1548 results about "Towing" patented technology

The invention provides a method and system for measuring resistance in an underwater vehicle towing test, and relates to the technical field of underwater vehicle hydrodynamic performance testing, and the method comprises three links of gravity center adjustment, measurement data processing and uncertainty analysis. Firstly, it is ensured that the gravity center and the buoyancy center of a test model are consistent in height, model attitude stability is ensured, and resistance measurement errors caused by attitude changes are eliminated. Secondly, measuring the sailing resistance of the test model in the towing test, and post-processing the measured data to obtain the total resistance coefficient of the test model at the test temperature; and finally, quantizing errors of each link and synthesizing expansion uncertainty by adopting a deviation limit and precision limit combined uncertainty analysis method. Compared with a traditional single-index evaluation method, the method not only can reveal error sources and quantify the influence of each link on the measurement result, but also can accurately reflect the composite effect of errors, and ensures the reliability of the resistance measurement result.

Disclosed is a multifunctional stable winch hook guide rail system. The system includes: a storage buckle; a guiding groove, where the guiding groove is formed on a front face of the storage buckle, a movable opening is formed on a back face of an inner wall of the guiding groove, and a winch hook is arranged inside the guiding groove; a hanging opening, where the hanging opening is located at a top of the winch hook at a position close to one end thereof, a side of an inner wall of the hanging opening is fixedly connected to a connector, an outer surface of the connector, through an insertion pin, is rotatably connected to a movable buckle. The winch hook can be easily tightened and securely locked in the guiding groove. The winch hook has a uniform and clean appearance and is used for rescue and heavy-duty towing tasks.

A control system for a towed object (1, 6; 20; 30; 50) in or on a body of water comprise one or more towing members (3) extending between the object (1) and a towing vessel (2). One or more ballast members (4) are movably connected to a respective one of said one or more towing members (3) and controllably movable at least a distance along its respective towing member. The towed object (1) may be controlled by moving one or more ballast members (4) on a towing member (3) in order to control the catenary (c) of a towing member (3). Individual ballast members (4) may be manipulated individually in order to correct, preserve or otherwise change the geometry of a trawl.

A floating object cleanup device includes a collection vessel, two towing vessels with built-in power systems, and two intercepting arms. The collection vessel and the two towing vessels are hooked together by the two intercepting arms. Each of both sides of the collection vessel is provided with an intercepting arm tightening assembly and an arm supporting member. The intercepting arm tightening assembly includes rotating shaft sleeves, positioning blocks, a rotating shaft, and tightening arms. Multiple rotating shaft sleeves are fixed to positions, adjacent to the top, on a side surface of the collection vessel through the positioning blocks. The rotating shaft penetrates all the rotating shaft sleeves located at one side of the collection vessel, and an elastic member is positioned at a position where the rotating shaft contacts with the rotating shaft sleeve.

The invention relates to a method for calculating the towing stability of an underwater towing system. The method comprises the following steps: establishing stability calculation of the underwater towing system by considering the influence of a towing cable, unifying calculation under coupling of a horizontal plane and a vertical plane, analyzing and judging the stability based on characteristic values, and performing design improvement based on characteristic vector judgment. According to the method, the dragging stability of the underwater dragging system can be calculated and used for evaluating the dragging stability of the underwater dragging system, the stability of different parameters of the dragging system is calculated through the method, system optimization is achieved, the dragging stability is improved, and the specific requirements of some dragging systems for tension, position and posture are met.

According to the caisson wharf and the construction method thereof, a layered structure of a steel slag-rubber particle composite lower layer and a regenerated resin-basalt fiber composite upper layer is adopted for a base, and interface bonding is enhanced in combination with a silane coupling agent; the foundation bed is assembled by precast concrete modules and is poured by nano mortar; the caisson main body is provided with a positioning plate which is inserted into the guide groove, the caisson main body is filled with multi-graded steel slag fragments, and an independent airbag cavity is pre-buried in a bottom plate; the buoyancy control system dynamically adjusts the water injection rate based on multi-sensor data; the ecological permeable pipeline network adopts a diatomite-zeolite coating; the prestressed steel strand towing system is regulated and controlled in real time through the friction damper. The caisson wharf and the construction method thereof have the remarkable advantages in the aspects of structural stability, ecological friendliness, construction efficiency, intelligence and automation, the problems existing in a traditional caisson wharf can be effectively solved, and the requirements of modern port construction are met.

