1443 results about "Traction system" patented technology

System and method for non-invasive lysis of sub-dermal tissue by means of focused ultrasonic energy, the system comprising: a source of ultrasonic energy adapted to operate in continuous wave mode and to focus ultrasonic energy in a focal zone within the sub-dermal tissue, the ultrasonic energy being adapted to induce tissue cavitation in the focal zone; means for continuous displacement of the source over the skin surface; and means for determining a safe speed for the displacement, the safe speed allowing to avoid thermal tissue damage. The source of ultrasonic energy is accommodated in a hand-held applicator including a wheeled traction system powered by an electric drive.

A paving machine may include a power source, a traction system, a hopper configured to contain paving material, and one or more conveyors configured to transfer the paving material from the hopper. The paving machine may also include a screed configured to lay a mat of the paving material. The paving machine may further include at least one front sensor mounted on a front portion of the paving machine and configured to measure height from a surface to the front sensor and at least one rear sensor mounted on the paving machine and configured to measure height from a surface of the mat to the rear sensor. The paving machine may also include a controller configured to determine a thickness of the mat by determining a difference between one or more front height measurements taken by the at least one front sensor and one or more rear height measurements taken by the at least one rear sensor.

A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.

The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I / O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performance indicators of MTC ACC; 3. the I / O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.

A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.

The invention relates to a contact system, power pack and energy storage device hybrid-powered CRH train traction system, which is characterized by mainly comprising a traction transformer, a power pack, an energy storage device, a traction converter and a traction motor, and a contact system is connected with the primary side of the traction transformer through a pantograph, and the two secondary windings of the traction transformer are directly connected with the traction converter; the traction converter is connected with the traction motor, and a diesel engine and a generator form the internal combustion power pack; and the three-phase output of the generator is directly connected with the traction inverter, and the energy storage device is connected with the intermediate DC bus of the traction converter. The traction system can run simultaneously on electrified and non-electrified lines, and can rescue self through power supplied by the power pack and the energy storage device.

A system for controlling the acceleration, deceleration, braking, travel speed, and power assisted steering of a pallet truck, comprising setting a steering system and a traction system performance as a function of a position and rate of change of position of a control arm in a vertical axis and a horizontal axis of rotation.

The invention provides a long-span over loading cable crane and an installation method thereof which relates to a cable crane used in bridge construction and consists of a guy rope tower 1, a cable tower 2, a main cable and a hoisting traction system 3, an anchoring system 4, an electromechanical system 5 and a wind cable system 6. The tower of the cable crane consists of the guy rope tower 1 and the cable tower 2 which is hinged on the top of the guy rope tower 1 and fixedly connected with the bottom of the guy rope tower 1. The invention adopts the techniques of the parallel bearing of a plurality of main cables, the wind cables connected in series, the joint construction of the cable towel and the guy rope tower, etc., thereby greatly improving the loading capability of the long-span cable crane and lowering the manufacturing cost as much as possible. The invention can reduce the influence of the unbalanced horizontal force on the top of the cable tower 2 on the guy rope tower 1 and greatly save the construction cost of the guy rope tower 1. The loading cable crane has strong load-carrying capability, wide loading range and high economic performance.

The invention discloses a power bogie with independent wheels for 100 percent low-floor light rail vehicles. The power bogie with the independent wheels comprises a framework, an axle mechanism, primary springs, secondary springs, secondary vertical and transverse dampers, a double-pull rod traction mechanism, the longitudinal driving mechanism of an elastically frame-suspended motor and a hydraulic brake unit, wherein the side beams of the framework are cantilevers which protrude outward; two short shafts are supported by bearing units and connected with elastic wheels respectively; an axle consists of the two short shafts; two wheels on the same side of the bogie are fixed on a motor-driven shaft; a motor is coupled with two gear boxes; a brake system is integrated with a traction motor; the four secondary vertical dampers are arranged at the four corners of the framework; the secondary transverse dampers are arranged at the two ends of the framework; and a parallel double-pull rod traction system is arranged on the inner side of the framework. The requirement of 100 percent low floor on vehicle bodies is really realized by the high-strength welded framework, the independent wheel axle mechanism, the primary springs and the secondary springs which are rationally structured, the optimal secondary vertical and transverse dampers, the parallel double-pull rod traction device with internal traction, the longitudinal drive of the elastically frame-suspended motor, and the hydraulic brake unit which is integrated with the traction motor.

