30results about How to "Small operating radius" patented technology

The invention relates to a trepang catching device which comprises a driving device and the like. The driving device comprises storage batteries, an underwater motor control switch and an underwater motor which are electrically connected in sequence. The driving device further comprises a propeller arranged at the rear end of a floating body, wherein the shaft of the propeller is connected with the output shaft of the underwater motor, the floating body is arranged on a floating body frame, and a monitor is connected onto the floating body frame. A rope is connected onto the floating body frame, an anchor body is connected with the rope, and the lower end of the middle of the floating body frame is connected with a foot stepping frame. An inlet is formed in the upper end of a trepang cage, an elastic blocking strip is arranged on the inlet, and the trepang cage is connected onto the floating body frame through a trepang cage lifting rope. One end of a mechanical claw return spring is connected with the rear end of the foot stepping frame, the other end of the mechanical claw return spring is connected with the middle of a manual control mechanical claw, a rod portion of the manual control mechanical claw penetrates through the floating body frame, a handle connected with the upper end of the rod portion extends out the upper end of the floating body frame, a clamping claw connected with the lower end of the rod portion extends out of the bottom end of the floating body frame, and an underwater camera is arranged on the front side of the manual control mechanical claw.

The invention discloses a rapid labor-saving spanner for electric power maintenance, and belongs to the technical field of general tools. The rapid labor-saving spanner solves the defects that in theprior art, the spanner is large in size, incapable of saving labor, low in efficiency and incapable of recovering a bolt nut; the spanner mainly comprises a spanner head, a transmission device and a handle, wherein the spanner head comprises a clamp head and an inserting rod, the transmission device comprises a sleeve, one end of the sleeve is provided with a sleeve inner cavity, the inserting rodcan be inserted into the sleeve inner cavity, a partition plate, a first planetary speed reducing device and a second planetary speed increasing device are fixedly installed inside the sleeve in sequence, and a guide groove is formed in the partition plate; and the guide groove is internally provided with an elastic piece and a rotating shaft, the first planetary speed reducing device comprises afirst sun wheel and a plurality of first planet wheels, a first top plate is installed at one end of the sleeve in a sleeve mode, a second sun wheel is fixedly installed in the middle of the first top plate, and the second planetary speed increasing device comprises the second sun wheel, a rotating cylinder and a plurality of second planet wheels.

Provided are a frost heaving resisting device and a construction method thereof. The device comprises a chassis, a screw rod, a thrust bearing, a hexagon nut, a pushing needle plate, a chain rod, a butt joint rod and an inserting rod. The chain rod is an iron chain rod, and is hinged to a force bearing point of the nut and a force bearing point of the pushing needle plate. The butt joint rod is aniron rod, and is in butt joint with the upper portion of the screw rod through a mortise and tenon structure. The inserting rod is an iron rod, and is inserted into a round hole preserved in the upper portion of the butt joint rod to serve as a force arm to rotate the screw rod. All the parts of the device can be prefabricated, and can be fast assembled on site. According to the construction method, a gasoline portable drill is adopted for drilling a hole in advance, the device is overall placed in the drilled hole, and pushing force for the pushing needle plate is generated through the spiraling of the screw rod, so the pushing needle plate is stuck into the a hole side wall soil body. According to the frost heaving resisting device and the construction method thereof, the construction difficulty of a frost heaving resisting measure, the construction period is shortened, the comprehensive building cost is reduced, and the basic tensile capacity is improved.