A relative angle detection device for a combination vehicle, the relative angle detection device being used in the combination vehicle in which a towing vehicle and a towed vehicle are connected by a towing-side connecting member and a towed-side connecting member. The relative angle detection device includes an imaging device that captures an image of one of the towing vehicle and the towed vehicle from the other, a radiation device that emits marker light to a position where the image is to be captured by the imaging device, and an image analysis device that analyzes the image captured by the imaging device to detect a relative angle of the towed vehicle with respect to the towing vehicle.

The invention relates to a towed towed buoy array positioning device and method. The towed towed buoy array positioning device comprises a towed mother ship, and a deck unit is fixedly installed on the towed mother ship; the system further comprises a plurality of dragging buoys which are connected in series through ropes and form a dragging buoy array, the dragging buoy located at the foremost end is connected with the dragging mother ship through the rope, and the whole dragging buoy array is dragged by the dragging mother ship on the water surface to sail. The dragging buoy located at the tail end is arranged in a transverse offset mode, complex installation and calibration are not needed before use, and laying and recycling are convenient; the acoustic measurement sensor is always kept far away from a mother ship and is less interfered by ship body noise, so that the acoustic positioning calculation precision is greatly improved; according to the device, accurate positioning of deep towing is achieved based on the spatial distance intersection positioning principle, the base line of the acoustic measurement sensor array is long, the accuracy advantage of long base line positioning is achieved, no positioning tracking ship is arranged in the method, and compared with a double-ship positioning method, the manpower and material resource cost is reduced through the method.

A steerable towing hook device includes a towing ball body and a towing arm. The towing ball body includes a towing ball and a towing ball mount. The towing arm includes a hitch arm and a fixed arm, and the fixed arm is provided with a square steel configured to connect to a vehicle receiver. The towing ball mount is fixedly connected to an outer back of the hitch arm. The hitch arm is provided with a moving-steering device configured to move and steer the towing ball mount, and the hitch arm is snap-fitted the fixed arm through the device for moving and steering the towing ball mount. A steerable towing hook device with a rational structure and strong practicality enables the towing ball body to move back and forth to steer, adjusts a position of the towing hook flexibly, is convenient to use, and improves work efficiency.

The invention discloses a compressor unit of a compressor station, a control method of the compressor unit, a medium and a program product, relates to the technical field of compressors, and aims to solve the problem of resource waste during test dragging of the compressor unit of the compressor station. The compressor unit of the compressor station comprises a compressor; an inlet valve; an outlet valve; one end of the inlet bypass pipeline is connected to one side of the inlet valve, and the other end of the inlet bypass pipeline is connected to the other side of the inlet valve; an inlet bypass valve is arranged on the inlet bypass pipeline; after the purging operation included in the warm-up mode is executed, the inlet bypass valve is controlled to be opened, the inlet valve is controlled to be closed, and the outlet valve is controlled to be closed, so that the compression pipeline is inflated through the inlet bypass valve; the compression pipeline is a pipeline between the inlet valve and the outlet valve; under the condition that the pressure of the compression pipeline reaches a first set pressure value, the warm-up operation included in the warm-up mode is executed; the first set pressure value is lower than a second set pressure value corresponding to the compression pipeline in the starting mode.

This invention provides a reciprocating traction system, comprising two sets of longitudinal double-line reciprocating traction systems and one set of horizontal double-line reciprocating traction systems mounted on one side of an anchorage; the two longitudinal double-line reciprocating traction systems are respectively mounted on the upstream and downstream sides, and the horizontal double-line reciprocating traction system is connected to one end of the two longitudinal double-line reciprocating traction systems; the horizontal double-line reciprocating traction system includes a first towing track, a second towing track, a first horizontal traction mechanism, a second horizontal traction mechanism, and a horizontal traction machine; the first and second towing tracks are staggered; this invention can achieve the turning of the main cable strands without the need for a tower crane, reducing the construction period and labor costs associated with tower cranes, and the invention has low tonnage requirements for the horizontal traction machine of the main cable strands, which can reduce equipment investment costs; the method of this invention can achieve simultaneous turning and traction of two main cable strands, improving traction efficiency.

