93results about How to "Smooth and precise movement" patented technology

A Force feedback type compliant orthotic device includes a fixing base, driving unit, first limb supporting unit, and second limb supporting unit. The driving unit has a motor disposed at the fixing base and an output shaft connected to the motor. The output shaft is inserted into a joint base to connect with a resilience unit. The first limb supporting unit has a first supporting element fixed at the fixing base and a first electromyographic signal sensor disposed at the first supporting element. The second limb supporting unit has a second supporting element disposed at the joint base and a second electromyographic signal sensor disposed at the second supporting element. The motor generates appropriate auxiliary power according to the sensing result of the first and second electromyographic signal sensors, such that the first and second supporting elements move relative to each other precisely.

The invention discloses a packing and stacking device for a smoke alarm assembly production line, belonging to the field of product assembly equipment. The packing and stacking device comprises a packing box feeding device, a grabbing and packing device, a conveying device and a stacking device, wherein the conveying device is arranged between the packing box feeding device and the stacking device; the packing box feeding device comprises a package pushing and conveying mechanism and a baffling mechanism; the package pushing and conveying mechanism and the baffling mechanism are arranged on one end of the conveying device; the grabbing and packing device stretches over the conveying device and the product assembly line; the stacking device comprises a stacking pushing and conveying mechanism, a stacking pushing-out mechanism and a lifting stacking mechanism; the stacking pushing and conveying mechanism is arranged on one side of the conveying device; the lifting stacking mechanism is arranged on the other side of the conveying device; and the stacking pushing-out mechanism is arranged on one side of the lifting stacking mechanism. According to the packing and stacking device, manual packing and stacking work is replaced by mechanical equipment, so that packing and stacking efficiency for smoke alarms is greatly improved; and manual labor intensity and labor cost are lowered.

A traffic signal device convenient to use comprises an upright mounting column and a display framework assembled at the top of the upright mounting column, wherein the display framework comprises a frame body, a plurality of rotating shafts assembled on the frame body and a drive device driving the rotating shafts to rotate; each rotating shaft is sleeved with a regular triangular prism; each regular triangular prism is provided with a first display surface, a second display surface and a third display surface; a plurality of first display surfaces jointly form a red light signal indication surface; a plurality of second display surfaces jointly form a yellow light signal indication surface; and a plurality of third display surfaces jointly form a green light signal indication surface. With the adoption of the traffic signal device, traffic signals can be switched among the red light indication surface, the yellow light indication surface and the green light indication surface which are jointly formed on the three display surfaces respectively through synchronous rotation of each regular triangular prism, so that a traffic indication function can be achieved without luminescence, the electric energy can be saved, a traffic signal controller is not required, and accordingly, the cost is greatly saved.

The invention provides an underwater bridge pier detection device and method thereof. The device is applied to a bridge pier. The device comprises an overwater frame and an underwater frame which are oppositely arranged on the periphery of the bridge pier, and a movable guide rod assembly and a lifting traction piece which are arranged between the two frames; annular driving pieces are arranged at the opposite ends of the overwater frame and the underwater frame correspondingly, the upper end and the lower end of the movable guide rod assembly are in transmission connection with the two annular driving pieces correspondingly and used for driving the movable guide rod assembly to rotate around the periphery of a pier, and the upper end and the lower end of the lifting traction piece are connected with the overwater frame and the underwater frame correspondingly for pulling the underwater frame to lift. The device also comprises a detection trolley which is arranged on the movable guide rod assembly in a sleeving mode and moves up and down, and the detection trolley is used for detecting the diseased part of the bridge pier. The device is suitable for piers in various shapes, can continuously scan the complete surface of the pier, and is high in working efficiency.

The invention relates to an ultrahigh-pressure hydraulic testing machine for a steel pipe, in particular to an internal type ultrahigh-pressure hydraulic pressure testing machine for a large-diameter steel pipe and a hydraulic system of the hydraulic pressure testing machine. The hydraulic testing machine comprises a piston cylinder body, a front cover, a rear cover, a piston, a piston rod, a rear-end zigzag nut, a front-end zigzag nut, an internal sealing mold and an external sealing mold, wherein the front cover and the rear cover are located at two ends of the piston cylinder body; the piston and the piston rod are located in the cylinder body; the rear-end zigzag nut is used for fixing the piton rod; the front-end zigzag nut is used for transmitting force to a tested steel pipe; the internal sealing mold and the external sealing mold are used for sealing and fixing the tested steel pipe; an inner cavity of the cylinder body is divided into a rodless cavity body and a rod cavity by the piston. The hydraulic system comprises a low-pressure oil power system, an electrical-hydraulic closed-loop control system, a high-pressure water pump accumulator power system, a low-pressure water supply system and an oil pressure driving device. According to the hydraulic testing machine and the hydraulic system, cylindrical closed space is formed in the tested steel pipe, and an ultrahigh-pressure hydraulic test can be performed on the tested steel pipe without any other external force; the hydraulic testing machine and the hydraulic system are suitable for the ultrahigh-pressure hydraulic test of the large-diameter steel pipe, the equipment weight can be greatly reduced, and the investment can be reduced by times.