40results about How to "Low motion friction" patented technology

The invention relates to a device for measuring rotational inertia and friction moment of a ball screw. The device comprises a bottom plate, two linear guide rails, the ball screw, a torque sensor, a servo motor, a mobile platform and two friction moment measuring mechanisms. Each linear guide rail is provided with two sliding blocks. The two ends of the ball screw are supported by the part, located between the two linear guide rails, of the bottom plate in a rotary mode through a fixed supporting base and a floating supporting base. One end of the torque sensor is connected with the end, supported by the fixed supporting seat, of the ball screw through a coupler. An output shaft of the servo motor is connected with the torque sensor through a coupler. The two friction moment measuring mechanisms are arranged on the two sides of a screw nut base respectively. Each friction moment measuring mechanism comprises a cantilever. A connecting sleeve is arranged at the tail end of each cantilever. Each connecting sleeve is connected with a sliding bar through a vertical linear bearing. The other end of each sliding bar is connected with a pressure sensor. Each sliding bar is sleeved with a spring. The bottom of each pressure sensor is connected with a universal ball. The bottom of each universal ball makes contact with a linear slab which is parallel to the ball screw. The linear slabs are tightly connected to the bottom plate.

The invention relates to a seal side hung door. The seal side hung door comprises a door installation board, a sliding door assembly slidably installed on the door installation board and a driving mechanism driving the sliding door assembly to slide along the door opening and closing direction in order to open and close an opening of the door installation board. The sliding door assembly comprisesa pull board and a door board. The pull board can slide along the door opening and closing direction. Upper and lower ends of the door board are connected with the pull board through connection assemblies. Each connection assembly comprises an oblique sliding rail and a sliding block. The oblique sliding rail is obliquely arranged relative to the door board. The sliding block is in sliding fit with the oblique sliding rail. One of the oblique sliding rail and the sliding block is fixed on the pull board while the other is fixed on the door board. The above connection assembly further comprises an elastic part connected between the pull board and the door board such that each sliding block can be located at the initial position relative to the oblique sliding rail during door opening and closing process. The door installation board is provided with a limiting part which limits the door board to continue sliding after the opening in the door board is closed. The seal side hung door is simple in structure, small in motion friction and good in seal effect.

The invention discloses a glass lifter. The glass lifter comprises a guide rail (1) and sliding blocks (2) arranged inside the guide rail (1), wherein the guide rail (1) is a long groove-shaped guide rail composed of a first guide surface (3) and second guide surfaces (4) arranged on the two sides of the first guide surface (3); the sliding blocks (2) comprise sliding block bodies (8) in corresponding contact with the first guide surface and guide wheels (7) in corresponding contact with the second guide surfaces (4); and the sliding blocks are connected with a lifting mechanism through connecting shafts (5). According to the glass lifter structure, the traditional manner that the sliding blocks are in contact with the guide rail is changed, the motion friction force between the sliding blocks and the guide rail is reduced, the wear speed of the sliding blocks of the lifter is reduced, and the service life of the sliding blocks of the lifter is prolonged.

The crawler-type air-floating transport vehicle includes a chassis, a power system and a control system are arranged on the chassis, the left and right sides of the bottom of the chassis are provided with crawler walking mechanisms with the same structure and symmetrical left and right, the middle of the chassis is provided with a frame, and the top of the frame is provided with The upper bracket is provided with a bearing plate horizontally on the upper bracket, the lower bracket is arranged at the bottom of the frame, and the left and right sides of the lower end of the lower bracket are respectively provided with a jet bearing device. The front and rear ends of the device are respectively connected with the crawler traveling mechanism through a link mechanism, and a spring is arranged between the chassis and the crawler traveling mechanism; an air compressor and a high-pressure gas storage tank are arranged in the frame, and the outlet of the high-pressure gas storage tank is connected with the high-pressure gas pipe through a high-pressure gas pipe. Air inlet connection of the jet bearing unit. The invention is easy to handle, easy to manufacture, low in cost, low in energy consumption, and high in safety and reliability, and is especially suitable for the handling of heavy goods in docks and ports.

The invention relates to a single-degree-of-freedom joint mechanical driven by two pneumatic artificial muscle assemblies, and belongs to the technical field of bio-robots. The single-degree-of-freedom joint mechanical driven by the two pneumatic artificial muscle assemblies can be used in leg joints of the four-footed bio-robots. The single-degree-of-freedom joint mechanical driven by the two pneumatic artificial muscle assemblies comprises the two pneumatic artificial muscle assemblies, two rotary parts, a thigh framework and a crus framework, wherein the two ends of the two pneumatic artificial muscle assemblies are connected with the rotary parts and pin shafts. The single-degree-of-freedom joint mechanical driven by the two pneumatic artificial muscle assemblies has the bionic advantages of being large in movement range, high in movement speed, good in flexibility and the like.