32results about How to "Avoid momentary impact" patented technology

The invention belongs to the satellite communication equipment technical field and discloses a truss supported flexible rib parabolic cylindrical unfoldable antenna device. An unfoldable supporting device A supports reflection film surfaces, so that the device can be formed; the unfoldable supporting device A comprises a one-dimensional unfoldable truss, unfolding control cables, rib plates and rib plate adjustment cables; the rib plates are symmetrically hinged to the left side edge and right side edge of the one-dimensional unfoldable truss respectively; the reflection film surfaces are attached onto the upper parabolic edges of the rib plates so as to form a parabolic cylindrical surface; the unfolding control cables are arranged at the upper surface and the lower bottom surface of theone-dimensional unfoldable truss so as to control the unfolding of the one-dimensional unfoldable truss; and the rib plate adjustment cables are arranged at two sides of each rib plate and are used for adjusting the unfolding positions and overall stiffness of the rib plates. According to the truss supported flexible rib parabolic cylindrical unfoldable antenna device of the invention, the one-dimensional truss mechanism is combined with the flexible rib structures, the truss mechanism can be folded and unfolded; the rib plates can be folded through winding, and unfolded flexibly; and after being folded, the device just occupies a small space, and therefore, a storage space for the device is obviously reduced, and the overall weight of the device is significantly reduced.

The invention discloses a balanced valve. Two control oil ducts are arranged between the control oil port of a valve body and a chamber at the end part of a valve core; control oil acts on the valve core through the two control oil dusts to realize the reversing of the valve core; a plugging part is matched with the hole of the first oil dust to close the first oil dust; a throttling groove is arranged on the end part, which is matched with the hole, of the plugging part; and the cross sectional area of the throttling groove gradually reduces along the axial direction, so that the through flow passing through the hole is slowly reduced in the process that the matched surface and the hole become closer gradually and then are plugged, thus larger pressure shock can not be generated at the moment of closing the first oil dust. Preferably, a valve core reverse control loop is provided with a hydraulic half bridge composed of a relief valve and a damp, because the pressure and the flow act in a coupling mode, and a signal output by aiming at the flow grain or the pressure gain can be stably transited to a steady-state value. The invention also provided with a crane using the balanced valve.

The invention discloses a preparation method of meal replacement powder. The preparation method comprises the steps of S1, cereal crushing; S2, cereal sterilization; S3, dry-wet separation; S4, water milling and screening; S5, product collection; S6, quick freezing of the product. The cereals are beaten and crushed, bran remaining on the surfaces of the cereals is removed, and large cereals are rapidly crushed, so that the surfaces of the cereals are clean. Meanwhile, the situation that a discharging port is blocked due to accumulation of large particles is avoided, the bacteria-free condition of subsequent production of the product is guaranteed through continuous sterilization, dry-wet separation is conducted on the sterilized product, a large amount of water is prevented from rapidly entering the grinding position, and therefore the concentration of a powder solution is guaranteed, and the situation that the drying efficiency is affected due to too low concentration is avoided. Dust raising and wet powder accumulation caused by too dry powder are avoided through water milling, normal production of the product is guaranteed, and in addition the production quality of the product is guaranteed.

The invention relates to a segmented type deburring roller. The segmented type deburring roller comprises a roller body, centrifugal swinging blocks and connecting shafts. Flanges are arranged on the roller body. Each centrifugal swinging block is provided with a through hole deviating from the center of the centrifugal swinging block. The connecting shafts penetrate through the through holes in the centrifugal swinging blocks and are fixed to the flanges. The rotation diameter, existing when each centrifugal swinging block is swung, of the centrifugal swinging block is larger than the rotation diameter, existing when each flange rotates, of the flange. The axis of each connecting shaft and the axis of the roller body are parallel to each other. One or more connecting shafts which are adjacent axially are grouped into one section. The connecting shafts of the same section are coaxial. The connecting shafts of every two adjacent sections are not coaxial. The segmented type deburring roller is small in vibration, low in noise, convenient to use, long in service life and capable of effectively eliminating oxidizing slag and burrs, left during flame cutting, of continuous casting sheet billets.

The invention relates to an Internet of Things device data processing method and system and a computer storage medium, the Internet of Things device data processing method is applied to an MQTT server, an Internet of Things device is connected with a cloud platform through the MQTT server, and the method comprises the steps of obtaining an access request sent by the Internet of Things device, the access request comprising authentication information of the Internet of Things device; calling back the authentication information to the user-defined authentication module, and calling an authentication service of the cloud platform through the user-defined authentication module to judge whether the authentication information is legal or not; if yes, accessing the Internet of Things equipment; and obtaining uplink data reported by the Internet of Things equipment to process the uplink data, and sending downlink data to the Internet of Things equipment according to a processing result. Through adoption of the method, instant impact of authentication service and data processing on cloud platform side service caused by frequent online and offline of equipment in a direct connection access scene is effectively avoided, and data acquisition and linkage processing of edge side equipment are not affected.

