32results about How to "Mitigate external shocks" patented technology

The invention provides a robot flexible joint with continuously adjustable stiffness and relates to the field of robots. The robot flexible joint with continuously adjustable stiffness comprises a driving end, a buffering mechanism and an output flange as well as a stiffness adjusting mechanism, wherein the driving end is used for providing main power for a joint, the buffering mechanism is connected between the driving end and the output flange, used for transmitting the main power of the driving end to the output flange and comprises an elastic element; and the stiffness adjusting mechanism moves and is connected with the buffering mechanism and changes pre-compression amount of the elastic element by moving toward the buffering mechanism, and stiffness adjustment on the joint is realized. The robot joint provided by the invention has the advantages that the stiffness is continuous and adjustable, the flexible joint can effectively reduce an external impact force, and the security of the robot and environmental friendliness are improved.

The invention discloses a mechanical arm control system based on a variable-stiffness elastic driver. The mechanical arm control system comprises a real-time computer control system, a data acquisition system, a driving end, a stiffness adjusting mechanism and an output flange. The invention further discloses a mechanical arm control method based on the variable-stiffness elastic driver. According to the mechanical arm control system disclosed by the invention, the structure is compact, the universality is high, the stiffness is continuous and adjustable, and the external impact fore can be effectively reduced; by utilization of the own smooth feature of the mechanical arm control system, a joint connection rod is protected, and then all parts of a whole robot are well protected; in a control process, the nonlinear problem caused by an elastic element in the elastic driver, namely the influence, caused by the variable stiffness, on the performance, as well as the robot dynamics and the driver dynamics are considered; through the construction of a novel high-dimensional integral Lyapunov-Krasovskii functional on a closed-loop system, the controller design procedure is simplified, and the overall stability of the closed-loop system is guaranteed; and the mechanical arm control system has the characteristics of being high in stability and strong in interference-resistant capability.

The invention provides a leaf-spring-based robot flexile joint with continuously-adjustable rigidity. The leaf-spring-based robot flexile joint comprises a drive end, a rigidity adjustment mechanism and an output flange. The drive end is used for providing joint driving force. The rigidity adjustment mechanism is connected to the drive end and used for transmitting the driving force of the drive end to the output flange. By means of the rigidity adjustment mechanism, rigidity adjustment of the joint is achieved by changing the valid working strength of a leaf spring. The leaf-spring-based robot flexile joint is compact in structure and good in universality, has the continuously-adjustable rigidity and can effectively reduce the external compact force; the precision and the height can both meet the requirements for the low vibration noise and the low manufacture and installation requirements while the safety and environment friendliness of a robot are improved; and cost is low, the application range is wide, and wide market application prospects are achieved.

The invention belongs to the technical field of wireless energy transmission, and particularly relates to a magnetic coupling mechanism of a sliding ring. The magnetic coupling mechanism comprises anelectromagnetic coupling mechanism, wherein the electromagnetic coupling mechanism comprise an external cylinder coil, an external cylinder magnetic core, an internal cylinder coil and an internal cylinder magnetic core, and wireless energy transmission can be achieved. By coaxially sleeving an energy emission mechanism and an energy receiving mechanism, the wireless energy transmission of the energy emission mechanism and the energy receiving mechanism can be achieved in a relatively rotation system the groups of magnetic strips are controlled by losing a part of magnetic shielding performance and controlling maximum magnetic induction intensity of the magnetic cores under the condition that the magnetic cores cannot reach magnetic saturation, and the mass of the coupling mechanism is reduced to the greatest extent.

The invention provides a rear sub-frame of an automobile applied to the technical field of auto parts. A front cross beam (1) is connected with one end of a left longitudinal beam (3) and one end of a right longitudinal beam (4) respectively, a rear cross beam (2) is connected with the other end of the left longitudinal beam (3) and the other end of the right longitudinal beam (4), after the front cross beam (1), the rear cross beam (2), the left longitudinal beam (3) and the right longitudinal beam (4) are connected, a mouth-shaped structure is formed, the front cross beam (1), the rear cross beam (2), the left longitudinal beam (3) and the right longitudinal beam (4) are structures made of aluminum alloy materials, and the rear sub-frame of the automobile is designed into a structure prepared through the integrated molding process. The rear sub-frame of the automobile is simple in structure and low in cost and has the advantages of being ligh, integrally formed, short in molding time, consistent in performance, free or connection defects, high in accuracy and the like. When collision occurs, the rear sub-frame of the automobile can effectively absorb external impact, and the safety of passengers is ensured when the whole automobile is in use.

