40results about How to "Improve load bearing capacity" patented technology

The invention relates to ship cylinder oil which meets the requirements of lubrication between piston and cylinder wall when offshore and ocean low-speed crosshead two-stroke engines adopt fuel oil with sulphur content more than 3 percent. Therefore, the invention also provides the processing method of ship cylinder oil. The invention is characterized in that the ship cylinder oil is mixed by base oil, sulfurized calcium alkyl phenate, calcium naphthenate, high base number calcium sulfonate, ashless dispersant and antioxidant; moreover, the invention adopts the following performance parameters: kinematic viscosity is greater than 16.3 mm<2>/s and smaller than 21.9 mm<2>/s (100 DEG C); pour point is less than or equal to 5 DEG C below zero; flash point is more than or equal to 210 DEG C; total base number is more than or equalto 98mgKOH/g; viscosity index is more than or equal to 70; water content is less than or equal to 0.06 percent and sheet copper corrosion (100 DEG C, 3h) is less than or equal to 1 grade. The processing method of ship cylinder oil is characterized in that base oil is fed into a mixing kettle to be heated till the temperature reaches to 70+5 DEG C while stirring and circulating; sulfurized calcium alkyl phenate, calcium naphthenate, high base number calcium sulfonate, ashless dispersant and antioxidant are pumped into a geosyncline to be mixed with part preheated base oil which is also fed into the geosyncline; the mixed material inside the geosyncline is pumped into the mixing kettle by a gear pump to be stirred for dissolution; moreover, the mixed material is under circulation by a static mixer for no less than 2.5 hours when stirred.

The invention discloses an integrated dual seven-freedom-degree mechanical arm omnidirectional mobile robot system and a control method. The system comprises an omnidirectional mobile motion chassis,a lifting column, a dual seven-freedom-degree mechanical arm, a control module, and a power module; the integrated dual seven-freedom-degree mechanical arm omnidirectional mobile robot control methodadopts a layered structure, the control module comprises a second control unit and a first control unit, the second control unit carries out real-time control over the omnidirectional mobile motion chassis, the lifting column and the dual seven-freedom-degree mechanical arm, the first control unit carries out omnidirectional mobile motion chassis path planning and dual seven-freedom-degree mechanical arm path planning real-time calculation. The integrated dual seven-freedom-degree mechanical arm omnidirectional mobile robot system and the control method have more redundant degree of freedom, motion flexibility is good, meanwhile, in combination with the omnidirectional mobile motion chassis, moving in any direction can be carried out, robot autonomous operation flexibility is ensured, andman-machine collaborative operation adaptation is ensured.

The invention discloses a piston type oscillating cylinder which comprises a cylinder body, rack-shaped piston rods, adjusting screw rods and an output shaft. The cylinder body is provided with two cylinder chambers and two end covers. The two rack-shaped piston rods are arranged in the two cylinder chambers respectively. The two adjusting screw rods are arranged on one end cover. The output shaft is fixedly provided with a gear which is in meshed connection with the two rack-shaped piston rods. The output shaft is connected with a rotary disk. The end cover where the adjusting screw rods are placed is a gas inlet end cover, and the other end cover is a gas outlet end cover. Each adjusting screw rod is provided with a gas inlet hole and a gas inlet adjusting mechanism. Each rack-shaped piston rod is provided with a vent hole. The gas outlet end cover is provided with two exhaust holes and two exhaust adjusting mechanisms which correspond to the two cylinder chambers respectively. According to the piston type oscillating cylinder, the rack-shaped piston rods are provided with the vent holes so that gas can flow to the other end from one end of each cylinder chamber, a buffer effect is achieved on the movement of the rack-shaped piston rods, the movement of the rack-shaped piston rods is stable and collision force is reduced.

The invention relates to the field of exercise equipment, in particular to a lifting mechanism of a running device, comprising a running platform lifting base, a stepping motor, a worm gear, synchronous belts, linear guide rails, a running platform fixing plate, a lifting sliding plate, a trapezoid lead screw, a trapezoid nut, lifting rods, a connection valve and a fixing rod. In the lifting mechanism, the lifting sliding plate moves along the linear guide rails, the accuracy is high and the operation is stable. Simultaneously, the lifting mechanism is provided with two lifting rods, the loadability is strong, the application group is wide, and the use is convenient.

A wooden member joint structure having high strength against load repeatedly applied in opposite directions, with improved work efficiency in joining the wooden member to a mating member. A screw member having spiral protrusion on its outer peripheral surface and an axial hollow hole is threaded axially into a wooden column. A distal end of joint bolt is threadedly engaged with bottom of the hollow hole. The joint bolt has an integrally formed flange, and the flange is threaded into the column together with the screw member with its contact surface firmly pressed against end face of the screw member. A joint device is clamped between a fastening nut threadably mounted on a proximal end of the joint bolt and the flange and coupled to the screw member via the joint bolt. The joint device is secured to a foundation by an anchor bolt protruding therefrom and a fastening nut.

