2865results about "Tractor-trailer combinations" patented technology

A system a first mobile body configured to support a turbine engine and an auxiliary skid communicatively and fluidly coupled to the turbine engine. The auxiliary skid includes one or more interconnects configured to support a turbine engine component. The system also includes a second mobile body configured to support a generator. The first and second mobile bodies are configured to align a removable coupling between the turbine engine and the generator.

The invention discloses a power supply semi-trailer of electric drive fracturing equipment. The combination manner of a gas turbine engine, a power generator and a rectification unit is adopted, the power generator directly transmits the winding form and voltages needed by a rectification unit, conventional rectification transformer equipment is omitted, the rectification unit is connected with inversion units through common direct current buses, the common direct current buses can drive the multiple inversion units separately, and wiring of power supply circuits is reduced. The high-voltage inversion units are arranged on a gooseneck of the electric drive semi-trailer, and the space arrangement of the equipment is optimized. The whole power supply equipment is more compact in structure, small in occupied area and simple in wiring.

The present invention helps a driver steer a vehicle while backing up a trailer. A trailer being pushed wants to turn around and be pulled (i.e., to jackknife). To compensate for this instability, the driver must skillfully control his steering to cause the trailer to alternately move to be pulled from the opposite side thereby repeatedly crossing the centerline of the pushing vehicle. The moment when the trailer crosses this centerline is the moment of greatest instability and the position in which the driver would most desire to have the trailer travel. A pointer indicates in what direction the trailer is presently being directed; to backup the trailer, the driver turns the vehicle's wheel such that the pointer is kept pointing in the direction of the intended trailer destination. The present invention can be adapted to most vehicle and trailer combinations with minimal cost and complexity.

A method and apparatus for controlling the steering of a trailing section of a multi-sectioned vehicle is described. The trailing section follows the path of the first section. Data is acquired by a controller from sensors on the various sections. The controller then processes this data, generating a configuration needed for the controller-steered wheels to follow a path approximately equivalent to the path taken by the first steered section. Power is then applied by some means to steer these controller-steered wheels, forcing them into the desired configuration. The complexity of the control system can be varied with different algorithms providing alternative steering patterns as desired. This system can be extended with more trailing sections without necessitating more than minor changes to the control algorithms.

The invention discloses a turbine fracturing semitrailer. The turbine fracturing semitrailer comprises a semitrailer body, a turbine engine, a reduction gearbox, a transmission mechanism and a plungerpump; the turbine engine, the reduction gearbox, the transmission mechanism and the plunger pump are arranged on the semitrailer body, the output end of the turbine engine is connected with the reduction gearbox, and the reduction gearbox is connected with the plunger pump through the transmission mechanism in a transmission mode. The turbine fracturing semitrailer has the beneficial effects thatthrough linear connection of the turbine engine, the reduction gearbox, the transmission mechanism and the plunger pump in the power-transmission direction, excessive transmission loss can be avoided, and efficient transmission performance is guaranteed; and the whole semitrailer is small in size, light in weight, low in the use cost, and low in failure risks.

A fuel-efficient tractor-trailer system for improving the fuel mileage of a tractor-trailer combination by improving the air resistance that occurs in the area between the rear of the tractor and the front of the semi-trailer. The fuel-efficient tractor-trailer system provides an improved roof extension, which automatically raises when the tractor is put into reverse gear and an improved wheel mechanism for assisting the side extensions to slide around the semi-trailer ends when the tractor-trailer is turning. The fuel-efficient tractor-trailer system requires only modification to the tractor and not the trailer.

Methods and apparatus for automatically adjusting the angle of a rotatable side view mirror of an articulated tractor and trailer includes transducers attached to the tractor for transmitting signals toward the trailer and for receiving signals reflected by the trailer. The transducers have a substantially symmetrical arrangement about a centerline of a linear transducer bar attached to the tractor and each has an angular orientation substantially dissimilar to adjacent transducers on a same side of the centerline. A control circuit sequentially activates ones of the transducers such that only a single transducer transmits signals at any given time. Thereafter, the control circuit only processes reflected signals received by the emitting transducer. The control circuit calculates an angle between the tractor and trailer and causes the mirrors to rotate. Transducer calibration and mirror adjustment relative to a zero position set by a driver are also contemplated.

