84results about How to "High drive torque" patented technology

The invention provides a high-precision intelligentized rail fastener bolt wrench and an operating method of the high-precision intelligentized rail fastener bolt wrench. A power system is arranged on a vehicle frame and transports driving power to a hydraulic motor through an oil pump and a control valve component. The vehicle frame is further provided with a working system, and the working system comprises two groups of working devices which are vertically arranged. Each group of working devices comprise a bolt sleeve and a hydraulic motor which drives the bolt sleeves to rotate, and the bolt sleeves are connected in a coaxial mode. A torque sensor is arranged between the bolt sleeve and the hydraulic motor in series, the torque sensor is connected with a torque measurement and control instrument, and the torque sensor transmits a torque state to the torque measurement, controls instrument and further controls a torque output state of the hydraulic motor. When screwing operation is conducted and the torque sensor detects an instant torque value which is identical with the set torque value, the hydraulic motor stops screwing. When the screwing operation is conducted and an existing bolt torque exceeds the set value, the working device reversely unscrews and unloads the bolt, then screws the bolt and sets a value. The high-precision intelligentized rail fastener bolt wrench is simple and reliable in structure, and two groups of working devices independently work and do not influence each other.

The invention provides a punching sheet structure of a permanent-magnet motor, belongs to the technical field of motor manufacturing. By the punching sheet structure, the technical problems of small patented output and the like of an existing permanent-magnet motor are solved. The punching sheet structure comprises a round disc-shaped sheet body, wherein a plurality of V-shaped grooves are formed in the sheet body, a plurality of U-shaped grooves are further formed in the sheet body and are in one-to-one correspondence to the V-shaped groove, each pair of U-shaped groove and V-shaped groove forms a group of magnetic steel grooves, the magnetic steel grooves are distributed around the circumferential direction of the sheet body at intervals, openings of the U-shaped grooves and the V-shaped grooves face a peripheral surface of the sheet body, the U-shaped grooves are arranged between the V-shaped grooves and a shaft hole, and magnetic isolation bridges are arranged at lower ends of the U-shaped grooves and lower ends of the V-shaped grooves. In the punching sheet structure, each group of magnetic steel grooves comprise the U-shaped groove and the V-shaped groove which are arranged correspondingly, the U-shaped groove and the V-shaped groove are divided into two layers along a radial direction, thus, the magnetic resistance of a direct-axis magnetic path of the motor is increased, the magnetic conduction is reduced, the direct-axis inductance is reduced, the difference value between a quadrature-axis inductance and the direct-axis inductance is increased, the magnetic resistance torque of the motor is increased, and the output of the motor is increased.

The invention discloses a planetary gear series-parallel twin-mode hybrid vehicle drive system and relates to the technical field of vehicles. The system comprises an engine, a front planetary gear train, a rear planetary gear train, a first clutch, a second clutch, an overrun clutch, a backstop, a brake, a first motor and a second motor. Conversion among different working modes can be achieved through combination and separation of the clutches and the brake. The system is compact in structural design, the power grades of the motors are effectively decreased, the sizes of the motors are reduced, the slope climbing performance of the vehicle in a pure electric mode is improved, and the low-speed performance of the vehicle in the pure electric mode is improved; the defect that parasitic power is generated when the vehicle travels in a high-speed area is overcome, the high-efficiency range of a hybrid power system is enlarged, and the economic efficiency of the vehicle is improved; and the problems that the acceleration performance of the vehicle is poor and the slope climbing capability is limited in a low-speed area are solved, and the dynamic property and the economic efficiency of the vehicle are improved.

Detecting rotation speed of motor, working current and voltage, the invention controls motor to operate at following states: (1) working current of motor larger than setting value, using voltage output from accumulator as voltage for supplying to motor; (2) voltage of battery smaller than setting value, keeping voltage output from accumulator as voltage for supplying to motor; (3) working current of motor not larger than setting value, voltage of battery not smaller than setting value; when voltage signal detected from rotating handle for speed adjustment is in maximum, the disclosed method converts voltage of accumulator storage battery to obtain voltage of transformation V2, and using summation of V2 and output voltage V1 from accumulator storage battery as working voltage of motor. Thus, rotation speed of motor reaches to (V1+V2)/V1 time of former rotation speed.

