42results about How to "Reduce inertial load" patented technology

The invention discloses a charging and blanking robot of a punch press, comprising four joints, a base, two arms and an end effector, wherein the first joint, the second joint and the fourth joint have the degree of freedom of rotation, and the third joint has the degree of freedom of up and down translation; one end of the first joint is connected with the base by an input end shell; the other end of the first joint is connected with one end of the first arm by a first joint output flange; the other end of the first arm is connected with a second joint output flange of the second joint; a third joint connecting plate is connected with the joint rack of the fourth joint; and a fourth joint output rotary table is provided with the end effector. A harmonic transmission mode is adopted by a first joint transmission device and a second joint transmission device of the robot. Aiming at the characteristic that a harmonic speed reducer only can bear torque but can not bear bending moment, a pair of tapered roller bearings is arranged on an output shaft and is used for bearing overturning bending moment. The transmission mode has compact structure, high transmission efficiency, small return difference and high transmission accuracy.

The present invention discloses, in certain asp cts, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longitudinal axis and a movable member movably disposed therein and movable within the housing transversely to the longitudinal axis of the housing and positioned within the housing with a first space on a first side thereof and a second space on a second side thereof, the movable member substantially fluidly isolating the two spaces and movable to compress gas in one of the first space and the second space while decompressing gas in the other space so that a charge of compressed gas exits from the housing to move an impact member; e.g. for impacting a pile to be driven into the earth or for impacting a drill apparatus for drilling a wellbore, the movable member movable continuously to provide a series of impacts.

The invention discloses a two degrees of freedom (DOFs) translation motion parallel mechanism. A fixed platform of the parallel robot mechanism is connected with a motion platform which achieves the two DOFs translation motion through two motion branched chains so as to form a closed structure; each motion branched chain comprises a motion sliding block and three sub-constrained branched chains which are connected with the motion sliding block and the motion platform; each sub-constrained branched chain respectively consists of a hook hinge, a connecting rod and a hook hinge which are connected with each other in series; furthermore, each sub-constrained branched chain is connected in parallel between the motion sliding block and the motion platform and is then connected in series with the motion sliding block so as to form the motion branched chain. The two DOFs translation motion parallel mechanism of the invention is realized by adopting the motion constrains of the hook hinge so as to form a space constrain, leads the connecting rod not to be subject to the bending moment, improves the forcing condition of the mechanism and improves the rigidity of the mechanism.

The invention relates to a low-speed wind channel virtual flying test aircraft model designing method and belongs to the field of wind channel virtual flying test model designing. By the method, a control plane driving mode is optimized, and a model operation plane can be changed a control plane automatically to realize a model pneumatic / movement / control coupling function. Weight and inertial load of a model are reduced, balancing of center of mass of the model is realized in the aspect of structural design, and aircraft model reference center, model actual center of mass and virtual flying supporting mechanism rotating center are ensured to be coincident at the same time. The method meets requirements of processing techniques and test equipment, processing accuracy of the model meets requirements on virtual flying wind channel test data measuring accuracy, and the model is stable in running when being applied in virtual flying wind channel tests and convenient to mount and demount.

An apparatus for mixing a liquid in a container in order to provide a homogeneous solution or suspension of the liquid in the container. In particular, the apparatus of this invention can be used to provide a homogenous dispersion of particulate material in a liquid medium.

The present invention relates to underground reciprocating oil pumping machine driven with a rotary motor, and relates to oil pumping machine. The underground reciprocating oil pumping machine has buffering oil pipe, motor set inside the buffering oil pipe, and motor output shaft connected to a lead screw. The motor rotates the lead screw to make the plunger fitting the lead screw move linearly, so as to convey raw oil from underground to surface. By means of transmission mode of rotating motor plus ball lead screw, the rotation of the motor is converted into the liner motion of the plunger pump. The present invention has the features of simple structure, smooth running, high system efficiency, good energy saving effect, capacity of meeting the requirement of automatic control and harsh condition of oil production, low cost, high reliability, etc.

