by an electric control console, integrated control is achieved, control operation is easy, and the special-shaped cutting efficiency is high.

The invention provides a balance auxiliary training platform for physical training, comprising a balance side plate, a rolling ball, a middle support plate, a connecting top plate, a climbing ladder, a support rod, a slider, an arc-shaped groove, a semi-cylindrical protrusion and a support horizontal plate, The connecting top plate is symmetrically supported on the top of the base plate through the support rods at the bottom; the balance side plates are provided at two places and are symmetrically welded to the four protective support rods, and the two balance side plates are located on the left and right sides of the track connecting plate. side; the buffer pad is placed on the top of the base plate and is located on the left and right sides of the main body of the training platform; there are two symmetrically arranged ladders, and the two ladders are respectively connected to the two connected top plates by rotation and are supported obliquely on the Connect the outside of the top plate in two places. The setting of the semi-cylindrical protrusion in the present invention, the semi-arc contact surface of the semi-cylindrical protrusion can reduce the sliding friction force with the chute in the middle of the track connecting plate during sliding, so that the slider can slide more smoothly and ensure the sliding Balance training goes well.

The invention relates to a high-speed ship on the basis of double inclinable screw propellers, and belongs to the technical field of ship propulsion. The double inclinable screw propellers are symmetrically distributed on the middle upper portion of the high-speed ship and can be reasonably inclined at certain angles, so that propulsion force has upward component force and component force in an advancing direction. The upward component force overcomes a part of the gravity of the high-speed ship, the immersion depth of the ship is reduced, and the resistance on the ship is decreased; and the component force in the advancing direction pushes the ship to advance. A tail fin screw propeller is arranged at the tail of the ship, the inclination position of the tail fin screw propeller can be changed, and the tail fin screw propeller can be matched with the front double screw propellers in an equilibrium manner, so that the ship can run stably. The high-speed ship overcomes shortcomings of poor stability of equilibrium of a common high-speed ship and poor mobility of the common high-speed ship, and has the advantages of capability of running at a high speed, excellent mobility and stability of equilibrium, and the like. Besides, the high-speed ship is low in cost and has popularization value.

A high-speed double-ended vessel free from sinking, capable of turning around without swinging a rudder and capable of traversing by means of left and right displacement comprises a double-ended vessel body, power vessel fins, balance vessel fins, air bag chambers with air bags, a sealing cabin and a comprehensive facility building. The power-driven vessel fins are mounted below a waterline and on two sides of the double-ended vessel body, and a power system air supply system is arranged inside the sealing cabin. The high-speed double-ended vessel is characterized in that two ends of the vessel body are symmetric and are stems; the power vessel fins on two sides replace a traditional rear rudder plate and a traditional propeller; when the vessel fins on two sides are used for draining to the stem 2, the vessel advances towards the stem 1; when the vessel fins on two sides are used for draining to the stem 1, the vessel advances towards the stem 2; when the vessel fin on one side is used for draining to the outer side of a ship board, the vessel can perpendicularly pull in to shore and go off the shore by means of traversing; when the vessel fins on two sides are used for draining downwards, a sunk vessel can only rise and float up immediately under the action of reacting force, and the vessel can be prevented from sinking by being locked by the air bags on two sides; and when the balance vessel fins on two sides are stretched, the vessel can form a widened integral so as to be resistant to huge wind and avoid side tipping. Therefore, the high-speed double-ended vessel is free from sinking, capable of turning around without swinging the rudder and capable of traversing by means of left and right displacement.

The invention discloses a ship computer control system and method. The ship computer control system comprises a ship body, a groove is formed in the bottom of the ship body, and the groove is internally provided with an adjusting block through a lifting mechanism. Door-shaped supports slidably connected with the ship body are arranged on the two sides of the ship body correspondingly, electric pushing rods for pushing the supports out are arranged in the ship body, and airbags are arranged on the supports. The airbags are connected with a compressor through high-pressure gas delivery pipes, and the electric pushing rods, the lifting mechanism and the compressor are connected with a microcomputer, the lifting mechanism is a shear-fork-type electric lifting mechanism, and support guiding centralizing mechanisms are arranged in the ship body. According to the ship computer control system, swinging and lateral overturning can be effectively prevented under the condition of stormy waves orship body imbalance, the travelling safety of the ship body is ensured, and the ship computer control system is durable and long in service life.

