920results about How to "Cushion the shock" patented technology

The invention discloses a single-leg robot jumping mechanism with an active ankle joint and a bionic foot. The mechanism comprises a mechanism body, a thigh, a crus and the foot which are sequentially hinged; a direction driving device for driving the thigh to rotate is arranged at the hinged position of the mechanism body and the thigh; a first jumping driving device for driving the crus to rotate is arranged on the thigh; a crus top board hinged to the lower end of the thigh is arranged at the upper end of the crus; a knee joint transmission rod is arranged between the crus top board and the first jumping driving device; the two ends of the knee joint transmission rod are hinged to the crus top board and the first jumping driving device correspondingly; a second jumping driving device for driving the crus to rotate is arranged at the hinged position of the thigh and the crus; and a buffering mechanism is arranged between the crus and the foot. The problems that in the prior art, the energy storage capacity is poor during jumping of a robot, cooperative work of a hip and a knee cannot be achieved, and an ankle joint motor cannot be protected against impact during jumping are solved.

The invention discloses an underwater cable folding and unfolding device, it consists of cable, unfolding equipment and folding equipment, among them the unfolding equipment and folding equipment compose the main body of the invention; one end of cable is twined in the folding equipment interior after passing through the unfolding equipment. The invention can ensure cable is arranged in the cable storing space ordered, uniformly and densely in underwater environment, and avoid cable twined each other due to the attack of water flow in the folding and unfolding course, and also can reduce cable stretching force changing and release the attack to folding and unfolding device from cable.

The invention relates to a method for avoiding ping-pang switch, which comprises: based on the signal quality of present network of user terminal and target switch network, fixing the maximum allowed switch frequency; judging if allowing said switch, the real switch frequency is in the maximum value, if it is in said maximum value, allowing this switch; or else, rejecting said switch. The invention also discloses a device with ping-pang switch filter function whose network switch alarm module has ping-pang switch filter function. The invention can effectively reduce the ping-pang switch frequency generated at the edge of dual-network cover, and release the impact on the network processing ability when leading in the region transfer calling function.

The invention discloses an energy feedback type damper which can combine piezoelectric ceramic and magnetorheological fluid, wherein the energy feedback type damper can supply electric energy which is generated by piezoelectric electricity generation units due to vibration to the magnetorheological fluid for shock absorption. The energy feedback type damper comprises a cylinder body, a piston rod, the upper piezoelectric electricity generation unit, the lower piezoelectric electricity generation unit, an electric energy extraction and storage unit, a pressure sensor and a controller. The upper piezoelectric electricity generation unit is installed outside a rod body in a sleeved mode. An upper partition plate is arranged below the upper piezoelectric electricity generation unit in an overlapping mode. The lower piezoelectric electricity generation unit is arranged on the inner bottom surface of the cylinder body. A lower partition plate is arranged on the lower piezoelectric electricity generation unit in an overlapping mode. An upper magnetorheological fluid chamber containing magnetorheological fluid is formed between the upper partition plate and a piston body. A lower magnetorheological fluid chamber containing magnetorheological fluid is formed between the piston body and the lower partition plate. The piston body is provided with a plurality of throttling holes. An excitation coil mechanism is installed in the piston body. The upper piezoelectric electricity generation unit and the lower piezoelectric electricity generation unit are connected with the electric energy extraction and storage unit. The pressure sensor is connected with the controller. The electric energy extraction and storage unit is connected with the excitation coil mechanism through the controller. The pressure sensor is installed on the upper partition plate.

The invention discloses a distributed type control system of a hydraulic quadruped robot and a control method. The distributed type control system of the hydraulic quadruped robot comprises a brain system, the brain system is connected with an environment sensing system, a navigation information system and a voice interaction system to obtain data, the brain system transmits the obtained data to a cerebellar system, the cerebellar system controls a leg control system through a first CAN bus, and the cerebellar system is further communicated with an energy and power control system and an interpersonal interaction panel through a second CAN bus. According to the distributed type control system of the hydraulic quadruped robot, the previous integral control idea of the quadruped robot is changed, and the control method of the quadruped robot is divided into intelligent control, body motion control and leg motion control. The control method forms an organic whole by adopting a distributed type structure, the processor of each part works under reasonable calculation, the power consumption of the system is reduced, and the real-time performance and the reliability of the control system are greatly improved.