The invention relates to a fracturing fluid and sand mixing semitrailer, and belongs to the field of fracturing devices for oil field work. The fracturing fluid and sand mixing semitrailer comprises a semitrailer body, a hydraulic system and an electrical control system. The hydraulic system comprises a hydraulic oil tank, at least one hydraulic pump and a hydraulic multi-way valve. An engine, the hydraulic system, the electrical control system, a lifting control chamber, a spiral conveyor, a clean water suction centrifugal pump, a fracturing fluid suction centrifugal pump, a stirring machine, a discharge centrifugal pump, a liquid adding pump, a dry powder adding device and a concentrated guanidine gum adding pump are integrated on the semitrailer body. The work steps of conducting glue solution mixing after fracturing liquid mixing is conducted and discharging the glue solution to a downward fracturing device can be conducted by operating the electrical control system to drive the hydraulic pump through an operator, and therefore work steps of oil field work are highly integrated, matched devices are reduced, workloads of working staff are reduced, and construction quality is ensured.

The invention relates to a method for determining a set steering angle βo of steered wheels of a vehicle comprising a tractor and a trailer that is articulated with regard to the tractor. This method makes it possible to produce a set value that can be used for various purposes. This set value can thus be used for controlling an actuator acting upon the steering angle or for being communicated in order to inform the driver. According to the invention, during reversing maneuvers: based on a target point C via which the driver would like the path of the vehicle to pass, an angle set value ?c between the axes of the trailer and of the tractor is determined according to said target point C and to the dimensions of the vehicle, and; the set steering angle β of the steered wheels is determined according to a servo-system causing the measured angle ? between the axis of the trailer and the tractor to tend toward said angle set value ?c.

A tractor / trailer combination wherein a trailer is connected to a tractor through the connection of a kingpin with a fifth wheel is provided with a trailer steering system. Using given dimensions of the tractor / trailer combination and a measured articulation angle between the tractor and trailer during a turn, the wheels of the rear axles of the trailer are turned so that they turn approximately about the instant center established for the tractor. In this way, the trailer turns around approximately the same point as does the tractor, thus significantly eliminating off tracking.

In the case of a method for hitching a trailer (2) to a motor vehicle (1), in particular a semitrailer to a semitrailer towing machine, an image sensor (5) is provided which is arranged in a hitching region (6) in such a manner that image data of the hitching region (6) are recorded. During the approach of the motor vehicle (1) to the trailer (2), stored model data of the hitching region (6) of the trailer (2) are segmented in the image data recorded by the image sensor (5) and are in each case placed in the correct position in the image data. A target zone (9) for the hitching is determined therefrom. The arrangement of the target zone (9) in the image data is used as a measurement for a steering operation of the motor vehicle (1) during hitching.

A floor for a trailer, the floor comprising a plurality of cells, each of the cells having a top plate, a bottom plate, and a plurality of parallel vertical members extending between the top plate and bottom plate, the cells being welded to adjacent cells and to longitudinally extending beams. The structure permits the trailer to be relatively low compared to other known designs and provides for a more stable trailer in use.

A trailer hitch for a motor vehicle includes a towbar (2) having an arm (1) and a ball cup (3) provided with an opening and with a ball pivot (6). The ball pivot (6) has a ball head (4) and a pivot (5) and is mounted with the ball head (4) rotatably and pivotably in the ball cup (3) and passes through an opening (7) and juts out of the ball cup (3). An angle-measuring device having a signal transmitter (17) and two sensors (40, 41) is arranged in the joint unit formed from the ball cup (3) and the ball head (4).

The invention discloses an automatic vehicle-mounted mobile power charging and exchanging station for an electric vehicle and a method for quickly exchanging a battery. The automatic vehicle-mounted mobile power charging and exchanging station comprises a tractor, a semitrailer and a battery box storage rack, a battery box, an automatic power exchanging device, a charging system, an electric quantity counting system, an automatic control unit and the like which are arranged on the semitrailer, wherein the storage rack can store a plurality of battery boxes three-dimensionally; the battery boxes are standard exchanging modules connected with a battery house on the lower part of a vehicle body by using a plurality of quick-opening locking bolts; the automatic power exchanging device comprises a lifting table, a transmigration machine, a shifting machine and a plurality of unlocking / locking bushings; the automatic power exchanging device can automatically transport and store the battery boxes, and lock or unlock the battery boxes and the battery house due to mutual matching of the lifting table, the unlocking / locking bushings and the quick-opening locking bolts, so automatic dismantling and exchange of the battery boxes can be realized; and the charging system is used for automatically charging the battery boxes. The station is complete in system, compact in structure, flexible in maneuvering, low in investment and short in construction period, so the automatic power charging / exchanging requirement of the battery of the electric vehicle can be met.

A vehicle convoy system for use in connection with a vehicle, wherein the vehicle includes at least one drive mechanism to impart drive to the vehicle, includes at least a first processor that is adapted to be placed in operative or communicative connection with the drive mechanism to effect control of the drive mechanism based upon data of the position of a leading vehicle in front of the vehicle so that the vehicle moves to follow movement of the leading vehicle. The vehicle can, for example, be a self-propelled wheelchair.