The invention discloses a wind driven generator rotating blade. The blade comprises a helical blade body which is integrally formed, multiple reverse direction air guide grooves are formed in the back side of the blade body at a certain angle relative to the horizontal direction in a mode that the grooves are distributed at intervals, multiple transverse positive direction air guide grooves are formed in the front side, among the reverse direction air guide grooves, of the blade body, multiple reverse direction vent holes penetrating through the blade body are formed in the reverse direction air guide grooves, when air is blown from the front side of the blade body, action is produced into the positive direction air guide grooves, and the blade body is propelled to rotate, while reverse direction resistance air at the back side of the blade body moves into the reverse direction air guide grooves and leaves the blade body through the reverse direction vent holes in the reverse direction air guide grooves. A wind driven generator is further disclosed. The wind driven generator comprises a generator body, a base, a revolving shaft and two wind driven generator rotating blades, the wind driven generator rotating blades are fixedly connected to the revolving shaft, double helix cooperation is formed between the two wind driven generator rotating blades, the revolving shaft is fixedly connected with the base, the lower end of the blade body is fixedly connected with the base, and the lower end of the revolving shaft is connected with the generator body.

The invention discloses a hoisting device with a self-adaptive supplement structure for metal heat treatment, and belongs to the field of metal heat treatment. According to the hoisting device with the self-adaptive supplement structure for metal heat treatment, a clamping part is installed on the inner wall of an annular frame to clamp the outer wall of a cylindrical iron ingot, so that the covered area during iron ingot fixing is effectively reduced; iron blocks are hoisted through the device instead of being directly stacked for heat treatment, so that the bottom of the iron ingot is effectively prevented from being covered by the contact surface when the iron ingot is placed, and the heating uniformity of the iron ingot during heat treatment is further guaranteed; through fixed connection of a clump weight and a sliding bar, power is provided for movement of the sliding bar by means of the gravity of the clump weight, so that a first clamping arm and a second clamping arm can deform in a self-adaptive manner to keep firm clamping of the iron ingot, the situation that hoisting and clamping of the iron ingot are loosened due to expansion and contraction of the iron ingot is avoided, and the using stability and safety of the device are effectively guaranteed.

The invention provides a sealing bottle. The sealing bottle comprises a bottle cover and a bottle body, wherein the bottle cover comprises a sealing pad, inner threads and an anti-sliding groove; the bottle body comprises bottleneck outer threads, a sealing pad clamping ring and a concave part, wherein the circular sealing pad is clamped and fixed at the top end of the inner part of the bottle cover; the concave inner threads are surrounded on the inner side wall of the bottle cover; bottleneck outer threads which are screwed with the inner threads are arranged on the bottle neck outer side wall of the bottle body; a convex sealing pad clamping ring is further arranged at a position, higher than bottleneck outer threads, at the bottleneck outer side wall surrounding the bottle body; a concave part which is sunken inwards in the shape of an arc is arranged on the middle of the bottom of the bottle body; longitudinal profiles of the inner threads are rectangular; and longitudinal profiles of the bottleneck outer threads are trapezoidal. The sealing bottle has the beneficial effects that the sealing performance is good, and test paper stored inside can be completely isolated from an external environment to achieve moisture-proof effect. The sealing bottle is simple in structure and convenient in use.