Implant for transfemoral or transtibial amputation comprising a stem (3) and a base (2), the base (2) comprising a bone support surface (4) on one side and on an opposite side a soft tissue load bearing surface (5). The stem extends from the base perpendicular to the bone support surface and is configured for insertion in a medullary canal (23) of an amputated bone (20), the bone support surface (4) being configured for abutment against a severed end (22) of said amputated bone. A diameter (d1) of the base is configured to be larger than an average diameter of a shaft (21) of said severed bone, the soft tissue load bearing surface (5) comprising a generally planar or slightly curved central portion (10) and a convexly curved radially outward portion (11) with a curvature greater than the central portion, the central portion (10) being oriented at an angle of between 4° to 8° to the bone support surface.

The present invention discloses an equal-channel deformation mould for preparing block-body ultra fine grain metal. Said equal-channel deformation mould includes the following several portions: pressure rod, upper mould, fastening sleeve, lower mould and base seat, in the upper mould interior and lower mould interior are respectively cut two crossed equal-diameter channels. Besides, said invention also provides the concrete structure of above-mentioned every portion, and also provides the concrete application method of said equal-channel deformation mould.

The invention relates to a composite post insulator manufacture method. The manufacture method includes the following steps of (1) manufacturing a lining pipe and winding a glass fiber layer, a thermal shrinkage tape layer and a demolding Teflon tape layer on a glass steel core rod; (2) manufacturing a left end pipe and a right end pipe and subjecting the left end pipe and the right end pipe to surface processing; (3) gluing the left end pipe and the right end pipe to two ends of the lining pipe. By means of the composite post insulator manufacture method, a composite post insulator is widely applicable to fields of cryogenic engineering, good in cryogenic mechanical property, electrical property and gas tightness, and resistant to high pressure.

The invention discloses a six-propeller underwater robot which comprises a main body. First propellers are respectively arranged in the middles of the front lateral side, the rear lateral side, the left lateral side, the right lateral side and the bottom surface of the main body, the top of the main body is connected with a buoyancy body through a support rod, a driving device is arranged in the main body, a control box and a power box are arranged on the main body, the end of an output shaft of the driving device is fixedly connected with the middle of a support seat, a fixed frame is arranged at one end of the support seat, and a second propeller is arranged on the fixed frame. Due to the fact the four first propellers are arranged in the horizontal direction of the six-propeller underwater robot, the robot can change propelling direction without turning during reversing. Thus, the flexibility for the robot to move underwater is improved. By means of the rotary propellers, the propelling speed of the robot is improved. When the propelling direction of the robot is determined, the second propeller can be rotated to the corresponding position through the output shaft of the driving to accelerate the robot.

The invention provides a RPC steel joist combined bridge floor and a continuous beam bridge. The RPC steel joist combined bridge floor includes a joist-box type beam, the joist-box type beam includesa top plate, a lower wing panel which is arranged at the bottom of the joist-box type beam and two ventral plates, and two sides of the lower portion of the two ventral plates are separately connectedwith RPC stiffening portions in a fixing mode; each of the RPC stiffening portions includes a soffit formwork and a RPC layer, one end of the soffit formwork is fixedly connected below the each of the ventral plates, the other end of the soffit formwork extends outward in the two sides of the joist-box type beam direction, and the RPC layer is filled in a region surrounded by the soffit formwork,the ventral plates and the lower wing panel; and each of the ventral plates is fixedly connected with a small vertical beam, the small vertical beam is fixedly connected with a bridge floor steel bottom plate, and the bridge floor steel bottom plate is poured with a RPC bridge floor. A lower layer bridge floor of the two layer bridge floor is the RPC steel joist combined bridge floor. The bridgefloor of the double layer continuous beam bridge is the RPC steel joist combined double layer bridge floor. The RPC steel joist combined bridge floor and the continuous beam bridge have the advantagesof high strength, light weight, good bearing, fatigue resistance, long service life and so on.

What is proposed is a variator disk for a toroidal variator, in particular for a motor vehicle toroidal transmission. The variator disk has a curved running surface which is oriented coaxially with respect to a variator axis and on which rollers of the toroidal variator can roll. The variator disk having furthermore at least two partial disks which are designed as a traction disk, on which the running surface is formed, and as a supporting disk, respectively. The supporting disk is designed for supporting axial forces applied to the running surface. The traction disk is supported on the supporting disk in the radial direction to the variator axis.

