18results about How to "Reduce bulge" patented technology

The invention relates to the field of power batteries, and discloses a high-temperature-resistant lithium iron phosphate power battery and a preparation process thereof. The high-temperature-resistant lithium iron phosphate power battery comprises a positive plate, a diaphragm, a negative plate, electrolyte and a shell, wherein the positive plate comprises a positive current collector and a coated positive material; the negative plate is composed of a negative current collector and a coated negative material; the positive electrode material is prepared from carbon-coated lithium iron phosphate, a conductive agent and a binder according to a weight ratio of 100: (4-6): (50-60), and the negative electrode material is prepared from artificial graphite, a conductive agent and a binder according to a weight ratio of 100: (2-4): (60-70); the binder is prepared from the following raw materials in percentage by weight: 20-30% of carboxylated styrene-butadiene emulsion, 10-15% of polytetrafluoroethylene emulsion, 10-12% of dispersing agent, 2-4% of hydroxyethyl cellulose and the balance of water. And the prepared lithium iron phosphate power battery has good high-temperature-resistant stability and cycle period, and the problem of swelling is not easy to occur.

The present application relates to the technical field of rubber, in particular to a kind of giant engineering machinery tire anti-split body rubber composition and preparation method thereof. With 100 parts by weight of natural rubber component as benchmark, further comprising the following components: natural rubber 100 parts, carbon black 40-50 parts, zinc oxide 6-8 parts, cobalt salt 0.2-0.4 parts, antioxidant 2246 0.5-1 part, antioxidant S-TMQ 0.2-1.0 parts, N,N'-4,4'-diphenyl methane bismaleimide 0.5-1.5 parts, insoluble sulfur 8-12 parts, accelerator 0.3-0.7 parts, anti-scorching agent 0.05-0.15 parts. The present application solves the shortcomings of lower adhesive property of body rubber and insufficient anti-splitting ability of existing technology under harsh road conditions and hot and humid, steam, salt water environment, greatly reduces the occurrence probability of body delamination and bead bulging under hot and humid environment in Southeast Asia, improves the anti-splitting ability of body rubber, and ensures the service life of giant tire under high load operation.

The utility model belongs to the technical field of liquid cooling plates, and particularly relates to an arch bridge type reinforced wide-flow-channel fin liquid cooling plate, which comprises a liquid cooling plate, a lower substrate is welded at the top of the liquid cooling plate, an upper substrate is welded at the bottom of the liquid cooling plate, and a flow channel cavity is reserved in a whole formed by the liquid cooling plate, the lower substrate and the upper substrate. The transverse beams and the vertical beams which are arranged in a staggered mode are arranged to support the lower base plate and the upper base plate, so that the interior of the runner cavity is reinforced, the overall structural strength is improved, the battery bulging phenomenon is reduced, the arc-shaped grooves are formed, cooling liquid can normally circulate when flowing through the transverse beams through the arc-shaped grooves, and the cooling effect is improved. According to the liquid cooling device, the cooling liquid can be guided to flow, the cooling liquid can be buffered and kept stable by forming the first transition round corner, air bubbles are prevented from being generated when the cooling liquid flows out by forming the second transition round corner, noise generated during liquid cooling is further reduced, and material corrosion is reduced.

The invention relates to an incremental launching construction method for a box culvert overcrossing a subway. The incremental launching construction method comprises the following steps that S101, a supporting system is constructed, specifically, the supporting system is constructed in front of the box culvert and above an existing subway; in the pushing direction, a sliding plate is arranged at the bottom end of the initial position of the box culvert, and the box culvert slides on the sliding plate; the soil body in front of the box culvert and above the existing subway is subjected to multiple times of grouting reinforcement; and S103, box culvert pushing construction is conducted, specifically, a counterweight assembly is installed at the top end of the box culvert, and the installation position of the counterweight assembly on the box culvert is adjusted along with pushing of the box culvert. According to the incremental launching construction method, the jacking direction of the box culvert can be limited through the high-pressure jet grouting piles and the supporting piles, and the box culvert is prevented from deviating in the incremental launching process; and deep hole grouting reinforcement is carried out on soil bodies at the bottom ends of the multiple high-pressure jet grouting piles and the multiple supporting piles, and dense grouting reinforcement is carried out on weak stress positions of the soil bodies, so that the high-pressure jet grouting piles, the supporting piles and a grouting reinforcement area form a U-shaped structure reinforcement system.