The invention relates to the technical field of computers, discloses a method and a device for determining an overnight flight dragging plan, and aims to solve the problems of low efficiency, high labor cost and relatively poor accuracy of an existing method. The scheme mainly comprises the following steps of: determining flight information of each overnight flight, agency company information of each dragging agency company and machine position information of each available machine position; generating an initial dragging plan set comprising a plurality of dragging plans, determining dragging plan information of each dragging plan, and defining a dragging identifier; constructing a target function which takes the dragging identifier as a decision variable and takes the bridge approaching rate as an optimization object, and constructing constraint conditions according to the flight information, the agent company information, the aircraft position information and the dragging plan information; and solving the target function to obtain the value of each dragging identifier, and generating a final dragging plan set needing to be executed. The method improves the accuracy of the dragging plan, improves the determination efficiency, reduces the labor cost, and is especially suitable for large airports.

The invention relates to the technical field of test conveying, in particular to a conveying device for cable festoon test equipment, which comprises an assembly cross beam, a horizontally arranged bottom guide rod is arranged below the assembly cross beam, and the outer side of the bottom guide rod is movably sleeved with a plurality of external assembly frames. According to the conveying device for the cable festoon test equipment, the electric trolley is connected with one end of a cable for dragging, the cable is hoisted and supported through the external assembly frame on the outer side of the bottom guide rod, the hoisting state of the cable is simulated, and operation and control are very convenient; the electric control type regulation and control locking device is movably assembled in the bottom storage adjustment frame at the lower end of the electric trolley, storage and limiting adjustment can be conducted on the external assembly frame, the adjacent positions of the external assembly frame at different positions can be changed through the electric trolley, manual adjustment is not needed, operation is easy and convenient, and control is accurate.

[Problem] To facilitate passing of a probe through two or more guide plates. [Solution] Provided is a probe passing method for a probe card 1 in which two guide plates 301, 302 are spaced apart from each other, and a probe 50 is passed through two guide holes 311, 312 respectively formed in the two guide plates 301, 302, the method comprising: a step for passing a towing rod 60 through the two guide holes 311, 312; a step for separably linking the tip-end of the towing rod 60, having passed through the two guide holes 311, 312, to a linking portion 510 provided at the tip-end of the probe 50; a step for pulling the towing rod 60 out of the receiving two guide holes 311, 312, and passing the probe 50 through the two guide holes 311, 312; and a step for separating the towing rod 60, having been pulled out of the two guide holes 311, 312, from the probe 50.

The invention discloses a towing operation system and method. The system comprises a towing winch and an anti-loosening device which are arranged on a lower deck in a cabin, and a cable guide device, shark pincers, a stern limiting pin, a height limiting device and a swing stopping device which are arranged on an open-air upper deck; a steel cable and a rope guider are arranged on the towing winch; the anti-loosening device is used for enabling the steel cable to always keep certain tension under the condition that the cable end is not loaded; the cable guiding device comprises a pulley, a pressing wheel and a protective cover, the protective cover covers the cable outlet hole and the pulley, and during operation, the steel cable upwards penetrates out of the cable outlet hole, then bypasses the top of the pulley downwards, penetrates out of the rear side hatch and then bypasses the bottom of the pressing wheel; the height limiting device is used for limiting the height of the point position of the steel cable at the shark pincers; and the oscillation stopping device is used for stopping oscillation of the steel cable. According to the system, the height of a steel cable outlet point can be lowered, water can be prevented from leaking into a cabin from waves on an upper deck, a cable outlet hole is protected against wind and rain, the steel cable can be prevented from being disordered and being scratched with a stern A-shaped frame, and a buoy or a towed ship can be safely replaced under the condition that the steel cable is not unloaded.

A method for controlling a vehicle train, having a towing vehicle and at least one trailer vehicle. The towing vehicle includes a continuous deceleration device for performing a continuous deceleration. The method includes the steps: determining a trailer mass of the trailer vehicle in the prevailing vehicle configuration of the vehicle train; determining a towing vehicle trailer mass of the towing vehicle in the prevailing vehicle configuration; determining a mass ratio of the prevailing vehicle configuration based on the trailer mass and the towing vehicle mass; and limiting a maximum permissible continuous deceleration power of the continuous deceleration device based on the mass ratio. A driver assistance system is configured to perform the method. A commercial vehicle includes the driver assistance system. A computer program product is configured to perform the method.

