11results about How to "Fast stretching" patented technology

The utility model discloses an intelligent toilet bowl cleaning device and an intelligent toilet bowl, the intelligent toilet bowl cleaning device comprises a mounting seat, a cleaning pipe, a driving gear arranged on the mounting seat and a power mechanism driving the driving gear to rotate, and the cleaning pipe is slidably connected to the mounting seat; the cleaning device is characterized in that the cleaning pipe comprises an inner pipe and an outer pipe which are mutually nested and can relatively slide and stretch in the axial direction, the outer pipe is provided with a second rack meshed with the driving gear, at least one transmission gear is rotationally arranged on the outer pipe, the mounting base and the inner pipe are provided with a first rack and a third rack respectively, and the first rack and the third rack are meshed with the transmission gear. The driving gear rotates to drive the second rack to move so that the outer pipe can move relative to the installation base, and meanwhile the transmission gear rotates under the action of the first rack so that the third rack can be driven to move so that the inner pipe can move relative to the outer pipe. The whole structure of the cleaning device is more compact and small.

The invention provides a high-speed cable parallel rigid-flexible coupling redundant robot which comprises a static platform, a driving system, a pulley system, a driving branch chain and a movable platform. The static platform is installed at a fixed position in a plant and provides a fixed base for the whole robot. The three driving systems are fixedly mounted on the static platform, a group of driving ropes are led out respectively, and the driving ropes are guided by the pulley system and are finally connected to the movable platform; the upper ends of the driving branch chains are connected to the static platform, the lower ends of the driving branch chains are connected to the movable platform, and the driving branch chains can be driven by the branch chain driving system to stretch. The rope is controlled to be wound and unwound through the driving system, and three-degree-of-freedom translation of the robot terminal and active adjustment of cable force distribution are finally achieved in combination with telescopic movement of the driving branch chains.

The outer mold machining center for steam turbine valve casting comprises a machine body, a portal frame and a workbench, and further comprises a pair of telescopic arms which are installed on the two sides of the top face of the workbench face through corresponding sliding grooves. The pair of material lifting and clamping devices are mounted on the adjacent sides of the telescopic arms correspondingly and used for being matched with each other to lift and fix the workpieces; the telescopic control device is used for controlling the pair of telescopic arms to stretch out of or retract into the corresponding sliding grooves, in daily use, by means of the technical scheme, a worker only needs to start the telescopic control device to enable the pair of telescopic arms to stretch out, then the flat trolley is adopted to transfer the wooden outer mold to the position between the outer ends of the pair of telescopic arms, and the wooden outer mold can be conveniently taken out. And then the material lifting clamp is started to lift the wood outer mold and fix the wood outer mold between the pair of telescopic arms, the telescopic arms can retract into the sliding groove under the action of the telescopic control device, a wood outer mold blank is transferred to the position below the portal frame and fixed, the same way is adopted during discharging, feeding and discharging are conducted without the help of external equipment, and operation is convenient.

The invention discloses a luffing tower crane hydraulic system and a control method. The luffing tower crane hydraulic system comprises an oil tank, a system controller, a motor, a load-sensitive pump, an oil cylinder control valve group, a load-sensitive multi-way valve and a hydraulic cylinder. The oil cylinder control valve group comprises a pressure type balance valve; an oil outlet of the load-sensitive pump is connected with an oil inlet of the load-sensitive multi-way valve through a first oil way, the load-sensitive multi-way valve is connected with a rod cavity and a rodless cavity of the hydraulic cylinder through a second oil way and a third oil way respectively, and the second oil way is connected with the rod cavity through the pressure type balance valve. A pressure type balance valve is arranged, so that the hydraulic cylinder is effectively prevented from shaking and crawling, and the service life of the hydraulic cylinder is effectively prolonged; by arranging the load-sensitive multi-way valve, cavitation and burning of a piston main seal in the hydraulic cylinder are effectively avoided, the service life of the hydraulic cylinder is effectively prolonged, meanwhile, the telescopic speed of the hydraulic cylinder can be effectively increased, and therefore the working efficiency of the whole machine is improved.

The invention discloses a space manipulator with a reconfigurable working space, and belongs to the technical field of space manipulator design. The space manipulator comprises a first end effector, a first joint, a first connecting rod, a second joint, a second connecting rod, a third joint, a first telescopic arm rod, a third connecting rod, a fourth joint, a fourth connecting rod, a second telescopic arm rod, a fifth joint, a fifth connecting rod, a sixth joint, a sixth connecting rod, a seventh joint and a second end effector which are connected in sequence. The first telescopic arm rod and the second telescopic arm rod are both telescopic arm rods, the working space of the mechanical arm and the range of the flexible working space are adjusted by changing the lengths of the two arm rods, reconstruction of the working space and the flexible working space is achieved, and the problem that the working capacity is limited in the limited installation space is effectively solved.