The invention relates to a high-precision angular indexing dynamic measuring spindle system belonging to a precision measuring device. A mandrel (12) is fixed on a lower seat body (18), and the center is provided with a Mohs tip (11) ; a gearwheel set (6) is provided with a precision grating disc (7) which is sheathed on the mandrel by a ball bearing set (8); two sets of grating read heads (13) are arranged on the lower seat body (18) and are distributed diametrically to sample reading; a drive plate set (9), the precision grating disc (7) and the outer cover of the ball bearing set (8) are in rigid connection with the gearwheel set (6); a grip set (10) and a clamping workpiece (14) are arranged on the drive plate set (9), and a drive motor (1), a reducer (2) and a pinion wheel set (4) are arranged in an upper seat body (3) to form a drive system. The invention aims to provide the high-precision angular indexing dynamic measuring spindle system which has novel design, advanced technology, reliable structure and low manufacture cost and can be widely applied to precision measuring apparatus industry.

The invention relates to a wheel bearing arrangement having at least two rows of rolling bodies for supporting a wheel hub drivable by the wheel bearing arrangement via a drive element. The wheel hub is connected to the drive part; the wheel hub and the drive part mesh with each other in a form-locking manner via a pair of mutually corresponding end face gears. On the wheel bearing arrangement, in particular, the ratio of the pitch circle diameter (VTK) of the wheel bearing arrangement-side toothing to the rolling element row distance (RA) of the at least two rows of rolling elements is greater than a value of three.

The invention discloses a mechanical arm used for replacing a spiral liner plate. The mechanical arm comprises a linking tool, a pitching joint, a spiral curved surface attaching joint and an installation hole positioning joint. The spiral liner plate to be replaced is fixed to the linking tool. The pitching joint comprises a pitching connecting plate and a support, and the pitching action of the pitching joint is controlled by a drive mechanism arranged between the pitching connecting plate and the support. The spiral curved surface attaching joint comprises a tool connecting mechanism and a rotating mechanism I. The linking tool is connected to the tool connecting mechanism. The rotating mechanism I drives the linking tool to rotate. The installation hole positioning joint is composed of a rotating mechanism II arranged on the linking tool. The linking tool is driven to rotate in the horizontal plane. Pitching rotation, rotation in the horizontal plane and rotation in the vertical plane of the mechanical arm are completed through the coordination of the three joints, the posture of the spiral liner plate is adjusted gradually so that the spiral liner plate can be well attached to a spiral supporting plate of a vertical stirring mill and an installation hole can be positioned, and the mechanization and automation degree of replacing the spiral liner plate is greatly improved.

The distance from the vehicle stop position to the target parking position is determined as the set distance. Then, the vehicle moves by gradually reducing the necessary braking force including the oscillation braking force. Thus, it is possible to run an engine-driven vehicle at an extremely low speed regardless of whether a motor is provided.

The invention provides an HCU and clutch work mode switching control method. The method comprises the steps of when a clutch is in the non-parallel work mode, determining whether the work conditions of an engine and a drive motor meet a first preset condition; when the work conditions of the engine and the drive motor meet a first preset condition, determining that a power source cannot meet the torque needed by a driver in the previous condition, if the clutch is in the parallel work condition, determining whether the power source can be made to provide a bigger drive torque, or determining whether the power source efficiency and the automobile noise and vibration conditions meet a second preset condition; when it is determined that the clutch is in the parallel work mode, the power source can provide a bigger drive torque, or the power source efficiency and the noise and vibration conditions meet the second condition, switching the clutch to the parallel work mode. The use of the technical scheme can make sure that the automobile has full power, enhances the driving safety, avoid the occurrence of resonance, and reduces noise.

