49results about How to "Easy U-turn" patented technology

The invention relates to a remote control hydraulic cleaning device of a photovoltaic power station assembly. The remote control hydraulic cleaning device is suitable for various large desert photovoltaic power stations, various terrain matrixes and various specifications of photovoltaic assemblies and comprises a remote control cleaning vehicle and a remote control cleaning mechanism, wherein the remote control cleaning vehicle comprises a frame mechanism, a walking unit, a hydraulic power system and a remote control system, the remote control cleaning mechanism comprises a supporting arm unit and a cleaning unit and can have an efficient cleaning function on the surfaces of the photovoltaic assemblies. The remote control system can achieve real-time high-accuracy control on walking of the cleaning vehicle and actions of the cleaning mechanism. The remote control hydraulic cleaning device is automatic, efficient and safe and can perform one-time efficient dust removal on various long and short matrixes under the conditions of various road surfaces. The remote control hydraulic cleaning device is simple in structure, convenient to operate and control, practical, safe, stable and low in cost, and the technical problem that existing large desert power stations relying on manpower or simple cleaning vehicles in the severe environment are poor in cleaning effect, low in efficiency and high in cost is effectively solved.

The invention discloses a two-phase passing method for a level crossing. According to the method, three functional areas, namely an exit left turn area, an entrance buffer area and a crossing diversion area, are provided, wherein each functional area has signal control and signals of the functional areas are associated with each other. An inner left turn lane at the middle and an outer left turn lane at the left side of the road are parallel to define the exit left turn area; an entrance is provided with two parking lines, a parking buffer area is arranged between the two lines, wherein a parking area is arranged at the front part and a turning area is arranged at the rear part, and a left turn / turning to-be-driven lane is arranged on the outer side behind the main parking line; and the crossing diversion area is divided into a central straight crossing are, a corner left turn and right turn cross lane and a concave safety island. When passing is started, a left turn vehicle waiting atthe inner left turn lane is controlled to carry out parallel left shift to the outer left turn lane preferentially and quickly, and then straight, left turn and right turn motor vehicles in the opposite direction can pass without conflict; and when passing is prohibited, a turning vehicle can turn round from a turning area, and a left turn bus can preferentially enter the buffer area.

The invention discloses a mechanical hydraulic and active differential grouping hybrid steering system for a multi-axle hybrid vehicle. The system adopts mechanical control hydraulic power-assisted steering of first and second axle steering wheels and active differential steering of fifth and sixth axle electronically-controlled wheel hub motors, and the system is composed of a rear axle electronically-controlled active differential steering system, a steering operation mechanism 1, a steering transmission mechanism 2, a steering hydraulic control system 3, a steering controller, a display system 4 and an angle sensor device 5; a rear wheel set and a front wheel set rotate reversely during low-speed turning, the turning radius of the vehicle can be reduced, and the maneuverability of the vehicle is improved; the front wheel set has a steering function at a high speed, the rear wheel set has no steering function, the stability of the vehicle during high-speed turning and accelerated overtaking is improved, turning movement generated when the vehicle turns at the high speed is reduced, steering of the rear wheel set is automatically recognized by the steering controller without the intervention of a driver, and the vehicle is operated more easily.

The invention relates to the field of agricultural equipment, in particular to a multifunctional adjustable semi-automatic small-sized pesticide sprayer. The multifunctional adjustable semi-automatic small-sized pesticide sprayer comprises a rack, a left telescopic landing leg, a right telescopic landing leg, a pushing rod, a fixed rod, a folding rod, an intermediate pipe, a left rigid pesticide guide pipe, a right rigid pesticide guide pipe, a liquid pesticide box and a hydraulic pump; the rack comprises a front telescopic rod, a rear telescopic rod arranged in the X direction, a left connecting rod and a right connecting rod, the front telescopic rod is composed of a first sleeve and a first penetrating rod, and the rear telescopic rod is composed of a second sleeve and a second penetrating rod; the front end of the left connecting rod is fixedly connected with the first sleeve, and the rear end of the left connecting rod is fixedly connected with the second sleeve; the front end of the right connecting rod is fixedly connected with the first penetrating rod, and the rear end of the right connecting rod is fixedly connected with the second penetrating rod. According to the multifunctional adjustable semi-automatic small-sized pesticide sprayer, time and labor are saved, the efficiency is high, a person does not need to carry the liquid pesticide box on the back, turning is convenient, the multifunctional adjustable semi-automatic small-sized pesticide sprayer can be suitable for the width of crops needing to be sprayed and the plant height of the crops, and spacing between liquid pesticide spray heads can be adjusted to be suitable for operation on the small-area terrain.

