161results about How to "Reduce the impact of collision" patented technology

The invention provides a UUV dynamic obstacle avoidance method based on a speed obstruction method and relates to a UUV dynamic obstacle avoidance method which solves the problem that an existing UUV route planning method is poor in accuracy when avoiding moving obstacles. According to the method, movement uncertainty of obstacles is converted into position uncertainty; according to movement uncertainty of the obstacles, the minimum safety angle alpha 1 and the maximum safety angle alpha 2 are obtained; the comprehensive speed danger degree, caused by the obstacles, of a UUV is obtained, , speed space of UUV movement is determined according to UUV dynamics constraint rule, and according to position uncertainty of the obstacles and the largest action range of the obstacles, the minimum collision time of the UUV and all the obstacles is obtained; by means of the comprehensive speed danger degree of the UUV and the minimum collision time between the UUV and all the obstacles, an optimized target route function of the UUV is obtained; by means of the speed obstruction method, the minimum value point of the target function is found to serve as the next way point of UUV movement, and a UUV movement path is planned. The UUV dynamic obstacle avoidance method is suitable for UUV dynamic obstacle avoidance.

The invention discloses an engineering machine and a telescopic arm. The telescopic arm comprises a telescopic cylinder, a multi-section arm, a hydraulic system, at least one mechanical limit mechanism, a controller and a position sensor, wherein the movable end of the telescopic cylinder is telescopic in the extending direction of the telescopic arm; the hydraulic system is connected with the telescopic cylinder through a hydraulic oil circuit; the mechanical limit mechanism is matched with the movable end of the telescopic cylinder; the position sensor corresponds to the mechanical limit mechanism and is used for detecting the position of the movable end of the telescopic cylinder; and the controller outputs a control signal to a proportional control valve according to a predetermined strategy, so that the speed of the movable end of the telescopic cylinder is reduced. Through the technical scheme, the telescopic speed of the telescopic cylinder can be reduced according to the control signal, and the speed of the movable end is reduced to a low value or the movable end just stops at a position corresponding to the mechanical limit mechanism when the movable end arrives at the corresponding mechanical limit mechanism, so that collision impact between the movable end and the mechanical limit mechanism can be reduced or avoided.

A semiconductor device and a manufacturing method therefor wherein a wire for coupling an inner lead and a semiconductor chip with each other can be prevented from being electrically short-circuited to any other conductive part are provided. An inner lead portion has a tip arranged outside the outer circumferential end of the semiconductor chip as viewed on a plane. A power supply bar has a jutted portion extended between the outer circumferential end of the semiconductor chip and the tip of the inner lead portion as viewed on a plane. The upper face of the jutted portion is in a position lower than the upper face of the tip of the inner lead portion. A bonding wire for electrically coupling the semiconductor chip and the inner lead portion with each other has a bent portion outside the outer circumferential end of the semiconductor chip as viewed on a plane.

Vehicle door (10) is provided which includes an inner door panel (11) made of a magnesium alloy. The magnesium alloy has relatively small toughness although it is light in weight. Passenger protecting cover (51) made of a material having greater toughness than the magnesium alloy is fixed to a portion of the inner door panel facing a seat (40) or its vicinity in overlapped relation to that portion. Such arrangements can reduce the weight of the vehicle door and enhance passenger protecting performance of the door.

Provided is an active hood apparatus for a vehicle including a main frame, a hood latch assembly, and a hood rise and fall device. The main frame is fixed to a vehicle body. The hood latch assembly is disposed at a back side of the main frame to lock and release a hood. The hood rise and fall device is disposed between the back side of the main frame and the hood latch assembly to move the hood latch assembly substantially vertically by a control signal of a controller that receives a sensing signal from a pedestrian collision sensor.

The invention discloses a cargo conveying system of an instant noodles vending machine. The cargo conveying system is arranged inside a vending machine box body and the movement of conveying barreled instant noodles is controlled by a control system; a bundle barrel type cargo channel structure system is formed by the cargo conveying system and an annular columnar channel, a middle barrel of the bundle barrel type cargo channel structure system is a hollow barrel and parallel cargo channels are arranged on the periphery in parallel, so that the barreled instant noodles which are added from inlets of the tops of different cargo channels can freely slip off; a horizontal propelling device is arranged below the annular columnar channel, namely the horizontal pushing device is arranged in a central hollowed region of a cargo accepting chassis; the cargo horizontal pushing device comprises a cargo pushing motor, a retractable rod and a cargo pushing plate; an angle controller is further arranged above the annular columnar channel; the angle controller comprises an angle control motor; and the angle control motor is used for controlling the pushing direction of the retractable rod through a vertical long shaft so that the retractable rod is horizontally swung to the position of the instant noodle which is selected by a purchaser. According to the cargo conveying system of the instant noodles vending machine disclosed by the invention, the utilization rate of a cargo storage space of the vending machine is sufficiently expressed, a phenomenon that products fall down does not happen and the instant noodles are effectively prevented from being broken.

