48results about How to "Reduce output force" patented technology

Disclosed is a walking robot having an improved driving structure for a pitch-direction femoral joint and a knee joint. The walking robot includes a pitch-direction actuator driving the pitch-direction femoral joint to rotate a femoral link relative to a body in a pitch direction, and a power transmission unit transferring driving force of the pitch-direction actuator to the knee joint to rotate the lower leg link relative to the femoral link in the pitch direction.

Disclosed is a walking robot having an improved driving structure for a pitch-direction femoral joint and a knee joint. The walking robot includes a pitch-direction actuator driving the pitch-direction femoral joint to rotate a femoral link relative to a body in a pitch direction, and a power transmission unit transferring driving force of the pitch-direction actuator to the knee joint to rotate the lower leg link relative to the femoral link in the pitch direction.

The invention discloses a nut screw type automobile transporting device which comprises a transporting vehicle, a lifting bracket and an unfolding mechanism. The lifting bracket is arranged on the upper side of the transporting vehicle; the unfolding mechanism is arranged on the upper side of the lifting bracket; the lifting bracket comprises a front upper frame and a rear upper frame; the front upper frame and the rear upper frame are correspondingly provided with jacking mechanisms for jacking; each jacking mechanism comprises a jacking motor, a jacking driving gear component, a chain, nut screws and jacking driven chain wheels; output ends of the jacking motors are in transmission connection with the jacking driving gear components; the jacking driving gear components are in transmission connection with the jacking driven chain wheels by means of the chain; and the jacking driven chain wheels are in transmission connection with input ends of the screw nuts. An output force of the chain is greatly reduced, the problem of easy damage of the chain under large load at long transportation distance is avoided, and the reliability of the transporting device is improved; and a plurality of unfolding driven gear components are driven at the same height by a single rack, so that the problem that the overall thickness of the transporting device is increased is further avoided.

The invention relates to a reinforced synchronizer which comprises a joint sleeve, a spline hub, a positioning sliding block, a synchronizing ring and a target retaining gear. The reinforced synchronizer is characterized in that a reinforced ring is arranged between the synchronizing ring and the spline hub. An outer reinforced slant face is arranged on a reinforced bump at the outer end face of the synchronizing ring of the synchronizer. The reinforced synchronizer has the advantage of producing axial reinforcement in a synchronizing stage and amplifying output power of a drive device. When the reinforced synchronizer is applied to a manual speed changer, working intensity of a driver can be reduced and when the reinforced synchronizer is applied to the automatic speed changing technology, energy loss in a gear shifting process of a gear shifting actuator can be reduced. Meanwhile, the size of the gear shifting actuator can be further reduced, and a good technical base is provided for improvement of gear shifting quality. Compared with the prior art, the reinforcement efficacy is high and obvious economic benefits and social benefits can be produced.

The invention relates to a self-energy-supply magnetorheological damper and a working method thereof. The damper comprises a hollow piston rod, a magnetorheological damper system and an energy recycling system; the energy recycling system comprises an induction coil sleeve fixedly arranged in the piston rod; a magnetic ring shaft is arranged in the induction coil sleeve; and the external impactingborne by the piston rod makes the magnetic ring shaft and the induction coil sleeve relatively move to generate magnetic induction line cutting so as to generate induction current to be provided fora work power source for the magnetorheological damper system. According to the self-energy-supply magnetorheological damper, external power input is not needed, the self-energy-supply magnetorheological damper can be applied to a place without an external connection power source, the structure is simple, and adaptability is high.

The invention relates to a distributed nonlinear drive deployment method for a large-diameter annular reflector. The distributed nonlinear drive deployment method comprises the following steps of: (1), obtaining the nonlinear output torque of a hinge of an annular reflector by calculation, and obtaining the output torque Tfar of a far-end hinge and the output torque Tnear of a near-end hinge; (2), obtaining the corresponding relationship of the rotational angle of a driving gear at the far-end hinge and the rotational angle of a driven gear at the far-end hinge shown in the specification, and the corresponding relationship of the rotational angle of a driving gear at the near-end hinge and the rotational angle of a driven gear at the near-end hinge shown in the specification by calculation; (3), calculating a transmission ratio of the driven gear to the driving gear at the far-end hinge and a transmission ratio of the driven gear to the driving gear at the near-end hinge at any time; and (4), respectively obtaining corresponding gear trains by calculation according to the transmission ratio ifar and the transmission ratio inear. By means of the distributed nonlinear drive deployment method disclosed by the invention, energy distribution of a system in a deployment process is optimized; furthermore, the motor output energy in the deployment process is reduced; and thus, the deployment driving force is reduced.