The invention discloses a cane harvester. A running vehicle (2) of the cane harvester is provided with a movable pedestal (7) which is driven by a gear mechanism to rotate; the movable pedestal (7) is provided with a suspending arm (9) through a support and a suspending arm articulating shaft (8); the suspending arm (9) is provided with a cane colleting container; and one end of the cane colleting container, which faces to the movable pedestal (7), is provided with a cane inlet. Compared with the prior art, the cane harvester has good cane harvesting adaptability and can reliably and efficiently collect the harvested cane and release the cane conveniently and flexibly.

The invention relates to a carrier-based aircraft pilot dynamic simulated training system which comprises a simulator, wherein the simulator is provided with wheels and a rotating mechanism, and the wheels of the simulator are in contact with a sliding rail. The sliding rail is provided with a lower horizontal section and a higher horizontal section, and a slope section is arranged between the lower horizontal section and the higher horizontal section. Hoisting mechanisms are arranged below the lower horizontal section and the higher horizontal section of the sliding rail respectively, traction ropes located inside the hoisting mechanisms are arranged on hoisters in a rolling mode, and the traction ropes are connected with the simulator through traction arms and traction hooks. A controlling device used for controlling the hoisting mechanisms, the rotating mechanism and the traction arms is arranged in the simulator, and a braking device is also arranged inside the simulator. The simulated training system truly simulates the takeoff and landing of a carrier-based aircraft on an aircraft carrier, the carrier-based aircraft pilot can experience the feeling of takeoff and landing of the carrier-based aircraft on the aircraft carrier, the problem that the pilot has not enough flying psychological experiment is solved, the defects that the carrier-based aircraft pilot faces lots of dangerousness in real training and cost is high are overcome, and training effect can be improved greatly.

The invention discloses a steering wheel driving device of a vehicle, which comprises a mounting sleeve, wherein a rotary positioning sleeve and an upper cover plate are arranged on the mounting sleeve; the mounting sleeve and the rotary positioning sleeve are driven by a driving mechanism; a shaft seat is fixed at the lower end of the rotary positioning sleeve; and a steering wheel is arranged on the shaft seat. The steering wheel driving device is characterized in that: a motor is arranged in the steering wheel; a rotary conductive device is arranged in the rotary positioning sleeve; a lead wire of the motor is led out through the rotary conductive device; a rotary oil delivery joint is arranged between the upper cover plate and the rotary positioning sleeve; and the oil inlet of the rotary oil delivery joint is connected with an oil inlet pipe, while the oil outlet is connected with a hydraulic brake through a brake oil pipe. The steering wheel driving device has the advantages that: the steering wheel can steer, also can be used as a driving wheel of the vehicle, and is simple in structure and low in work noise, and the steering wheel driving device can realize wide-angle steering of the steering wheel, so that the vehicle does not need to repeatedly steer when turning around and conveniently and quickly steer to turn around. The steering wheel driving device reduces the driving labor intensity of a driver.

The invention provides a traffic control system suitable for a BRT (Bus Rapid Transit) road. The traffic control system comprises a signal control unit, a signal control circuit and traffic signal lamps; the traffic control system is also provided with a GPS (Global Positioning System) module and an earth magnetism coil module; the GPS module comprises a bus GPS positioner and a BRT bus position receiver; the earth magnetism coil module comprises earth magnetism inducting coils and an earth magnetism coil signal receiver; the earth magnetism inducting coils are respectively arranged under road surfaces of a though-traffic lane of social vehicles and a turning lane of the social vehicles. By using the traffic control system provided by the invention, driving information of a BRT bus can be accurately provided in time, the BRT bus reaching a crossing is preferably permitted, traffic flows of the though-traffic lane of the social vehicles and the turning lane of the social vehicles can be measured, fluent traffic of the BRT crossing is guaranteed, and reasonable waiting time of vehicles waiting to turn is obtained; the turning lane is arranged at an outermost side lane, so the vehicles are very convenient to turn.