The invention discloses a movable multi-rotor unmanned aerial vehicle autonomous base station system.The system comprises an autonomous base station terminal (1) and a multi-rotor unmanned aerial vehicle system (2), wherein the autonomous base station terminal (1) comprises a movable wheel undercarriage and traction system (3), an energy conversion system (4), a hangar and foldable parking apron (5) and an electric control communication management system (6), and the multi-rotor unmanned aerial vehicle system (2) comprises a multi-rotor unmanned aerial vehicle platform (7), a multisource navigation system (8), a wireless charging system (9), a data command communication system (10) and an unmanned aerial vehicle autopilot (11).By the adoption of the system, the technical problems of providing wireless charging, task planning, cluster strategy allocation, airborne audio / video data exchange and storage for a multi-rotor unmanned aerial vehicle are solved, and the autonomous collaborative work capacity, cruising ability and data transmission capacity with a ground system of multiple multi-rotor unmanned aerial vehicles are improved.

A motor train unit traction system adopting a catenary and energy storing devices for hybrid power supply is characterized by mainly comprising a traction transformer, the energy storing devices, traction converters and traction motors, wherein the catenary is connected with a primary side of the traction transformer through a pantograph, and two secondary side windings of the traction transformer are directly connected with the traction converters which are connected with the traction motors; and the energy storing devices are connected with direct current buses in the middles of the traction converters. The motor train unit traction system can simultaneously operate on an electrification line and a non-electrification line, and the braking energy is absorbed through the energy storing devices under the working condition without the catenary, so that cyclic utilization of the energy is realized, and a green energy saving idea is reflected. Under special rainy or snowy weather or when the catenary is damaged, the motor train unit traction system has emergency rescue and readiness functions, and the energy storing devices can also be used as portable power sources.

The invention relates to an automatic dynamic testing method for waking up of a full-automatic driving train. The method comprises: S1, a driving end is selected according to a preset sequence; S2, a VOBC makes an application to a ground area controller ZC to carry out dynamic testing; S3, after authorization, the VOBC outputs a forward leap instruction to an AOM; the AOM transmits the forward leap instruction to a current train; and the train executes dynamic testing equipment and a leap instruction feedback command is sent to the VOBC by a TCMS; S4, the VOBC outputs traction information with a preset time length and a preset dimension to the train; and after the speed of the train reaches the zero speed, the VOBC outputs a leap completion mark; S5, the VOBC outputs a backward leap command; and S6, the forward leap result and the backward leap result are normal, dynamic testing of the driving end is done successfully and changing to a driving end at the other side is carried out and the steps from S2 to S6 are repeated. According to the invention, a problem of energy wasting or equipment wearing due to manual operation negligence can be solved, thereby realizing reliable working of a traction system and a brake system of a to-be-detected train.

The invention belongs to the field of oil gas development, and particularly relates to an electric control fluid drive coiled tubing downhole retractor. The electric control fluid drive coiled tubing downhole retractor comprises an upper slip support and traction system, a center slip pipe assembly, a control system and a lower slip support system, wherein the upper slip support and traction system is sleeved on the upper part of the center slip pipe assembly in a sliding manner, and can slide along the center slip pipe assembly up and down; and the control system and the lower slip support system are fixed on the lower part of the center slip pipe assembly. The retractor provided by the invention has the advantages that the control flexibility is better, the retractor is suitable for small hole downhole traction operation, the normal downhole fluid cycle is ensured in a traction process, the flexible winding adaptive ability is strong in the traction process, and the retractor can realize two-way traction; and most of retractors in China only can realize a single direction traction motion, the retractor provided by the invention can smoothly drag a pipe column to realize taking-out and putting-down operations, the flexibility is good, and the retractor can realize effective power-off protection.