The invention discloses a hoisting method and system of a fabricated building monoblock peripheral component. The system comprises a vertical transporting device, a transporting trolley, a vertical steel frame and a horizontal transporting rail. A turnover platform and a moving portion are mounted on the transporting trolley, the transporting trolley can ascend and descend on the vertical steel frame together with the vertical transporting device, the horizontal transporting rail is supported by a triangular truss fixed to a wall, and the vertical steel frame and the horizontal rail triangulartruss can be hoisted along with increase of the building height. The vertical transporting device carrying the transporting trolley can run to the specified height along with a vertical rack, at thismoment, a running rail of the vertical transporting device is connected with a horizontal rail around the floor in a through manner, the turnover platform on the transporting trolley turns over theprefabricated component to the preset angle, then the transporting trolley runs to the designated spot through the horizontal rail, the prefabricated component is hoisted to the position above embedded bars through a moving device of the transporting trolley, precise alignment is achieved, and the prefabricated component slowly falls in; and rapid butt joint is achieved through the novel connecting method, the dry connecting method, and therefore hoisting is completed.

The invention relates to full-automatic accessory spot welding equipment. The full-automatic accessory spot welding equipment comprises a main rack, a feeding assembly, a collection assembly, a paintbreaking assembly, a spot welding assembly, a repainting assembly and an accessory conveying assembly. The feeding assembly comprises a feeding conveying component, a feeding driving component and a discharge component. The paint breaking assembly, the spot welding assembly and the repainting assembly are arranged along the feeding conveying component in sequence. The accessory conveying assemblycomprises a first conveyor belt, a second conveyor belt, a conveyor belt driving component, a first accessory supply component and a second accessory supply component. The first accessory supply component and the second accessory supply component are arranged at the head ends of the first conveyor belt and the second conveyor belt correspondingly. The feeding conveying component is located at thetail ends of the first conveyor belt and the second conveyor belt. The full-automatic accessory spot welding equipment integrates the functions of automatic discharging, feeding, u-bolt feeding, carrying ring feeding, paint breaking, spot welding, repainting and material collecting. The operating radius of personnel is small. The full-automatic accessory spot welding equipment can be operated by asingle person who only needs to place and take materials, ensures the efficiency and safety, facilitates automatic management, reduces the defective rate of products and improves the yield, and the number of the personnel is reduced.

The invention discloses a power generating device utilizing train wind power. A base is included, and a stand column is installed on the top wall of the base; the top end of the stand column is provided with a small wind driven generator; the outer side wall of the top end of the stand column is sleeved with a movable base; the small wind driven generator is installed on the top wall of the movable base; a fixed base is installed on the outer side wall of the bottom end of the stand column; two adjusting rods are arranged between the fixed base and the movable base, and each comprise a threaded pipe and a threaded rod which are in thread engagement; the top end of each threaded rod is fixed to the bottom wall of the movable base; the bottom end of each threaded pipe penetrates through thefixed base and extends to the lower side of the fixed base; and each threaded pipe is rotationally connected with the fixed base through a rotating ring. Due to the technical scheme, the problems thatin the prior art, the wind energy in the train driving process cannot be utilized very well, and the overhead wind energy cannot be sufficiently utilized when no trains run are solved.

The invention relates to a traffic cone grabbing method. The grabbing method includes the steps that after a suction cup sucks or carries a traffic cone, a rear mechanical arm is driven by a power mechanism to rotate forward around the rotation axis of the rear mechanical arm, under transmission of the rear mechanical arm, a front mechanical arm rotates reversely around the rotation axis of the rear mechanical arm, under transmission of the front mechanical arm, a rotary shaft penetrating the front mechanical arm drives the suction cup to rotate forward around the rotation axis of the rotary shaft, and the ratio of the angular speeds of the rear mechanical arm and the front mechanical arm is equal to that of the angular speeds of the rotary shaft and the front mechanical arm. The inventionrelates to the traffic cone grabbing method, linkage cooperative design of the front mechanical arm and the rear mechanical arm is used in the method, the operating radius in the rotation process iseffectively reduced, the traffic cone conducts vertical lifting motion all the time in the grabbing process, and a grabbing effect is guaranteed.