The invention provides an energy-saving balanced high-pressure single seated valve which comprises a valve body, a valve cover, a valve rod, a valve core and a valve seat. The valve rod penetrates through the valve cover and extends into the interior of the valve body, the valve core is arranged on the middle portion of the valve rod, and the valve seat matched with the valve core is arranged on the inner wall of the valve body. Two sets of piston devices are arranged in the valve body and on two sides of the valve core in a symmetrical mode, piston cylinders in the two sets of the piston devices are used for processing piston guide stroke holes along the action direction of the valve rod on the inner surface of the valve body, and corresponding pistons are arranged on the valve rod. Acting force generated when a medium in the valve acts on the pistons and the section of the valve core is balanced out mutually, driving force needed by an actuator is reduced and energy is saved, the high pressure difference bearing capability of the valve is improved, and the valve core is free from the phenomenon of oscillating when the high-pressure difference is generated. The valve body is simple in structure, compared with a traditional medium flow channel, a Z-shaped medium flow channel is simple, small in damping coefficient, and therefore energy consumption of the valve is reduced; and processing in the valve body is convenient and easy and the blocking phenomenon of the medium is reduced due to arrangement of the Z-shaped medium flow channel and the piston guide stroke holes.

The invention relates to an airplane steering engine electro-hydraulic loading system synchronously controlled through the parallel connection of double valve controlled hydraulic cylinders. The airplane steering engine electro-hydraulic loading system synchronously controlled through the parallel connection of the double valve controlled hydraulic cylinders comprises a first controller, a secondcontroller, a third controller, a first servo valve, a second servo motor, a third servo motor, a fourth servo motor, a first hydraulic cylinder, a second hydraulic cylinder, two rubber metal buffer springs, two force sensors, two first position sensors and two second position sensors. According to the airplane steering engine electro-hydraulic loading system synchronously controlled through the parallel connection of the double valve controlled hydraulic cylinders provided by the invention, not only is the frequency response of the loading system improved, but also the forced flows in the hydraulic cylinders are reduced; and meanwhile, by adopting parallel connection control of the two hydraulic cylinders, the output force of a single hydraulic cylinder is reduced, the cost is reduced, meanwhile, the redundant force in the system is reduced, and the stability and the loading accuracy of the loading system are improved.

The invention discloses a self-seal hard dual-valve seat of a balance-type valve core. The self-seal hard dual-valve seat comprises a valve cage, a regulating sleeve, a seal ring and the valve core; the seal ring is arranged between the valve cage and positioning steps of the regulation sleeve; and the inner diameter part of the sear ring and the valve core are in contact seal. According to the invention, the seal effect is realized through the deformation of the seal ring through the pressure difference of media at two sides of the seal ring.

The invention provides a test device of an oil and gas suspension system. The test device comprises a foundation, the oil and gas suspension system, an excitation hydraulic cylinder, a pressure sensor connected with the excitation hydraulic cylinder and a hydraulic servo control system used for controlling motion of the excitation hydraulic cylinder, wherein the oil and gas suspension system comprises one or more oil and gas suspension cylinder sets mounted on the foundation and an energy storage device connected with the oil and gas suspension cylinder set through a pipeline, the two oil and gas suspension cylinders of the oil and gas suspension cylinder set are connected in an opposite mode through a connection head, the excitation hydraulic cylinder is mounted on the foundation, and a cylinder lever of the excitation hydraulic cylinder is parallelly connected with the middle portion of the connection head. The test device is advantaged in that test analysis on inclination performance of the one or more oil and gas suspension cylinder sets is realized through the one excitation hydraulic cylinder, and test cost is substantially reduced.

Methods and systems are provided for driving one or more force coils. A system for driving force coils is provided including a PWM drive coupled to a first coil and a linear drive coupled to a second coil. The PWM drive efficiently drives the first coil to apply a first force. The linear drive drives the second coil to apply a second force that is substantially noise-free. The first force is greater than the second force.

The invention provides a test device of an oil and gas suspension system. The test device comprises a foundation, the oil and gas suspension system, an excitation hydraulic cylinder, a pressure sensor connected with the excitation hydraulic cylinder and a hydraulic servo control system used for controlling motion of the excitation hydraulic cylinder, wherein the oil and gas suspension system comprises one or more oil and gas suspension cylinder sets mounted on the foundation and an energy storage device connected with the oil and gas suspension cylinder set through a pipeline, the two oil and gas suspension cylinders of the oil and gas suspension cylinder set are connected in an opposite mode through a connection head, the excitation hydraulic cylinder is mounted on the foundation, and a cylinder lever of the excitation hydraulic cylinder is parallelly connected with the middle portion of the connection head. The test device is advantaged in that test analysis on inclination performance of the one or more oil and gas suspension cylinder sets is realized through the one excitation hydraulic cylinder, and test cost is substantially reduced.

The invention discloses a high temperature large-caliber flue gas pipeline inlet airtight device used in cement industry. The airtight device comprises a valve body, a valve cover, an actuating arm assembly, a bearing part, a pin shaft, a sealing part, a driving part, a high temperature resistant layer and a pressure relief part; an inclined sealing surface is arranged at the inner opening of the valve body; a mounting groove is arranged on the upper end surface of the valve body; the sealing part is arranged in the mounting groove; the high temperature resistant layer is lined on the inclined sealing surface and the inner wall of the mounting groove; the high temperature resistant layer is lined on the inclined sealing surface and a lower plane in contact with the sealing part; the valve cover is connected with the actuating arm assembly via the pin shaft; a pin shaft hole is U-shaped; the pressure relief part is installed on the valve cover; the pressure relief part comprises a pressure relief part valve cover connected with the actuating arm assembly; the actuating arm assembly is connected with the bearing part; and the bearing part is connected with the driving part. The airtight device relieves the pressure firstly, reduces the acting force of the negative pressure to the valve cover, save manufacturing cost, and has safe and reliable structure and good sealing property.