The invention relates to an articulated combined soil preparation and sowing machine for leafy vegetables and belongs to the technical field of agricultural machines. The articulated combined soil preparation and sowing machine comprises a front rack and a rear rack; the rear end of the front rack and a middle rack form a lockable sliding pair; the front end of the rear rack is hinged with the middle rack; the front rack is provided with an articulated gearbox and supports against a rotary tillage mechanism driven by and connected with the articulated gearbox; the rear of the rotary tillage mechanism is provided with a scraping plate; the middle rack supports against a front compression roller; the front end of the rear rack is provided with a sowing boot, and the middle of the rear rack supports against a sowing device; and the sowing device is driven by and connected with a rear compression roller supported at the rear end of the rear rack. By using the articulated combined soil preparation and sowing machine, all operation steps including soil cultivation and preparation, bedding, furrowing and sowing as well as earthing for bed compression formation can be completed at one step, and the mechanical production capacity of fast-growing leafy vegetables such as Chinese little greens can be comprehensively improved; and the articulated combined soil preparation and sowing machine has good applicability and universality and can meet the requirement open field and facility plantation on flat and sloping lands.

The invention relates to a lifting device of an automobile chassis, which is characterized by comprising a power device, lifting plates, a rotating shaft, a bottom plate, universal wheel disks and driving wheels, wherein both ends of the power device are arranged on the upper ends of the lifting plates, the lower ends of the cross lifting plates are arranged on both ends of the bottom plate, the cross point of the lifting plates is provided with the rotating shaft, both sides of the bottom plate are provided with the universal wheel disks, and the lower parts of the universal wheel disks are provided with the driving wheels. The driving wheels are regulated by the universal wheel disks, therefore, an automobile can transversely move or freely rotate in 360 degrees; and the lifting device of an automobile chassis is convenient to replace tyres and maintain.

The invention relates to the technical field of aerospace equipment and discloses an unmanned aerial vehicle used for aerial photography. The unmanned aerial vehicle comprises a rack. A connecting board is fixedly installed on the middle portion of the lower surface of the rack. A transverse board is fixedly installed at the bottom of the front face of the connecting board. A baffle is fixedly installed on the middle portion of the upper surface of the transverse board. By the adoption of the unmanned aerial vehicle used for aerial photography, through cooperation among limiting holes, clamping nuts and first springs in fastening devices and a limiting board, the limiting board is pulled upwards, a picture taking mobile phone is placed on the inner side of the baffle, threaded rods are screwed, so that the picture taking mobile phone is fixed to the unmanned aerial vehicle conveniently, certain complex operation processes are avoided, the picture taking mobile phone fixing speed is increased, and picture taking mobile phone fixing convenience is improved; and when the unmanned aerial vehicle lands, due to the fact that the speed of the unmanned aerial vehicle in the landing processis reduced through elastic force of second springs, the situation that the unmanned aerial vehicle and even a picture taking device are damaged due to the too high landing speed of the unmanned aerial vehicle is prevented, and the landing stability of the unmanned aerial vehicle is improved.

The invention discloses a cable winding and unwinding vehicle for a coal mine, which comprises a tractor, the rear portion of the tractor is connected with the front portion of a vehicle frame, the lower portion of the vehicle frame is connected with tires, a winding drum driving base is installed on the upper portion of the vehicle frame, a cable winding drum is installed on the winding drum driving base, and the winding drum driving base is used for supporting and driving the cable winding drum to rotate; a cable arrangement device and a mechanical arm are installed on the rear portion of the vehicle frame, and a cable conveyor is installed at the tail end of the mechanical arm. A cable is arranged on the cable drum, the cable penetrates through the cable arrangement device to be connected with the cable conveyor, the cable arrangement device is used for arranging the cable, and the cable conveyor is driven by the hydraulic motor to drag the cable to move. The cable winding and unwinding device has the advantage of improving the cable winding and unwinding working efficiency.