The invention relates to a bionic binocular stereoscopic vision device in the technical file of bionics, wherein a base is connected with a second connecting rod provided with a camera through two branches; one end of a driving pendulum rod of the first branch is connected with a motor through a revolute pair, and the other end of the driving pendulum rod of the first branch is connected with one end of a first connecting rod through a revolute pair; the other end of the first connecting rod is connected with the second connecting rod provided with the camera through a revolute pair; one end of a driving pendulum rod of the second branch is connected with a motor through a revolute pair, and the other end of the driving pendulum rod of the second branch is connected with one end of a third connecting rod; the other end of the third connecting rod is connected with one end of a U-shaped piece provided with a camera though a revolute pair; and the base is connected with a sixth connecting rod provided with a camera through two branches as well. The bionic binocular stereoscopic vision device utilizes two motors to realize synchronous motion of two cameras, has a compact structure because all the motors are arranged on the base, and reduces the difficulty of system calibration because mutual positions between the two cameras are fixed.

Configuration of a rear fuselage tail cone of an aircraft with an auxiliary power unit, whereby a fire compartment of the rear fuselage tail cone defines a housing for the auxiliary power unit in which the auxiliary power unit is housed laterally and asymmetrically with respect to a longitudinal axis (X) of the rear fuselage tail cone and the auxiliary power unit is directly fasten attached to a structural skin wall of the housing. Additionally, by struts or rods attached to opposite side and upper structural skin wall of the fire compartment.

Configuration of a rear fuselage tail cone of an aircraft with an auxiliary power unit, whereby a fire compartment of the rear fuselage tail cone defines a housing for the auxiliary power unit in which the auxiliary power unit is housed laterally and asymmetrically with respect to a longitudinal axis (X) of the rear fuselage tail cone and the auxiliary power unit is directly fasten attached to a structural skin wall of the housing. Additionally, by struts or rods attached to opposite side and upper structural skin wall of the fire compartment.

A crop feeding apparatus having a roller through which the fingers are extended and retracted, has fingers that are formed with tubular finger bodies extending between an inner end configured to be mounted on a finger drive arrangement of the crop feeding apparatus and an outer end of the finger body configured to protrude from the outer peripheral wall of the roller. A breakaway region is formed in the finger body by diametrically opposed slots which are circumferentially elongated to define a shear plane perpendicular to the long axis of the finger body. A slot axis extending between opposing ends of each slot is parallel to the axis of the crop feeding apparatus. The finger body is also hardened by heat treating, and by applying a wear resistant coating over the heat treated body.

An apparatus for mixing a liquid in a container in order to provide a homogeneous solution or suspension of the liquid in the container. In particular, the apparatus of this invention can be used to provide a homogenous dispersion of particulate material in a liquid medium.

A double row roller cam transmission mechanism with backlash adjustment means is disclosed to include two passive wheels respectively provided with rollers, a transmission shaft with a spiral protrusion, and an adjustment device set operable to adjust the relative position between the two passive wheels so that the rollers of the two passive wheels can be respectively and positively abutted against the two opposite surfaces of the spiral protrusion of the transmission shaft to eliminate the backlash between the rollers and the spiral protrusion and to increase structural rigidity and transmission load

