2833results about "Tractor-trailer combinations" patented technology

A system and method for calculating a horizontal camera to target distance is provided. A camera on board a vehicle is configured to image a target on a trailer that is aligned with the vehicle. A controller is in communication with the camera and is supplied a user-obtained measurement. The controller is configured to calculate a first horizontal distance and a second horizontal distance, and to sum the first and second horizontal distances to calculate a horizontal camera to target distance.

By providing a plurality of cooperating, foldable panel members in combination with a plurality of foldable wheel assemblies, a unique wagon or cart construction is attained which is capable of being folded into a small, compact area, whenever desired, and then quickly and easily deployed into a fully erected and operational position, which enables virtually any desired object to be easily transported. In addition, in the preferred construction of this invention, an automatically deployed structural supporting member is incorporated into the wagon/cart for providing inherent strength and rigidity to the wagon/cart when fully erected. In this way, heavy objects previously incapable of being transported are capable of being accommodated with ease.

The invention discloses an electric driving fracturing type power supplying semitrailer. The electric driving fracturing type power supplying semitrailer is characterized in that a high-voltage switch, a transformer and two rectifying unit sets are adopted to correspondingly drive a plurality of high-voltage converting units and a plurality of low-voltage converting units through common DC buses.The whole electric driving fracturing type power supplying semitrailer is small in size, compact in arrangement, and economic; the common high-voltage switch, the transformer and the rectifying unitsare adopted, so that the wiring of power supplying circuits can be reduced; the equipment quantity and investment output power can be decreased; and the use demand can be met.

A system and a method are provided for estimating an actual hitch angle between a vehicle and a trailer. A hitch sensor on the vehicle continuously senses a measured hitch angle and a steering sensor continuously senses a steering angle of steered wheels of the vehicle. A controller determines an offset between the measured hitch angle and the actual hitch angle when the measured hitch angle and the steering angle are substantially constant while the vehicle and trailer are reversing.

The invention discloses an electric drive fracturing semi-trailer of a frequency conversion integrated machine. The optimization and integration of the traditional power supply semi-trailer and the fracturing semi-trailer realize the functions of power supply and fracturing of one semi-trailer without using the complete set of the power supply semi-trailer and the fracturing semi-trailer, the electric drive fracturing semi-trailer is more flexible in actual use, and the well field layout of oil and gas fields is greatly optimized; the transportation is convenient; only a set of high-voltage cables can be connected with the high-voltage power supply to reach a working state, and the wiring installation is faster; compared with diesel-driven fracturing, and the noise of the electric drive fracturing is low without exhaust emission pollution; the driving source is power, which has lower cost than the diesel; the electric drive fracturing semi-trailer adopts an integrated design of a motorand a frequency converter (namely, the frequency conversion integrated machine), the space occupied by the electric motor and the inverter in the prior art is reduced effectively, so the installing part of the electric drive fracturing semi-trailer has smaller volume and the transportation is more convenient, and can also provide space guarantee for installing other equipment on the semi-trailerbody.

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 discloses a single-machine single-pump electric drive fracturing semitrailer. A traditional power supply semitrailer and a fracturing semitrailer are integrated in an optimized manner torealize a semitrailer simultaneously having power supply and fracturing functions; the power supply semitrailer and the fracturing semitrailer do not need to be used in a matched manner so that the single-machine single-pump electric drive fracturing semitrailer is more flexible in actual use and the oil and gas field well site layout is greatly optimized; the transportation is convenient; a working state can be reached only by using one group of high voltage cables to be connected with high voltage power supply so that the wiring mounting is faster; compared with diesel oil drive fracturing,electric drive fracturing has the advantages of small noise and no waste gas exhaust pollution; and as a driving source is electric power, compared with the diesel oil, the electric power has the advantage of lower use cost.