This invention provides an extruder for wires with smooth and uniform heating, comprising a body, a die head, a neck, a barrel, a heater, a conduit, and a pump. The body encloses the barrel, which contains a screw. The body includes a heating zone and an extrusion zone. The heater is connected to the heating zone via a conduit. The die head is connected to the extrusion zone via the neck. The heating zone has a feed inlet, and the die head has a discharge outlet. Silicone oil is introduced into the heater, and the heated silicone oil is pumped into the heating zone. Existing silicone oil in the heater is pumped back to the heater, thus achieving constant temperature heating. The temperature fluctuation within the barrel is within 1°C, resulting in more uniform material heating, more stable plasticization, and a more stable material flow. This reduces common problems such as old rubber and bulging, leading to higher precision products with better electrical performance and appearance, offering significant advantages in the production of high-frequency data cables.

The utility model discloses a kind of geothermal-resistant impregnated paper laminated solid wood composite floor, including strip-shaped floor body, including by upper to lower sequentially arranged impregnated film paper, high-density fiberboard, plywood and single bottom plate, the plywood includes by upper to lower sequentially arranged multilayer wood board, and the topmost layer wood board in multilayer the wood board is first layer wood board, the conduit of the first layer wood board is distributed along the length direction of wood floor, and the pipe hole of the conduit of the first layer wood board is towards the broad side of the floor body.The pipe hole of conduit is towards the broad side of the floor body, when air moisture content is higher, the area of pipe hole exposed in first layer wood board can be reduced, plywood water absorption is reduced, thereby controlling wood floor water absorption when air humidity is larger, reduce the bulging phenomenon of wood floor.

The utility model discloses a novel impregnated paper layer solid wood composite floor which comprises a floor body, the floor body comprises a wear-resistant layer, an impregnated paper layer, a buffer layer, a base material layer and a balance layer which are distributed from top to bottom and laminated and attached, the base material layer comprises a plurality of base plates which are mutually attached, the number of the base plates is seven, and among the seven base plates from top to bottom, the number of the base plates is larger than the number of the base plates. The texture directions of the floor body are longitudinal, transverse, longitudinal, transverse, longitudinal, transverse and longitudinal in sequence, lock catch structures are arranged on the peripheral sides of the floor body, and waterproof layers are arranged on the peripheral side vertical faces of the floor body. The waterproof layers are arranged on the four side vertical faces of the floor body, the sealing edges of the floor body are wrapped, water seepage at the abutted seams of the floor can be avoided, moisture absorption of the floor is blocked, and the waterproof performance of the floor is greatly improved.

This utility model discloses an interlocking block slope protection for a plain reservoir dam, comprising several evenly arranged slope protection blocks. Each slope protection block has multiple elongated openings along its transverse direction on its front side, extending longitudinally through the block. Multiple longitudinal drainage pipes are installed within each slope protection block, with both ends of each pipe connected to the outside. Furthermore, the drainage pipes are arranged in a matrix along the longitudinal direction. Even further, a connecting pipe is provided between two adjacent drainage pipes in the transverse direction. Furthermore, a rubber pad layer is provided on the outer surface of each slope protection block. Even further, the surface of the rubber pad layer has several raised points. This utility model, by installing multiple drainage pipes inside the slope protection block and providing a rubber anti-slip layer on the outer side, enables the slope protection block to drain rainwater quickly and efficiently without losing stability under temperature changes.

The invention discloses a steel bridge deck pavement structure suitable for heavy traffic and a pavement method thereof, and belongs to the field of steel bridge deck pavement. Comprising an anti-corrosion layer, a high-performance stress dispersion layer, a waterproof bonding stress absorption layer and a modified asphalt concrete wearing layer which are sequentially laid on the upper surface of a steel bridge deck slab. Therefore, the comprehensive performance of impact resistance, deformation resistance, aging resistance and the like of the whole pavement structure reaches a relatively high level. By arranging the high-performance stress dispersion layer, the pressure of vehicle loads on the steel bridge deck is dispersed, local stress concentration caused by the wheel load effect is greatly reduced, and the fatigue cracking problem of the orthotropic bridge deck is relieved; by arranging the waterproof bonding stress absorption layer, the interface bonding strength and shear strength between the high-performance stress dispersion layer and the modified asphalt concrete wearing layer are enhanced, lower cracks can be prevented from being reflected to the modified asphalt concrete wearing layer, and the service life of the steel bridge under heavy traffic is prolonged.

