14results about How to "High structural precision" patented technology

The utility model relates to the technical field of building construction, and particularly discloses a steel-reinforced concrete joint restraining device. The steel-reinforced concrete joint restraining device comprises joint steel plate hoops, the joint steel plate hoops are parallel to the transverse steel members, the joint steel plate hoops are welded between the transverse steel members at the same section steel member joint, and the welded joint steel plate hoops form a hoop-shaped structure. The node steel plate hoop is made of a strip-shaped steel plate, and the node steel plate hoop and the profile steel component are machined together in a factory. According to the utility model, the defects of difficulty in mounting the constraint steel bars, large field manufacturing and welding workload and substandard protection layer caused by node steel bar deviation in the traditional steel reinforced concrete construction are effectively overcome.

The application discloses a battery pack and a vehicle, and belongs to the technical field of vehicle batteries. The battery pack comprises a support structure and a battery module. The support structure comprises a first support and a second support. The first support is arranged on a bottom plate of a battery box body, and the first support has a first accommodating space. The second support is arranged on a side of the first support away from the bottom plate of the battery box body, and the second support has a second accommodating space. A positioning block is arranged on a side of the first support facing the second support, and the second support is provided with an additional beam. The additional beam is connected with the positioning block. The battery module comprises a first module and a second module. The first module is arranged in the first accommodating space, and the second module is arranged in the second accommodating space. The combined mounting mode of the layer-by-layer arranged support structure and the battery module significantly improves the space utilization rate of the battery pack, and effectively improves the volume energy density of the whole battery system.

This utility model relates to the field of road surface maintenance technology in municipal engineering, and more particularly to a leveling device for road surface maintenance in municipal engineering. It solves the problem in existing technologies where the height adjustment mechanism lacks a locking device, leading to loosening of the adjustment components and loss of height control due to vibration during operation. The leveling device for road surface maintenance in municipal engineering includes two mounting frames and a mounting plate positioned between the two frames. Both sides of the bottom of each mounting frame are equipped with casters, and each mounting frame contains a lifting rod. The two ends of the lifting rod are connected to the interior of the mounting frame via a vertical guide structure, and the top of the lifting rod is connected to the top of the mounting frame via a vertical adjustment structure. This utility model, through the cooperation of the lifting rod and the detachable locking structure, achieves rigid fixation after adjustment, effectively preventing height changes caused by operational vibration and improving the stability and accuracy of the leveling operation.

The utility model discloses a kind of pearl film cutting device convenient to cutter replacement, belong to pearl film production technical field, including base, the both sides of base top are uniformly fixedly connected with side plate, the bottom of first slider is movably connected with support plate, the middle part of support plate bottom surface is fixedly connected with shell, block is connected with guide rod and penetrates, the inside of guide rod is fixedly connected with inclined block, fixed rod is set in shell, the top of fixed rod is fixedly connected with fixed flat top cone, movable flat top cone is movably connected on the outer wall of fixed rod, the bottom of fixed rod is fixedly connected with tool. The pearl film cutting device convenient to cutter replacement, through the synergistic effect of fixed flat top cone, inclined block, guide rod and first spring, realize tool quick disassembly, without multiple bolt fixed, when replacing, draw out fixed peg, lift tool can drive inclined block to move out and separate engagement, remove tool, simplify procedure, reduce labor intensity, improve maintenance efficiency.

This utility model discloses a trimming and cutting device for particleboard production, including a U-shaped bottom hollow frame, sponge rollers rotatably mounted at the front and rear positions inside the U-shaped bottom hollow frame via bearing seats, a drive shaft rotatably mounted on one inner wall of the U-shaped bottom hollow frame, and an external spline shaft rotatably mounted on the inner wall of the U-shaped bottom hollow frame below the drive shaft. A left cutting disc is fixed to one end of the external spline shaft near the inner wall of the U-shaped bottom hollow frame. A three-gear speed-increasing transmission structure is installed between the drive shaft and the external spline shaft. This utility model controls the positions of the L-shaped shaft carrier, T-shaped hollow bushing, internal spline shaft, and right cutting disc via a control panel and an X-axis lead screw electric module. After adjustment, the motor transmits power to the external spline shaft and internal spline shaft, causing the left and right cutting discs to rotate synchronously. The operator manually pushes the particleboard until the left and right cutting discs synchronously trim the edges of the particleboard.