The invention discloses a multimedia message center and a message issuing method. The multimedia message center comprises a service module, an encoding and decoding module and a buffering processing module, wherein the service module is used for issuing a message to be sent to the buffering processing module; the buffering processing module is used for buffering the message to be sent and issuing the self-buffered message to be sent to the encoding and decoding module according to the speed capable of being processed by an SMSC (Short Message Service Center); and the encoding and decoding module is used for encoding the message to be sent received from the buffering processing module and issuing the encoded message to be sent to the SMSC. The invention not only can reduce the performance requirement on a short message center, but also can improve the service success ratio.

Disclosed is an anti-falling mechanism suitable for a suspension type vertical fin dock. A rack is fixedly arranged on a main body frame of the vertical fin dock, the lower part of the rack is vertically and fixedly provided with an electric push rod, a pull rod vertically penetrates through a wall plate of the top of the rack, the pull rod is coaxial with the electric push rod, the lower end of the pull rod is connected with the electric push rod through a safety rope, the upper end of the pull rod is connected with a retractor through a steel wire rope, and the retractor is arranged on a movable hanging bracket; the pull rod, between a limiting nut and the top wall plate of the rack, is sleeved with a thrust spring; sliding block chucks and guide rail bases both adopt symmetrical mounting structures, each sliding block chuck can linearly move along the corresponding guide rail base, the sliding contact surface of each sliding block chuck and the corresponding guide rail base has an inclination angle relative to a horizontal plane, the two sliding block chucks are symmetrically distributed on the two sides of the movable hanging bracket of a hoisting mechanism of the vertical findock, the clamping surfaces of the two sliding block chucks are parallel, and the clamping surfaces of the sliding block chucks are provided with tooth-shaped grains; and a transmission rod is horizontally and fixedly arranged on the pull rod, a linear sliding groove is horizontally formed in the transmission rod, sliding pins are fixedly arranged on the sliding block chucks, and the sliding pinsare positioned in the linear sliding groove.

The invention discloses an overturning device and method for a marine diesel engine air cylinder cover. The overturning device is cooperated with a single lifting hook to operate; in an air cylinder cover downward-lifting process, the lifting point of the single lifting hook deviates from the center of gravity of the air cylinder cover to form lateral overturning torque; and then, by use of a characteristic that a rotation component can swing on the ground, the air cylinder cover realizes lateral turning and overturning in virtue of the rotation of the rotation component. The overturning device comprises the rotation component and skids, wherein the rotation component is provided with a bottom part of a curved surface shape and comprises three ribbed plates, a bottom plate, two vertical frames, two supporting idler wheels, an installation shaft, a supporting bottom plate and a supporting baffle plate, wherein the bottom outline of each ribbed plate is of a curve shape, and the three ribbed plates are vertical and are laterally arranged in parallel; the shape of the bottom plate and the bottom outline of each ribbed plate are the same, and the bottom plate and the ribbed plates arewelded and fixed; the two vertical frames are independently laminated to the outer sides of the ribbed plates on two sides, and the lower parts of the two vertical frames are fixed with the ribbed plates; the supporting idler wheels are erected on the upper parts of the two vertical frames through the installation shaft and can rotate; and the rotation component is placed and can swing between left and right on the ground. The overturning device is easy in operation and is high in working efficiency, operation safety is greatly improved, and accident risks are avoided.

The invention discloses a hydraulic buffer device, and belongs to the technical field of hydraulic transmission. The hydraulic buffer device comprises a main block body and a buffer assembly, a hydraulic channel and a control channel are formed in the main block body, the two ends of the hydraulic channel penetrate through the main block body, and the control channel communicates with the hydraulic channel. The buffer assembly comprises a connecting block, a piston, a piston rod and an elastic piece, the connecting block is located on the main block body, a buffer cavity is formed in one sideof the connecting block and communicates with the control channel, the piston coaxially sleeves the first end of the piston rod, and the hydraulic channel communicates with a hydraulic cavity througha first flow channel. The outer circumferential wall of the second end of the piston rod is in sliding fit with the inner circumferential wall of the control channel to control the opening degree of the hydraulic channel, and the elastic piece is located in an elastic cavity. The hydraulic buffer device can prevent hydraulic pressure from generating instantaneous impact on execution elements, so that the service life of the execution elements is prolonged.