The invention discloses a vending machine for vending delicate goods. The vending machine comprises a vending machine body. Goods display stands, a goods conveying system and a control system are mounted in the vending machine body, and a man-machine interactive system is arranged on a front panel of the vending machine body in an embedded manner. The goods conveying system comprises a goods pusher and a goods receiver, and the goods pusher comprises pusher motors, retaining plates and screw rods, a pusher motor is arranged along each goods passage, a transmission spindle of each pusher motor is connected with each screw rod through a coupler, nuts of the screw rods are fixedly connected with the retaining plates, the pusher motors convert rotation into linear displacement through the screw rods, and goods are pushed along the goods passages by the retaining plates directly. The goods receiver comprises a transverse goods receiving tank, a goods receiving motor and a belt transmission system. Collision and impact of goods under presale, caused in goods conveying process, can be reduced effectively, original intact state of the goods is kept, and the vending machine is suitable for automatic vending of the delicate goods such as fruits, glass filling goods and other goods with low collision strength.

A bridge damping blocking tenon device can satisfy the horizontal lateral-pushing resisting rigidity of a bridge body under normal service condition of vertical direction, crosswise direction and longitudinal direction under normal impact load, and further can consume energy in the vertical direction, so as to effectively improve the earthquake resistance of a bridge. The bridge damping blocking tenon device comprises a sleeve, elastic steel plates and a damping blocking tenon; the damping blocking tenon comprises a lower conical column structure section and an upper rectangular structure section; the upper parts of the upper rectangular structure section and the lower conical column structure section are arranged in the rectangular inner cavity of the sleeve; the semi-lunar elastic steel plates are arranged on two sides of the upper part of the lower conical column structure section in the transverse direction of the bridge, the upper ends of the elastic steel plates are blocked in the intersection part of the upper rectangular structure section and the lower conical column structure section, and the lower ends of the elastic steel plates are blocked between the bottom surface of the rectangular inner cavity of the sleeve and the lower conical column structure section. The side wall of the sleeve is fixedly connected to a base plate and is connected with the transverse side wall of the bridge body by high-strength bolt assemblies. The lower end of the lower conical column structure section is fixedly connected with a mounting base and is fixedly connected with a pier stud by high-strength bolt assemblies.

The invention discloses an installation device for an offshore wind generating set. The installation device comprises a positioning mechanism, a fan, a six-dimensional parallel mechanism, a tower pedestal platform and a crane ship; the six-dimensional parallel mechanism is fixed on the tower pedestal platform through the positioning mechanism; the fan penetrates through the six-dimensional parallel mechanism and is fixed through the six-dimensional parallel mechanism; and the crane ship is connected with a fixing mechanism. The six-dimensional parallel mechanism with three working units is adopted in the installation device and does not have a working dead angle, so that deflection of positive deviation and negative deviation of a fan tower cylinder can be realized, and bolt holes in a bolt hole cylinder tower pedestal on fan tower cylinder flanges are quickly aligned. The six-dimensional parallel mechanism can play a role in buffering when the fan tower cylinder declines, so that collision impact between the fan tower cylinder and the tower pedestal is reduced. The six-dimensional parallel mechanism has a series of advantages of high rigidity, high speed, high bearing capacity, small errors, high precision, good power performance and the like and is easy to control, so that positioning and buffering integration of the fan tower cylinder can be realized, and the manufacturing cost is greatly reduced.