This invention belongs to the field of injection mold technology and discloses a full-circumferential undercut mold and its demolding method. The full-circumferential undercut mold includes a stationary mold part and a moving mold part. The stationary mold part includes a stationary mold backing plate, an A plate, and at least one set of stationary shrinkage mold assemblies. The stationary shrinkage mold assembly includes a stationary mold shrink core and at least two stationary mold shrink flaps. The stationary mold backing plate first drives the stationary mold shrink core to move, so that the stationary mold shrink flaps are disengaged from the inner ring groove of the product. Then, the stationary mold backing plate and the A plate move simultaneously to allow the stationary mold shrink flaps to be ejected from the product. The moving mold part includes a moving mold fixing plate, an ejector assembly, a moving mold backing plate, a B plate, and at least one set of moving shrinkage mold assemblies. The moving shrinkage mold assembly includes a moving mold shrink core and at least two moving mold shrink flaps. The ejector assembly pushes the B plate to move, and the B plate drives the moving mold shrink flaps to disengage from the moving mold shrink core, so that the product is disengaged from the moving mold shrink flaps. After the product is disengaged from the moving mold shrink flaps, the ejector assembly continues to move upward to eject the product. This invention achieves product ejection through the inward shrinkage and disengagement of the stationary mold part and the inward shrinkage and disengagement of the moving mold part.

A kind of quick fixture for welding, including base plate, the base plate is provided with placing rack, for placing cross workpiece body, the front end of the placing rack is provided with baffle, the inside of the placing rack is provided with limiting slot with spring, the limiting slot is provided with clamping plate, the front and rear sides of the placing rack are provided with sliding slot, the sliding slot is provided with support frame, support frame is provided with chuck, for the center part of cross workpiece body is clamped, the base plate is provided with block, for the cross extension of cross workpiece body is supported, the block is provided with rotary down pressure cylinder, the rotary down pressure cylinder has chuck, for the cross extension of cross workpiece body is clamped;Through the coordinated action of linear cylinder, rotary cylinder and rotary down pressure cylinder, replace the mode of traditional artificial quick clamping one by one operation, greatly reduce the complexity of operation, in large quantities, improve work efficiency.

The utility model discloses a dental instrument which comprises a shell-shaped body and a palate bar used for being connected to a rear tooth area of a patient in a matched mode, the palate bar comprises two retention connected crowns used for being connected with teeth in the rear tooth area on the left side and the right side in a matched mode and a plurality of palate connecting rods connected between the two retention connected crowns, the inner contours of the retention linked crowns on the left side and the right side are matched with the outer contours of the teeth at the corresponding positions of the patient; teeth in the rear tooth area are matched and connected with the retention connected crown to form a composite module; the shell-shaped body comprises a first section and a second section for accommodating the composite module, the first section is used for accommodating other teeth except the teeth matched and connected with the composite module, and the inner contour shape of an accommodating cavity of the second section is consistent with the outer contour shape of the composite module; a retention accessory is arranged on the cheek side and / or the tongue side of the retention linked crown, and a matching part matched with the retention accessory is arranged at the position, corresponding to the retention accessory, of the second section.

The invention discloses a high-Q-value and high-selectivity band-pass filter based on an LTCC (Low Temperature Co-Fired Ceramic) dielectric integrated suspension line. According to the filter, a low-temperature co-fired ceramic process is combined with a dielectric integrated suspended line structure, and the dielectric and conductor loss is remarkably reduced and the quality factor is improved by constructing an air cavity in a multi-layer dielectric and adopting a resonator design with symmetrical upper and lower layers. Meanwhile, the U-shaped metal conductor transmission line is used for introducing cross coupling, transmission zero points are generated on the two sides of a passband, and therefore the filtering performance of high selectivity, low insertion loss, miniaturization and high reliability is achieved.