The invention provides an automotive front wheel independent-control and hydraulic-steering system having a redundancy function. The system is composed of a steering wheel module (21), a hydraulic transmission system (18), hydraulic steering execution modules (15), an electronic control module (13), a steering wheel (1), a steering shaft (2), a gear (19), a rack (3), pistons (20), hydraulic oil cylinders (4), oil pipes (6), a flow control valve (17), electric three-way valves (7), executing oil cylinders (8), magnetic control devices (9), compensation oil tanks (10), switch type control valves (14), steering cross pull rods (16), an electronic control unit (12), a turning angle sensor (22), a torque sensor (5) and electric control wiring harnesses (11). The system makes full use of the advantage of the variable hydraulic transmission direction and achieves independent steering and accurate control of front wheels. When the control system breaks down, turning wheels can be directly controlled by steering wheel power through hydraulic path connection, and the system has a fault-tolerant function.

The embodiment of the invention discloses a handheld electronic product, which comprises cover plate glass and a shell, wherein the shell is a square shell; borders are arranged at the four corners of the shell; the left side and the right side of the shell are free from borders; the cover plate glass is embedded into the shell in a contracting way; the back face of the cover plate glass is connected with the shell; and the borders arranged at the four corners of the shell are higher than the back face of the cover plate glass. According to the embodiment of the invention, the width of the handheld electronic product can be reduced, and installing procedures are reduced.

The invention discloses a bionic mechanical leg imitating the motion function characteristic of an ostrich hind limb. The mechanical leg comprises a body, a hip joint motion mechanism, a knee joint motion mechanism and an ankle joint motion mechanism. The hip joint motion mechanism is composed of a motor and a crank-rocker mechanism, wherein the crank-rocker mechanism comprises a crank, a femur and a connecting rod. The knee joint motion mechanism comprises the femur, a first spring, a tibia, a metatarsus, a brake cable, a lower fibula, a second spring, an air cylinder and an upper fibula. The ankle joint motion mechanism comprises the metatarsus, a first apotelus bone, a second apotelus bone, a third apotelus bone, a third torsional spring, a second torsional spring and a first torsional spring. The ostrich hind limb capable of efficiently moving serves as the bionic prototype, through combination of testing on hind limb motion parameters during running of an ostrich and biological anatomic analysis, the mechanical leg imitating the ostrich hind limb is obtained through optimization design according to the tendon-bone and muscle-tendon interaction mechanism of the ostrich, and the mechanical leg is simple in structure, safe, reliable, low in vibration, and capable of efficiently saving energy.

The invention relates to an automatic passing neutral section control system and method for an electric motor train unit. The system comprises a traction converter and a transmission control unit, wherein the traction converter comprises a contactor control circuit, a rectifying module, a filtering intermediate direct current circuit, an auxiliary inverting module and an inverting module, wherein the filtering intermediate direct current circuit is connected with the contactor control circuit to finish charging under the control of the transmission control unit; under the control of the transmission control unit, the rectifying module is used for rectifying single-phase power-frequency power supply voltage into a rated intermediate direct current voltage needed by the traction converter during normal working; the inverting module and the auxiliary inverting module are respectively connected with the filtering intermediate direct current circuit and get electricity; the inverting module is used for inverting intermediate direct current into three-phase voltage to control a motor; and the auxiliary inverting module is used for inverting the intermediate direct current into the three-phase voltage for auxiliary converting load to use during normal working. The method is implemented on the basis of the system. The invention is advantaged in that the integration degree of the system is high, the automation degree of the system is high, the impact on a train in the automatic passing neutral section process can be effectively relieved, the comfort of the train is improved and the like.

The invention provides a network assisting management device and a concurrent management device that are applied to a video management server and front-end equipment respectively. The concurrent management device comprises an information collecting unit and an access management unit, wherein the information collecting unit is used for obtaining an IP (Internet Protocol) address and an access port identification of an access switch in a signalling message of the front-end equipment, and the access management unit is used for generating a network management command of an access port corresponding to the video front-end equipment, and carrying the network management command in a network management message to be sent to the access switch. The assisting management device comprises a neighbor listening unit and an information reporting unit, wherein the neighbor listening unit is used for obtaining the IP address and the access port identification of the access switch from the access switch through a neighbor discovery protocol, and the information reporting unit is used for carrying the IP address and the access port identification of the access switch in a video monitoring signalling message to be sent to the video management server. According to the network assisting management device and the concurrent management device, the access switch is managed through linkage, and a monitoring service and a network are fused effectively.

