9results about How to "Reasonable design structure" patented technology

The utility model relates to a children's pushchair wheel directional structure belongs to children's pushchair production technical field. Including front support and pushchair wheel component, the upper and lower ends of front support are connected with front leg joint and front wheel seat respectively, the cavity of front leg joint is rotatably provided with cam, the linkage that is matched with cam is set up in the front support, the directional bolt that can move between directional locking position and directional unlocking position is slidably arranged in the plug of wheel seat, the directional lock hole that is matched with directional bolt is set up on pushchair wheel component, the transmission of linkage is between cam and directional bolt, through the rotation operation to cam, makes directional bolt between directional locking position and directional unlocking position displacement. The utility model has the following beneficial effects: the structure of linkage is reasonable, and the reliability is higher, and the service life is longer, makes product whole design structure reasonable, and the conception is ingenious, has good practicality, has essential characteristics and progress compared with prior art.

The invention relates to a double-acting torque driven vibration well cementation float shoe which comprises an upper connector and a lower connector. The stator assembly is in threaded connection with the upper joint and is used for changing the flowing direction of the cement fluid in the stator assembly; and the rotating assembly is rotatably connected with the stator assembly and is used for rotating on the basis of changing the flowing direction of the cement fluid to generate axial vibration and radial vibration. The accident rate of well cementation operation under complex working conditions can be reduced, and the well cementation quality is improved; meanwhile, the tool is simple in structure, stable in vibration, convenient to assemble and manufacture, long in service life and high in applicability.

The utility model provides a small-sized simulation mine hoist for a friction liner test. The small-sized simulation mine hoist comprises a rack; a rotatable hoist drum; the friction liners are installed on the outer wall of the winding drum, the multiple friction liners are connected end to end and surround the circumferential direction of the winding drum, and at least two rope grooves are formed in the outer surface of each friction liner; the repairing mechanism comprises a repairing tool which can freely move in the horizontal direction and can rotate; according to the utility model, the design structure is reasonable, the mini mine hoist similar to the actual equipment structure is designed to test and simulate the use of the friction liner, the cost is low, the potential safety hazard is small, the data such as the rotating speed and the load of the hoist drum can be effectively controlled, and the test precision is improved; in addition, the repairing tool is arranged on one side of the hoist winding drum, the rope groove can be rapidly repaired under the condition that the rope groove of the friction liner is abraded and the friction liner is not detached, and the beneficial effects of being convenient to operate and high in working efficiency are achieved.

The utility model provides a fire-resistant prefabricated member with a rapid cooling function. The fire-resistant prefabricated member comprises a fire-resistant base body; the metal base is fixedly connected to one side of the non-working surface of the refractory base body, and a hollow cooling cavity is formed in the metal base; the metal fins are fixedly connected to the surface of the base and extend towards the interior of the fireproof base body, and the extending depth is 30%-70% of the thickness of the fireproof base body; according to the utility model, the design structure is reasonable, the perfect combination of efficient cooling and long-acting service is realized through the design of a metal and refractory material composite structure, a cooling system formed by the metal base and the metal fins can quickly lead out heat accumulated in the refractory base body, and the heat dissipation efficiency can be obviously improved; besides, the thermal stress between the metal and the refractory material is effectively relieved through the reinforcing layer and the wrapping layer, the thermal shock resistance and the structural stability of the prefabricated part are greatly enhanced, and the metal assembly subjected to antioxidant treatment shows excellent durability in a high-temperature corrosion environment.

The utility model provides an intelligent composite air cooling device which comprises an outer shell, a draught fan, a dry type air cooling unit, a water collecting device, a spraying pipe, an evaporative cooling unit and a circulating water tank are sequentially arranged in the outer shell from top to bottom, and the dry type air cooling unit is communicated with the evaporative cooling unit. A working medium can be led out after sequentially passing through the dry-type air cooling unit and the evaporative cooling unit, and a medium leading-out pipe communicated with the evaporative cooling unit is mounted on the outer shell; the fresh air channel is arranged between the dry-type air cooling unit and the water collecting device, so that outside air can penetrate through the electric shutter to enter the fresh air channel, newly introduced cold air and wet and hot air penetrating through the water collecting device are mixed to achieve the cooling purpose, the original logarithmic temperature difference of an air cooling section is improved, and the cooling efficiency is improved. Meanwhile, the total heat load of the evaporation section can be reduced, the water consumption of the evaporation section is reduced, and the total amount of water vapor entering the air cooling section is reduced.

