31results about How to "Reduced output torque requirements" patented technology

The invention discloses an RCM mechanism for a mechanical arm of a laparoscopic minimally invasive surgical robot. The RCM mechanism disclosed by the invention comprises a connecting rod I, a connecting rod II, a connecting rod III, a connecting rod IV, a connecting rod V, a connecting rod VI, a linear motion output mechanism I, a linear motion output mechanism II, a rotation output mechanism and surgical instruments, wherein the six connecting rods form double parallelogram mechanisms. According to the RCM mechanism, motions of the surgical instruments including linear displacement freedom degree T, deflection freedom degree P and rotation freedom degree Y are correspondingly realized through the driving actions of the linear motion output mechanism I, the linear motion output mechanism II and the rotation output mechanism respectively; requirements of various freedom degrees to moment/torque of a driving mechanism are reduced through the double parallelogram mechanisms and the manner that the rotary centre axis of the rotation freedom degree Y and the connecting rod II form a certain included angle theta; the connecting rod III is directly pushed and pulled through the linear motion output mechanism II, so that the output moment/torque requirements to a freedom degree driving mechanism are reduced; and thus, the light weight and the miniaturization of the mechanical arm of the laparoscopic minimally invasive surgical robot are realized.

The invention relates to a driving motor front-engine rear-drive automatic mechanical gearbox gear shifting system, in particular to a synchronizer-free gear shifting automatic mechanical gearbox on the basis of few-gear middle shaft active speed regulation, and belongs to the technical field of automobile control. The system comprises an input shaft, an output shaft, driving and driven gears for each gear, a spline hub, an engagement sleeve, a sensor, a speed regulating motor, a speed regulating motor transmission mechanism, a clutch operation mechanism, a gear shifting executing mechanism and a controller. The system realizes the synchronism of the engagement sleeve and a target-gear gear during the gear shifting through the regulation on the input shaft rotating speed under the condition of the motive power interruption of the speed regulating motor, a synchronizer with high requirements on materials is omitted, the cost is favorably reduced, and meanwhile, the problem that the starting and acceleration performance and the relative high-speed running of a small-size pure electric automobile cannot be simultaneously considered can be favorably solved.

The invention provides a one-way spiral half soil compaction drill bit which comprises a hollow connecting rod. One end of the connecting rod is provided with a flange plate and a drill tip is arranged close to the other end of the connecting rod. The hollow connecting rod is sequentially and coaxially sleeved with a lower spiral compaction expanding body, a non-closed compaction expanding body and an upper soil conveying auger stem from the end close to the drill tip to the end provided with the flange plate. The drill tip is connected to the end of the lower spiral compaction expanding body, spiral compaction expanding blades are arranged on the outer wall of the lower spiral compaction expanding body, upper spiral soil conveying blades with the spiral direction identical to that of the spiral compaction expanding blades are arranged on the outer wall of the upper soil conveying auger stem, the outer diameter of each compaction expanding blade is identical to that of each upper spiral soil conveying blade and is D1, the maximum outer diameter of the non-closed compaction expanding body is D2, the maximum outer diameter of the lower spiral compaction expanding body is D3, and an inequation D3<D2<D1 is satisfied. According to a one-way spiral half soil compaction pile construction technology and the one-way spiral half soil compaction drill bit applied to the technology, foundation piles which are high in bearing capacity, low in cost, green and environmentally friendly can be constructed, the drill bit and the technology are suitable for various complex stratums including a hard rock stratum, and the phenomena of the compaction negative effect, pile body lateral displacement and the like are effectively reduced.

The invention belongs to the field of mechanical-electrical integration, particularly relates to a stair climbing robot with a planetary gear train, and mainly solves the problems that a conventional stair climbing robot is low in transmission efficiency, difficult to deform, slow in movement, poor in structural stability and the like. The stair climbing robot with the planetary gear train comprises a transmission system, a changeover system and an executive system, wherein the transmission system comprises a left transmission group and a right transmission group, and the left transmission group and the right transmission group are in parallel and are symmetrically mounted by using a longitudinal center line as a symmetric center; the changeover system comprises four changeover groups, wherein the four changeover groups are separately arranged in four directions of a bottom plate, and each of the changeover groups consists of a sun gear shaft, a long sleeve, a shaft coupling, an electromagnetic clutch and a bearing; the executive system consists of four gear group systems, wherein each of the gear group systems comprises an inner triangle plate, an outer triangle plate, three planetary gear shafts, six planetary gear shaft sleeves, three planetary gear blades, a sun gear and a blade bearing.