The invention discloses a transverse and longitudinal integrated non-power framework device with temperature-measurable axle boxes, and belongs to the field of railway vehicle framework devices. The transverse and longitudinal integrated non-power framework device comprises a transverse and longitudinal integrated interconnection framework and four annular vibration reduction axle boxes. The transverse and longitudinal integrated interconnection framework comprises two transverse and longitudinal integrated frameworks, and each transverse and longitudinal integrated framework comprises an integrated side beam and an integrated cross beam which are integrally formed. Each integrated side beam comprises a side beam middle section which serves as two bird wing connecting parts and is locatedat a lower position, and two bird-wing-shaped side beam cantilever sections which are symmetrically and fixedly connected to the two ends of the side beam middle section. On the premise that the installation position and the vibration reduction index of a primary suspension axle box device are guaranteed, the overall transverse width size and the turning radius of the bogie are effectively reduced, the curve passing capacity of the bogie is further improved, the vibration influence degree of the bogie on a vehicle body is reduced to the minimum, the balance stability and comfort of the vehiclebody are enhanced, the fatigue loss of the overall structure is effectively reduced, and the overall service life of the bogie and the vehicle body is greatly prolonged.

The invention provides sightseeing equipment for water surface drifting. The sightseeing equipment for water surface drifting comprises locating holes, a base plate, foot rings and hemispherical counterweight projections; the two locating holes are formed in a transverse slide plate of a sliding supporting plate in a through manner; a certain distance is spaced between the two locating holes; a locating ring is arranged at the top end of a rectangular sliding sleeve in a supported manner; the locating ring is arranged close to the outer edge of the tail end of the rectangular sliding sleeve; four support rods are arranged; each two of the four support rods are in one group and symmetrically arranged at the top end of the base plate in a supported manner; and the hemispherical counterweightprojections are fixedly welded at the center of the bottom of the base plate. According to the sightseeing equipment for water surface drifting, as the foot rings are arranged, both feet of a sightseer are correspondingly inserted into the two foot rings when the sightseer stands up to enjoy the beautiful scenery; the foot wings can enable the body of the sightseer to be firmly limited and supported on the base plate; and the foot rings can furthest guarantee the stability of the body of the sightseer during standing by working together with the support rods so that the sightseer is preventedfrom swinging from side to side with a buoy to bend to the side and fall into the water.

The invention provides a light-weighted composite momentum flywheel for satellite and manufacture method thereof. From inside to outside, the flywheel is provided with a hub, spokes and a rim. Connecting grooves are formed in the periphery rim of the juncture of the hub and the spokes, centre holes are formed at the middle of the periphery. A plurality of mounting holes are formed between the groves and the centre holes. The spokes comprises a outer spoke ring, wire spokes and an inner spoke ring. The outer spoke ring is connected with the rim, the wire spokes are multiple, and the inner spoke ring is connected with the hub. Connecting humps are formed in the inner spoke ring. Annular humps are formed in the inside wall of the rim. The hub and the spokes are connected with the grooves and the humps structure in a meshing and co-curing mode. The outer spoke ring is connected with the outer rim in a bonding and close-fitting mode. The bottom of the spokes are arranged on the annular humps in the inside wall of the rim. The light-weighted composite momentum flywheel for satellite and manufacture method thereof have the advantages that the light carbon fiber composite with high strength and good damping property is used. A faster connection mode is replaced by the connection mode of close-fitting and bonding. The passive weight of the flywheel is reduced greatly, the damping capacity of the flywheel is enhanced greatly, and the manufacturing cycle is shortened.

The invention discloses a pneumatic lift platform and a lift control method thereof. A movable support frame is arranged below the lift platform; an underframe is provided with position limiting frames; each position limiting frame is provided with an air source triplet; a connecting plate is arranged between support rods II; the connecting plate is provided with a universal joint; the underframe is provided with air cylinders; a mandril is arranged in each air cylinder; the underframe is provided with a mounting plate; a safety retaining slot is formed in the mounting plate; a safety plate is arranged in the safety retaining slot; a safety valve air cylinder mandril is arranged in a safety valve air cylinder; the safety valve air cylinder mandril is connected with a safety valve; the safety plate is provided with a mounting sleeve; a safety pin is arranged in the mounting sleeve; the safety pin is nested with a pulley; and the lift platform is provided with foot pedals. The pneumatic lift platform disclosed by the invention is capable of obviously increasing production efficiency, saving productive labor force, increasing production quality and ensuring continuity of production, and is small in occupied area, saving in used field, convenient to use, energy-saving, environmental friendly, high in safety factor, high in load and stable to operate.