The invention discloses turbine fracturing equipment. The turbine fracturing equipment comprises a transporting device, a turbine engine, a reduction gearbox, a transmission mechanism and a fracturingpump, wherein the output end of the turbine engine is connected with one end of the reduction gearbox; the other end of the reduction gearbox is in transmission connection with the fracturing pump; the transportation device is used for bearing the turbine engine, the reduction gearbox, the transmission mechanism and the fracturing pump and comprises a chassis; the chassis is provided with a transporting section, a bearing section and a lapping section which are connected in sequence; when the turbine fracturing equipment is in a working state, the bearing section can be contacted with the ground; and when the turbine fracturing equipment is in a transporting state, the bearing section does not make contact with the ground. The turbine fracturing equipment has the beneficial effects that the equipment adopts the design of linear connection and a special chassis, so that the gravity center of the turbine fracturing equipment is doubly reduced, and the stability and the safety are well ensured; the structure is simpler, and the investment cost and the operation cost are reduced; the collapse risk of the whole fracturing site is reduced; and the turbine fracturing equipment is good intransmission property and is suitable for long-time and bulky load continuous operation conditions.

A robotic mobile low-profile transport vehicle is disclosed. The vehicle can comprise a first transport module having a frame assembly, a mobility system, and a propulsion system and a second transport module having a frame assembly and a mobility system. A multi-degree of freedom coupling assemblage can join the first and second transport modules together. The vehicle can include a first platform supported about the frame assembly of the first transport module, and a second platform supported about the frame assembly of the second transport module. Each of the platforms can be configured to receive a load for transport. Additionally, the vehicle can include a control system that can operate to facilitate intra-module communication and coordination to provide a coordinated operating mode of the first and second transport modules and the coupling assemblage about a given terrain.

The invention relates to a method for determining a set steering angle β₀ 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 modular hybrid electrical vehicle system may comprise an electric vehicle and a detachable power plant. The detachable power plant may be operable to externally attach to and provide power for the electric motor vehicle.

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.

The invention provides a trailer for use as part of an articulated vehicle (15) with improved cornering characteristics. The trailer includes: a main chassis (18) connectable to a wheeled section (16) of the vehicle immediately ahead of the trailer so that the trailer is rotatable relative to the wheeled section (16) about a substantially upright first axis (19) in the main chassis (18); a sub-chassis (20) having ground-engaging wheels (21) mounted thereto, the sub-chassis (20) being connected to the main chassis (18) and pivotable about a substantially upright second axis (23) in the main chassis (18); and stop means arranged for limiting rotation of the sub-chassis (20) about the second axis (23) and away from a position of a longitudinal alignment with the main chassis (18). The stop means is movable responsively to relative rotation of the wheeled section (16) and the main chassis (18) about the first axis (19). In a preferred arrangement, some wheels on the sub-chassis (20) are steerable responsively to rotation of the sub-chassis (20) about the second axis (23).

The present invention relates to a system for adjusting weight distribution throughout all axle groups of the truck and trailer. The trailer has at least one axle group mounted on a pair of rails attached to the frame of the trailer. These axle groups are locked in position on the rails by locking pins. The system for adjusting weight distribution according to the present invention measures the weight on every axle group on the truck and trailer. The measurement may be of weight directly by load cells etc. or indirectly, by taking measurements from the air suspension system to calculate weight. The measurements are delivered as an electrical signal to one or more microprocessors capable of receiving the electrical signals and calculating the optimum position of the axle group on the trailer. The position of the trailer axle groups relative to the rails is also determined and the position delivered to the microprocessor(s). The microprocessor(s) is programmed to calculate the weight on each axle group and determine any change in position of the trailer axle group(s) on the rails to optimize the weight distribution. The information is presented to the driver on a display located in the cab of the truck. The system further includes apparatus to lock and unlock the locking pins that lock the trailer axle group(s) in position on the rails. The system also includes a communication interface between the truck and the trailer.

An integrated support structure apparatus is provided for attaching either a fifth wheel trailer hitch or a gooseneck trailer hitch to a truck bed. The integrated support structure comprises an H-shaped body that is attached to at least one truck frame rail below the truck bed. A gooseneck ball receiver is attached to a central portion of the body and aligned with a gooseneck opening in the truck bed. A plurality of mounting pads are formed integrally as part of a plurality of end inserts that are assembled to the body.