The present invention provides a flow detector for a wire rope, which can moderate the effect of the force generated by the deformation contained in the wire rope or the strand exposed out from the wire rope. The flaw detector for wire rope comprises the following components: a magnetizing mechanism which magnetizes the wire rope (1); two sensor bases (2, 3) which are configured to cover the circumferential direction of the part of wire rope (1) magnetized by the magnetizing mechanism and respectively contain magnetic sensors (2a, 3a) that detect the leakage flux leaked from the damaged part generated by the part of the wire rope (1). The sensor bases (2, 3) is rotatably equipped relatively to the moving in the length direction of the wire rope (1), wherein the sensor base (3) is rotatably provided through two elastomers (9a, 9b), and is pushed and pressed and kept on the wire rope (1) through the elastomers (9a, 9b).

The invention discloses a proportional cartridge valve with variable flow gain, which comprises a valve sleeve, a hollow valve core with a damping hole, a control cover plate, a valve cover, a displacement transducer and a pilot control valve, and is characterized in that: the lower part of the hollow valve core is arranged in the valve sleeve and is linearly sealed with the valve sleeve; the upper part of the hollow valve core is matched with the control cover plate; the upper end of the control cover plate is connected with the valve cover; the displacement transducer is arranged on the valve cover; the pilot control valve is arranged on a side face of the control cover plate; a semicircular hole is machined on a port at the bottom of the valve core; and four symmetrical waist-shaped holes are machined on the valve sleeve. The invention has the advantages that: the proportional cartridge valve has small valve opening, low flow gain and high linearity, and high-precision linear control at low flow can be realized; the valve has large valve opening, high flow gain and high linearity, and high-precision linear control at high flow can be realized; and due to low flow fluctuation and low pressure shock of the valve, the service life of the valve can be prolonged.

The invention relates to a thermal insulation device for lithium batteries. The thermal insulation device comprises a body and a cover body, wherein the cover body covers one end of the body; the body comprises a heat conduction layer, a water bag layer, a top thermal insulation layer, a bottom thermal insulation layer and a shell, wherein the heat conduction layer is provided with at least one accommodating cavity for accommodating the lithium battery; the water bag layer covers the periphery of the heat conduction layer; the water bag layer is mainly composed of a film bag and pure water filled in the film bag; the top thermal insulation layer and the bottom thermal insulation layer are respectively arranged on two ends of the heat conduction layer; the top thermal insulation layer is provided with channels which are communicated with the accommodating cavities in a one-to-one correspondence manner; the shell is used for accommodating the water bag layer, the heat conduction layer, the top thermal insulation layer and the bottom thermal insulation layer. The thermal insulation device is simple in structure and low in cost; the temperature of the heat conduction layer cannot be continuously reduced along with the temperature of the environment, so that the charging/discharging performance of the lithium batteries are not affected by low-temperature environment; the water bag layer can absorb most heat, thus effectively relieving the impact of the high-temperature environment on the lithium batteries.

The invention provides a pressure bearing device. The pressure bearing device comprises a rear fixing seat, a support seat, a slide pressure block seat and a front fixing seat orderly formed, all parts are connected together through the first guide column, the support seat and the slide pressure block seat can slide along the axial direction of the first guide column; a first pressure bearing device is formed above the rear fixing seat, a support shelf used for supporting and locating the motor rotor workpiece is formed above the support seat, a second pressure bearing device is formed above the slide pressure block seat; the first pressure bearing device comprises a rear bearing tail top and a rear bearing thimble arranged at the axis of the rear bearing tail top and connected with the rear bearing tail top in a slide mode, the rear bearing thimble can extend out or retract in the rear bearing tail top, the rear bearing thimble is used for hanging the bearing and the magnetic ring, the second pressure bearing device comprises a bearing pressure head. The pressure bearing device adopts horizontal type structure, during the pressing process, the force for the magnetic ring and the bearing is even and stable for reducing the damage reject ratio for the bearing, reducing the labour intensity for the operators and reducing the cost.