The invention relates to an integrally distributing and replacing emergency movable battery replacing vehicle and a battery replacing method thereof, which are used for solving the problem that an electric passenger car can not reach a special concentrated charging power station for replacing batteries due to stoppage (no power of the battery, fault and emergency use). The emergency movable battery replacing vehicle comprises a battery replacing car. A battery storing frame is arranged on the upper front portion of the battery replacing car and adjacent to a trapezoid stand. A traction systemis further arranged on the trapezoid stand. A folded slope is matched with a slope face of the trapezoid stand, the trapezoid stand is hinged with the folded slope, the height of the folded slope ensures that when the folded slope is arranged on the ground, the folded slope is connected with the lower edge of the slope face of the trapezoid stand, and the battery storing frame, the trapezoid stand and the folded slope are distributed horizontally. A battery replacing robot is arranged in front of the trapezoid stand and the battery storing frame and matched with the battery storing frame and the trapezoid stand, and the traction system and the battery replacing robot are both connected with a control system.

A shoulder brace traction system uses a torso fitting part to be worn by a user in combination with an upper arm fitting part to be worn by the user. The upper arm fitting part includes an extension overlay that extends and covers the shoulder cap of the user. The extension overly includes front and rear shoulder straps connected to an intermediate portion of the extension layer. These shoulder straps connect with and / or on the torso fitting part on front and rear portions of the shoulder. The extension includes two further straps adjacent the shoulder cap that engage front and rear central anchors on the torso fitting part. The brace traction system is effective for many athletes and is cost effective to manufacture.

An electric vehicle with a modular frame that includes a main chassis with a rider platform (standing position), front fork / wheel assembly, handlebar assembly, and rear trailing arm assembly with left and right rear wheels. The front fork assembly bolts to the main chassis. The handlebar assembly fastens to the pivoting steer tube of the front fork assembly. The trailing arm assembly bolts to the main chassis and pivots to provide rear suspension for the vehicle. The trailing arm includes a stabilizer bar connecting the right and left trailing arms. Electronics enclosures are integral to the main chassis and are structural members of the vehicle. The battery pack can be installed or removed from the main chassis with a hand-activated latch. The electronics plate contains traction system electronics and is removable from the main chassis. The handle bar assembly includes a folding mechanism.

The utility model relates to a gantry type small circulation traction system for a main cable erection of a large-span suspension bridge, which belongs to the technical field of bridge superstructure construction. Set up a cable storage area behind the A anchorage, and install a 60-ton gantry crane and a cable-laying bracket; set up a traction cable revolving wheel behind this anchorage; set up a 25-ton main traction hoist and a balance weight bracket on the side of the B anchorage. The traction cable is connected by a puller at Anchor Anchor, bypasses the hoist drum at B Anchor Anchor, and is inserted through the balance weight bracket and each steering block to form a ring-shaped endless cable. Make a horizontal circular motion to form an independent small circular traction system. The small circulation system has the advantages of high power, large traction force, high construction efficiency and low cost.

The invention relates to a train speed limitation control method based on a train network system. According to the method, an air braking system and a traction system can send the respective states and fault information of the air braking system and the traction system to a TCMS (Train Control and Management System), the TCMS works out loss (fault) condition of air braking and electric braking through comprehensive analysis, so as to judge the highest speed limit of a train and execute speed limitation in the following two manners: the TCMS sends a speed limitation instruction to a traction control unit through a network bus, and when the traction control unit detects a network bus signal indicating that speed limitation is in need, a corresponding speed limitation mode is carried out to ensure that the train is not overspeed; the TCMS sends a speed limitation mode to be executed to a driver display screen to be displayed so as to mind a driver, and then the driver operates a driver master controller to enter into a corresponding speed limitation mode. The train speed limitation control method is based on the train network control system and has the advantages that speed limitation grades and speed limitation values at all grades can be adjusted according to project characteristics, so the train speed limitation control system has very strong portability and expandability.

The invention discloses a calculation method oriented to single-train running energy consumption of urban rail transit in the field of evaluation of electric traction train energy consumption of urban rail transit. The method comprises the steps of firstly establishing a train traction model by analyzing car performance, line conditions and a signal system, and calculating the instantaneous power and the accumulative energy consumption of a traction system based on the running speed, the running position and the running time of a train; then establishing a train auxiliary system model by analyzing car configuration equipment, and calculating the instantaneous power and the accumulative energy consumption of an auxiliary system based on elements such as rated power and running time; and finally calculating the total running energy consumption of a single train based on traction energy consumption data and auxiliary energy consumption data. The calculation method disclosed by the invention can be used for respectively calculating the energy consumption of the train traction system and the auxiliary system. When train parameters or the line conditions are changed, the train running energy consumption can be more flexibly calculated by using the method.