The invention relates to the technical field of detection towed body release, in particular to an emergency release device of an underwater towing system. The underwater towing system comprises a depth-keeping towed body and a detection towed body, the detection towed body and the depth-keeping towed body are connected through a photoelectric composite cable, the photoelectric composite cable is composed of a towing cable and a communication cable, and the communication cable is connected with a detection instrument in the detection towed body through a plug connector male head and a plug connector female head which are mutually plugged; the emergency release device is arranged at one end in the detection towed body and comprises a towing cable release mechanism and a communication cable release mechanism; the driving piece drives the trailing cable releasing mechanism to be separated from the trailing cable and drives the communication cable releasing mechanism to be separated from the communication cable; the emergency release device is suitable for releasing the detection towed body in an underwater towing system, depends on a mechanical transmission structure, is stable and reliable, and can realize autonomous separation of the detection towed body when an emergency situation or communication loss occurs, so that the safety and the recovery rate of the detection towed body are improved, and the potential heavy loss is reduced.

The invention discloses a semitrailer battery energy transmission system and method based on an electric traction vehicle, belongs to the technical field of battery energy transmission, and aims to solve the problems that in the prior art, energy supply for a semitrailer is inconvenient, the actual transportation effect of the semitrailer is affected, and the transportation cost is increased. The system comprises an electric tractor and a semitrailer, the electric tractor is provided with an optical coupler, the electric tractor is provided with a traction seat and a first battery, the optical coupler is electrically connected with a control device, an ECU control unit and a vehicle end interface, the ECU control unit is electrically connected with a display, and the control device is provided with a plurality of control assemblies; the second battery is charged through the first battery, so that energy supply for the semitrailer is facilitated, the problem of insufficient energy of the semitrailer can be effectively solved, the transportation problem caused by insufficient energy of the semitrailer in the driving process is avoided, the logistics transportation efficiency is improved, and the logistics cost is reduced.

The invention belongs to the technical field of welding platforms, and particularly relates to an immersed tube overwater welding operation platform which comprises a floating box, a welding supporting mechanism and a plurality of pipeline locking mechanisms, and the inner wall of the floating box is divided into nine air floating chambers through partition plates. The pipeline can float on the water surface to complete welding butt joint, butt joint of pipelines of different lengths is adapted, and the quality efficiency is guaranteed by monitoring the inclination state of the floating box and the welding platform in real time and adjusting the balance weight to prevent tipping and create a stable welding environment; stable fixed tension is provided, wind power and water flow influences are resisted, position deviation is prevented, reverse compensation force can be provided in cooperation with a propeller when large driving force is applied in one direction, fatigue damage of a traction rope due to continuous impact force is avoided, rapid water supply and drainage of the buoyancy tank are achieved, water is rapidly injected to increase the overall weight when large impact force is applied, and the tensile force of the traction rope is improved in a matched mode; the water flow pushing efficiency is reduced, the resistance stability is improved, and the positioning effect is optimized.

A fairing saver is a device to protect aerodynamic fairings on a semi-truck from damage while it is being towed backwards. The device utilizes two (2) pairs of clamp style locking pliers. However, in lieu of conventional jaws, each jaw surface on the present Fairing Saver consists of a hard plastic pad, each measuring three inches (3″) by six inches (6″). These pads are backed by a steel plate which also provides a pivoting pin that attaches the pad to the pliers. These pliers are then attached to the fairing surfaces of the truck. An attachment clip, welded to each of the pliers, is then used with a ratchet strap or turnbuckle, to keep the sides of the fairing from moving about during the towing process. The locking plier nature of the device means that it can adapt to any thickness of fairing and locks in place with the ultimate in holding power.

A transmission arrangement for a drivetrain of an agricultural towing vehicle includes an input shaft, an output shaft, a transmission device, a transmission unit, and an electric machine. The transmission device includes a mechanical transmission branch and a variable transmission branch with a magnetic-electrical epicyclic transmission stage having an internal rotor, an external stator, and an interposed rotatable magnetic modulation ring being rotationally conjointly connectable to a clutch drive shaft. The transmission unit is arranged downstream in the power flow and includes a first clutch and a second clutch connected to the clutch drive shaft and at least four gear sets for establishing at least four gear ratio stages. The electric machine is coupled to the input shaft and configured to transmit electrical power to the external stator, which is configured to rotate the modulation ring.