The invention discloses an automatic turnover box type feeding device for a cigarette machine. The automatic turnover box type feeding device comprises a rack, a feeding system, a turnover system andan electric control system, wherein the feeding system, the turnover system and the electric control system are arranged on the rack; the feeding system is used for feeding a tobacco stem packaging carton with an upper-end opening into a turnover frame, turning over under action of the turnover system, and adding cigarette stems in the cigarette stem packaging box into a feeding buffer cabinet; and the feeding system and the turnover system are connected to the electric control system, and work under control of the electric control system. The core of the invention is to provide the automaticturnover type feeding device which can turn over a transported box with cigarette stems, feeds materials into a feeding bin after being turned over by 150 degrees (size of the angle being adjustable),reduces labor intensity, and improves feeding production efficiency.

The invention discloses a vehicle-mounted terminal control method. The method comprises the steps: S1, acquiring a voice instruction of a vehicle driver; S2, recognizing a vehicle-mounted terminal function module corresponding to the voice instruction; S3, establishing communication connection between a universal control module and the vehicle-mounted terminal function module, so that a vehicle driver can adjust function parameters of the vehicle-mounted terminal function module through the universal control module; and the universal control module is a key switch with a physical key or a touch screen with a virtual key, and can repeatedly control different vehicle-mounted terminal function modules. After confirming a vehicle-mounted terminal function module which a driver wants to controlthrough voice recognition; the multiplexing control module is set to be capable of controlling the state of the vehicle-mounted terminal function module. Therefore, a driver can control a plurality of vehicle-mounted system function modules only through the same multiplexing control module, the operation radius of the driver for controlling the vehicle-mounted system can be effectively reduced, the driver is prevented from being distracted excessively when the vehicle-mounted system is operated, and the driving safety and the user experience are improved.

The invention discloses a vehicle-mounted multi-rotor unmanned aerial vehicle remote take-off and landing system which comprises an unmanned aerial vehicle, a command vehicle and a landing preparation point preset at a landing place, the unmanned aerial vehicle is parked on a take-off place command vehicle take-off and landing platform, visual identification panels are arranged on the take-off and landing platform and the landing preparation point, and nested patterns are arranged on the visual identification panels; the unmanned aerial vehicle and the command vehicle are provided with positioning modules for accurate positioning of mutual positions and a wireless data transmission module for keeping mutual communication and data transmission, the unmanned aerial vehicle is further provided with a visual identification module for identifying nested patterns; the unmanned aerial vehicle arrives at the landing place before taking off, and lands after identifying the nested pattern of the take-off and landing platform or the standby landing point on the command vehicle. According to the invention, remote take-off and landing of the unmanned aerial vehicle can be realized, and the unmanned aerial vehicle can accurately land to a landing point through high-precision positioning, so that ground landing of a take-off landing ground is realized, the working radius is reduced, and the working efficiency and safety are greatly improved.

The invention discloses an oval hand wheel ball valve with a self-locking limiting device. The oval hand wheel ball valve comprises a valve body, a valve seat is arranged in the middle of the valve body, a valve ball is arranged in the valve seat, an end face flange is arranged outside the valve ball and the valve seat, an oval hand wheel is arranged above the end face flange and comprises a longshaft and a short shaft, and the oval hand wheel is pressed on the end face flange through a pressing nut and a valve rod. The self-locking limiting device for locking the oval hand wheel is arrangedon the end face flange and comprises a supporting rod connected to the end face flange in an abutting mode, and U-shaped flat steel is arranged at the top end of the supporting rod and wraps the outerside of the oval hand wheel. 1, the operation radius is small, and the installation space is saved; 2, the opening and closing states of the valve are convenient to identify; and 3, the hand wheel isprovided with the self-locking limiting device capable of sliding up and down, so that the required state position of the valve can be locked.

The invention discloses a ditch ecological water treatment method and aims to achieve the objects of high degree of automation, high efficiency, convenience in popularization, low cost, low energy consumption, low maintenance load, high efficiency and the function of overload prevention.. According to the technical scheme, aquatic plant collecting equipment is arranged in a ditch; the eutrophic water body is subjected to plant collection; the collecting equipment comprises a roller body; the roller body comprises a driving shaft, a first telescopic frame, a second telescopic frame connected tothe output end of the first telescopic frame and a plurality of aquatic plant collecting devices arranged at the output end of the second telescopic frame. The first telescopic frame comprises two input ends, which are movably connected and are connected to the driving shaft; shear pins are arranged at the two input ends of the driving shaft and the two input ends of the first telescopic frame. The invention belongs to the technical field of water environment treatment and ecological remediation.