The invention relates to a rotary power head, in particular to a high-torque double-motor double-speed rotating power head, and belongs to the technical field of the drilling power head device. The rotating power head comprises a power box, the power box has a spline shaft in the center, and hydraulic motors are connected with one end of gear shafts on the left and right sides of the spline shaft, and drive the gear shafts. The hydraulic motors on the left and right sides of the spline shaft are connected to a hydraulic motor control handle via a hydraulic motor control assembly which can control the two hydraulic motors to operate independently or simultaneously. The high-torque double-motor double-speed rotating power head has the advantages of simple, compact and reasonable structure, and has the hydraulic and mechanical double shifting and many shift gears so that the rotary speed range is wide and suitable for various use conditions. The self-lubricating mechanism prolongs the life of the gear and the bearing, and the driving torque of the double motor is greatly increased.

The invention provides a permanent magnet rotary electric motor as a starter-generator apparatus with which high driving torque is obtained when it functions as a starter motor whereas the driven torque can be suppressed low when it functions as a generator. The permanent magnet rotary electric motor includes a stator 50 and a winding 53 on the stator, and a substantially cylindrical rotor yoke 61 including a plurality of permanent magnets 62 disposed along a circumferential direction and rotatable around the stator 50 and wherein the rotor yoke 61 has a commutating pole portion 613 between each adjacent ones of the permanent magnets 62, is constructed such that a gap 612, 614 is provided at a portion between each of the permanent magnets 62 and the rotor yoke 61.

The invention relates to the technical field of deep-hole boring machines, in particular to a deep-hole boring machine for machining a roller shell of a roller of a cast rolling machine. An independent variable frequency motor is adopted as a lead screw motor to drive feed lead screws, and in combination with a boring rod motor, stepless variable speed control over axial feeding of a boring cuttershaft is jointly achieved; and by the adoption of a gear ring simultaneously provided with inner teeth and outer teeth, synthesis motion of rotation of the feed lead screws around the axes of the feed lead screws and rotation of the feed lead screws around the axial line of a main boring rod is achieved. The technical problem of drooping of the boring rod is solved through two-end supporting. Thedeep-hole boring machine is simple in structure, relatively small in equipment total volume, low in power consumption and high in machining efficiency.

The invention discloses a control valve and a control system of a crawler chassis driven by a hydraulic motor to travel. A speed regulation module and a logic control module are involved, wherein thespeed regulation module comprises a safety valve, a pressure compensator, a damping hole and a proportional speed regulation valve, wherein the safety valve is used for limiting the maximum working pressure, protecting a pumping set and a whole hydraulic system; the pressure compensator is used for enabling the pumping set to supply oil in the pressure and flow state required by the system all thetime, and redundant oil liquid returns to an oil tank; the damping hole is used for enabling extremely small flow of oil to exist in a valve to return through the damping hole, the consistence of thetemperature of the oil in the valve is ensured so as to increase the response speed of the system; and the proportional speed regulation valve is used for controlling the continuous output of the oilflow through continuous changing of an opening port of a proportional electric signal control valve. All elements in the control valve are all conventional valve members, are mature, reliable, universal, low in price and high in cost performance, and the control valve and the control system can obtain remarkable economic benefits.

An adjustment drive for a motor-adjustable steering column for a motor vehicle, includes a spindle drive having a threaded spindle which engages in a spindle nut which, so as to be able to be driven in a rotating manner about the spindle axis relative to the threaded spindle, is coupled to the rotor shaft of a drive motor which has a rotor and a stator. In order to enable a compact design with minor complexity, the rotor shaft of the drive motor is configured as a hollow shaft which is disposed so as to be coaxial with the spindle axis and in which the threaded spindle is coaxially disposed.

To transmit large driving torque to a pump shaft from a camshaft, without substantially reducing an effective support surface of a journal part of the camshaft.The pump driving device in an engine drives the pump shaft 32 of a pump 21 installed in an engine body 11 by the camshaft 20 for a valve system supported by the engine body 11. While threadably attaching a bolt 23 having a head part 23a with a square hole 23c to one end part of the camshaft 20, a square shaft part 32a fitted to the square hole 23c is formed in one end part of the pump shaft 32, and the pump shaft 32 is driven from the camshaft 20 via these square hole 23c and square shaft part 32a.