The invention discloses a high-performance underwater welding cable, comprising a cable core, wherein the cable core is twisted by two pairs of air pipes and a plurality of Kevlar filling ropes with different sizes; A waterproof inner protective layer is wrapped around the cable core, An inn conductor layer is arranged outside the waterproof inner protective layer, the inner conductor layer is first wrapped around the buffer type semiconducting resistance hose and then wrapped around the waterproof inner protective layer, the outer conductor layer is arranged outside the waterproof inner protective layer, the outer conductor layer is wrapped around the buffer type semiconducting resistance hose again, and the waterproof outer protective layer is squeezed outside the buffer type semiconducting resistance hose. The cable has high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, weather resistance, high performance, but also has high water permeability, moisture permeability, wind resistance, antibacterial, mould resistance, anti-ultraviolet and energy release and many other excellent functions.

The invention provides an anti-falling self-protection structure of a plasma display screen, which comprises a support frame and a plasma display screen arranged in the support frame, wherein four corners of the support frame are provided with rubber protection sleeves, a screen protection device is arranged on an edge frame at the upper side of the support frame, the screen protection device comprises a first rotating shaft, wherein the surface of the first rotating shaft is rotatably connected with a containing box, the containing box is rotatably connected with a protective film, a rope isarranged on the right side of the first rotating shaft, a buffering device is arranged on an edge frame at the lower side of the support frame and comprises a bottom plate and a top plate, a first supporting rod and a second supporting rod are arranged between the top plate and the bottom plate, the first supporting rod is crosswise connected with the second supporting rod through a second rotating shaft, a chute is arranged in the bottom plate, the first supporting rod and the second supporting rod can slide in the chute. The plasma display screen designed by the invention comprises a multi-layer protection structure, so that the plasma display screen can not be dropped to be broken in the using process.

The invention discloses a grape freshness keeping package. The grape freshness keeping package comprises a corrugated carton and freshness keeping bags. At least one partition plate is arranged in the corrugated carton and divides the corrugated carton into triangular packaging units, the unique freshness keeping bags are used by the packaging units, and each freshness keeping bag is made of an accumulation layer composite film and comprises a freshness keeping agent layer and polyethylene from inside to outside. According to the grape freshness keeping package, the freshness keeping period of grapes is prolonged in the two aspects of the structure and freshness keeping agents, the structure is reasonable, and the freshness keeping effect is good.

The invention discloses a stable pipeline support. The stable pipeline support comprises a support body, supporting feet and a containing groove. An air bag is mounted at the bottom of the support body, the three sets of supporting feet are mounted on the outer side wall of the support body, sleeves are arranged below the supporting feet, the containing groove is formed in the top of the support body, an upper pressing plate is arranged above the support body, upper mounting parts are mounted on the left side wall and the right side wall of the upper pressing plate, fixing rods are mounted onthe tops of the upper mounting parts, lower mounting parts are mounted on the left side wall and the right side wall of the support body, and through holes are formed in the tops of the lower mountingparts. Through the air bag mounted at the bottom of the support body, external impact borne by the pipeline support can be relieved, the pipeline support is prevented from being overturned, meanwhile, the three sets of supporting feet are mounted on the outer side wall of the support body, triangle supporting is stable, thus, the stability of the pipeline support is improved, influences caused during pipeline machining are avoided, the pipeline machining effect is guaranteed, and the stable pipeline support is suitable for being widely used and popularized.

The invention discloses a building seismic isolation structure. The building seismic isolation structure comprises a fourth fixing plate; a second sliding block is welded to the central axis of the top of the fourth fixing plate; a stopping block is arranged on the external side of the second sliding block; third springs are welded to the top of the fourth fixing plate; the number of the third springs is four; a third fixing plate is welded to the other ends of the third springs; a through hole is formed in the central axis of the top of the third fixing plate; a slide groove is formed in theinternal wall of the through hole; one end of the second sliding block penetrates through the through hole in one side of the third fixing plate; and the second sliding block is slidingly connected tothe slide groove in the internal wall of the through hole in one side of the third fixing plate. In general, the building seismic isolation structure buffers an outside impact force by using multiplebuffering structures so that the seismic isolation effect is improved; and therefore, a superstructure cannot be damaged due to the impact of the outside force so that the earthquake prevention capacity of a building is improved.