The invention belongs to the field of flying pavilion construction, and particularly relates to a finalization archaized flying pavilion modeling construction device and method.The finalization archaized flying pavilion modeling construction device comprises a plurality of flying pavilion units, the flying pavilion units are sequentially arranged on a main body supporting column, and the device comprises four positioning units, a limiting device, a locking device and a supporting device; the four positioning units are arranged at the four corners of the main body supporting column respectively, the limiting devices are arranged on the side portions of the positioning units, the relative positions of the adjacent positioning units are adjusted through sliding of the limiting devices, the two locking devices are parallel to each other, and the limiting devices are arranged on the side portions of the positioning units. The two ends of the supporting device are connected with the different positioning units respectively, and the supporting device is movably connected to the lower portions of the positioning units and arranged on the lower portions of the flying pavilion units in a supporting mode. Prefabricating of the whole unit and on-site foundation construction can be conducted synchronously, mounting of the flying pavilion body can be completed only through one-two times of hoisting on site, and the construction period is shortened by 40%-60% compared with distributed construction.

This invention belongs to the field of flame retardant technology, and provides a reactive phosphorus-containing flame retardant, a resin composition, its preparation method, and its application. The preparation method includes: (1) dissolving DOPO-Cl and DPO-Cl in a first reaction solvent to obtain a premix; (2) sequentially transferring 2-butynedi-1,4-diol, a base-binding acid, and a second reaction solvent to a constant pressure dropping funnel to obtain a mixed solution, adding the mixed solution dropwise into the premix and reacting to obtain a reaction solution; (3) adding a quenching agent to the reaction solution and extracting, washing the organic layer, drying, filtering, concentrating, and separating the crude product to obtain the final product. This flame retardant has high and long-lasting flame retardant efficiency, and also possesses excellent dielectric properties, compatibility, and heat resistance. The preparation method has mild synthesis conditions, low cost, and is easy to implement. The resin composition prepared from this flame retardant has the application prospect of preparing copper-clad laminates.

The invention relates to the technical field of high polymer material processing and plastic molding, and discloses an extrusion blow molding and injection molding composite molding process of a food packaging plastic bottle. According to the technology, a pre-oriented tubular parison is formed through extrusion, a bottle body with the uniform wall thickness is obtained through one-time inflation shaping, then a high-precision threaded bottle opening is directly formed in a closed mold in an injection molding mode, secondary inflation finishing is supplemented for compensating local shrinkage, finally cooling demolding is conducted, and the size and the sealing performance are detected on line. The whole process is integrally completed in a clean environment, and intermediate transfer is not needed. The process remarkably improves the structural precision, the sealing reliability and the surface smoothness of the bottle body, enhances the compression resistance and the falling resistance, improves the production efficiency and the material utilization rate, and ensures that a finished product meets the food contact safety standard.

The invention relates to a cutting method of a display substrate, a display panel and display equipment. The cutting method of the display substrate comprises the following steps that the display substrate is obtained, the display substrate comprises a glass substrate and at least one display unit, and the glass substrate is provided with a first surface and a second surface which are opposite to each other; preparing an acid-resistant layer on one side, far away from the glass substrate, of the display unit to form a first structure; preparing an etching back plate on one side, far away from the display unit, of the acid-resistant layer to form a second structure; performing laser modification on a preset area of the second surface of the second structure to form a third structure; and performing acid etching on the third structure, and stripping the preset area of the glass substrate. According to the cutting method, the preset area of the glass substrate is subjected to laser modification, so that the modified area has a relatively high etching ratio, under acid etching, the preset area is more easily etched and finally cut off, and finally the display panel with display performance, high structural precision and high mechanical strength can be obtained.

This invention provides an online adjustment method and system for hammering force during additive composite manufacturing, relating to the field of metal material additive manufacturing technology. The method includes: acquiring process parameters for the current layer and initiating deposition; during deposition, acquiring and preprocessing the temperature data of the current deposited layer in real time to obtain the average temperature of the target hammering area in the current deposited layer; after deposition, acquiring point cloud data and extracting the height of the target hammering area; acquiring the material yield strength at the average temperature, calculating the hammering force and hammering voltage required for the initial hammering; performing the initial hammering based on the hammering voltage, acquiring the point cloud data after hammering, and extracting the height after hammering; then calculating the actual height deformation to evaluate the current hammering effect, and then correcting or ending the current deposited layer based on the evaluation results; repeating the above operations until all deposited layers are processed. This invention provides an efficient and reliable auxiliary additive manufacturing hammering forming control scheme.