The invention discloses a cyclic hoisting tool and relates to the field of hoisting. The cyclic hoisting tool comprises a supporting part and a hoisting part. The supporting part comprises a base (1) and a first main rod (2) fixed on the base (1), wherein the base (1) consists of two steel plates provided with adjustable bolts (3); the hoisting part comprises a second main rod (4) and a cantilever (5); the second main rod (4) and the first main rod (2) are sleeved for connecting the two parts; the cantilever (5) is circular and is provided with a guide rail; an electric hoist (6) and an electric hoist (7) which are opposite to each other are arranged on the guide rail and can slide on the cantilever (5); steel balls (8) are arranged at a gap between the electric hoist (6) and the electric hoist (7) on the guide rail. The hoisting tool has the advantages that the service range is wide; and the occupied space of the base is small, the operation radius is small, the power outage range is narrowed, and the working efficiency is greatly improved, thereby shortening the power outage cycle.

The invention discloses a self-balancing electric scooter with a swivel wheel. The self-balancing electric scooter comprises a balance scooter frame and power wheels, wherein the power wheels are movably fixed to the balance scooter frame; the balance scooter frame is provided with the swivel wheel; and the power wheels can rotate around the swivel wheel. By virtue of the swivel wheel, the operation radius of the self-balancing electric scooter can be effectively reduced and the handling performance of the self-balancing electric scooter can be further improved, so that the operation of the self-balancing electric scooter can be very convenient and simple. The swivel wheel can also rotate on the own axis of the swivel wheel for steering and cooperate with the power wheels to achieve the in-situ steering operation in the place where the turning radius is relatively small. In addition, the balance scooter frame can effectively balance the self-balancing electric scooter and effectively ensure the balance of the self-balancing electric scooter during the running process, so as to effectively ensure the riding safety of a user.

The invention discloses a ditch ecological water treatment method, aiming to provide a kind of rich water treatment method with the characteristics of high degree of automation and fast efficiency, easy to popularize, low cost, low energy consumption, less maintenance, high efficiency and overload protection. The method for treating nutrient water body, the key point of its technical scheme is to include setting aquatic plant collection equipment in the ditch, and to collect plants from eutrophic water body, the collection equipment includes a roller body, and the roller body includes a driving shaft, a first telescopic frame, A second telescopic frame connected to the output end of the first telescopic frame and a plurality of aquatic plant collecting devices arranged at the output end of the second telescopic frame, the first telescopic frame includes two input ends movably connected, and the first telescopic frame The two input ends of the first telescopic frame are connected to the drive shaft, and the two input ends of the drive shaft and the first telescopic frame are provided with shear pins. The present invention is applicable to the technical field of water environment management and ecological restoration.

The invention discloses a device and a process for producing organic fertilizers through quick fermentation of biomass waste. The device comprises heating equipment and automatic fermentation equipment, wherein the heating equipment comprises a hot blast stove and a hot blast conveying pipeline; the automatic fermentation equipment comprises a control module used for controlling operation of the device as well as a fermentation main unit, and a feeding port and a discharge port are formed in the fermentation main unit; the fermentation main unit comprises a case, a stirring shaft and a drive mechanism, a stirring cavity is formed in the case, the stirring shaft is arranged in the stirring cavity, and the drive mechanism is used for driving the stirring shaft to rotate under control of the control module; a heat conduction cavity connected with the hot blast conveying pipeline is formed in the case; a strain feeding port is formed in the fermentation main unit. The device is assembled by combining integrated fermentation treatment equipment and residue pre-treatment equipment on the basis of agricultural waste microorganism treatment techniques, organic waste produced in bases, cities and factories can be quickly and harmlessly treated and used as fertilizers, and the device and the process are efficient and environment-friendly.

