8results about How to "Optimize the power transmission path" patented technology

The utility model relates to the technical field of bridge construction, and discloses a crossing movable platform attached to a high-altitude bridge, which comprises a space structure body, the top end of the space structure body is fixedly connected with the bottom surface of the bridge, and the space structure body comprises a plurality of polygonal annular frames; each polygonal annular frame comprises a polygonal bottom frame and vertical supporting frames distributed in the circumferential direction of the bottom frame. The multiple polygonal annular frames are sequentially arranged in the length direction of the bridge. The anti-falling net is arranged on the bottom surface and the circumferential direction of the space structure body in a tensioning manner; the climbing entertainment device is located in the space structure body and attached to the space structure body; the corners of the bottom frames of every two adjacent polygonal annular frames are aligned at the top points and connected through circumferential dampers used for consuming horizontal vibration, and metal dampers used for consuming vertical vibration are arranged between the top of the space structure body and the bridge. The technical problems that an ultra-long movable platform attached to a high-altitude bridge is greatly influenced by wind shock, and the sense of safety of tourists is low are solved.

The embodiment of the utility model provides a top cover assembly of a vehicle and the vehicle, and belongs to the technical field of vehicle parts, the top cover assembly comprises a top cover cross beam and a top cover outer plate arranged on the top cover cross beam, one end of a side wall connecting plate is used for being connected with a side wall assembly of the vehicle, the other end of the side wall connecting plate is connected with the top cover cross beam, and the top cover cross beam is connected with the top cover outer plate. And the reinforcing piece is connected with the top cover outer plate and the side wall connecting plate so as to support the top cover outer plate together with the top cover cross beam. According to the top cover assembly of the vehicle, the reinforcing piece is used for connecting the top cover outer plate and the side wall connecting plate, the reinforcing piece and the top cover cross beam jointly support the top cover outer plate, and therefore the structural strength of the top cover assembly is locally enhanced, redundant materials are reduced, and the weight of the whole vehicle is reduced on the premise that the bending resistance of the top cover assembly is guaranteed.

The application discloses a high-speed electric spindle and a use method, and belongs to the technical field of high-speed electric spindles. The high-speed electric spindle comprises a rotating assembly, a stationary assembly and a bearing arranged between the rotating assembly and the stationary assembly, and a gap is reserved between the rotating assembly and the stationary assembly. A tool knocking-off reverse buckling device, a cooling system and a lubricating system are arranged on the stationary assembly. The cooling system comprises cooling flow channels which are respectively arranged in a spindle shell and a spindle front bearing chamber. The spindle front bearing chamber is provided with a first circulating groove and a second circulating groove which are in communication with each other. The cooling flow channel of the spindle shell is in communication with the first circulating groove, the first circulating groove is in communication with the second circulating groove, and a throttling hollow top screw is arranged in the cooling flow channel of the spindle shell. An oil guiding channel is arranged in the spindle shell and is in communication with an annular lubricating groove of the spindle front bearing chamber. The high-speed electric spindle can reduce the tool knocking-off impact force borne by the bearing, has excellent heat dissipation and lubrication effects, is reliable in sealing, effectively stabilizes the spindle precision, prolongs the service life, and reduces operation and maintenance costs.

This utility model belongs to the field of floor slab reinforcement technology, and in particular to a floor slab structure, including a precast floor slab. Load-bearing walls are provided on both sides of the precast floor slab. An upper reinforcement component is provided above the precast floor slab. The upper reinforcement component includes a formwork and a post-cast concrete layer. The post-cast concrete layer is poured inside the formwork, and a bidirectional steel mesh is provided inside the post-cast concrete layer. Carbon fiber cloth is provided below the precast floor slab. Several transversely evenly distributed main beams are provided below the carbon fiber cloth, and several vertically evenly distributed secondary beams are provided below the transverse main beams. The upper layer combines the post-cast concrete layer and the bidirectional steel mesh to connect the dispersed precast slabs into a whole. The middle layer reinforces the tension zone with carbon fiber cloth, improving the bending load-bearing capacity and ductility of the precast floor slab. The lower layer, with its transverse main beams and longitudinal secondary beams, forms a supporting frame, achieving the effect of improving seismic reinforcement.

The utility model provides a pipe pile splicing positioning device which comprises a sleeve arranged on the outer side of a pipe pile head and an inter-pipe positioning mechanism, the inter-pipe positioning mechanism comprises a positioning platform, an outer supporting piece and an inner supporting piece, and the outer supporting piece is movably arranged on the positioning platform and can move in the direction close to or away from the sleeve so as to abut against the inner wall of the sleeve; the inner supporting piece is movably arranged on the positioning platform and can move in the direction close to or away from the pipe pile head so as to abut against the outer wall of the pipe pile head. By arranging the positioning platform, the inner supporting piece and the outer supporting piece, a force transmission system of the casing pipe, the outer supporting piece, the positioning platform, the inner supporting piece and the pipe pile head is formed, the overall force transmission path is simple, clear and reasonable, enough support can be provided for the casing pipe to resist the lateral pressure of the outer side soil body borne by the casing pipe, and the construction efficiency is improved. The sleeve is prevented from deviating or inclining, and the construction quality of pile splicing is ensured.

The utility model relates to the technical field of steel frame damping, in particular to an assembly type steel frame damping joint which comprises a plurality of upper connecting plates installed at the bottom end of an upper column, and the upper connecting plates are evenly distributed around the axis of the upper column. The lower connecting plates are mounted at the top end of the lower column and are uniformly distributed around the axis of the lower column; the upper connecting plates and the lower connecting plates are vertically inserted in a staggered mode and coaxially and rotatably attached to each other, and the outer sides of the attached connecting plates are sleeved with a positioning ring with the annular hole pattern being a spline hole. The spline holes provide accurate positioning and restraining for the connecting plate and the damping assembly. Under the action of earthquake force, all the components can work closely and cooperatively, so that the earthquake force is uniformly dispersed into the whole node structure. The joint can be effectively prevented from generating unnecessary displacement and shaking in the vibration process through close fit of the spline holes, and the stability of the structure is ensured. The shock absorption assemblies in the sub-holes buffer and absorb earthquake force from multiple horizontal directions, so that the shock absorption assemblies can respond rapidly, earthquake energy is converted into energy in other forms to be dissipated through self deformation and energy dissipation mechanisms, and horizontal annular shock absorption is achieved.

This application relates to the field of unmanned aerial vehicle (UAV) technology, and particularly discloses a propeller clamping device and a UAV. The propeller clamping device includes a propeller blade, a propeller clamping seat, a vibration damping mechanism, and a base assembly. The propeller clamping seat has a first clamping portion and a second clamping portion, symmetrically arranged on both sides of the propeller clamping seat along a first direction. The first clamping portion clamps one propeller blade, and the second clamping portion clamps another propeller blade. The vibration damping mechanism includes a first shim and a second shim. Along a second direction, two first shims are respectively disposed on both sides of the propeller blade and located between the propeller blade and the first clamping portion, and two second shims are respectively disposed on both sides of another propeller blade and located between the propeller blade and the second clamping portion. The propeller clamping seat is mounted on the base assembly. Through the above structure, the first shims and the second shims can improve the force transmission path between the propeller blade and the first and second clamping portions, absorb the vibration and impact force in the rotational axis when the propeller blade rotates, reduce friction and wear between the propeller blade and the propeller clamping seat, and extend service life.