A frame of bicycle with full-pivoted variable structure is disclosed. The upper end of its front vertical tube is pivoted to one ends of the 1st and 8th rods. Another end of the 1st rod is pivoted to one ends of the 2nd and 3rd rod, whose another ends are respectively pivoted to one ends of the 4th and 5th rods. Another ends of the 4th and 5th rods are respectively pivoted to both ends of the 4th pivot part. Another end of the 8th rod is pivoted to the 4th pivot part. The both ends of the 6th rod are respectively pivoted to the 4th and 1st pivot parts. The 7th rod is pivoted between the lower end of front vertical tube and the middle of the 4th pivot part.

The invention discloses a high stability type paper tuber adhesive and belongs to the technical field of adhesives. Polyvinyl alcohol molecule is used as a main chain, is combined with subsequent prepared composite reinforcement three-dimensional crosslinked network, and provides better pressure resistance. An esterification acylation product is prepared and combined with an organic polymer, and the esterification acylation product can well relieve external shocks and guarantee creep resistance of the pressure resistant composite material. A hyperbranched polymer is formed by carboxyl termination, so that a large number of branched structures are contained in a molecular structure, and high fluidity and better solubility are provided. By use of branched molecular chains, entanglement is performed on components so as to improve compactness of the paper tuber adhesive, and viscoelasticity can be well kept when the paper tuber adhesive is under external shocks. The prepared hyperbranchedcomponents are further combined to perform filling and dispersing on the inner part, so that an anti-impact property is improved, and pressure and creep resistance is guaranteed. The adhesive solves the problem that the current common paper tuber adhesives have poor compression strength and creep resistance after use.

The invention provides a vibration isolation structure. The vibration isolation structure comprises a fourth fixing plate; a second sliding block is welded to a central shaft of the top of the fourthfixing plate; a blocking block is arranged on the outer side of the second sliding block; four third springs are welded to the top of the fourth fixing plate; a third fixing plate is welded to the other ends of the third springs; a through hole is formed in a central shaft of the top of the third fixing plate; the inner wall of the through hole is provided with a sliding groove; one end of the second sliding block penetrates through the through hole in one side of the third fixing plate; and the sliding groove of the inner wall of the through hole of one side of the third fixing plate is slidably connected with the second sliding block. Generally, a plurality of buffer structures are adopted by the vibration isolation structure for alleviating external impact force, the vibration isolationeffect is improved, thus, an upper layer building of the device is not damaged by external impact, and the vibration isolation capacity of buildings is improved.

The invention discloses a hydrological monitoring buoy protection device. The device comprises a first protection frame, a second protection frame and an arc-shaped support, and the arc-shaped support is movably connected with the lower portion of the first protection frame and fixedly connected with the upper portion of the second protection frame; transverse supports are evenly distributed on the outer wall of the first protection frame and sleeved with first rollers, vertical supports are evenly distributed on the outer wall of the second protection frame and sleeved with second rollers, and mounting holes are formed in the inner wall of the first protection frame and the inner wall of the second protection frame. A buffer layer is arranged in the second protection frame. The structure and materials of the protection device are improved, and the anti-impact protection effect is excellent.

The invention discloses an anti-impact and corrosion-resistant PE solid-wall pipe which comprises a pipe body and an upper abutting plate. An installing head fixing plate is arranged at the right endof the pipe body, an installing head is arranged on the right side of the installing head fixing plate, a connected head fixing plate is arranged at the left end of the pipe body, a secondary connecting plate is arranged on the left side of the connected head fixing plate, a connected head is arranged on the right side of the secondary connecting plate, convex frictional points are arranged on theouter surface of the pipe body, and a water outlet is formed in the middle position of the inner surface of the pipe body. A corrosion-resistant layer is arranged in the pipe body, corrosion in the pipe body is retarded through the corrosion-resistant layer, the installing head and the connected head are arranged on two sides of the pipe body, two secondary connecting plates are arranged at the connecting positions of the pipe body and the installing head and the connected head, the pipe is further fixed through the secondary connecting plates when a worker installs the pipe, the breakage problem is avoided during pipe installation, and convenience is brought to a user.

The invention relates to a carrier for transferring ceramic plates. The carrier for transferring the ceramic plates comprises an A-shaped structure and a chassis structure; the A-shaped structure is detachably mounted on the chassis structure through a fixing part; a large ceramic plate is obliquely placed on a carrying component of the chassis structure and is supported at the bottom through a long side; the plate surface leans against a plurality of leaning beams of the A-shaped structure; the large ceramic plate is integrally and vertically placed on the carrier; and the plate surface has an included angle with the vertical surface. According to the carrier for transferring the ceramic plates, the ceramic large plates are packaged, so that the occupied area of the ceramic large plates in the transferring process can be reduced, the convenience of freight and cargo carrying can be improved, the cargo carrying space is more effectively utilized, and meanwhile, the inclined placing method is matched with the leaning beams and the anti-skid cloth arranged on the carrying component, so that the ceramic large plate is more stable in the transferring process, and the protection on the ceramic large plate is enhanced.

