8results about How to "Avoid compression set" patented technology

The utility model provides a compressible battery pack heat management heat insulation structure which comprises a battery pack shell, a storage battery management system BMS and battery modules, the two battery modules are arranged in the battery pack shell, and the storage battery management system BMS is electrically connected with the battery modules; each battery module comprises battery cells, compression heat insulation plates, fixed end plates, battery cell connecting aluminum palladium and bandages, the multiple battery cells are arranged side by side, the compression heat insulation plates are arranged between the adjacent battery cells, the fixed end plates are arranged on the outer sides of the battery cells arranged at the two ends, and positive electrodes at one ends of the battery cells are connected with negative electrodes at one ends of the adjacent battery cells on the same side through the battery cell connecting aluminum palladium; the positive electrodes of the battery cells at the two ends of one battery module are connected with the negative electrodes of the battery cells at the two ends of the other battery module through the battery cell connecting aluminum palladium; and the bandage sleeves are clamped on the outer sides of the fixed end plates at the two ends of the battery module. According to the battery module, compression isolation is carried out through the compression heat insulation plates between the battery cells, fixed isolation is carried out through the fixed end plates at the two ends of the battery module, and binding is carried out in cooperation with the binding bands. The compressible capacity except for the heat insulation function of the compression heat insulation plate is used for bearing the functions of extrusion and deformation recovery so as to fix the module binding band, and the cost is reduced.

The present invention relates to the field of punching dies, and specifically to an automatic punching die for aluminum ladder steps, which comprises a first core rod and a second core rod that can be connected and separated, wherein the first core rod can be slidably connected to a die frame, and comprises a first support portion for supporting the inner wall of a circular tube of the ladder step, a first connection portion arranged at the end, and an operating portion that can be extended and retracted along an axis. The second core rod is detachably connected to the first core rod, and comprises a movable portion, a second support portion and a second connection portion that are evenly distributed around the movable portion, and the second support portion can move radially to achieve radial expansion. The first connection portion and the second connection portion are connected by magnetic adsorption or vacuum adsorption, and the operating portion can extend out of the connected movable portion and drive it to move axially. In the embodiment of the present invention, the first core rod and the second core rod respectively support the inner walls of the circular tube on both sides of the movable die hole, thereby preventing the inward compression deformation of the circular tube caused by the punching force and ensuring the shape accuracy of the ladder step.

The invention relates to a multi-channel degradable hard microneedle shell and a preparation method thereof, and belongs to the technical field of medical sanitary materials. The hard-dissolving microneedle shell has good physical properties, is hard in texture, biodegradable and good in molecular permeability, and the independent multi-channel microneedle can be used for loading living cells and supporting in-situ exchange of nutrient substances, so that subcutaneous delivery and in-situ regeneration of the living cells are realized. The preparation method comprises the steps of preparing a groove mold and a sleeve cover, filling PLGA solid blocks, heating the PLGA solid blocks to melt the PLGA solid blocks, performing vacuum-pumping treatment, performing pressurization treatment, performing freeze-thaw circulation, and performing demolding at room temperature. The invention has the beneficial effects of good physical properties, hard texture, biodegradability and good molecular permeability, and the independent multi-channel microneedle can be used for loading living cells, supports in-situ exchange of nutrient substances, and realizes subcutaneous delivery and in-situ regeneration of living cells.

The utility model discloses a kind of fixed devices of anti-settling type engineering survey control point marker stone burying, it is related to landmark fixing device technical field, to solve the current marker stone fixing device vertical force, easy to cause the technical problem of settlement, including marker stone, side shell and bottom frame, the bottom frame middle part is inserted and is equipped with assembly box, and arc pressure piece of arch bridge shape is equipped in assembly box lower side opening, the bottom of the marker stone is equipped with the inserted end inserted into assembly box, the side shell is slidably inserted in the both sides opening portion of bottom frame, the side shell is made of vertical plate and inclined plate, and the included angle is formed into clamping opening, transverse side flow opening is set up on the inclined plate of side shell, and the inside of vertical plate of side shell is symmetrically distributed with pressure block. The utility model has the advantages of arch bridge shape bearing bottom surface, dispersing stress improves the advantage of anti-settling effect.