The invention relates to a water surface cleaning ship with a turnover type rear cabin. The water surface cleaning ship comprises a ship body, a collecting device, a storage device and a discharging device. The storage device is located in the middle of the ship body. The collecting device and the discharging device are located at the head and the tail of the ship body correspondingly. The water surface cleaning ship further comprises connecting pieces and first hydraulic oil cylinders, wherein the connecting pieces are located on the two sides of the tail of the storage device, one ends of the connecting pieces are rotationally connected with the storage device through pivots, and the other ends of the connecting pieces are fixedly connected with the discharging device; and the first hydraulic oil cylinders are located on the two sides of the storage device, one ends of the first hydraulic oil cylinders are rotationally connected with the connecting pieces, and the other ends of the first hydraulic oil cylinders are rotationally connected with the corresponding sides of the storage device. When the first hydraulic oil cylinders extend, the discharging device is unfolded towards the outside of the ship body around the pivots; and when the first hydraulic oil cylinders contract, the discharging device is folded towards the inside of the ship body around the pivots and buckled on the storage device. According to the water surface cleaning ship with the turnover type rear cabin, the overall length of the ship can be shortened, and thus the ship can more conveniently turn around, swerve or conduct collecting operation in creek roads; and meanwhile, the structure is simple, and the cost is low.

The invention discloses a vehicle turning auxiliary method and system and a vehicle. The vehicle turning auxiliary method comprises the following steps that a current vehicle speed of the vehicle is obtained, and a current steering angle of the vehicle is obtained; the running state of the vehicle is judged according to the current vehicle speed, the turning direction of the vehicle is judged according to the current steering angle, and the running state comprises the forward state and the backup state; and corresponding vehicle wheels of the vehicle are locked up and controlled according to the running state of the vehicle and the turning direction of the vehicle, and therefore a driver is assisted to complete turning operation. According to the vehicle turning auxiliary method, the corresponding vehicle wheels of the vehicle are locked up and controlled according to the running state of the vehicle and the turning direction of the vehicle, so that the driver is assisted to complete turning operation, accordingly friction or collision caused by human factors in the vehicle turning process is effectively reduced, and therefore the vehicle can make a turn or change the direction conveniently in a narrow zone.

The invention relates to a detection device convenient to adjust and clamp for processing electronic parts for communication. The detection device comprises an equipment box body and a connecting gear, wherein a first motor is arranged below the equipment box body, a first guide rod, a first threaded rod and a guide rail are sequentially arranged in the equipment box body from left to right, a supporting block is fixed at the upper end of a connecting plate, one end of a second motor is connected with a first bevel gear, a first wheel shaft is arranged outside a first rotating shaft, and a limiting fixing block, a storage box, a telescopic opening, a positioning baffle, a collecting opening and a USB expansion block are sequentially arranged at the upper end of the equipment box body fromleft to right. The detection device convenient to adjust and clamp for processing the electronic parts for communication has the beneficial effects that a clamping structure is prevented from being loosened during clamping force adjustment through a spring, the clamping force of the equipment is converted into the telescopic amount of the spring through the spring, so that the clamping force of the clamping structure can be visually measured and adjusted.

The invention discloses a safe device for preventing overweight and car following. The device comprises a main box body, a pressing block cavity with an upward opening is formed in the main box body,a pressing block is connected to the side wall of the pressing block cavity in a sliding fit mode, a plurality of uniformly-distributed pressing block springs are fixedly connected between the lower end face of the pressing block and the lower end wall of the pressing block cavity, an abutting column cavity communicates with the lower side of the pressing block cavity, and the left side of the abutting column cavity communicates with a balance weight cavity; a yellow warning plate and a car-following prevention plate inform a rear car of paying attention to the distance between the rear car and a front car, the phenomenon that parking fee payment is avoided through car following is avoided, when the car following phenomenon is serious, vibration metal violently vibrates under the action ofa cam and a vibration spring, and therefore an alarm is given out through a sound-conduction through cavity; and a right lifting sliding block drives an overweight prompting plate to move upwards toprompt that a vehicle is overweight when the weight of the vehicle exceeds the limit, so that the overweight vehicle is prevented from entering a high-rise parking lot to cause damage to a building.