The emergency towing device of the LNG fuel transport ship is arranged on an upper deck and a second deck, a mounting seat is welded to the axis of a ship body of the upper deck, the mounting seat is fixedly connected with a chain stopper through a bolt, a first cable guide hole is welded to the axis of the ship body of the upper deck, and an anti-friction chain is connected to the middle of the chain stopper in a penetrating mode. A first storage box is arranged on one side of the upper deck, a crane is welded to the position, between the first fairlead and the first storage box, of the upper deck, a winch is welded to the axis of the second-deck ship body, a towing pile is welded to the axis of the second-deck ship body and located behind the winch, a second fairlead is welded to the axis of the second-deck ship body, and a second fairlead is welded to the axis of the second-deck ship body. And a second storage box is arranged on the second deck on one side of the second fairlead, a winding drum is installed in the second storage box, the winch is rotationally connected with a retrieval rope, and one end of the retrieval rope is fixedly connected with a towing rope. The utility model has the characteristics of strong maneuverability and convenience in operation.

The invention relates to the technical field of offshore wind turbines, in particular to an installation and recovery method of a submersible mud floating type offshore wind turbine system. The method comprises the following steps: S1, mounting stage of wet-mopping auxiliary units: mounting at least two wet-mopping auxiliary units on the periphery of the submersible mud floating type offshore wind turbine; s2, the transportation stage of the wet dragging auxiliary units, wherein a tugboat is fixed to two of the wet dragging auxiliary units through a dragging cable, and the water filling and discharging amount of each buoyancy compartment is controlled through an air-water replacement valve in the transportation process; s3, a dismounting stage of the wet mopping auxiliary units: after a destination is reached, power sources and control sources of all the wet mopping auxiliary units are closed, and fixation of the submersible mud floating type offshore wind turbine and the wet mopping auxiliary units is relieved; s4, the installation stage of the submersible mud floating type offshore wind turbine; S5, the recovery stage of the submersible mud floating type offshore wind turbine; and S6, the steps S1 to S3 are executed repeatedly. According to the technical scheme, the problem that a traditional wet mopping mode is limited in operation under severe sea conditions can be solved, installation is easy and convenient, and cost is low.

The invention discloses a lifting device and method for storage and transfer of an airship pod, and relates to the technical field of storage and transfer of airship pods.The lifting device comprises an upper bracket, two lifting driving assemblies, a middle support, a damping spring, a base, four wheels and a traction rod; through the modular truss structure design, the bearing capacity and the lightweight requirement are both considered; a multi-dimensional vibration reduction system is formed by the vibration reduction springs which are arranged horizontally, longitudinally and transversely and the soft rubber buffer cushion, and the structure and function integrity of the pod in the storage and transfer process can be effectively protected by matching with the flexible moving and locking functions of the universal wheels with brakes; the lifting driving assembly adopts worm and gear transmission to achieve stable lifting and + / -15-degree pitch angle adjustment, an operating hand wheel designed in an ergonomic mode is combined, electric drive is matched, and the requirement for precise adjustment and control of pods is met. And the operation efficiency is greatly improved through the quick disassembly and assembly design of the positioning and fixing assembly and the traction rod.

The invention relates to a self-adaptive hook stabilizing device for a deep sea active heave compensation crane, which is characterized in that two symmetrically arranged towing winches of a hook stabilizing system are connected with a lifting hook, the hook stabilizing system acquires angle, displacement and tension signals of cables of the two towing winches in real time through a sensor, and the signals are input into a self-adaptive controller; the self-adaptive hook stabilizing system effectively inhibits three-dimensional swing of the lifting hook by monitoring and adjusting the state of a rope of a towing winch in real time, so that accurate positioning of the lifting hook in the operation process is ensured, and the overall working efficiency and the stability of the lifting hook are improved; through the design of the device, the stress of the lifting hook can be balanced, the risk of cable winding is reduced, and potential safety hazards caused by improper movement of the lifting hook are reduced, so that the life safety and property safety of workers are guaranteed; the self-adaptive hook stabilizing system is combined with an automatic control technology, through dynamic adjustment and real-time feedback, self-optimization can be carried out under different operation conditions, the operation efficiency and flexibility of the system are improved, and the self-adaptive hook stabilizing system adapts to more complex operation environments.

