4 results about "Cone shell" patented technology

The utility model relates to the technical field of seeding devices, in particular to a sand aerial seeding seed cone manufacturing device which comprises a triangular pyramid tray, a cover plate, a seed storage mechanism and a locking mechanism, the cover plate is arranged on the triangular pyramid tray, the seed storage mechanism is arranged on the triangular pyramid tray, and the locking mechanism is arranged on the triangular pyramid tray. The locking mechanism is arranged between the triangular pyramid tray and the cover plate, the seed storage mechanism comprises a triangular pyramid body, a seed storage cavity, a cone shell and a seed nutrition layer, the triangular pyramid body serves as a seed aerial seeding carrier and is embedded into a soil layer through cone kinetic energy, and the cone shell can be gradually collapsed after absorbing water in soil, so that the seed nutrition layer is formed; according to the device, the seeds can be further exposed in a sand land environment, a microenvironment is created through the seed nutrition layer, a suitable and timely growth environment is provided for seedling emergence of the seeds, the seedling rate of the aerial seeding seeds can be increased, meanwhile, the device can reduce manpower and material resource investment, and the limitation of seeding topographic conditions can be reduced.

The three-degree-of-freedom centrosymmetric distributed driving variant nose cone comprises a plurality of sections of circular-truncated-cone-shaped shells which are coaxially connected in a sleeving mode, the diameters of the circular-truncated-cone-shaped shells are decreased step by step, and a centrosymmetric bearing transverse plate is fixedly arranged in each section of circular-truncated-cone-shaped shell and used for providing a branched chain installation reference; the adjacent circular-truncated-cone-shaped outer shells can move relatively so as to achieve stretching or bending deformation. Three sets of driving branch chains and three sets of driven branch chains are arranged between the bearing transverse plates of every two adjacent sections of the circular-truncated-cone-shaped shell, the three sets of driving branch chains and the three sets of driven branch chains are distributed in a central symmetry mode in the circumferential direction of the bearing transverse plates, and the circumferential included angle between every two adjacent branch chains is 120 degrees. The top pneumatic effect can be optimized by increasing the curvature of the conical head part of the fifth section of head conical shell; through the combined arrangement of the SPS branch chains and the RSR branch chains, more flexible deformation is achieved, and sufficient center space is achieved; by arranging the transverse plate, the position of the base is flexible, and the pressure of the shell can be reduced. The device can be used for design or reference in the field of aerospace aircrafts or high-performance vehicles.

The invention relates to the technical field of water pump operation, in particular to a stabilizing mechanism for a middle-open type water pump. The hub comprises a hub body and a front water guide cone which are connected, the front water guide cone comprises a cone shell and a cone cover closed on one side of the tip end of the cone shell, a central through hole is formed in the center of a side plate on one side of the tip end of the cone shell, a groove is formed in the outer edge of the side plate in the circumferential direction, and a boss matched with the groove is arranged on the outer edge of the inner side wall of the cone cover in the circumferential direction. The polyurethane foam is filled in the cavity of the hub body and the cavity of the front water guide cone, water is effectively prevented from invading the space in the cavity, the situation of water seepage is fundamentally eradicated, meanwhile, media in the cavity can support the inner wall of the hub body and the inner wall of the front water guide cone, and the problems existing in the prior art are solved.

The application discloses a multi-stable thin cone shell dense arrangement energy absorption metamaterial, which comprises a top plate and a bottom plate, and a plurality of arrayed thin cone shell cells are connected between the top plate and the bottom plate; the thin cone shell cells are made of high-elastic rubber and have a hollow structure; each thin cone shell cell is composed of an upper cone shell and an inverted lower cone shell which are sealingly connected; energy absorption unit shafts are arranged at the top of the upper cone shell and the bottom of the lower cone shell; second exhaust holes are formed in the middle of the energy absorption unit shafts and communicate with the inner cavities of the thin cone shell cells; first exhaust holes are formed in the top plate and the bottom plate and communicate with the second exhaust holes; and a preparation method of the multi-stable thin cone shell dense arrangement energy absorption metamaterial is also disclosed. D The energy absorption metamaterial is prepared by printing technology and has the characteristics of multi-stable equilibrium state and sustainable conversion between states, and can be repeatedly used.