The invention relates to a construction method of a swivel continuous beam when the existing railway bridges are crossed. The construction method is invented mainly to solve the existing problem that the construction method of bridge swivel can not be adopted when the distance between a pier body and the existing slope toe of the railway is short. The scheme adopted is that a center bearing rotates and a balanced supporting lug keeps stable as supplementary. The center bearing is taken as the swivel system and a swiveling system is arranged between the upper and lower cushion caps; a jack on both sides of a upper turntable is taken as a traction jack, another two jacks are arranged as start and boost jacks; a traction reaction base is arranged on the lower cushion cap, and the traction cable is placed on the concrete tray at the bottom of the upper cushion cap; after the completion of the box beam construction, the traction system is started, the overall formed by the upper cushion cap, pier body and box beam rotates around a hinge pin located in the center of the spherical hinge to get an angle, when the overall arrives at the location, the concrete is used for filling the gap between the upper and lower cushion caps for sealing and fixing the turntable, then the closure section is constructed. The advantage of the construction method of swivel continuous beam for crossing railway bridges is that it can be applied to the continuous box beam's construction when the distance between the pier body and the existing slope toe of the railway is short.

The invention provides a train motion simulation system. Models are used by the simulation system and the models comprise a traction system model, a braking system model, a basic resistance system model, a line system model and a kinematic physical model. Thorough analysis is conducted on internal and external elements that influence a train motion state through the models, results simulated by the traction system simulation module, the braking system simulation module, the kinematic physical simulation module, the basic resistance system simulation module, the line system simulation module and the kinematic physical simulation module according to corresponding simulation models are closer to actual train states and requirements of engineering application. In addition, a train controller model and a corresponding train controller simulation module are added to the train motion simulation system, analogue simulation of controlling of a controller to a train is achieved so that analogue simulation of the train motion simulation system to train operating is closer to actual train states, more intelligent and closer to the requirements of engineering application.

The invention discloses a continuous pipeline tripping device, comprising a rotating drum retracting, laying and releasing system, a guided injection system, a traction system, and a hydraulic power system used for supplying power for the above systems. The rotating drum retracting, laying and releasing system comprises a rotating drum, a cable laying device and a guide rail, wherein the guide rail is fixed on an underpan of a vehicle system, the rotating drum is in a sliding connection with the guide rail through a rotating drum supporting seat, the cable laying device is fixed on one side of the rotating drum, the rotating drum is driven to move along the guide rail by the cable laying device, thereby realizing the arrangement of an oil pipeline on the rotating drum. The traction system comprises a double-arm crane and a flat track frictional transmission device. When the rotating drum rotates, the oil pipeline on the rotating drum passes through the flat track frictional transmission device and a guided injection head in sequence to enter into an oil well. According to the invention, a fast connection with the mouth of the well is guaranteed, the operational process of site construction is simplified, the damage of pipelines is prevented, and the success rate of construction is increased.

The invention discloses a full-bracket track-bogie bearing and moving device and a construction method for installing steel box girders. The device consists of a bracket system, a slideway longitudinal beam system, a splicing platform and a traction system; steel pipe buttresses in the bracket system are fixed on a treated foundation, the slideway longitudinal beam system is arranged on the bracket system, and mainly comprises two-slideway longitudinal beams, each of the two-slideway longitudinal beams is formed by connecting I-shaped rod pieces in an upper-lower parallel connection method, each side of the slideway longitudinal beam system is provided with one two-slideway longitudinal beam, and two two-slideway longitudinal beams are arranged totally on two sides; and berth bogies on the slideway longitudinal beam system slide on berth bogie tracks on the two-slideway longitudinal beams, and the berth bogies adopt a parallel connection mode and share one electric control switch to realize synchronous starting and closing. The bearing and moving device and the construction method have the beneficial effects that advantages of a large machinery hoisting method and a full-bracket jacking and sliding method are synthesized, the influence on ground traffic is less, the construction speed is fast, the cost is low, and the safety is high.