The invention relates to a functional garment with bearing belts. The functional garment with the bearing belts disclosed by the invention comprises a garment and the bearing belts, wherein the garment is formed correspondingly according to body dimensions of a wearer, and the garment is clung to a user's skin when the garment is worn by the user; and the bearing belts are formed on the garment by a spiral structure and can compress muscles of the wearer. The functional garment with the bearing belts disclosed by the invention is characterized in that effects such as muscle tensity adjustment and body balance maintenance can be achieved through singular wearing of the functional garment disclosed by the invention; external impact can be relieved and muscle pains can be relieved; and second-time damage of the muscles can be prevented. In addition, by adhered belt structures formed at positions corresponding to specific parts of the muscles, the muscles can be protected; and exercise efficiency can be increased.

The invention discloses a fermentation tank for liquor brewing. The fermentation tank comprises a fermentation tank body; the lower surface of the fermentation tank body is fixedly connected with a rubber pad; rubber pad fixing plates are fixedly arranged on the two sides of the lower portion of the outer side surface of the fermentation tank body; the sides, far away from the fermentation tank body, of the rubber pad fixing plates penetrate through the inner wall of the side surface of the rubber pad; limiting plates are fixedly arranged on the upper portions of the inner walls of the left side and the right side of the fermentation tank body; the upper surfaces of the limiting plates are connected with an auxiliary cover plate in a sliding mode; the side surface of the auxiliary cover plate is connected to the inner wall of the fermentation tank body in a sliding mode; the center of the upper surface of the auxiliary cover plate is provided with an avoidance port; sliding rails are fixedly arranged at the positions, located on the two sides of the avoidance port, of the upper surface of the auxiliary cover plate; a light wood cover plate is fixedly arranged above the avoidance port; and the upper surface of the light wood cover plate is fixedly connected with a positioning sliding plate. The fermentation tank relates to the technical field of liquor brewing and fermentation.The fermentation tank for liquor brewing has the advantages of being good in sealing performance, high in stability, capable of effectively absorbing redundant carbon dioxide in the tank body and capable of improving the liquor fermentation quality.

The invention provides a robot flexible joint with continuously adjustable stiffness and relates to the field of robots. The robot flexible joint with continuously adjustable stiffness comprises a driving end, a buffering mechanism and an output flange as well as a stiffness adjusting mechanism, wherein the driving end is used for providing main power for a joint, the buffering mechanism is connected between the driving end and the output flange, used for transmitting the main power of the driving end to the output flange and comprises an elastic element; and the stiffness adjusting mechanism moves and is connected with the buffering mechanism and changes pre-compression amount of the elastic element by moving toward the buffering mechanism, and stiffness adjustment on the joint is realized. The robot joint provided by the invention has the advantages that the stiffness is continuous and adjustable, the flexible joint can effectively reduce an external impact force, and the security of the robot and environmental friendliness are improved.

The invention relates to an elastically-driven power type bionic knee joint. The elastically-driven power type bionic knee joint includes a main power drive end, a buffer mechanism, a stiffness adjustment mechanism, a knee joint power output end, and a calf connection end. The main power drive end is used for providing main power for a joint. The buffer mechanism is connected between the main power drive end and the knee joint power output end and is used for transmitting the main power of the drive end to the knee joint power output end. The buffer mechanism includes an elastic element. The stiffness adjustment mechanism is movably connected to the buffer mechanism. The stiffness adjustment mechanism changes the pre-compression amount of the elastic element by moving towards the buffer mechanism to achieve the stiffness adjustment of the joint. The calf connection end is connected to the knee joint power output end. The elastically-driven knee joint can effectively reduce the externalimpact, the joint stiffness is continuously adjustable to adapt to different sports demands, and the elastically-driven knee joint can provide the main power for a prosthesis wearer to reduce the muscle energy consumption of a patient wearing the prosthesis and to improve the wearing comfortableness.