Disclosed is an X-Y movement device for a simple chip mounter. A Y-axis driving motor is arranged on the outer side of a pedestal, the inner side of the pedestal is connected with a Y-axis light bar fixing base through a light bar, the Y-axis light bar fixing base is connected with a fixing pedestal through a Y-direction light bar, a Y-direction gear is arranged on the outer side of the Y-axis light bar fixing base, a gear is arranged on the outer side of the fixing pedestal, a synchronous toothed belt is arranged between the Y-direction gear and the gear and connected with a second fixing pedestal, the second fixing pedestal is slidably connected with the Y-direction light bar, an X-direction gear and an X-direction light bar are arranged on the second fixing pedestal, an X-direction toothed belt is arranged on the X-direction gear 7, a chip mounting head pedestal is arranged on the X-direction light bar, a PCB (printed circuit board) fixing support is arranged below the chip mounting head pedestal, a feed chute is connected with the PCB fixing support, the motor drives the gear to drive the synchronous toothed belt to linearly reciprocate within a certain range, and the synchronous toothed belt moves to drive a linear bearing fixed on a shaft pedestal to realize linkage movement in an X-Y axis direction. The X-Y movement device has the advantages of simple structure and low maintenance cost.

A small-sized stepping motor in which its rotary shaft or an output shaft disposed on the output side of its rotary shaft is improved for the purpose of achieving size reduction and motor characteristics improvement. That is, a stepping motor (1) comprises a rotor (2) having a rotary shaft (3) and a permanent magnet (4), and a stator (6) having pole teeth (5) radially opposed to the permanent magnet (4), the rotary shaft (3) being made of aluminium or aluminium alloy. Further, an output shaft (3a) installed on the output side of the rotary shaft (3) so as to project from the stator (6) is made also of aluminium or aluminium alloy.

The invention aims to shorten the moment of the vertical dimension of a swing arm relative to an arm root and provides a workpiece transport device. The workpiece transport device comprises a support base, a support arm in rotatable connection with a main rotation axis relative to the support base, a hand retaining arm in rotatable connection with an elbow joint axis relative to the support arm, a hand in rotatable connection with the elbow joint axis relative to the hand retaining arm, a support arm motor used for driving the support arm to rotate around the support base and arranged in the support base, a hand retaining arm motor used for driving the hand retaining arm to rotate around the support arm, a hand motor used for driving the hand to rotate around the hand retaining arm and arranged in the support arm, a joint axis coaxially arranged together with the elbow joint axis and used for driving the hand retaining arm to rotate relative to the support arm, a transmission shaft used for transmitting the power for driving the hand to rotate, a first reduction mechanism arranged in the support base and used for reducing the output of the support arm motor, and a second reduction mechanism arranged in the support arm and used for reducing the output of the hand retaining arm motor.

The present invention is directed to an optical system for measuring the rotation angle of rotatable object having a rotation shaft (2), which system comprises a reflective diffraction element (6) mounted on said shaft and a module that includes a radiation source (8) emitting a monochromatic beam (bo) towards this element and a radiation-sensitive detection structure (14, 16), the diffraction element is configured to project diffraction order images (18) of its pattern onto associated sections (50(1)-54(2)) of an annular grating structure forming part of the detection structure and the surface size of the diffraction element is smaller than 20% of the surface size of the annular grating structure.

The present invention discloses one kind of linear motor driven pumping unit, which includes linear motor, frame, composite guide wheel, two steel cables, polished rod eye, balancing guide wheel, counter weight, and pedestal. The composite guide wheel and the balancing guide wheel set on the top cross beam of the frame have horizontal rotation shafts, the first steel cable has its first end connected to the second steel cable and fixed to the polished rod eye and the other end fixed to the mover of the linear motor through the composite guide wheel, the second steel cable has its second end fixed to the counter weight through the balancing guide wheel, the frame has its lower end fixed on the pedestal, and the linear motor has stator fixed on the upright of the frame vertically; and the polished rod eye is fixed to the upper end of the sucker rod. The mover of the linear motor reciprocates up and down to complete the oil pumping. The present invention has low power consumption, and changeable stroke and inertial load.