The application discloses a tunneling machine and a propelling hydraulic system thereof, comprising a first oil cylinder, a second oil cylinder and a third oil cylinder, and further comprising: a propelling oil supply system for oil supply in a propelling operation mode; an assembling oil supply system for oil supply in an assembling operation mode; and an operation mode switching valve group connected with each oil cylinder and the propelling oil supply system and the assembling oil supply system respectively and used for switching between the propelling operation mode and the assembling operation mode, wherein in the propelling operation mode, the propelling oil supply system supplies oil to all the oil cylinders to obtain greater propelling force, and in the assembling operation mode, the assembling mode oil supply system supplies oil to only two oil cylinders distributed on both sides of a group of oil cylinders, and an oil cylinder arranged in the middle follows to obtain a faster oil cylinder extension and retraction speed. The application improves the oil cylinder extension and retraction speed in the assembling mode without increasing the specification of the hydraulic pump, thereby improving the economy and operation efficiency of the system and making the force on the shoe bottom more balanced.

The utility model discloses an inclined shaft car catching device, including the lifting frame and be used for lifting the first steel wire rope of lifting frame, still include support, telescopic cylinder, baffle, angle steel stand and second steel wire rope. Lifting frame is walked up and down along angle steel stand through gyro wheel. The cylinder body of telescopic cylinder is fixed on the support, and its piston rod end installs the movable pulley, still is installed with the trolley wheel between located telescopic cylinder and lifting frame on the support. One end of first steel wire rope is fixedly connected with the support, and the other end is fixedly connected with lifting frame after passing movable pulley and trolley wheel in proper order. The utility model discloses using telescopic cylinder, trolley wheel and movable pulley cooperation, and the actual moving speed of lifting frame is two times of telescopic cylinder speed, and has improved work efficiency, and still has little impact and other advantages.

The application discloses a kind of piezoelectric film fast stretching process, including the steps of precursor processing, granulation preparation, extrusion molding, fast stretching, high pressure polarization and winding into warehouse.The application can effectively improve the stretching speed and reduce energy consumption by replacing the traditional solid roller with a semi-solid stretching roller to reduce the self-weight.Secondly, the stretching unit with inclined vertical structure and the silicone or rubber anti-slip layer coated on the surface of the semi-solid stretching roller can not only compensate for the film slipping and high system tension problems that occur during high-speed stretching of horizontal and vertical structures respectively, but also further reduce the slipping effect by increasing the friction, effectively avoiding potential film wrinkles, uneven stretching hazards and equipment energy consumption defects.In addition, the high stretching rate can effectively prevent the recovery of the oriented PVDF molecular chain, thereby achieving efficient and fast preparation of piezoelectric film in the actual production process.

The utility model is suitable for the technical field of coating equipment, and provides a push rod mechanism and coating equipment. The first belt or chain is mounted on the fixed guide rail and arranged in the length direction of the fixed guide rail; the rotating motor is in transmission connection with the first belt or chain and used for driving the first belt or chain to rotate; the movable guide rail is movably arranged on the fixed guide rail and connected with the first belt or chain, and the first belt or chain can drive the movable guide rail to stretch out and draw back relative to the fixed guide rail; the second belt or chain is installed on the movable guide rail and arranged in the length direction of the movable guide rail, and the movable guide rail is connected with the second belt or chain and can drive the second belt or chain to rotate; the second belt or the chain can drive the push rod to stretch out and draw back relative to the movable guide rail. The push rod mechanism provided by the utility model not only can realize long-stroke telescopic movement of the push rod, but also is simple in implementation structure and low in implementation cost.

The invention relates to the technical field of excavators, in particular to an excavator used for mine excavation and provided with a protection device. The excavator used for mine excavation and provided with the protection device comprises a moving assembly, a control assembly and an excavation mechanism, the excavation mechanism comprises a swing arm part, a bucket and a bucket hydraulic assembly, and the bucket hydraulic assembly comprises a bucket hydraulic part, a protection air bag part, two cleaning and cooling parts and an extrusion part. The control assembly is used for controlling the moving assembly to move and meanwhile can control the excavating mechanism to excavate, a swing arm piece of the excavating mechanism is used for controlling a bucket to move up and down, a bucket hydraulic piece of the bucket hydraulic assembly is used for controlling the bucket to excavate, and a protective air bag piece can release internal air after being pressed. The cleaning and cooling part can guide gas into the bucket hydraulic part, dust removal and cooling are conducted on the bucket hydraulic part, then the service life of the bucket hydraulic part is prolonged, and the extrusion part can extrude the protective airbag part.