The present application relates to a kind of shoe material accessories tape coating machine, including feeding station, coating station, blanking station and transfer mechanism, coating station includes workbench, auxiliary edge covering mechanism, main edge covering mechanism, auxiliary edge covering mechanism is located at the both ends of workbench position, main edge covering mechanism includes positioning plate and coating plate, positioning plate and coating plate are slidably connected, positioning plate and workbench are slidably connected, positioning plate and coating plate are respectively connected with corresponding cylinder, the face of positioning plate and coating plate towards inside is equipped with the arc surface groove consistent with the shape of accessory body;The auxiliary edge covering mechanism includes flange and the third cylinder of driving flange swing;Vacuum hole is distributed on the workbench. Through the positioning of accessory body and adhesive tape of feeding station and the coating operation of coating station to the accessory to be coated, it is efficient, the yield is high, greatly reduces the occurrence of adhesive tape fold or bulge in coating process, and the soft adhesive tape is evenly folded into tail.

A flatness-controllable heating workbench relates to the technical field of heating tables and comprises a heating plate, a heat insulation plate, a heat insulation back plate, a connecting plate, a heating pipe, a plurality of first connecting pieces and a plurality of second connecting pieces. A plurality of heating pipes are arranged in the heating plate; the first connecting piece penetrates through the heat insulation plate and the heat insulation back plate, and the heat insulation plate and the heat insulation back plate are fixedly connected to form a heat insulation plate assembly; a plurality of first connecting pieces are arranged at the peripheral position and the middle position of the heat insulation plate assembly; the second connecting piece sequentially penetrates through the heating plate, the heat insulation plate assembly and the connecting plate and fixedly connects the heating plate, the heat insulation plate assembly and the connecting plate to form a workbench. Wherein the heating plate is connected with the heat insulation plate; a plurality of second connecting pieces are arranged on the periphery of the workbench, and the first connecting pieces and the second connecting pieces do not coincide in position. According to the flatness-controllable heating workbench, the technical problem that in the prior art, the flatness of the working face of a heating table is poor is solved to a certain extent.

The utility model provides a support changing plate strip connecting structure of a Larsen steel sheet pile enclosure and a foundation slab, a support changing plate strip is arranged on a foundation cushion layer, is arranged close to the Larsen steel sheet pile enclosure, and is used for connecting the Larsen steel sheet pile enclosure and the outer side of an outer wall of the foundation slab. The isolation material is arranged between the support replacing plate strip and the Larsen steel sheet pile enclosure, the waterproof material is continuously laid on the foundation bed and the support replacing plate strip, and the waterproof material is bent upwards when the foundation bed is transited to the upper surface of the support replacing plate strip so as to conduct waterproof sealing on the connecting position of the foundation bottom plate and the support replacing plate strip. According to the utility model, the waterproof material is prevented from being broken at the elevation position of the support changing plate belt, the bending and swelling of the waterproof material can be reduced, the waterproof quality of a basement foundation slab and an outer wall is ensured, the waste of the waterproof material is reduced, meanwhile, the requirement of horizontal force transmission of a peripheral temporary maintenance structure can be met, and the deformation of an enclosure structure is effectively controlled.

The invention relates to a key (10) for producing a rotationally fixed connection between two annular components (2, 3). The key (10) has: a longitudinal extension direction (L); a first engagement section (11) for engaging with the first annular component (2); and a second engagement section (12) for engaging with a second annular component (3). The first engagement section (11) has a flat contact surface (13.1; 13.2) for engaging with the first annular component (2); the second engagement section (12) has a curved contact surface (14) for engaging with the second annular component (3). The invention further relates to an assembly (1) for torque transmission, comprising two ring-shaped components (2, 3) and such a key (10).