The invention discloses a method and system for hoisting peripheral components of a prefabricated building block, comprising: a vertical transport device, a transport trolley, a vertical steel frame, and a horizontal transport track. The transport trolley is equipped with an overturning platform and a moving part, and the transport trolley can be raised and lowered together with the vertical transport device on the vertical steel frame. The horizontal transport track is supported by a triangular truss fixed on the wall. The vertical steel frame and the horizontal track triangle The trusses can be raised with the height of the building. The vertical transport device carrying the transport trolley travels to the specified height with the vertical rack. At this moment, the running track of the vertical transport device is connected with the horizontal track around the floor. The platform on the transport trolley flips the prefabricated parts to a predetermined angle. , and then drive to the designated position through the horizontal track, and then move the prefabricated parts to the top of the pre-embedded steel bars through the mobile device of the transport trolley, align them accurately, fall slowly, and quickly dock by using the new connection method dry connection method. Thereby the hoisting is completed.

The invention relates to the technical field of logistics sorting, in particular to a high-speed small package overturning machine. The high-speed small package overturning machine comprises an accelerating belt conveyor, a package supplying belt conveyor, an overturning belt conveyor, a cargo receiving belt conveyor and an decelerating sliding groove; and the tail of the accelerating belt conveyor is connected with the head of the package supplying belt conveyor, the tail of the package supplying belt conveyor is located at the input end of the overturning belt conveyor, the output end of theoverturning belt conveyor is located above the input end, the output end and the input end of the overturning belt conveyor are connected through a semi-circular overturning structure, the output endof the overturning belt conveyor is provided with the cargo receiving belt conveyor, and the tail of the cargo receiving belt conveyor is provided with the decelerating sliding groove. Compared withthe prior art, the high-speed small package overturning machine is designed, the overturning through put of small packages is increased, and the pass rate is also guaranteed. The semi-circular overturning structure is adopted, the overturning attitude is basically not affected by the mass of the packages and the gravity center position, when packages pass through the overturning belt conveyor, thelarger the mass of the packages is, the smaller the operating radius of the gravity center is, the packages are tightly attached to a belt better, and thus the pass accuracy rate is guaranteed.

The invention discloses a cyclic hoisting tool and relates to the field of hoisting. The cyclic hoisting tool comprises a supporting part and a hoisting part. The supporting part comprises a base (1) and a first main rod (2) fixed on the base (1), wherein the base (1) consists of two steel plates provided with adjustable bolts (3); the hoisting part comprises a second main rod (4) and a cantilever (5); the second main rod (4) and the first main rod (2) are sleeved for connecting the two parts; the cantilever (5) is circular and is provided with a guide rail; an electric hoist (6) and an electric hoist (7) which are opposite to each other are arranged on the guide rail and can slide on the cantilever (5); steel balls (8) are arranged at a gap between the electric hoist (6) and the electric hoist (7) on the guide rail. The hoisting tool has the advantages that the service range is wide; and the occupied space of the base is small, the operation radius is small, the power outage range is narrowed, and the working efficiency is greatly improved, thereby shortening the power outage cycle.

The invention discloses a new type of self-powered passive answering system whose information can be updated in real time, which belongs to the field of rail transit technology, and solves the problem that the internal information of the passive answerer in the prior art cannot be updated in real time because there is no internal power supply device, thereby As a result, it is impossible to carry out real-time data transmission with the train control system when the train operating conditions and line conditions change, which includes the fan chassis arranged on the passive transponder side, and the passive transponder and the fan chassis are fixed on the On the rail, the fan chassis is provided with an air guide port along the axial side of the rail. One side of the air guide port is provided with a wind turbine, and the wind turbine is arranged in the fan chassis. machine, the generator is connected to the passive transponder through a filter and rectifier circuit.