The utility model provides a combined air brick structure which comprises a shell with a conical structure, an upper brick body arranged at the upper part in the shell and a lower brick body arranged at the lower part in the shell, and further comprises a buffer layer arranged at a position between the upper brick body and the lower brick body and arranged to coordinate the thermal expansion difference between the upper brick body and the lower brick body, the upper brick body or the lower brick body is prevented from cracking; the reinforcer is arranged at the inner position of the integral structure formed by the upper brick body, the buffer layer and the lower brick body and is used for enhancing the bonding strength between adjacent interfaces; the air brick is reasonable in design structure, the thermal expansion difference of the upper brick body and the lower brick body is coordinated by arranging the buffer layer, the problem of brick body cracking caused by overhigh thermal stress under the high-temperature working condition is avoided, and the bonding strength of adjacent interfaces can be remarkably enhanced by utilizing the reinforcers, so that the overall structure of the air brick is more stable under the high-temperature working condition, and the service life of the air brick is prolonged. And the service life of the air brick is prolonged.

The invention relates to a deepwater and ultra-deepwater well cementation multifunctional vibration guiding shoe which comprises a radial vibration module and a rotor module, the radial vibration module comprises a stator core shaft, rupture disk assemblies and a rotor assembly, the stator core shaft is of a hollow cylindrical structure with the two ends open, and the rupture disk assemblies are arranged in an inner cavity of the stator core shaft at intervals; the rotor assembly is arranged on the outer wall of the stator core shaft in a sleeving mode, and the stator core shaft is provided with a plurality of flow channels which are in fluid conduction connection with the rotor assembly. The rotary drum is arranged on the outer wall of the stator core shaft in a sleeving mode and located outside the rotor assembly, and the eccentric guide shoe is assembled on the rotary drum and located at the downstream end of the stator core shaft; the axial vibration module comprises an eccentric block, the eccentric block is arranged in the eccentric guide shoe, and an eccentric hole is formed in the eccentric guide shoe. The device can effectively improve the well cementation operation efficiency and quality, and is suitable for well cementation construction under various complex working conditions.

The invention relates to the technical field of optical fiber distribution boxes, and discloses a fusion-free redundancy-free optical fiber distribution box and a use method thereof.The fusion-free redundancy-free optical fiber distribution box is characterized in that an optical fiber connector is inserted and assembled in an optical fiber adapter, and a wire guide for winding the optical fiber connector is arranged in the distribution box; the optical fiber connector is provided with a locking device which enables the optical fiber connector to be self-locked in the optical fiber adapter, the disassembly operation of the optical fiber connector is simple and convenient, the limitation in the clamping groove is relieved through external force, the smoothness of the disassembly process is ensured, the locking device is arranged on the optical fiber connector, the self-locking mechanism and the disassembly mode thereof are improved, and the disassembly efficiency is improved. The stability and the tension resistance between the optical fiber connector and the optical fiber adapter are enhanced through the locking device, the problem that in the prior art, due to the fact that a locking protrusion and a locking groove are not tightly matched or clamping stagnation is not stable, the optical fiber connector falls off is effectively solved, the fixing stability of the optical fiber connector can be improved, and good tension resistance and impact resistance are achieved.

This invention proposes a wheat seed selection device, including a frame. Inside the frame, from top to bottom, are inclined and adjustable primary and secondary screens. This invention features a reasonable design and convenient operation. By setting multiple inclined adsorption plates between the primary and secondary screens, it can adsorb metallic impurities mixed in with the wheat seeds. Because there are multiple adsorption plates, falling seeds first land on them, adsorbing metallic impurities without accumulation. Furthermore, it allows workers to easily remove the adsorbed metallic impurities from the drain outlet, achieving rapid cleaning. In addition, the pull-out primary and secondary screens facilitate maintenance and replacement, improving disassembly and assembly efficiency, and also allow for easy screen angle adjustment to meet screening needs under different working conditions, thus expanding its applicability.