The invention relates to an embedded mobile greening parking space, and belongs to the parking field. The parking space comprises an embedded moving pallet (100) and a greening loading plate (200), and is characterized in that the embedded moving pallet is composed of an embedded drainage groove, a vertical moving pallet, a horizontal moving pallet, a greening frame, a green frame cover, a slewingbearing, a sliding rail, a sliding block and a sliding rail cover plate. The horizontal moving pallet slides out the greening loading plate and returns to a parking point. The slewing bearing rotatesthe greening loading plate to a certain angle so that a vehicle can move in and out of the greening loading plate conveniently to complete turning. The vertical moving pallet slides the loading plateback and forth to reduce the distance with front and rear vehicles. A greening trough is arranged in the space between a vehicle chassis and the loading plate to increase the greening area. The parking space avoids safety hazards and ensures safety, facilitates stop and U-turning, achieves high efficiency and saves space. The parking space is increased.

The invention relates to a separable hinged-type city bus. A main bus body and an auxiliary bus body are connected through a detachable connecting structure. During the travel peak, the main bus body and the auxiliary bus body are connected together, so that the passenger capacity per time of the bus is improved; and during the non-travel-peak, the auxiliary bus body is detached, and then the main bus body operates independently to carry passengers, thus the utilization rate of the bus is increased, and the problems that the carrying capacity of the bus is insufficient during the travel peak, and resources are waste during the non-travel-peak are solved. Through a hinging structure arranged on the main bus body or the auxiliary bus body, the main bus body or the auxiliary bus body is divided into two sections of bus main bodies capable of mutually rotating in a hinged mode in the horizontal plane, and when the main bus body and the auxiliary bus body are connected together for use, the whole rigid bus main body is divided into two parts capable of mutually rotating in a hinged mode through the hinging structure, the length of the rigid bus main body of the bus is decreased, and accordingly the turning radius of the bus is decreased, so that the bus is more flexible and more convenient when turns and turns round, and can better adapt to the complex road environment. The detachable connecting structure and the hinging structure are located in different positions, so that operation is more convenient when the main bus body and the auxiliary bus body are separated.

The invention relates to a city three-dimensional parking garage and a construction and application method thereof. The city three-dimensional parking garage is characterized by comprising a platformface and multiple ramps. The platform face is erected above the surface of a city road and used for multiple motor vehicles to be parked on; the ramps are connected with the platform face and used fordriving of the motor vehicles. According to the city three-dimensional parking garage, the platform face is arranged above the road and used as a parking space, great convenience is provided for parking and turning-round of people, and the city three-dimensional parking garage is simple in structure, reasonable in design, short in construction period and low in investment and helps to meet the parking demand of people.

Provided is an intelligent early warning device for passenger vehicles and trucks. Vibration sensors are placed at a plurality of vehicle body parts, prizing, knocking and collision are sensed by thevibration sensors, so that cameras placed at a plurality of vehicle body parts take pictures of surrounding scenes, interpretation software analyzes the video content and monitors drowsiness of a driver and perform anti-theft and anti-robbery, vehicle positioning tracking after hijacking is performed, a microphone, a loudspeaker, a lighting lamp, a system controller, a mobile terminal and a display are integrated for control through software, infringement around the vehicle body is monitored, expelling, early warning and an alarm are performed, and safe driving is assisted.