The invention discloses an energy absorption device and method for a child safety seat restraint strap. The device comprises an energy absorption barrel, hook pieces, springs, a piston, honeycomb aluminum and a piston rod; the top of the energy absorption barrel is sealed, and an opening is formed in the bottom of the absorption barrel; the springs, the piston and the honeycomb aluminum are located in the energy absorption barrel; the tops of the springs are fixedly connected with the top in the energy absorption barrel, and the bottoms of the springs are fixedly connected with the top surface of the piston; a cavity between the bottom surface of the piston and the bottom of the energy absorption barrel is filled with the honeycomb aluminum; the top of the piston rod is fixedly connected with the bottom surface of the piston, and the bottom of the piston rod penetrates out of the opening in the bottom of the energy absorption barrel; the bottom of the piston rod is fixedly connected with a hollow block, and the hook pieces are arranged on the top of the outer side of the energy absorption barrel. When collisions occur, the forward movement of a child drives the shoulder belt restraint strap to move forward, and collision impact borne by the child is greatly reduced due to friction among the honeycomb aluminum, the piston and the wall of the energy absorption barrel. The energy absorption device is simple in structure, remarkable in energy absorption effect and convenient to manufacture.

Disclosed is a waste gate assembly for a turbocharger that is provided at a side of a turbine into which an exhaust gas is introduced, and bypasses some of the exhaust gas introduced into the turbine to an outside. The waste gate assembly may include a boss that has a hole for discharging the exhaust gas and is provided at a waste gate main body, a valve that is provided to spherically come in contact with a valve mounting surface of the boss and selectively opens or closes the hole of the boss, and an actuator that is connected to the valve, and provides a rotational force to the valve.

A method and apparatus are provided for transmitting data packets in a communication network using a plurality of radio channels. The network is organized into a plurality of communication layers including a data link layer MAC and a physical layer PHY. The method includes aggregating data packets to be transmitted to a single recipient, in the MAC layer, outputting at least two aggregated packets, with which a single header of the PHY layer is associated. At least two of the radio channels are concatenated to form a concatenated channel. The aggregated packets are simultaneously transmitted respectively over at least two separate concatenated sub-channels, one concatenated sub-channel including at least one of the radio channels of the concatenated channel.

The present invention provides an air suction device for a threading apparatus that creates an air flow to be directed toward a needle eye in order to guide a yarn through the eye. The air suction device is comprised of: (a) an air device externally provided for generating reduced pressure; (b) an air suction pipe connected to the external air device; and (c) an air path leading to a front portion of the air suction pipe. The air path is comprised of a pair of leaf springs to horizontally hold a needle, and upper and lower elastic members which run parallel between the pair of leaf springs. To effectively direct air into the needle eye, an air-tight environment is provided around the needle eye: (1) air entry above and beneath the needle eye is prevented by the body of the needle; (2) air entry from both sides of the needle is prevented by the pair of leaf springs that hold the needle; and (3) air inflow behind the needle is prevented by rear-positioned elastic members which tightly fit the needle.

The invention provides a six-dimensional installation device for an offshore wind generating set. The six-dimensional installation device for the offshore wind generating set comprises a positioning mechanism, a wind turbine, a six-dimensional parallel mechanism and a tower footing platform. The six-dimensional parallel mechanism is fixed to the tower footing platform through the positioning mechanism. The wind turbine penetrates through the center of the six-dimensional parallel mechanism and is fixed to the tower footing platform through the six-dimensional parallel mechanism. Structural connection of the six-dimensional parallel mechanism is in a 6USP mode; in other words, the six-dimensional parallel mechanism comprises six branched chains, a U-shaped pair is arranged at the upper end of each branched chain for connection, a ball pair is arranged in the middle of each branched chain for connection, and a movable pair is arranged at the lower end of each branched chain for connection. According to the six-dimensional installation device, the six-dimensional parallel mechanism is adopted, and the offshore wind generating set is rapidly positioned and installed; when transverse hydraulic rod sets work, large torque can be provided, so that bolt holes in a wind turbine tower drum flange and bolt holes in tower footing can be rapidly aligned.

The vane for a wind energy installation is equipped with collecting devices and comprises at least two parts so that a hollow space is formed, in which devices are placed for collection of dust, particles or loose objects. The collecting dvices consist of a container with a funnel-shaped opening, with a valve or adhesive surfaces on the inside. The devices may also be a kind of filter positioned between chambers inside the vane.

An impact relieving device includes an impact portion and a fixed portion. The impact relieving device has an integral structure that is formed by one-step extrusion molding. The impact portion includes an inner layer and an outer layer. The inner layer and the outer layer are separated by a separation rib to form a cavity. The outer layer of the impact portion is arc-shaped, and an arc surface protrudes outwards. The impact relieving device has low manufacturing cost, is easy to manufacture and install, has a simple structure, and can effectively relieve an impact force.