The invention relates to a sole and provides an anti-slide shoe sole and a shoe with the shoe sole. The anti-slide shoe sole has the anti-slide performance in both processes of standing contact and force-applied walking, and people also can stably walk even if a slippery ground. The anti-slide sole comprises an outsole, wherein the outsole corresponding to a heel, an arch, metatarsal bones, and a toe of the sole is respectively composed of a heel zone, an arch zone, a metatarsal bones zone and a toe zone; a square bulge zone is arranged on the heel zone of the outsole, and the square bulge zone is formed by several square bulges, a draining grove for draining fluid is arranged between adjacent square bulges; a cylindrical bulge zone is arranged on the metatarsal bones zone, and composed of several cylindrical bulges; a draining gap for draining fluid forms between adjacent cylindrical bulges; a strip-shaped bulge zone is arranged on the toe zone of the outsole and formed by a plurality of strip-shaped bulges, and a draining groove for draining fluid is formed between adjacent strip-shaped bulges.

The invention discloses a bridge deck height monitoring device and method based on laser ranging. The bridge deck height monitoring device comprises a laser range finder, a rotating mechanism and a balance connecting mechanism. The laser range finder comprises a laser range finding assembly. The laser range finding assembly comprises a housing, and a laser emitter and a laser receiver which are arranged at the front end of the housing. The rotating mechanism comprises a rotating table, a first gear set controlling the rotating table to rotate, a micro-rotating platform fixedly connected with the laser ranging assembly, and a second gear set controlling the micro-rotating platform to rotate. The inclination angles theta of all the laser ranging assemblies are integrally adjusted through thefirst gear set; the inclination angle theta of the single laser ranging assembly is adjusted through the second gear set; the change of the height of the bridge floor is measured in a manner of integrally combining with the movement of a single laser ranging assembly when the laser range finder is at the same inclination angle, and the change of the height of the bridge floor of the bridge is monitored in real time in a multi-point manner, so that timely measures are taken, and real-time detection and early warning of the bridge are realized.

The invention provides a detachable transformable universal scooter having independent two-wheel drive design and allowing two wheels to relatively rotate or turn through a connection rotary mechanism. In addition, the positional design of footboards, the connection rotary mechanism and the wheels is optimized, spacing of the two wheels is effectively shortened so that overall size and weight of the universal scooter are decreased, and all-directional flexible turning is achieved. The detachable transformable universal scooter has good balancing stability, balance is easier for a rider to master, operating is easier for the rider, the detachable transformable universal scooter can turn in situ stably and flexibly and can turn freely and all-directionally even in a narrow passage. In addition, the detachable transformable universal scooter herein can be detached and transformed into two independent operating vehicles for two riders to use at the same time, the two-motor design of the detachable transformable universal scooter is made full use, detaching-deforming interest is provided for a rider, and another riding mode is provided for the rider.

The invention discloses a novel underwater detection platform which comprises a main engine of a platform device which works in water and a remote control which is used for controlling the underwater motion of the platform and is arranged outside the water. The main engine of the platform device comprises a master control box, waterproof motors, a waterproof camera, a water pressure sensor, a propeller, a data line, a steel frame, spindle-shaped hollow rotors, a switch, a circuit board, a battery, a wire and a motor driver, wherein the master control box and the spindle-shaped hollow rotor are made from PVC materials, and are connected with each other through bolts and waterproof glue, the waterproof motors are hung outside the top ends of the hollow rotors, the bottom of the master control box is connected with the steel frame, the steel frame is connected with the waterproof motors, and the main engine of the platform device is connected with the remote control through the data line. According to the novel underwater detection platform, underwater detection can be conducted in a rapid, convenient and stable mode, equilibrium stability of underwater motion is good, shaking influence caused by water flow and wind wave is tiny, underwater images and depth data can be collected in real time, and the operation is very convenient.