The invention discloses a precast concrete tubular column steel reinforced concrete beam joint structure and a construction method thereof. First insertion cylinders fixedly extend out of the two sides of a concrete tubular column; insertion cylinders are fixedly arranged in a steel reinforced concrete beam; connecting blocks in the first insertion cylinders at the two sides are fixedly connected through steel wire pull ropes; the side wall of the concrete tubular column is provided with a buffer groove allowing a second insertion cylinder to be movably inserted; the outer side of the second insertion cylinder is fixedly connected with an elastic block; the second insertion cylinder is rotatably connected with a first adhesion plate; and a second adhesion plate is fixedly connected in the buffer groove. In the use process, through cooperative arrangement of the second insertion cylinder, the elastic block and the buffer groove, the connection stability and the anti-seismic buffer capability are improved; and through cooperative arrangement of a hydraulic push plate, a trigger assembly and a piercing assembly, the first adhesion plate and the second adhesion plate are fixedly connected through gluewater, and the connection stability between the second insertion cylinder and the buffer groove is improved.

The invention discloses a flexible charging connection device and charging equipment. The flexible charging connection device comprises a first support part and a second support part connected in thefirst support part, spherical rotation can be performed between the second support part and the first support part, a first end of the first support part is provided with an opening, and the first endof the second support part is also provided with the opening; a butt joint part is arranged in the second support part, is used for being connected with a charging plug and faces the opening in the first end of the second support part; and a limiting part is arranged on the second support part and used for limiting a range of spherical rotation of the second support part relative to the first support part so that the butt joint part is located in an opening range of the first end of the first support part. The flexible charging connection device can achieve an effect of flexible connection with the charging plug, is simple in structure and convenient to assemble, can improve a load bearing capacity, and is suitable for application scenes with high-power charging requirements.

The invention discloses a mobile platform for routing inspection and maintenance of a cylindrical steel structure, which mainly relates to the field of automatic equipment and comprises a machine body, a controller and a maintainer driving and bearing mechanism, wherein the machine body comprises a first machine body and a second machine body which are hinged to each other, a driving motor and a two-stage speed reducer are arranged in the machine body, the number of output gears of the two-stage speed reducer is two, planet carriers are arranged on the two output gears, and the two planet carriers are connected in a hinged mode; and the maintainer driving and bearing mechanism comprises a rodless cylinder and a linear guide rail. The mobile platform can be adsorbed on the surface of the steel structure, can walk on the steel structures with different diameters and can span nodes of the steel structures; meanwhile, equipment with different functions can be carried as required and can dolinear motion on the guide rail, so that the operation range is expanded; and the power supply is externally connected, and the pneumatic guide rail adopts gas as a medium, so that the dead weight ofthe mobile platform is reduced, and the load bearing capacity of the mobile platform is improved.

The invention relates to a category-5-enhanced non-shielded dual-sheath armoured symmetric data cable used for the Ethernet. The symmetric data cable is characterized by comprising a core body outer sheath, a non-woven fabric layer, dual layers of inner sheaths and four groups of cable cores arranged in the dual layers of inner sheaths from outside to inside, wherein a steel wire armoured layer is arranged between the non-woven fabric layer and the dual layers of inner sheaths. According to the scheme, the dual-layer sheaths and the steel wire armoured layer are arranged, so that the probability of embedding the communication data cable underground in a severe environment can be effectively improved; due to the double sheaths and the steel wire armoured layer, the bearing capacity and the compression resistance of the communication data cable are improved; and meanwhile, the cable is convenient to use and simple to lay.

The invention discloses a coplanar motion device driven by a unilateral linear motor and used for packaging an optoelectronic device. A first motion module and a second motion module in two perpendicular directions are designed on the same base, and each motion module forms a whole from top to bottom and is independent of the other motion module. A moving platform can move in different directions without interference, it can be guaranteed that the moving platform has higher precision, higher load is achieved, and the device is simple and compact in overall structure and convenient to machine and assemble.

Disclosed is an elevator landing sill. The elevator landing sill is mainly characterized by comprising a base plate, a right dragging block, reinforcing ribs, clamping hooks, an ash leaking groove, a cylindrical hole, a left lower dragging block, an antiskid groove and kidney-shaped holes. The base plate is of a U-shaped structural style. The right dragging block is perpendicularly connected with the upper end of the right side wall of the base plate, and is of an L-shaped structural style. The left lower dragging block is perpendicularly connected with the upper end of the left side wall of the base plate. The antiskid groove is formed in the top surface of the left lower dragging block. The ash leaking groove is formed between the base plate and the left lower dragging block. The clamping hooks are arranged at the bottom of the ash leaking groove. The reinforcing ribs are arranged on the portion, close to the middle, of the outer wall on the left side of the base plate. The kidney-shaped holes are formed in the bottom surface of the base plate. The cylindrical hole is formed in the left lower dragging block.