The invention relates to a reinforced synchronizer which comprises a joint sleeve, a spline hub, a positioning sliding block, a synchronizing ring and a target retaining gear. The reinforced synchronizer is characterized in that a reinforced ring is arranged between the synchronizing ring and the spline hub. An outer reinforced slant face is arranged on a reinforced bump at the outer end face of the synchronizing ring of the synchronizer. The reinforced synchronizer has the advantage of producing axial reinforcement in a synchronizing stage and amplifying output power of a drive device. When the reinforced synchronizer is applied to a manual speed changer, working intensity of a driver can be reduced and when the reinforced synchronizer is applied to the automatic speed changing technology, energy loss in a gear shifting process of a gear shifting actuator can be reduced. Meanwhile, the size of the gear shifting actuator can be further reduced, and a good technical base is provided for improvement of gear shifting quality. Compared with the prior art, the reinforcement efficacy is high and obvious economic benefits and social benefits can be produced.

The invention provides a low-noise high-pressure-difference adjusting valve which comprises a valve body, a valve cover, a sleeve, a valve element and a valve rod. The valve cover is connected to the top of the valve body through bolts, the sleeve is clamped between the valve cover and the valve body, a plurality of first-kind adjusting holes are formed in the upper portion of the side wall of the sleeve, a plurality of second-kind adjusting holes are formed in the lower portion of the side wall of the sleeve and the bottom face of the sleeve, the valve element is arranged in an inner cavity of the sleeve and can vertically move in the inner cavity of the sleeve, so that the low-noise high-pressure-difference adjusting valve is closed or opened, a plurality of pressure balance holes are formed in the valve element in the axial direction of the valve element, and the valve rod penetrates through a center through hole in the valve cover and is connected with the valve element. The low-noise high-pressure-difference adjusting valve is simple, compact and reasonable in structure, small in size and light, and has the advantage of being capable of bearing a high pressure difference and a high leakage level under the condition of the same drive source.

The invention relates to a proportional pressure brake control valve which comprises a valve body and an asymmetric piston located in the valve body. The Asymmetric piston comprises a cylindrical part and a piston part which is vertically and fixedly connected with the cylindrical part; the piston part comprises a first piston body, a second piston body and a fixed shaft which is fixedly connected between the first piston body and the second piston body; a first oil return channel is formed between the firs piston body and the inner wall of the valve body, and a second oil return channel is formed between the second piston body and the inner wall of the valve body; the first oil return channel is communicated with a first chamber formed by the valve body and the first piston body, and the second oil return channel is communicated with a second chamber formed by the valve body and the second piston body. With the adoption of the proportional pressure brake control valve, output force of a driving mechanism can be reduced, and the size and the weight of the driving mechanism are reduced accordingly.

The invention relates to a high-power electro-hydraulic control system for a compression-shear testing machine. The system comprises: a loading execution unit, a hydraulic power unit and an electric drive unit; the upper loading plate of the compression-shear testing machine is driven by the loading execution unit. It moves in different directions with the lower loading plate, provides hydraulic oil for the loading execution unit through the hydraulic power unit, provides electricity for the loading execution unit and the hydraulic power unit through the electric drive unit, and controls the running speed of the loading execution unit. The hydraulic-electric hybrid drive is used to jointly drive the loading plate to move, so that the output force of the hydraulic transmission part is reduced, and the corresponding size is also reduced, so that the flow provided by the accumulator is reduced, thereby reducing the number of accumulators required, and Through the cooperation of the electric drive unit and the loading execution unit, the braking kinetic energy of the working device is efficiently recovered.

The invention discloses a three-way control valve for a high-pressure place. The three-way control valve comprises a valve body, a guide cover, a valve element, a valve rod, an upper valve seat, a balancing cylinder, a guide ring, an O-shaped sealing ring, a piston, a valve cover, a filler, a lower valve seat, a connecting pipe and an execution mechanism, wherein the valve body is provided with a flow passage port A, a flow passage port B and a flow passage port C. When the three-way control valve for the high-pressure place works, the valve element and the valve rod are driven by the execution mechanism to move up and down between the upper and lower valve seats in the valve body to automatically control two paths of fluids to be combined into one path of fluid or split one path of fluid into two paths of fluids, so that the unbalanced force of a medium on the valve element is eliminated, and the output force of the execution mechanism is greatly reduced; the guide ring is arranged on the piston, and the guide cover is arranged at the bottom end of the valve element, so that a guide function is realized, the valve can more stably work, the problems of difficulty in opening and closing, instable movement and great vibration in a running process and the like when the valve is used for the high-pressure place are solved, and the requirements of use under a high-pressure working condition are met.