The invention discloses an oil pumping unit. The oil pumping unit comprises a base, a screw and a connecting rod. A seat is arranged on the upper part of the base, a universal ring is arranged at thebottom of the seat, and a ring groove is formed in the top of the base. The universal ring is arranged in the ring groove, a connecting piece is rotatably arranged on the upper surface of the base, the top of the connecting piece is rotatably connected with a stud, the upper end of the stud is in threaded connection with the lower end of a rotating screw sleeve, the upper end of the rotating screwsleeve is rotatably connected to the lower surface of the seat, the lower end of the screw penetrates the seat and is attached to the upper surface of the base, a bracket is arranged at the upper left of the seat, and an opening is formed in the middle of the bracket. The pumping unit is provided with a sliding rod, a sliding groove and a compression spring. When a walking beam rotates, the sliding rod on one side of the rotation direction of the walking beam slides into the sliding groove, at the same time, the compression spring is extruded, and the compression spring absorbs kinetic energyand reduces the inertial load during rotation of the walking beam; and until the walking beam rotates in the reverse direction, the compression spring releases the kinetic energy, and the effects ofreducing the damage to the capacity and reducing the pressure of the inertial load on a gear are achieved.

The invention discloses a parallel mechanism with two-dimensional translation and two-dimensional rotation. The parallel mechanism comprises a fixed frame, a moving platform and four branched chains which are symmetrically arranged between the fixed frame and the moving platform and provided with a drive device respectively, wherein the four branched chains have two types of structures; the branched chain with one type of structure comprises a straight line guide rail, a drive block arranged in the straight line guide rail and a fixed-length connecting rod of which both ends are provided withrotary hinges; the branched chain with the other type of structure comprises a straight line guide rail, a drive block arranged in the straight line guide rail and a fixed-length connecting rod of which both ends are provided with spherical hinges; the four branched chains with the two types of structures are in crossed arrangement; one end of the fixed-length connecting rod is connected with themoving platform, and the other end of the fixed-length connecting rod is connected with the drive block; and the moving platform is connected with a main platform and a fork-shaped shaft, of which the axial lines are vertical to each other, by a rotary pair, and the main platform can rotate around the axial line of the fork-shaped shaft. The parallel mechanism has the advantages that: the structure is simple; the mode of motion is definite; the requirements on complicated holding-releasing operations are met; and because the connecting rod is the fixed length rod which helps to reduce the inertia load, the parallel mechanism has higher rigidity in different operational ranges, and the high-speed movement is easily realized.

A method for controlling a powertrain of a vehicle may include: controlling, by a controller, an engine of the vehicle to be operated when an ignition key of the vehicle is in an on state; and determining, by the controller, whether the controller generates a command changing a state of a clutch based on an operation state of the vehicle. The clutch connects or disconnects a crankshaft of the engine and a crankshaft pulley including the clutch. The crankshaft pulley is connected to a generator pulley and an air conditioner compressor pulley via a belt.

A composite material heald frame based on a laminated board structure adopts a planar framework structure and comprises a first transverse beam and a second transverse beam, wherein two ends of the first transverse beam and the second transverse beam are rigidly connected with a first side gear and a second side gear; the first transverse beam is provided with a first guide board and a second guide board; the second transverse beam is provided with a third guide board and a fourth guide board; the first transverse beam, the second transverse beam, the first side gear, the second side gear, thefirst guide board, the second guide board, the third guide board and the fourth guide board are respectively formed by pressing four layers of carbon fiber composite material laminated boards; the thickness of carbon fiber of each layer of the four layers of carbon fiber composite material laminated boards is 0.234mm, and a pavement direction takes an included angle between fiber and an X axis asreference and is labeled as [0 / 24.39 / -31.02 / 90] degrees. According to the composite material heald frame disclosed by the invention, the four layers of the carbon fiber composite material laminated boards are applied to a heald frame, inertial load during a production process of a weaving machine can be reduced to a large extent, vibration and noise of the weaving machine are inhibited while light weight of the heald frame is realized, and the machining speed and the weaving efficiency of the weaving machine can be effectively improved.