The invention provides a fish scale removing machine for processing of bigheads. A thawing mechanism is arranged on the surface of a fish scale removing tank in a penetrating manner; an operating opening is formed in one side surface of the fish scale removing tank; a transmission mechanism is arranged on the inner wall of the fish scale removing tank; a fish scale removing mechanism is arranged on the inner wall of the fish scale removing tank; one end of the transmission mechanism extends to the inner part of the fish scale removing mechanism; and a fish pond is welded to the inner wall of the fish scale removing tank. The fish scale removing machine relates to the field of the bigheads. According to the fish scale removing machine for processing of bigheads disclosed by the invention, an oblique guiding water current plate is arranged, so that when the bigheads are outputted, water discharged from a circulating water thawing fish box can fall onto the oblique guiding water current plate, then the discharged water passes through a water return pipe, after being filtered in the water return pipe, the discharged water enters the inner part of a circulating water heating temperaturecontrol chamber, so that the effect of reducing the loss of circulating water is achieved, and the problems that in the prior art, the fish scale removing device for the bigheads does not exist, massive labor is needed to remove fish scales, the processing cost is large, and the time consumption is also very large are solved.

The invention provides an ultrafast expressway. According to the ultrafast expressway, automobiles on two lanes can travel at a high speed at a crossroad, the ultrafast expressway is characterized inthat through an east-west direction bridge arranged in the middle of a road and a south-north direction bridge arranged in the middle of the road, the automobiles can travel straight to east, west, south, and north at a high speed, an auxiliary road is additionally arranged on each of the left sides and the right sides of the two lanes, each auxiliary road is a left turn, turn-around and right-turn shared lane, a small-distance left-turn and right-turn shared high-speed lane is additionally arranged on each of the two sides of four turn-around positions I, J, K and L, a right-turn high-speed lane with a certain distance is added beside a left turn lane, a left turn ramp AB and a left turn ramp CD, an outermost lane is arranged as a bicycle and pedestrian sharing lane, and overpasses E, F,G and H are arranged to facilitate rapid passing of bicycles and pedestrians through the road. Therefore, the straight movement is fast, the left turning and the right turning are fast, the turning round is convenient, and the pedestrians and people riding bicycles can pass through the road safely and fast by using the overpasses E, F, G and H.

The invention belongs to the technical field of agricultural machines, and particularly relates to a multi-cylinder small rubber caterpillar tractor. The multi-cylinder small rubber caterpillar tractor at least comprises a cover shell, an engine, caterpillar walking systems and an implement unit, and also comprises a control platform, an agricultural implement hanging frame and a gearbox, whereinthe cover shell is installed on the engine, the back end of the engine is fixedly connected with the gearbox, the lower portions of the two sides of the gearbox are each provided with one caterpillarwalking system, the control platform is installed on the left side of the gearbox, and the agricultural implement hanging frame is fixedly connected to the back end of the gearbox, and is movably connected with the implement unit. By means of the multi-cylinder small rubber caterpillar tractor, the problem that the volume of a common agricultural implement is large is solved, and the implement issmall in volume and capable of cultivating in orchards and greenhouses.

The invention relates to the technical field of rail transportation tools, in particular to a novel vertically parallel dual track transportation tool which comprises upper rails, lower rails and haulage motors, wherein the upper rails and the lower rails are vertically parallel to one another, and each haulage motor is arranged between the corresponding upper rail and the corresponding lower rail; the bottom of each haulage motor is provided with a drive wheel, the drive wheels are supported by the lower rails, the bottom of each haulage motor is further provided with lower guide wheels clamped to the two sides of the corresponding lower rail, the top of each haulage motor is provided with upper guide wheels clamped to the two sides of the corresponding upper rail, and the novel vertically parallel dual track transportation tool further comprises a supporting support for bearing the upper rails and the lower rails.The novel vertically parallel dual track transportation tool has the advantages of being high in speed, high in passenger capacity, portable, fast, convenient, safe, not prone to derail, high in efficiency, small in occupied space, low in noise and the like and is low in building, operating and maintaining cost, it is beneficial to meet the requirement for urban public transportation, by means of a novel urban rail transportation tool layout method, cost can be lowered, space is saved, it is convenient for the haulage motors to turn back, linear expansion in the whole city is achieved easily, and the problem of urban congestion is solved.