The invention belongs to the technical field of debris flow prevention dams and discloses a prismoid pile and a prismoid type pile forest dam. The prismoid pile comprises a prismoid pile body and a bottom foundation fixed on the bottom surface of the prismoid pile body. The prismoid pile body is fixed on the bottom surface of a debris flow riverbed through the bottom foundation. The water facing surface of the prismoid pile body is two buffer surfaces formed after bending in the flow direction of the debris flow, and the bending lines are distribution buffer edges obliquely arranged in the flow direction of the debris flow. The prismoid type pile forest dam comprises at least one row of prismoid pile groups, and each row of prismoid pile groups comprises a plurality of prismoid pile bodies. By the adoption of the prismoid pile and the prismoid type pile forest dam, the collision impact force, the risk of shearing, the effect of groove bottom erosion, destructiveness of debris flow to structures and possibility of foundation failure are correspondingly reduced.

A cushioning member between plate bodies of a mass body and at end portions, in the circumferential direction, so as not to rotate relative to the plate bodies. The peripheral edges, on both sides in the width direction, of the outer peripheral surfaces of the cushioning member's first and second side portions abutting against a support member, along with swing of the mass body, are chamfered, reducing the possibility that the cushioning member enters in a clearance between the side surfaces of the support member and the plate bodies when the cushioning members' first side portion and the support member abut, or when the cushioning member's second side portion and the support member abut, along with swing of the mass body, suppressing damage to the cushioning member.

The invention discloses a mounting device for an offshore wind generating set based on six-dimensional intelligent mechanical legs. The mounting device comprises a large crane ship, fine positioning buffer system, a fixing mechanism and a tower footing platform, the crane ship floats on the sea, a lifting system of the crane ship is rotatably connected with a translational system of the crane ship, and the crane ship controls the position of a fan through a steel wire rope. The upper end of each six-dimensional intelligent mechanical leg of the fine positioning buffer system is hinged with a flat plate and is fixedly connected with a fixing truss, the lower end of the fixing flat plate is hinged with a cylindrical pin, the cylindrical pin is fixedly connected with a small cylinder, and the small cylinder and a positioning cylinder 1 are concentric. A fan tower is positioned by the aid of the six parallel six-dimensional intelligent mechanical legs, and the position of the fan tower is controlled by the aid of a video sensor, so that the fan tower is rapidly and accurately mounted by the aid of the crane ship, collision is avoided in the mounting process, and time and mounting cost are greatly saved.

The invention discloses an anti-collision protection machine capable of automatically alarming for a ship. The anti-collision protection machine comprises a working box and a fixing plate fixedly connected to the left end face of the working box, bolts capable of fixing the fixing plate to the front side of a ship body are symmetrically arranged on the upper side and the lower side of the fixing plate, a first cavity with a forward opening is fixedly formed in the fixing plate, and a fixing block is fixedly arranged on the front end face of the fixing plate. The ship can be protected when theship collides, a signal device can unfold an anti-collision plate when the collision occurs, the collision contact area is increased to reduce the impact force, a signal can be transmitted to an alarmdevice, a knocking block knocks an alarm bell to give an alarm, a power device can push an air bag out to make contact with the outside, gas in the air bag is rapidly expanded by light, and the air bag is expanded to reduce the collision impact force.

The invention discloses a three-degree-of-freedom wave energy float power generation device and power generation method. According to the three-degree-of-freedom wave energy float power generation device, three power generation units are arranged corresponding to heaving, surging and rolling degrees of freedom, reciprocating wave energy on the degrees of freedom can be captured and is converted into unidirectional output of a generator through the power generation units, parallel connection of the plurality of degrees of freedom and overlay utilization of corresponding energy are achieved, andrelatively high benefits are achieved; and resonance springs are arranged at the two ends of horizontal rods and vertical motion rods, collision impact force can be reduced, return motion of a floatis facilitated, and motion of the float in directions of the degrees of freedom is more continuous due to a simple harmonic motion effect under the action of intermittent waves.

At a front-end side opposite to a head-fixing-member-attachment side, a protection member has an inclined plane sloped up from a head side toward the opposite outer side in a direction in which liquid ejecting heads are arranged in a row. The surface of the front end is located at a position that is not closer to a head-fixing member in comparison with the nozzle surface of each of the liquid ejecting heads attached to the head-fixing member or level therewith. A recess is formed at a part of the inclined plane. In a state in which one of the caps faces the protection member and, in addition, each of the remaining caps is in contact with the nozzle surface of the liquid ejecting head, a part of the cap facing the protection member is in the recess, which ensures that the cap is not in contact with the protection member.