The invention provides a carriage hinge device and a streetcar. The carriage hinge device comprises a loading frame, a lower hinge assembly and an upper hinge assembly. The lower hinge assembly comprises a first oscillating bearing, a second oscillating bearing, a first connecting plate and a second connecting plate, and the connecting plates are hinged to the loading frame through the oscillating bearings. An upper installing shaft is arranged at the upper portion of the loading frame and provided with a rubber bearing. The upper hinge assembly comprises two first connecting rods, a second connecting rod, two first installing bases and two second installing bases; one ends of the first connecting rods are hinged to the loading frame through the rubber bearing, and the other ends of the first connecting rods are hinged to the first installing bases through a third oscillating bearing; the two ends of the second connecting rod are hinged between the two second installing bases through a fourth oscillating bearing, and one of the second installing bases is fixed to the upper portion of the loading frame. The reliability of the streetcar is improved.

The invention discloses a battery charging control device. On the basis of the prior art, a feed-forward compensating structure composed of an SOC (Silicon on Chip) prediction module and a feed-forward compensation control module is additionally arranged; by means of the SOC prediction module and the feed-forward compensation control module, reference quantity correction direct current delta idc/reference quantity correction direct-current delta udc and a controlled quantity compensation value delta iq are added in a traditional control structure so as to consider internal resistance changes of a battery in a control loop, so that the charging is more stable so as to reduce battery losses and achieve the purpose of prolonging the service life of the battery; meanwhile, because an internalloop control period is far smaller than an external loop control period, a q component iq of an alternating-current side current can be immediately modified into an alternating-current side referencecurrent value by modifying an alternating-current reference current iq_ref into iq<*>=iq_ref+delta iq, so that a target is controlled, and the fluctuations of the charging currents of the battery arereduced.

The invention discloses a parking connecting structure of a suspension type monorail vehicle and the suspension type monorail vehicle. The parking connecting structure of the suspension type monorail vehicle comprises a connecting rod, a connecting seat and a connecting beam, wherein the connecting rod is used for transmitting vertical loads, longitudinal traction brake force and transverse swinging force between a suspension type vehicle body and a traveling component, the upper end of the connecting rod is used for being fixedly connected with the traveling component, the lower end of the connecting rod is hinged to the connecting seat, and the connecting seat is fixedly connected with the connecting beam. The parking connecting structure of the suspension type monorail vehicle realizes non-rigid connection between the suspension type monorail vehicle body and a bogie, and internal stress caused by movement of the suspension type monorail vehicle body is solved.

An elevator control device comprising: an overspeed detection device for judging whether the speed of an elevator car at a predetermined position is less than or equal to an overspeed corresponding to a distance from an end, and a deceleration stop for forcibly performing deceleration and stopping when the overspeed is exceeded device, wherein the overspeed includes a first overspeed and a second overspeed, the deceleration stop device has a comparator and a motor controller, the comparator compares the second overspeed with the speed of the elevator car, and when the second overspeed is reached When the brake signal is sent to the mechanical brake, the motor controller will send a control command corresponding to the difference between the first overspeed and the elevator car speed to the motor of the winch when the first overspeed is reached. When the second overspeed is reached, a control command is sent to the motor corresponding to the difference between the second overspeed and the speed of the elevator car.

The invention discloses a new energy automobile refrigeration control method. The new energy automobile refrigeration control method comprises the following steps that (a) whether refrigeration switches of a heat ventilation air conditioner and a battery are in an on state or not is judged; (b) when the refrigeration switch of the heat ventilation air conditioner is in the on state, the step (c) to the step (f) are executed and when the refrigeration switch of the heat ventilation air conditioner is in an off state, the step (g) to the step (i) are executed; (c) the compressor initial rotatingspeed is determined according to the rotating speeds corresponding to environmental temperature and set compressor target temperature; (d) the corresponding compressor rotating speed is set accordingto an air blower air volume switch to obtain a first corrected rotating speed of a compressor; (e) a second corrected rotating speed of the compressor is obtained through P-item compensation and I-item compensation ways; (f) a final corrected rotating speed of the compressor is obtained according to the first corrected rotating speed of the compressor and the second corrected rotating speed of the compressor; (g) the compressor initial rotating speed is determined according to the rotating speeds corresponding to the environmental temperature and collected cell temperature; (h) the second corrected rotating speed of the compressor is obtained through P-item compensation and I-item compensation ways; and (i) the final corrected rotating speed of the compressor is obtained according to thecompressor initial rotating speed and the second corrected rotating speed of the compressor.