The invention relates to a falling prevention mobile phone shell. The falling prevention mobile phone shell comprises a hard hollow backboard and a soft elastic hollow frame, wherein hollow areas of the backboard and the frame are communicated and form a sealed space. The falling prevention mobile phone shell is characterized in that the sealed space is filled with a liquid; the hollow area of the backboard is further provided with a hermetically sealed elastic air bag which can move freely; the external part of the elastic air bag is wrapped with a hermetically sealed flow-limiting shell made of a transparent material, and the flow-limiting shell is provided with flow limiting holes which are arranged at equal intervals in the circumferential direction; and the outer wall of the flow-limiting shell is further provided with memory metal pieces with a two-way memory effect which are installed at equal intervals in the circumferential direction, and each memory metal piece is vertical with the outer wall of the flow-limiting shell. The mobile phone shell provided by the invention is light in texture, can effectively weaken an impact force when a mobile phone falls, and protects the safety of a screen. The falling prevention mobile phone shell has good heat conduction and heat dissipation effects, has a movable logo at the same time, and is more exquisite in appearance.

The invention provides a Bluetooth earphone capable of adjusting ear pressures. The earphone comprises an earphone body, earplugs and earphone wires; the earplugs are connected with the earphone bodythrough the earphone wires; each earplug comprises an earplug part used for plugging an external ear and an adjusting part connected with the earplug part; a transition cavity which communicates withan external auditory canal is formed in each earplug part; a movable ring part connected with each earphone wire is arranged in each transition cavity; a balance cavity is formed in each adjusting part; one end of each balance cavity communicates with each transition cavity, and the other end of each balance cavity is connected with external atmosphere; and a gas flow limiting structure used for reducing air flow speed is arranged in each balance cavity. The Bluetooth earphone capable of adjusting the ear pressure is high in practicability; and the Bluetooth earphone can adjust the air flow speed of each external ear to balance an air pressure between each external ear and each middle ear, so that the discomfort of each ear due to the fact that an external pressure is changed is reduced.

The invention relates to a scarifying machine with profiling, limiting and adjustable spear-shaped shovels. The scarifying machine mainly comprises frames, oil cylinders, a front suspension rack, a rear traction rack, support wheels, the spear-shaped shovels and the like and is characterized in that the left and right frames and the left and right oil cylinders are mounted on the left side and theright side of the frame, the front suspension rack and the rear traction rack are mounted on the upper portion of the middle frame, and the support wheels and the spear-shaped shovels are mounted onthe lower portion of the frames. The scarifying machine has the advantages that the scarifying machine is simple in structure and easy to implement, the front suspension rack and the rear traction rack are hinged through suspension connecting rods, instant impact force, caused during machine lifting, to the whole machine can be avoided effectively, and effective machine protection can be achieved;by hinge connection formed by arranging shovel connecting rods on the spear-shaped shovels and spring acting force of return pressure springs on the spear-shaped shovels, the spear-shaped shovels canhave profiling ability to the ground surface and soil layer, a limiting effect on the spear-shaped shovels can be achieved, the spear-shaped shovels can avoid hard substances in the soil layer, the scarifying depth consistency of the spear-shaped shovels can be guaranteed, and the spear-shaped shovels can be protected; the height of support rods and the support wheels can be adjusted, so that thescarifying depth can easily satisfy agriculture requirements.

The invention discloses a lifting mechanism of a laser navigation forklift and an accurate control system. The lifting mechanism of the laser navigation forklift comprises a hydraulic lifting column installed on the surface of the bottom of a forklift body of a right-angled-U-shaped structure, a lifting frame connected with the forklift body is installed at the end, away from the forklift body, of the hydraulic lifting column, and a pallet fork is installed on the lifting frame. Through a pressing column strip and an oil liquid speed limiting block, the descending speed and shaking amplitude of the lifting frame are reduced, during implementation, the lifting frame can be pulled to be lowered by lowering the height of the hydraulic lifting column, and then a hydraulic push column is filled with liquid through a movable liquid filling device, so that the pressing column strip is pushed to press the lifting frame to lower the descending speed and the shaking amplitude of the lifting frame. Meanwhile, when liquid in the hydraulic lifting column starts to be discharged, the oil liquid speed limiting block can be driven to be inserted into a liquid filling channel so as to limit the suction speed of the liquid in the hydraulic lifting column, the reduction speed of the hydraulic lifting column is stable, and therefore the situation that a lifting mechanism is damaged and leaks oil due to the fact that the lifting mechanism is subjected to large instantaneous impact force can be avoided.