The invention is suitable for the field of dish washing machines and discloses a dish washing machine guide rail retaining block, a dish washing machine guide limiting structure and a dish washing machine. The dish washing machine guide rail retaining block comprises a rigid retaining block body, a first connecting structure and an elastic buffering structure, the first connecting structure is arranged on the rigid retaining block body and used for being in fastened connection with a guide rail, the elastic buffering structure is arranged on the rigid retaining block body and used for being in abutted limitation with a guide limiting wheel, the rigid retaining block body comprises a clamping insertion portion slidably clamped and inserted into a sliding groove of the guide rail, and a clamping portion clamped outside the sliding groove, and the elastic buffering structure is arranged on an end face, away from the clamping portion, of the clamping insertion portion. The elastic buffering structure is arranged on the rigid retaining block body additionally, so that impact force between the dish washing machine guide rail retaining block and the guide limiting wheel is buffered effectively, impact sound generated by collision of the dish washing machine guide rail retaining block and the guide limiting wheel is reduced, comfortability when a user uses the dish washing machine guide rail retaining block is improved, and using safety and reliability and easiness in use of the dish washing machine guide rail retaining block are improved.

The invention provides a vacuum online feeding device of a positive pressure system. The vacuum online feeding device comprises a conical feeding copper, an electrically operated valve, a vacuum generating device and a material buffering device. The vacuum online feeding device is characterized in that the conical feeding copper and the vacuum generating device are connected with the electrically operated valve through flanges; a long pipe of the vacuum generating device is composed of a vertical pipe and an inclined pipe, and the included angle between the vertical pipe and the inclined pipe is 45 degrees; two identical compressed air inlet pipes with small calibers are symmetrically arranged on the two sides of the inclined pipe, and the included angles between the axes of two compressed air inlet pipes and the axis of the inclined pipe are 18 degrees to 20 degrees. The two compressed air inlet pipelines are connected with a main air inlet pipe through a tee joint and are symmetrically distributed on the two sides of the axis of the tee joint, and therefore compressed air entering the two air inlet pipes is equal in flow. The material buffering device is welded to a material outlet of the vacuum generating device, through a rubber plate buffering baffle arranged on the material buffering device, part of energy of materials impacting a buffer cushion can be absorbed, the falling direction of the materials is changed, and the situation that equipment is damaged due to the fact that the materials directly collide with other parts in an equipment body is avoided.

The invention belongs to the technical field of commodities, discloses a simple door stopper, and solves the problems of higher collision impact between a magnetic part and an absorbing part, higher damage to the door stopper and high noise during door closing in a general permanent magnet door stopper. The simpler door stopper comprises a clamping jaw and a clamping ball; the clamping jaw is fixed on a clamping jaw base; the clamping ball is fixed on a clamping ball base; an elastic buffer part is arranged on the clamping jaw base; and absorbing surfaces of the clamping ball and the clampingjaw base are planes. Through arrangement of the elastic buffer part, the collision impact between door stopper parts during contacting can be reduced, the noise is lowered, the door stopper is protected, and the service life of the door stopper is prolonged; the absorbing surfaces are the planes to achieve firmer absorption; and the clamping jaw achieves a reinforcing effect, so that the desorption difficulty of the door stopper is increased.

The invention discloses a passive anti-collision damping multi-rotor drone. Multiple engine arms of same structures are evenly arranged on a baseboard in a concyclic mode, according to the structure of each engine arm, a bearing base is fixed to the baseboard through bolts, a linear bearing is installed in the bearing base, an inner end of a carbon rod penetrates through the linear bearing, the carbon rod is arranged on the linear bearing in a sliding mode, a motor base is fixedly connected with an outer end of the carbon rod, a motor is installed on the motor base, a rotor are installed on amotor shaft, the carbon rod is sleeved with a spring, and the spring abuts between the bearing base and the motor base. The passive anti-collision damping multi-rotor drone has the following characters that the structure is simple, and the whole drone is light in weight; collision can be effectively resisted, and a damping effect is good; after being collided, the passive anti-collision damping multi-rotor drone can fast restore an initial state, so that flying of the drone is safer and more reliable.