The utility model discloses a damping support of a concrete vibration table. The damping support comprises a base; the supports are fixedly arranged at four corners of the top end of the base; the damping spring is fixedly arranged at the bottom end of the inner cavity of the first support; the bottom end of an inner cavity of the second support is fixedly connected with the bottom end of an inner cavity of the damping spring; the vibrating plate is fixedly arranged at the top end of the second support; the vibrating table is fixedly arranged at the top end of the vibrating plate; the vibration motor is arranged at the bottom end of the vibration plate; the amplitude limiting mechanism is arranged between the base and the vibrating plate; and the weight limiting assembly is arranged on the inner side of the base. According to the shock absorption support of the concrete vibration table, the amplitude limiting mechanism is arranged to adjust the height of the first shock absorption pad and the height of the second shock absorption pad, so that the vibration plate is limited during vibration, the amplitude of the vibration plate is controlled, different vibration effects are achieved, and energy consumption of the vibration table is reduced.

This utility model provides a liquid hydrogen atmospheric pressure storage tank, comprising: an inner tank for storing liquid hydrogen; an intermediate tank disposed outside the inner tank; a first gap between the inner wall of the intermediate tank and the outer wall of the inner tank forming a first cold-insulating space; the first cold-insulating space being filled with a first heat-insulating material; an outer tank disposed outside the intermediate tank; a second gap between the inner wall of the outer tank and the outer wall of the intermediate tank forming a second cold-insulating space; the second cold-insulating space being filled with a second heat-insulating material; a first gas filling pipe connected to the first cold-insulating space, continuously supplying a first heat-insulating gas into the first cold-insulating space to make the pressure in the first cold-insulating space greater than the pressure in the second cold-insulating space; and a second gas filling pipe connected to the second cold-insulating space, continuously supplying a second heat-insulating gas into the second cold-insulating space to create a slight positive pressure in the second cold-insulating space relative to the external environment outside the outer tank. The liquid hydrogen atmospheric pressure storage tank of this application has a short manufacturing cycle and is suitable for storing large volumes of liquid hydrogen.

The utility model belongs to building technical field especially a double -deck steel frame floating construction vibration isolation and noise reduction equipment, to the single elastic layer damping performance of current floating construction and the problem that floating construction needs to measure and secondary cutting material, present the following scheme, including the protective fence, fixedly connected in the floor top, four baffle, along the protective fence inboard circumference fixedly connected, two ends of four baffle all are equipped with T type guide rail and T type slot matched with T type guide rail, in the utility model, through the cross type rubber block high damping of sound insulation cotton block pressure absorption low -frequency vibration energy, simultaneously by rubber pad and the multiple sandwich of polyurethane layer constitute the circular hole of polyurethane layer surface and set up and excite sound wave vortex effect dissipation high -frequency energy, thereby, solve the broadband vibration isolation failure problem of traditional elastic layer damping single -faced and the baffle prefabricated T type interface complete quick insertion, internally lay sound insulation cotton block and fill sealant and reduce construction difficulty.

The application discloses a method for preventing compression deformation of high-thickness large-curvature pre-impregnated honeycomb preforming, which comprises the following steps: according to the thickness of the pre-impregnated honeycomb to be preformed and the specification of the honeycomb core, a rubber support is designed and prepared, and the rubber support is filled into the honeycomb core at the position where the pre-impregnated honeycomb has large curvature and is prone to compression deformation; then, the pre-impregnated honeycomb filled with the rubber support is laid on a large-curvature preforming tool, and after being packaged, vacuumized and pre-pressed, the pre-impregnated honeycomb is sent into a hot pressing tank for curing and forming, and a large-curvature honeycomb preformed body with good quality can be obtained after demolding. The method is very simple in operation process, the rubber support material can be repeatedly used after being prepared, and can be applied to the preforming of other complex curved surface pre-impregnated honeycomb, has wide application range, and has very good practical value and popularization value.