The invention discloses battery formation equipment and a restraining tray thereof, and the restraining tray comprises a main body frame which is fixedly provided with a substrate; a restraining assembly which comprises at least one clamping plate, wherein the clamping plates and the substrate are arranged in parallel and in a straight line to form at least one clamping station; a power assembly which comprises a driving mechanism; and an elastic reset assembly which is connected between the power assembly and the restraining assembly, wherein the driving mechanism is connected with the elastic reset assembly and can drive the clamping plate to move towards the substrate through the elastic reset assembly, and the elastic reset assembly is connected with the clamping plate and can push theclamping plate to move in the direction opposite to the substrate. The elastic reset assembly is adopted to provide elastic force, when the driving mechanism pushes the clamping plates to clamp a battery cell, the elastic reset assembly provides buffer force to gradually clamp the battery cell, the situation that the battery cell is seriously deformed and unqualified products are generated due tothe fact that instantaneous impact force is generated is avoided, and the production qualification rate is greatly increased.

The invention discloses a storage and transportation hopper for preventing fruit and vegetable garbage bridging. The storage and transportation hopper is a bin 1, the upper part of the bin 1 is of a cuboid shape and the lower part of the bin 1 is of a four-sided cone shape, a cavity is arranged in the bin 1, a shunt baffle 2 is arranged at the middle upper part of the bin 1, the shunt baffle 2 penetrates through the bin 1 in the long side direction of the bin 1, and the two ends of the shunt baffle 2 are fixed to the bin wall of the short side of the bin 1; the appearance of the shunt baffle 2is of a transverse long blade shape, the sharp end of the blade is upward, a cavity is arranged in the bottom side of the back end of the blade, and the cavity is provided with a hydraulic piston rod4 and a movable knife 3; one end of the hydraulic piston rod 4 is fixed to the bin wall of the bin 1 while the other end of the hydraulic piston rod 4 is connected to the movable knife 3; the bottomend of the four-sided cone at the lower part of the bin 1 is connected to a screw conveyor 6; and the hydraulic piston rod 4 is connected to a hydraulic control device 5, and the hydraulic control device 5 is arranged on the ground. According to the storage and transportation hopper, manual inspection and manual arch breaking are replaced with self-control mechanical operation, the manual workingenvironment is improved, and automatic and efficient breaking of a bridge frame and continuous material receiving and transportation on the assembly line are realized.

The invention discloses a position adjusting device of a horizontal heating furnace tube. The device comprises: a fixing plate fixedly connected with a rack; an up-down adjusting plate comprising a horizontal plate and a vertical plate, wherein the vertical plate is in sliding fit with the side face of the fixing plate through a vertical guide structure in the vertical direction; an up-down adjusting guide plate and a vertical adjusting assembly, wherein the up-down adjusting guide plate is in sliding fit with the side face of the fixing plate, the up-down adjusting guide plate is located below the up-down adjusting plate, and the vertical adjusting assembly is used for adjusting the position of the up-down adjusting guide plate in the vertical direction so as to drive a furnace tube to move in the vertical direction; and a left-right adjusting plate and a horizontal adjusting assembly, wherein the left-right adjusting plate is arranged on the horizontal plate in a sliding mode through a horizontal guide structure, and the horizontal adjusting assembly is used for adjusting the position of the left-right adjusting plate in the horizontal direction.

The invention discloses a turntable assembly for a stereo garage, and relates to the field of stereo garages. The turntable assembly comprises a rotary disc device, a lift car frame and a centering device used for vehicle centering correction, the lift car frame is installed in the middle of the rotary disc device and driven by the rotary disc device to horizontally rotate, the centering device isinstalled on the lift car frame, the centering device comprises two front wheel pressing wheel assemblies, two rear wheel pressing wheel assemblies and two driving mechanisms, the two front wheel pressing wheel assemblies are symmetrically arranged on front wheel supports on the two sides, the two rear wheel pressing wheel assemblies are symmetrically arranged on rear wheel supports on the two sides, one driving mechanism is connected between the two front wheel pressing wheel assemblies so as to drive the front wheel pressing wheel assemblies on the two sides, and the other driving mechanismis connected between the two rear wheel pressing wheel assemblies so as to drive the rear wheel pressing wheel assemblies on the two sides. The turntable assembly can be used for turning the direction of a vehicle entering the garage, the centering device can be used for oppositely extruding front and rear wheels of the vehicle entering the garage from the two sides of the vehicle entering the garage, and centering correction of the vehicle is achieved.