The invention relates to a gearless counterweight towing oil extractor the motor of which is arranged on the lower part, which fundamentally solves the problems in the prior towing oil extractor of high cost, short service life of wire ropes and poor safety. The technical key points of the gearless counterweight towing oil extractor are as follows: a suspension device is arranged on the top of a frame; a pumping rod and a counterweight are suspended on both sides of a head sheave through suspended wire ropes; a driving sheave of a tractor and a belt pulley of a belt gear which is arranged on a foundation and driven by a magnetoelectric machine are arranged on the same transmission shaft; and one end of a conveying rope on the driving sheave passes by a guide wheel which is fixed on the frame and a movable pulley one which is arranged on the upper part of the counterweight and then is fixed on the top of the frame, and the other end of the conveying rope passes by a movable pulley two which is arranged on the lower part of the counterweight and then is fixed on the foundation. The gearless counterweight towing oil extractor has the advantages of high transmission efficiency, low energy consumption, small volume, light weight and low manufacturing cost, and realizes more convenient assembly and maintenance of a system.

The invention discloses an intelligent man-machine interaction type vehicle accelerator pedal device. The device comprises a pedal rotary shaft system, a control shaft system, a sliding polished shaft system and a clutch shaft system. The pedal rotary shaft system, the control shaft system, the sliding polished shaft system and the clutch shaft system are arranged on a pedal support. The pedal rotary shaft system is used for achieving work states of a common accelerator pedal, the control shaft system transmits power to the clutch shaft system through the sliding polished shaft system, a cylindrical cam, idler wheels and a transmission rod in the clutch shaft system drive a pressing plate to move axially so that the plate-type cam of the control shaft system can achieve feedback control of pedal force after the pressing plate and a friction plate are combined and locked, and an adjusting mechanism in the sliding polished shaft system can adjust the axial position of a sliding gear so that the common accelerator pedal can work when a control motor fails. Besides, control of rotation speed and power of an engine and running speed can be achieved through the common accelerator pedal, running states and road condition information can be fed back to drivers through an accelerator pedal in a tactile feedback mode, man-machine interaction is achieved, and the drivers are assisted in improving driving behaviors.

The invention discloses a stretching component of elevator devices, and comprises a plurality of supporting bodies that have clad and support core wires and an including body that includes the supporting body, wherein, the including body takes a shape of a flat zonal body structure, and the width of the including body is at least larger than the thickness of the including body; the clad of the supporting body and the including body are made of non-metallic materials, and the supporting body and the including body can move relatively. The stretching component of the invention can eliminate the deformation influence of the including body, improves the service life of the stretching component, has the advantages of simple structure, long service life and good friction property, etc., and leads elevator systems to be more flexible.

The invention provides an electric adjustable jack which comprises a jack head assembly, a lifting assembly, a power transmission assembly and a base assembly. An automatic locking assembly is located in the lifting assembly. Compared with a straight rod shaped lifting assembly of a traditional scissor jack, when the lifting assembly with the bent state lifts an identical object to the same height, torque needing to be output by a motor is smaller, the lifting assembly can be adjusted to the ideal state according to the requirement of the application environment, the requirement of a jack for the torque output by the motor is lowered, and the lifting capacity of the jack can be improved temporarily, so that the jack adapts to the more narrow working environment, and meanwhile the jacking range of the jack is greatly enlarged.

The invention discloses a stretching component of an elevator device, which comprises a plurality of carrying bodies of bearing core threads provided with coating layers, and an enclosing body for enclosing the carrying bodies; wherein, the outer appearance of the enclosing body adopts a flat strap-shaped structure, and the width size of the inclosing body is at least larger than the thickness size thereof; the coating layers and the enclosing body of the carrying bodies are made of non-metal material, the carrying bodies are adjacently arranged, the relative motion can be performed between adjacent carrying bodies, as well as between the carrying bodies and the enclosing body. The invention also discloses the elevator device adopting the stretching component. The stretching component can eliminate the deformation of the enclosing body, and the service life of the stretching component is enhanced; the stretching component has the advantages that the structure is simple, the service life is long, and the friction characteristics are good, and meanwhile the arrangement of an elevator system is more flexible.