The invention relates to a preparation method of an expanded graphite bipolar plate. The preparation method comprises the following steps: (1) crushing expanded graphite into graphite powder; (2) mixing and stirring graphite powder, modified asphalt and resin; (3) performing surface carbonization treatment on the mixture; (4) carrying out a coating process on the carbonized mixture by using an adhesive, so that the carbonized mixture is uniformly sprayed on an aluminum foil, and carrying out Z-shaped folding and compaction on the sprayed aluminum foil to obtain the bipolar plate; the expanded graphite bipolar plate prepared by the invention has good air tightness, thermal stability, wear resistance and conductivity.

The present invention discloses an imaging system, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power, whose image side is convex; a second lens with a negative optical power, whose image side is concave; a third lens with a positive optical power; wherein, the distance TS3 from the aperture stop of the imaging system to the image side of the third lens on the optical axis and the distance TTL from the object side of the first lens of the imaging system to the imaging surface on the optical axis satisfy: 0.2 < TS3 / TTL < 0.3. By controlling the axial distance from the object side of the first lens to the imaging surface and the distance from the aperture stop of the imaging system to the image side of the third lens on the optical axis, the ultra-thin characteristic of the lens is ensured, the miniaturization of the lens is realized, the space utilization rate of the whole machine is improved, the lens protrusion phenomenon is reduced, and the aesthetics of the whole machine is ensured.

The invention provides electronic equipment. The electronic equipment comprises a front shell assembly, a rear shell assembly covering the front shell assembly, and a functional assembly arranged between the front shell assembly and the rear shell assembly. The functional assembly comprises a fixing frame with a reference surface, and a main board and a battery which are arranged on the fixing frame, and the orthographic projection of the main board on the reference surface is located outside the coverage range of the orthographic projection of the battery on the reference surface; wherein the projection directions of the mainboard and the battery are perpendicular to the reference plane and are parallel to the direction, close to or away from the rear shell assembly, of the front shell assembly, and the two opposite sides, in the projection direction, of the mainboard are further connected with the front shell assembly and the rear shell assembly correspondingly so as to transmit heat to the front shell assembly and the rear shell assembly correspondingly. Through the arrangement, the mainboard can directly utilize the front shell assembly and the rear shell assembly for heat dissipation, so that the battery is arranged outside a main heat dissipation path of the mainboard, and the influence of mainboard heating on the battery is reduced.

The utility model provides a kind of cutting structure of sewing machine belongs to sewing machine technical field.It solves the problem of low reliability of cutting structure in the cutting process of existing cutting structure.The cutting structure of this sewing machine, including base and the presser foot of being set in the upper of base, the rear end of base is equipped with the fixed knife platform located in the rear of presser foot, the movable knife bar of being able to swing up and down is rotatably connected on base, one end of movable knife bar is connected with movable knife that can be close to fixed knife platform, the rear end of presser foot is fixedly connected with the presser foot rear guard plate of being L-shaped, the lower surface of presser foot rear guard plate is close to base setting, and there is gap between lower surface and base, and the lower end of presser foot rear guard plate is close to fixed knife platform setting.The cutting structure of this sewing machine makes the fabric after sewing between existing presser foot and fixed knife platform can pass through the lower pressure limit of newly added presser foot rear guard plate, reduce the bulging of fabric, and then improve the reliability of cutting.

The present invention provides a multi-chip stacking packaging structure and a manufacturing method thereof, wherein a plurality of packaging units are stacked on a substrate in sequence along the longitudinal direction, and a plastic encapsulation layer II covers all the packaging units; the packaging unit includes a plastic encapsulation layer I, a memory chip and an interposer chip, the memory chip and the interposer chip are interconnected through a rewiring layer, and the packaging units are electrically connected through connection bumps. The present invention combines fan-out packaging technology with TSV technology, and does not require each packaging unit to include a substrate, thereby realizing a lightweight packaging structure, and the signal is vertically transmitted through the interposer chip, and it is not necessary to process TSV on the memory chip; the present invention also increases the number of connection points of the memory chip through the rewiring layer, so that the interconnection between the packaging units is easier and faster to achieve; and the present invention improves the structure of NCF, with the first film layer with low fluidity playing a supporting role to reduce the overflow of the adhesive film, and the second film layer with high fluidity is melted first, so that the connection bumps are easier to pass through and the cold solder joints are reduced.