The invention relates to a sawtooth closed construction method for a cracking furnace area of a large ethylene device, which comprises the following steps of: dividing cracking furnaces which are sequentially mounted side by side into a first construction group with an odd number and a second construction group with an even number, mounting furnace bodies in the first construction group according to the mounting positions of the furnace bodies, and forming sawtooth-shaped intervals among the cracking furnaces; in the second construction group, the furnace bodies are assembled in sections in the prefabrication site, and pipelines on one side or multiple sides of the cracking furnace in the second construction group are installed in the prefabrication site at the same time; pipeline penetration on one side or multiple sides of the cracking furnace in the first construction group is completed; and the second construction group is transported to the construction site from the prefabrication site, and then is installed in place in the sawtooth-shaped intervals formed by the cracking furnaces of the first construction group. After the cracking furnace body of the first construction group is installed in place, a hoisting operation area can be formed between every two furnaces, the operation radius of pipeline penetrating installation is reduced, vertical transportation can be conducted by being matched with an applicable winch, and therefore the construction efficiency is improved.

The invention is suitable for the field of solar street lamps, and provides a convenient-to-maintain new energy environment-friendly energy-saving street lamp structure which comprises a base, the base is detachably connected with a ground pile foundation, a light-emitting plate for illumination is further movably arranged on the base, and the rear portion of the light-emitting plate is connected with a solar panel for supplying power to the light-emitting plate; the rotating assembly is arranged on the base and used for enabling the light-emitting plate to rotate so as to reduce the height of the light-emitting plate when the street lamp needs to be overhauled; the lifting assembly is arranged between the rotating assembly and the light-emitting plate, and the lifting assembly enables the height of the light-emitting plate to be reduced in the process that the rotating assembly drives the light-emitting plate to rotate; and the wind power generation device is arranged at the top of the lifting assembly and electrically connected with a storage battery arranged at the top of the lifting assembly, under the action of wind power, the wind power generation device can transmit electric power to the storage battery, dust removal is conducted on the surface of the solar panel through a cleaning assembly arranged on the lifting assembly, and the maintenance difficulty is reduced.

The multifunctional side-suction and upper-discharge integrated stove comprises a fan assembly, a smoke collecting hood assembly and a main machine, the main machine comprises a stove function module, a steaming function module, a baking function module, a tableware disinfection chamber function module, a rack module and a water supply system, the fan assembly comprises a smoke exhaust pipe seat, and the smoke exhaust pipe seat is provided with an upward smoke exhaust port. Different from an existing side-suction lower-discharge integrated stove, the fan assembly is arranged above the main machine to form the side-suction upper-discharge integrated stove, and the fan assembly does not occupy the internal space of the integrated stove. On the basis of basic configuration of the integrated stove, namely a gas stove and an oil smoke suction and exhaust device, the integrated stove has five functions, at least one more function is provided compared with an existing integrated stove, and chambers with the steaming function, the baking function and the cooking function are independent from one another; the independent cavity is arranged, so that the corresponding functional modules can operate independently or simultaneously, the kitchen space is greatly saved, the operation radius during cooking is reduced, and the efficiency is improved.

An anti-freezing and pulling device and a construction method thereof, the device includes a chassis, a screw rod, a thrust bearing, a hexagonal nut, a push pin plate, a chain rod, and the chain rod is an iron chain rod, which is hinged between the stress point of the nut and the On the stress point of the push pin plate. The docking rod is an iron rod, which is docked on the upper part of the screw rod through a mortise and tenon structure. Inserting rod, the inserting rod is an iron rod, which is inserted into the reserved circular hole on the top of the docking rod as a moment arm for rotating the screw rod. All parts of the device can be prefabricated, and can be quickly assembled on site. All parts of the device can be prefabricated, and can be quickly assembled on site. The construction method uses a gasoline jackhammer to pre-drill the hole, and the device is put into the hole as a whole, and the thrust of the needle plate on the top plate is generated by the helix of the screw rod, so that the push needle plate penetrates into the soil on the side wall of the hole. The invention greatly reduces the construction difficulty of anti-freezing and pulling out measures, shortens the construction period, reduces the comprehensive construction cost, and increases the anti-pullout capacity of the foundation.