A system for controlling the acceleration, deceleration, braking, travel speed, and power assisted steering of a pallet truck, comprising setting a steering system and a traction system performance as a function of a position and rate of change of position of a control arm in a vertical axis and a horizontal axis of rotation.

The invention provides a train jump control method, a dynamic testing method and a jump benchmark parking method under an FAM (Full Automatic Mode). The jump control method comprises the following steps: an ATP transmits a jump instruction to an ATO, delays for T1 and then synchronously transmits a direction instruction to the train and the ATO; the train receives the direction instruction, then finishes jump preparation and transmits an effective feedback of the direction instruction to the ATO; the ATO receives the direction instruction and the effective feedback, delays for T2 and transmits a traction instruction to a train traction system; the ATO delays for T3, then transmits an instruction carrying a preset traction level to the train traction system, enables the train traction system to output a traction force and enables the train to jump; after jump distance reaches preset distance, the traction instruction is ineffective, and the traction level returns to zero; the ATO delays for T4, then transmits a braking instruction carrying a preset braking level to a train braking system, enables the train braking system to output a braking force, and enables the train to slow down and stably stop; after the train stably stops, the ATO delays for T5, then transmits jump finishing information to the ATP, and enables the ATP to determine the finishing of the jump. Based on the jump control method of the train, a dynamic testing result is more accurate, and jump benchmark parking is more precise.

The invention relates to a high-voltage SiC solid-state transformer based high-speed rail locomotive AC-DC-AC traction system, in particular to a solid-state transformer based locomotive AC-DC-AC traction system and method. Solid-state transformer modules made of SiC materials are adopted, and input sides of the transformer modules are in series connection while output sides are in parallel connection to form the high-speed rail locomotive AC-DC-AC traction system. Compared with traction transformers made of conventional semiconductor materials, solid-state transformers made of the SiC materials have the advantages that due to good power handling capability and frequency capability of the transformers, size and weight of the transformers can be reduced, load weight of a locomotive is reduced greatly, and good economical efficiency is realized; the input sides are in series connection while the output sides are in parallel connection, so that the high-speed rail locomotive traction system is easy to expand, the locomotive can be kept in normal operation within a period of time if the secondary edge of one solid-state transformer module has loss, and accordingly reliability is improved.

This invention relates to an outdoor equipment unit such as a walk-behind skid steer loader. The loader has a tracked traction system in which endless tracks are entrained around a rear drive support member and a front support member. The front support member is spring biased forwardly, but can move rearwardly against the spring bias to allow debris that is caught between the front support member to clear itself to help prevent the track from untracking. A single control handle having front and rear hand grips located between a fixed grab bar can be rotated and / or twisted to control the traction system. Return to neutral systems ensure that the control handle will return to a centered, neutral position upon release of the control handle by the operator.

A kit and method for converting a locomotive from a first configuration to a second configuration having a different operational capability. The kit includes a traction assembly including a mechanical subassembly configured to mechanically couple a first axle of a truck to a traction system of the locomotive; and an electromotive subassembly configured to electromotively couple the first axle to the traction system of the locomotive via the mechanical subassembly. When the kit is installed in the locomotive, the locomotive is converted from the first configuration having the first axle uncoupled from the traction system and a second axle of the truck coupled to the traction system to the second configuration having the first axle coupled to the traction system and a second axle coupled to the traction system.

Power system and method for providing electrical power are provided. The system includes a traction system and auxiliary equipment coupled to a power bus. The traction system includes one or more electromotive machines having a first type of stator winding that provides protection relative to voltage spikes expected at the traction stator under a first voltage level appropriate for the traction system. The auxiliary equipment includes one or more electromotive machines having a second type of stator winding that provides protection relative to spikes expected at the auxiliary stator under a second voltage level lower than the first voltage level. Inverter circuitry is coupled to drive the auxiliary equipment, and signal-conditioning circuitry is provided to attenuate voltage spikes produced by the inverter circuitry. The power bus is operated at the first voltage level, and the voltage spike attenuation is sufficient to protect the auxiliary stator.