An automatic cleaning mopping vehicle with multiple rows of mopping cloth comprises a variable cleaning pool, a shell frame device, a winding mechanism, a rotating wheel, a rotating clamping device, a side clamping device, a guide clamping device, a vehicle body and the mopping cloth. A mopping strip is connected to a thin base plate through canvas. When mopping the floor and transferring the mopping cloth, the upper surface of the mopping cloth is connected with the shell frame. When the mopping cloth are cleaned, the rotating clamping device transfers the first row of mopping cloth in front of the vehicle to the position below the rotating wheel, a hanging clamping device of the winding mechanism hangs the two ends of the mopping cloth base plate, the base plate is wound on the outer circle of the rotating wheel moving out of the cleaning pool, and the two ends of the base plate are automatically fixed. And the lower guide clamping device clamps the third row of mopping cloth and the second row of mopping cloth on the rear side to be sequentially pushed forwards for replacement. And the cleaned mopping cloth are transferred to the third row of mopping cloth to mopping cloth the floor. An operator can quickly take down the cleaned mopping cloth from the mopping vehicle through the handle rod to mopping cloth the floor in narrow areas with many obstacles. The three rows of mopping cloth are used for cleaning and mopping the floor in turn, so that the floor is cleaner, the working efficiency is higher, and the use is more convenient. The mopping vehicle can be a hand-push type vehicle, a driving type vehicle and an unmanned type vehicle.

The invention relates to a water surface cleaning ship with an overturned rear compartment, which includes a hull, a collection device, a storage device and a discharge device, wherein the storage device is located in the middle of the hull, and the collection device and the discharge device are respectively located at the head and tail of the hull , the water surface cleaning ship also includes a connecting piece located on both sides of the tail of the storage device, and one end is pivotally connected to the storage device through a pivot, and the other end is fixedly connected to the unloading device; The other end of the piece is rotatably connected to the first hydraulic cylinder that is connected to the corresponding side of the storage device, wherein when the first hydraulic cylinder is extended, the unloading device is deployed around the pivot toward the hull; when the first hydraulic cylinder is contracted , the unloading device folds into the hull around the pivot, and is buckled on the storage device. The invention can shorten the overall length of the ship, making it more convenient to turn around, turn or collect in small rivers, and meanwhile has a simple structure and low cost.

The invention belongs to the technical field of agricultural machinery, particularly relates to a traction-type longitudinal roller harvesting and picking machine for potatoes, and aims to solve the problems of high labor intensity and low efficiency of manual potato harvesting. According to the traction-type longitudinal roller harvesting and picking-up machine for potatoes, digging, harvesting, picking-up, and boxing of potatoes can be completed only through one-time operation on each ridge. The machine comprises: a longitudinal roller, a roller rotating shaft, a speed reducer I, a motor, a motor frame, a roller frame, a supporting chassis, a main frame, a secondary soil shaking mechanism, a gear I, a gear II, a chain I, a chain II, a gear III, a gear IV, a driven shaft, a digging shovel, a primary soil shaking mechanism, a side face baffle, a driving shaft, a speed reducer II, a suspension device, a potato collecting box, a collecting baffle, and a comb plate. The entire machine is compact in structure and ingenious in design, and can greatly reduce labor intensity and improve harvesting efficiency.

The invention discloses a multimedia-based publicity device, which comprises a main body of the publicity device, a display device arranged on the front surface of the main body of the publicity device, and a telescopic rod arranged at the bottom of the main body of the publicity device. The side surface is fixedly connected with a symmetrical L-shaped block, and the lower surface corresponding to the main body of the propaganda equipment and the L-shaped block is sequentially provided with a limited card slot and a card slot, and the surface of the L-shaped block is threaded with a push threaded rod, so The end of the push threaded rod runs through the L-shaped block and the main body of the propaganda equipment in turn, and the end of the push threaded rod extends to the inside of the limit card slot, and the end of the push threaded rod is fixedly connected to the limit block; The high-transparency protective case can protect the display device when the main body of the promotional equipment is indoors for promotional activities, avoiding damage to the surface of the display device and improving the safety of the display device.