The invention relates to the field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle control method and system for paraglider traction and an unmanned aerial vehicle. According to the control method and system and the unmanned aerial vehicle, the unmanned aerial vehicle is controlled to horizontally fly in front of the paraglider; acquiring relative positions of the unmanned aerial vehicle and the paraglider in the air; the height direction offset of the unmanned aerial vehicle and the paraglider is obtained through the relative positions of the unmanned aerial vehicle and the paraglider in the air; setting an offset threshold value, comparing the offset in the height direction with the offset threshold value in real time, and obtaining a comparison result; according to the comparison result, when the offset of the unmanned aerial vehicle and the paraglider in the height direction is larger than the offset threshold value, the unmanned aerial vehicle is controlled to ascend and descend so as to adjust the height. By controlling the relative height of the unmanned aerial vehicle and the paraglider, the paraglider can obtain the maximum horizontal traction force provided by the unmanned aerial vehicle, the traction efficiency of the unmanned aerial vehicle is improved, and the load of the unmanned aerial vehicle is minimum under the condition that the same traction force is provided.

The invention relates to the technical field of compressors, in particular to a series-connection automobile towing compressor system and an automatic surge control method. The series-connection automobile towing compressor system comprises a plurality of stages of automobile towing compressors, a plurality of temperature reduction devices, a bypass return valve, a plurality of temperature reduction adjusting valves and a plurality of orifice plate flowmeters. The problems that in the prior art, cost is high, energy consumption is large and the control effect is not ideal are effectively solved, the multiple stages of automobile dragging compressors are arranged in series and matched with the temperature reducing device and the bypass backflow valve, effective circulation and temperature control of media are achieved, cost of independently using a surge backflow valve in the prior art is reduced, and meanwhile the control effect is good. Through the arrangement of the vortex shedding flowmeter, the pressure sensor, the temperature sensor and the rotating speed sensor, the inlet flow, pressure, temperature and rotating speed of each stage of compressor are accurately measured, in combination with theoretical surge pressure ratio calculation, the surge risk is pre-judged in advance and automatically controlled, and energy consumption increase caused by premature intervention of a bypass return valve at the low rotating speed is avoided.

The invention discloses a sampling device for water environment monitoring, and relates to the field of sampling equipment.The sampling device comprises an installation support fixedly installed on a monitoring ship body, and further comprises a supporting assembly installed at the top end of the installation support, the supporting assembly comprises a suspension beam and an adjusting mechanism, and one end of the suspension beam is rotationally connected with the top end of the installation support through a rotating shaft A; one side of the suspension beam is connected with an adjusting mechanism for driving the suspension beam to rotate around the axis of the rotating shaft A. The sampling assembly is mounted at the bottom of one end, away from the mounting bracket, of the suspension beam; according to the sampling device for water environment monitoring, the sampling assembly is dragged through the traction assembly, the depth of the sampling assembly can be accurately calculated by measuring the inclination angle and the winding and unwinding length of the traction rope even when water flow is urgent, meanwhile, the arranged tail wing enables the traction rope to incline in the water flow direction, and the sampling effect is improved. Calculation errors caused by the fact that the inclination direction is different from the rotation direction of the guide cylinder are avoided, and the sampling precision and the practical performance are improved.

The invention provides a test method and device for a truck formation control system, and the method comprises the steps: obtaining vehicle control information corresponding to a simulation traction truck and a simulation following truck in a tested truck formation control system, the vehicle control information is generated based on each tested controller device in the tested truck formation control system; and based on the vehicle control information and the truck formation control system simulation test scene, carrying out simulation test on the tested truck formation control system to obtain a test result corresponding to the tested truck formation control system. Real vehicle testing is replaced by a hardware-in-the-loop simulation environment, complex and changeable traffic scenes are accurately reproduced, it is ensured that the performance of the truck formation control system is verified under various conditions, the testing efficiency is improved, meanwhile, safety risks are effectively avoided, and the safety of testing personnel and equipment is protected.