The invention provides a pure electric vehicle and a powertrain system, comprising a housing, an electric motor, a first planetary row, a transmission mechanism and a control shifting device. A firstplanetary row includes three first rotating elements, one of the three first rotating elements controls the shifting device and the housing, the output shaft of the motor is connected to control the selective operation of the shifting device so as to realize braking or rotation, and the other two of the three first rotating elements are respectively connected with the output shaft of the motor andthe input ends of the transmission mechanism one by one; The output end of the transmission mechanism is used for driving and connecting to the wheel end of the automobile. The transmission mechanismhas a two-step ratio of less than 2, so that the torque demand of the motor can be reduced and the output torque of the wheel end of the automobile can be increased, and the ride comfort of the vehicle can be ensured; moreover, the whole structure of the transmission mechanism is compact, the integration level is high, the control is simple and the cost is low.

The invention discloses a stretching component of an elevator device, which comprises a plurality of carrying bodies of bearing core threads provided with coating layers, an enclosing body for enclosing the carrying bodies, and a plurality of protective sleeves between the enclosing body and the carrying bodies; wherein, the outer appearance of the enclosing body adopts a flat strap-shaped structure, and the width size of the inclosing body is at least larger than the thickness size thereof; the coating layers and the enclosing body of the carrying bodies are made of non-metal material; the carrying bodies are enclosed by the protective sleeves; and the protective sleeves and the enclosing body can move relatively. The invention also discloses the elevator device adopting the stretching component. The stretching component can eliminate the deformation of the enclosing body, and the service life of the stretching component is enhanced; the stretching component has the advantages that the structure is simple, the service life is long, and the friction characteristics are good, and meanwhile the arrangement of an elevator system is more flexible.

The embodiment of the invention discloses a brake-by-wire system for an automobile. The system involves a master controller, a brake pedal, a brake pushrod, a fully decoupled brake simulator, an actuator front shell body, an actuator rear shell body, a normally closed solenoid valve, an anti-locking device, a first brake, a second brake, a third brake, a fourth brake, a displacement sensor, a first ball bearing, a second ball bearing, a third ball bearing, a fourth ball bearing, a first speed reducing and torque increasing mechanism, a second speed reducing and torque increasing mechanism, a first power assisting motor, a second power assisting motor, a first brake master cylinder, a second brake master cylinder, a first normally open solenoid valve, a second normally open solenoid valve,a first pressure sensor, and a second pressure sensor. According to the scheme provided by the brake-by-wire system, the problem of invalid braking force caused by the failure of a certain part of a power assisting mechanism in the travelling process of the automobile can be avoided, the response speed of the brake-by-wire system for the automobile is improved, and the control difficulty of the stability of the brake-by-wire system is reduced.

The invention provides a drive device, drive method and control device of an operation window of a ventilation cabinet. The drive device comprises an output shaft, a first-stage straight gear, a second-stage straight gear, a drive module and a fixing module. The output shaft is arranged on a center shaft of the ventilation cabinet in a sleeving manner and used for driving the center shaft to rotate. The first-stage straight gear is arranged on the output shaft in a sleeving manner and used for driving the output shaft to rotate. The second-stage straight gear is engaged with the first-stage straight gear and used for driving the first-stage straight gear to rotate. The drive module cooperates with the second-stage straight gear and is used for driving the second-stage straight gear to rotate. The fixing module is connected with the drive module and used for fixing the drive module to the top end of the ventilation cabinet. According to the drive device, the two stages of straight gearsare adopted for driving the center shaft on the ventilation cabinet, the two stages of straight gears achieve the aim of cooperating with different ventilation cabinets through the later changeable reduction ratio and good adaptability, and the drive device is suitable for most ventilation cabinets in the market and is wide in application range.

The invention discloses an unmanned aerial vehicle attitude control system with variable-angle fan blade control surfaces. The control system comprises a main body and control surface systems arrangedon two sides of the main body, the main body comprises a carbon fiber base, a brushless motor and rotors, each control surface system comprises a bracket, a control surface group, a connecting rod and a steering engine mechanism, and the invention relates to the technical field of aircraft attitude control. Compared with variable pitch adjustment, the unmanned aerial vehicle attitude control system with the variable-angle fan blade control surface is simple in structure, small in axial size and low in production and maintenance difficulty and cost; compared with vector adjustment, the controlsystem has the characteristics that the stability and rapidity are better, the requirement for the output torque of a steering engine is not high, in other words, control can be achieved through thesmall steering engine, and the weight is reduced; compared with sliding flow rudder adjustment, the control system has the advantages that the adjustment effect is good, the windward side is small, and the anti-interference capacity is higher; and efficient and stable control of the fixed double rotors is realized, the flexibility is higher, the stability is better, and the control system is moresuitable for take-off and landing control of VTOL and STOVL aircrafts.