The invention discloses a three-degree-of-freedom parallel driving joint, and relates to a driving joint. The three-degree-of-freedom parallel driving joint comprises a joint motion connecting rod frame, a three-degree-of-freedom motion mechanism and a motor set; the three-degree-of-freedom motion mechanism comprises a connecting rod fixed frame, a torsion fixed frame and motion transfer modules;the joint motion connecting rod frame is rotationally connected with the connecting rod fixed frame; the connecting rod fixed frame is rotationally connected with the torsion fixed frame; the motion transfer modules are mounted on the connecting rod fixed frame and the torsion fixed frame; the torsion fixed frame is connected with an output end of the motor set, and can be rotated relative to themotor set; and the motion transfer modules are driven to move by the motor set to realize torsion, pitching and yawing motions of the joint motion connecting rod frame. The three-degree-of-freedom parallel driving joint is compact in structure, and can effectively reduce inertial loads of the motions of a terminal execution mechanism.

The invention discloses an automatic flexible starting device of a pneumatic clutch. The pneumatic clutch is supplied with gas by arranging a plurality of groups of gas supply pipelines with different gas supply pressures in parallel. The automatic flexible starting device has the advantages that the structure is simple, and the implementing is easy; the instantaneous impact load of a gear is reduced, so as to protect a speed reducer, reduce the instantaneous impact load and inertial load of the gear, and prolong the service life of the speed reducer.

The invention belongs to the field of a robot for testing an overhead power transmission line and particularly relates to a rotary input robot for testing the oscillating performance of the overhead power transmission line. The robot comprises a frame and a tail end actuator, wherein one side of the tail end actuator is connected with the frame through a first branch and the other side of the tail end actuator is connected with the frame through a second branch I or a second branch II. Due to the adoption of the robot, not only can the rigidity of the robot be improved, but also the load capacity of the robot can be improved. The robot is beneficial for bearing a large load in the process of testing the oscillating performance of the transmission line. Particularly, the robot consisting of a parallel four-bar mechanism has a more obvious effect. The robot carries out rotary input by rotating an auxiliary driving robot and is convenient to install and place a revolute pair, so that the inertia load of the robot is reduced and the robot is more convenient to install and place. The tail end actuator of the robot does not have the rotating motion function and can only move in a plane, so that the complexity of programming a robot control program can be reduced.

The invention relates to a low-speed wind channel virtual flying test aircraft model designing method and belongs to the field of wind channel virtual flying test model designing. By the method, a control plane driving mode is optimized, and a model operation plane can be changed a control plane automatically to realize a model pneumatic / movement / control coupling function. Weight and inertial load of a model are reduced, balancing of center of mass of the model is realized in the aspect of structural design, and aircraft model reference center, model actual center of mass and virtual flying supporting mechanism rotating center are ensured to be coincident at the same time. The method meets requirements of processing techniques and test equipment, processing accuracy of the model meets requirements on virtual flying wind channel test data measuring accuracy, and the model is stable in running when being applied in virtual flying wind channel tests and convenient to mount and demount.

The invention discloses a heald frame of a full carbon fiber composite structure. The heald frame disclosed by the invention comprises an upper cross beam and a lower cross beam which are arranged in parallel, wherein a damping interlayer A is arranged inside the upper cross beam, the two ends of the upper cross beam are respectively connected with the upper end of a side baffle A and the upper end of a side baffle B, a damping interlayer B is arranged at a joint of the upper cross beam and the side baffle A, and a damping interlayer C is arranged at a joint of the upper cross beam and the side baffle B; the two ends of the lower cross beam are respectively connected with the lower end of the side baffle A and the lower end of the side baffle B, a damping interlayer D is arranged at a joint of the lower cross beam and the side baffle A, a damping interlayer E is arranged at a joint of the lower cross beam and the side baffle B, and a damping interlayer F is arranged inside the lower cross beam. The heald frame disclosed by the invention can effectively inhibit vibration of the heald frame in a loom production process, and an inertial load of the heald frame in a high speed state is greatly reduced.