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11035results about "Lifting frames" patented technology

Battery change system of portable electric car and change method thereof

The invention discloses a battery change system of a portable electric car and a change method thereof. The system is provided with a foldable electric hydraulic lifting platform, a battery box lifting platform trolley, a battery box pallet and an integrated control platform. In the foldable electric hydraulic lifting platform, foldable horizontal and vertical scissor mechanisms are adopted so that the storage and transportation spaces are compressed and the carrying is convenient; and during the operation, the car is lifted through the vertical scissor mechanism so that the battery box lifting platform trolley can enter the lower side of the car to dismount and change the batteries. An adjusting and positioning battery box with three degrees of freedom, which is remotely controlled to realize transverse movement, longitudinal movement and horizontal rotation, and a horizontal rotation platform which is lifted by means of the a double-layer scissor mechanism are loaded on the battery box lifting platform trolley. By means of a video monitoring camera and a laser positioner, the battery box can be correctly positioned by the battery box pallet; and the operations of the devices are remotely controlled by the integrated control platform. Through the invention, the difficulties that the car batteries cannot be changed and electricity change is badly needed during the running of the car are solved and the batteries of the electric car can be directly changed without an electricity change station.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Motor vehicle pneumatic jacklift system

A permanently mounted pneumatic jack (jacklift) system for motor vehicles, as well as an impact wrench for removing and installing lug nuts. The system provides a quick and safe means of lifting one or more tires off the ground for replacement of a spare or rotating the tires on a motor vehicle. The present invention comprises two or more (typically four) pneumatic jacks, a system ON/OFF switch, an air compressor, a 120-psi air tank, air lines (hoses), individual jack extend/retract switches, jack position-locking pins, safety-locking pins, and impact wrench. Each jack can be locked in a horizontal stowaway or vertical operational position. The jack is cylindrical shaped with a telescopic body that can be extended or retracted as needed to raise and lower the vehicle. A solid cylindrical lift rod slides inside a cylindrical outer housing with a high-pressure seal means used to maintain pressure on the support rod. A ground support foot (plate) is mounted on the lower end of the solid cylindrical lift rod to provide sufficient traction with the ground to support the lifting process. A quick release air coupler is included on the pneumatic chamber to support the use of an air hose and impact wrench. An extend/retract toggle switch is included on each jack to control a solenoid valve to allow the air to flow into the jack. A quick release safety-locking pin is used to mechanically pin the solid cylindrical lift rod to the outer housing once the desired height is achieved to assure that the vehicle does not fall down in the event of a high-pressure air loss, thereby providing safety to the person(s) working around the vehicle. An air compressor located in the engine compartment of the vehicle is mechanically belt-driven off the engine. A high-pressure air line carries the air to a high-pressure (at least 120-psi) air tank located in the trunk or other suitable storage area on the vehicle. Separate air lines extend from the air tank to the individual jacks.
Owner:WILLETT MICHAEL J

Shear type hoisting device

The invention provides a scissors lifting device which comprises a loading plate, a bottom plate, two groups of connecting rods which are in X-shaped cross connection and drive elements of connecting rods, wherein the bottom plate is glidingly connected with the lower end of one pair of co-rotating connecting rod of the two groups of the connecting rods through a drive slide block, the loading plate is glidingly connected with the upper end of another pair of the co-rotating connecting rod by a slide block , the lower end of another pair of the co-rotating connecting rod is fixedly connected with the bottom plate, the drive slide block is provided with a screw hole, and a screw rod passes through the screw hole and is meshed with a screw pair of the drive slide block. The drive elements of the connecting rods include a large gear, a small gear, a rough adjusting knot, and a fine adjusting knot, one end of the screw rod is fixed on the bottom plate, the other end of the screw rod is coaxially connected with the big gear, the small gear is meshed with the gear pair of the large gear, the rough adjusting knot is coaxially connected with the large gear, and the fine adjusting knot is coaxially connected with the small gear. The scissors lifting device of the invention has the advantages that frictional force of each joint is small, the loading amount is large, and a loading platform is stable without swinging in the lifting process of the whole device and has the function of slow rising and quick descending.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD

Rotating jacking mechanism and AGV comprising same

The invention discloses a rotating jacking mechanism and an AGV(Automatic Guided Vehicle) comprising the same and belongs to the field of automatic conveying devices. The rotating jacking mechanism comprises a base fixing plate, a rotation motor, a transmission assembly, a lead screw, a lead screw nut, a large bearing bracket, a large bearing and a hollow tray. The lead screw penetrates through the base fixing plate, and the lead screw is supported on the base fixing plate through the lead screw nut. The large bearing bracket, the large bearing and the tray are sequentially arranged on the lead screw from bottom up. The rotating motor and the transmission assembly are in transmission connection, and the transmission assembly is in transmission connection with the tray and the lead screw. The AGV comprising the rotating jacking mechanism comprises two driving wheels, four universal wheels, a battery pack, two driving motors, a driving motor driver, a vehicle body frame, two control boards, a tray support, two right-angle driving motor reduction boxes, a navigation device and two infrared sensors. According to the invention, the structure is flexible and compact, the dead weight capacity is large, the self-locking performance is good, the lead screw can ascends stably in a rotary manner and the requirements for flexible carrying can be met.
Owner:湖州上电科电器科学研究有限公司 +3

Electric shear type lifting platform

The invention discloses an electric shear type lifting platform, which comprises an upper movable bearing platform, a lower base, a mechanical lifting mechanism and a power driving mechanism, wherein the mechanical lifting mechanism is provided with a plurality of shear fork components, the power driving mechanism is a screw horizontal track feed actuating mechanism and comprises two screws which are parallel to each other and correspondingly arranged side by side, a driven end of each screw is in rotating connection with the position at the bottom end of one side of the bottom shear forks through a bearing, threaded sections of the screws are movably connected with a parallel moving block with internal threads matched with the threaded sections, the parallel moving block is fixedly connected with the bottom end of the other side of the bottom shear forks, folding and unfolding of the bottom shear forks can be realized by the aid of the parallel moving block and horizontal track feed along the screws, and further the upper movable bearing platform is supported to ascend and descend. The power driving mechanism is controlled by means of motor drive, so that folding and unfolding of the shear forks are realized, the upper movable bearing platform is kept parallel to the lower base, and further the lifting platform is stable in operation, low in manufacture cost and wide in application.
Owner:SHANGHAI UNIV
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