The invention discloses a power line inspection control method based on an unmanned aerial vehicle. The unmanned aerial vehicle receives the power line inspection task from the place A to the place B sent by the cloud server, executes the power line inspection task and flies along the inspection path; in the real-time flight process, a power line image on a routing inspection path is obtained through a monocular camera, image preprocessing is carried out on power line image video data obtained by the monocular camera in real time to obtain a binary image, power line detection processing is carried out on the preprocessed binary image, and the power line detection result is obtained. Acquiring a line patrol direction and course deviation to control flight, and performing flight control correction on the unmanned aerial vehicle according to the line patrol direction and course deviation to realize power line patrol flight. The unmanned aerial vehicle can take off and land in different places, the unmanned aerial vehicle is remotely controlled to inspect the power line, the working radius is reduced, the inspection efficiency is improved, and the use of human resources is reduced.

The invention discloses a rapid labor-saving spanner for electric power maintenance, and belongs to the technical field of general tools. The rapid labor-saving spanner solves the defects that in theprior art, the spanner is large in size, incapable of saving labor, low in efficiency and incapable of recovering a bolt nut; the spanner mainly comprises a spanner head, a transmission device and a handle, wherein the spanner head comprises a clamp head and an inserting rod, the transmission device comprises a sleeve, one end of the sleeve is provided with a sleeve inner cavity, the inserting rodcan be inserted into the sleeve inner cavity, a partition plate, a first planetary speed reducing device and a second planetary speed increasing device are fixedly installed inside the sleeve in sequence, and a guide groove is formed in the partition plate; and the guide groove is internally provided with an elastic piece and a rotating shaft, the first planetary speed reducing device comprises afirst sun wheel and a plurality of first planet wheels, a first top plate is installed at one end of the sleeve in a sleeve mode, a second sun wheel is fixedly installed in the middle of the first top plate, and the second planetary speed increasing device comprises the second sun wheel, a rotating cylinder and a plurality of second planet wheels.

The invention discloses an offshore heavy-load low-clearance variable-amplitude crane which is arranged on a ship deck and comprises a single-herringbone frame assembly arranged on a ship stern deck and two inverted-L-shaped suspension arm assemblies arranged on a ship bow deck in the transverse ship direction, and the two inverted-L-shaped suspension arm assemblies are symmetrically arranged relative to the center line of the deck. According to the crane ship, a large amount of deck space can be reserved for later-stage construction through the single-herringbone frame assembly and the double-inverted-L-shaped suspension arm assembly, and the space utilization rate of the deck of the crane ship is greatly increased; meanwhile, the inverted-L-shaped suspension arm assembly is of an asymmetric space truss structure, the dead weight is reduced, and meanwhile the effective hoisting space between the two suspension arms is increased during double-arm hoisting.

The invention provides a traffic cone placing and recovery method. The traffic cone placing process is that a shaping mechanism (3) is lifted in the process that a vehicle advances along a path on which traffic cones are arranged, and a grab mechanism (2) places the traffic cones along the arranging path by adsorbing the traffic cones. The traffic cone recovery process is that the shaping mechanism (3) is lifted upwards when the bottom of the traffic cone falling to the ground faces towards the shaping mechanism (3); a shifting fork (2.11) of the grab mechanism (2) is inserted into the bottomof a cone cylinder of the traffic cone so as to lift the traffic cone upwards; the traffic cone vertically rises to a position beside a top platform surface for operation personnel to fetch; and whenthe head of the traffic cone falling to the ground faces towards the shaping mechanism (3) and after a shaping rod (3.3) of the shaping mechanism (3) props against the upper half part of a base of thetraffic cone in the process of advancing with a vehicle, the traffic cone is turned over and righted by using the contact part of the lower half part of the base of the traffic cone and the ground asa supporting point. The traffic cone placing and recovery method has the advantages of high placing and recovery efficiency and safer and more reliable placing and recovery process.