The invention relates to a cogging mill of high-strength deformed steel bars, in particular to a cogging mill of PSB830 high-strength deformed steel bars. The problems that in cogging mills in the prior art, outer structures do auxiliary work, instability generated when the cogging mills carry out steel rolling processing on deformed steel bars and shift is increased, and safety generated when thecogging mills are utilized for processing the deformed steel bars is reduced are solved. The cogging mill comprises a base, a first vertical rod and a second vertical rod. Middle blocks are connectedand arranged between the first vertical rod and the second vertical rod. Connecting plates are fixed to the two end walls of each middle block through screws. Round through holes are formed in the upper walls of the connecting plates, and guide rods are arranged in the through holes in an inserted connection manner. One end of each guide rod is fixed to the base through a stud. An upper roller isconnected between the middle blocks through mounting rods. Through the arrangement of the cogging mill, a lower roller achieves the functions of guide and conveying on the rolled deformed steel bars,and the safety generated when the cogging mill is utilized for carrying out circulating steel rolling processing on the deformed steel bars is also improved.

The invention discloses a sliding rail buckling type warehouse stacking machine. The machine comprises an aluminum profile support, the outer side of the aluminum profile support is sleeved with a carbon steel guide rail, the two ends of the aluminum profile support are fixed to the inner side of a fixed foot stand through angle steel, a U-shaped buckle plate is fixed to a body of the carbon steelguide rail, and the other side of the U-shaped buckle plate is connected to a buckling cover plate through a bolt; and the back face of the buckling cover plate is fixed to the inner side face of a stand column guide rail, and a carrying dragging table is installed on the stand column guide rail. The mode that a ground rail is arranged in a conventional stacking machine to serve as an operation rail is improved, the guide effect of the ground rail is changed into the fixing effect, so that the whole stacking machine frame structure can be firmly grasped and stabilized by being embedded into the ground, static stability can be kept no matter when the stacking machine picks up goods at a high position or brakes emergently; and the aluminum profile support and a top layer aluminum profile are parallel to each other, the stand column guide rail is perpendicular to the aluminum profile support and the top layer aluminum profile at the same time and keeps movable connection, and stability can be guaranteed while horizontal left-right movement is achieved.

The invention discloses a balance control device of the spray boom of a high ground clearance boom sprayer and a control method of the balance control device. The balance control device comprises a balance control system, wherein the balance control system comprises components such as a controller, an electromagnetic damper and sensation equipment. When the controller judges that the spray boom moves downwards according to detection signals of the sensation equipment, the electromagnetic damper is controlled to generate damping force for obstructing the rotor of the spray boom to rotate, and according to movement states of the spray boom, the damping force of the electromagnetic damper is adjusted in a soft stopping mode, so that vibration of the spray boom tends to be stable; and when thecontroller judges that the spray boom moves upwards, power supply current of the electromagnetic damper is cut off, and then the electromagnetic damper does not generate the damping force till the speed that the spray boom moves upwards is turned into zero. By adopting the device and the control method of the device disclosed by the invention, the balance stability of the spray boom of the high ground clearance boom sprayer in operation can be effectively improved, and the device is precise in control, reasonable in structure planning, easy to manufacture, implement and maintain and applicable to popularization and application.

The invention provides a film watching system of a flying cinema. The film watching system comprises a steel structure, a cabin, a cabin lifting frame, a protective turnover plate, a linear cabin moving device, a cabin swing mechanism and a controller, wherein the cabin lifting frame is movably connected with the steel structure through the linear cabin moving device and is connected with the cabin through the cabin swing mechanism, the linear cabin moving device is arranged at the top of the cabin lifting frame, and the cabin swing mechanism can enable the cabin to swing in the front-back direction and the left-right direction. The film watching system of the flying cinema has the advantages that the cabin and the cabin lifting frame can linearly move back and forth on the steel structure under the drive of the linear cabin moving device, and the cabin can swing on the cabin lifting frame in the front-back direction and the left-right direction, so that audiences can experience stimulation brought by hovering flight while fully feeling impressive dome-screen film and video content to gain better 4D experience.