The present invention discloses a liquefied natural gas transfer pipe for supplying fuel of a ship engine. The transfer pipe comprises: an inner pipe for forming a flow path in which liquefied natural gas moves; a heat-insulating part for encompassing the outer peripheral surface of the inner pipe; an outer pipe for encompassing the heat-insulating part so that the inner peripheral surface thereof is spaced a predetermined interval from the outer peripheral surface of the heat-insulating part, thereby enabling an air gap to be formed; and an interval-maintaining means provided on the heat-insulating part and the outer pipe so as to separate the outer peripheral surface of the heat-insulating part and the inner peripheral surface of the outer pipe and maintain an interval therebetween, wherein the heat-insulating part has independent unit heat-insulating members, which have hollow portions and are stacked in a radial direction around the outer peripheral surface of the inner pipe, and the unit heat-insulating members, having the same diameter and being stacked in the longitudinal direction of the inner pipe, are continuously joined so that independent contact air gaps are formed between the stacked unit heat-insulating members.

The invention discloses an anti-toppling wine making vessel. The anti-toppling wine making vessel comprises a jar body, a suction seat is fixed to the side wall of the lower part of the jar body, a stress seat is fixed to the inner bottom of the jar body, an upper opening of the jar body abuts against plug rubber, a bearing spring is fixed to the inner bottom of the stress seat, a sealing plate which is slidably connected with the inner wall of the stress seat in a sealed mode is fixed to the upper end of the bearing spring, an air suction pipe communicating with the interior of the stress seat is inserted into the upper end of the stress seat, an air guide groove enabling the interior and the exterior of the jar body to communicate is formed in the bottom of the plug rubber, and the air suction pipe communicates with the interior of the air guide groove. The anti-toppling wine making vessel has the advantages that the suction seat is installed at the bottom of the jar body, and when wine liquid is added into the jar body, the suction seat is continuously extruded by utilizing continuous increase of the weight of the jar body, so that the suction seat is in tight fit with the ground by discharging the internal redundant air, the stability of the whole jar body is improved, and the toppling risk of the jar body is effectively reduced.

The invention discloses an antivibration hard disk box. A hard disk main body is supported inside a housing through a buffer part. The buffer part is disposed outside a support in a way that the top end and the bottom end of the buffer part are exposed from the top surface and the bottom surface of the hard disk main body respectively. The buffer part is set to be a hollow rubber plate. Guide plates are vertically connected to two sidewalls at the two sides of a top wall and a bottom wall and are vertically connected to an end wall at the rear end of the top wall and the bottom wall. Reinforcing plates are symmetrically installed on the sidewall of the housing. Two elastic cylinders correspond to each other and are installed in an installation space formed by the reinforcing plates. The installation process of the box becomes quite conveniently. The housing is buffered by springs, the vibration reduction performance is improved, the overall size of the box is reduced, and the hard disk main body can be truly prevented from being impacted up and down due to the rebound force of the buffer part. The guide plates and the reinforcing plates fully utilize the space of the box, the manufacturing cost is inhibited, external impact force can be prevented, and electromagnetic radiation can be minimized.

The invention relates to the technical field of packaging structures, in particular to a packaging structure of electrical equipment. The electrical equipment comprises a machine head, a machine tail and a connecting rod connecting the machine head and the machine tail, the packaging structure of the electrical equipment comprises a first packaging assembly, a second packaging assembly and a supporting assembly, and the first packaging assembly is suitable for packaging the machine head; and the second packaging assembly is suitable for packaging the machine tail. The supporting assembly comprises at least two supporting plates which are oppositely arranged and located at the two sides of the connecting rod, and the two ends of the supporting plates abut against the first packaging assembly and the second packaging assembly correspondingly. According to the packaging structure of the electrical equipment, the supporting plates slow down the opposite displacement trend of the connecting rod and the machine tail, and the stress of the connecting rod, the stress of the machine head and the stress of the machine tail are balanced.

The invention discloses an elastic-drive dynamic bionic knee joint. The elastic-drive dynamic bionic knee joint comprises an active force driving end, a buffering mechanism, a stiffness adjusting mechanism, a knee joint force output end and a shank connecting end. The active power driving end is used for providing the knee joint active force, the buffering mechanism is connected between the active force driving end and the knee joint force output end and used for conveying the active force of the driving end to the knee joint force output end and comprises an elastic component, and the stiffness adjusting mechanism is connected to the buffering mechanism in a motion mode and changes the precompression amount of the elastic component through facing the buffering mechanism, so that stiffness adjustment of the knee joint is achieved, and the shank connecting end is connected with the knee joint force output end. According to the elastic-drive dynamic bionic knee joint, outer impacts can be effectively slowed down, and the knee joint stiffness is continuously adjustable, so that different motion requirements are met; the active force can be provided for an artificial limb wearer, so that energy consumption of muscles of the patient with an artificial limb is reduced, and the comfort of wearing is improved.