16results about How to "Improve torsional performance" patented technology

The invention discloses a compression-resistant and torsion-resistant energy storage cable and a preparation method thereof, and relates to the technical field of energy storage cables. The compression-resistant and torsion-resistant energy storage cable sequentially comprises a cable core, an insulating layer, a lubricating shielding layer and a compression-resistant outer protective layer from inside to outside, wherein the compression-resistant outer protective layer at least comprises the following raw materials in parts by mass: 70-90 parts of high-density polyethylene; 10 to 20 parts of low density polyethylene; 20 to 30 parts of elastic particles; 30 to 40 parts of an ethylene-vinyl acetate copolymer; 30 to 40 parts of a flame retardant; 5 to 10 parts of maleic anhydride grafted poly ethylene propylene diene monomer; 0.1 to 1 part of an antioxidant; 1-2 parts of a lubricant; 0.1 to 1 part of a cross-linking agent; and 0.1-1 part of an assistant cross-linking agent. The anti-compression and anti-torsion energy storage cable prepared by the invention has excellent mechanical performance and electrical performance, and the anti-compression and anti-torsion performance of the energy storage cable is improved.

The invention belongs to the technical field of intravascular stents, and particularly discloses a degradable peripheral artery stent, the cross section of the degradable peripheral artery stent is of an annular structure, the degradable peripheral artery stent is applied to the peripheral artery of the human body and comprises a plurality of supporting units and connecting units in the axial direction of the stent, the connecting units are located between the supporting units, and the adjacent supporting units are connected through the connecting units; the supporting unit comprises an end supporting unit and a middle supporting unit, and the end supporting unit and the middle supporting unit are each of a closed-loop structure formed by intersecting a sine-like curve and a reverse sine-like curve. The stent is integrally formed through a 3D printing technology, and is high in structural stability and good in flexibility. According to the degradable peripheral artery stent of the structure, degradable polylactic acid is adopted as a stent material, inflammatory reaction caused by the fact that the stent exists in blood vessels for a long time is greatly avoided, and the stent has good flexibility and adherence performance under the condition that the stent has enough radial supporting force; and the risk of restenosis after the stent operation is reduced.

The utility model relates to a top cover middle cross beam structure assembly, an automobile body and an automobile, the top cover middle cross beam structure assembly comprises a top cover cross beam upper plate, a top cover cross beam lower plate, a first side wall connecting piece and a second side wall connecting piece, the top cover cross beam upper plate is provided with a first welding part, and the top cover cross beam lower plate is provided with a second welding part; the first side wall connecting pieces are arranged at the two ends of the top cover cross beam lower plate, third welding parts are arranged at one ends of the first side wall connecting pieces, the second side wall connecting pieces are arranged below the first side wall connecting pieces, and fourth welding parts are arranged at one ends of the second side wall connecting pieces; the end face of the second welding part abuts against the end face of the third welding part, the first welding part is connected with the tops of the second welding part and the third welding part, and the fourth welding part is connected with the bottoms of the second welding part and the third welding part. Therefore, each welding spot of the welding area is in spot welding connection with less than three layers, and the situation that the welding effect is affected due to welding defects during welding of the multi-layer metal plate structural part is avoided.

The application relates to a connecting structure of a side wall assembly and a panoramic sunroof and an automobile. The connecting structure of the side wall assembly and the panoramic sunroof comprises a panoramic sunroof, a sunroof reinforcing ring, an assembly support and a side wall assembly. The assembly support is connected with the sunroof reinforcing ring, and the assembly support is connected with the panoramic sunroof. The side wall assembly comprises a B upright column upper inner plate reinforcing piece and a B upright column inner plate. The assembly support, the B upright column upper inner plate reinforcing piece and the B upright column inner plate form a three-layer connecting structure. In the embodiment of the application, the three-layer connecting structure formed by the assembly support, the B upright column upper inner plate reinforcing piece and the B upright column inner plate is arranged, the supporting performance of the side wall assembly to the assembly support is enhanced, and the connecting performance of the sunroof reinforcing ring connected with the side wall assembly through the assembly support is improved.

The utility model provides an implant pushing system which comprises an implant and a pushing rod used for pushing the implant. The pushing rod is a hollow pipe, and the pushing rod is provided with a far-end pipe body located at the far end; a plurality of through groove groups are formed in the far-end tube body at intervals in the axial direction of the push rod; a dislocation angle is formed between every two adjacent through groove sets in the preset circumferential direction of the far-end tube body in the direction from the near end of the far-end tube body to the far end of the far-end tube body, and the dislocation angle ranges from 5 degrees to 85 degrees; according to the implant pushing system, the pushing delay phenomenon can be avoided, and the pushing stability of the implant pushing system is improved; in addition, the torsion performance of the far end of the pushing rod can be improved, the conveying in-place performance of the pushing rod can be improved, meanwhile, the situation that the far end of the pushing rod is broken when being subjected to large torsion force can be avoided, and the overall pushing stability of the implant pushing system is improved.

The utility model provides a torsion box which comprises a torsion box body connected to a vehicle body and a reinforcing beam connected to the torsion box body. A total force transmission cavity is defined by the torsion box body and a vehicle body. The reinforcing beams are located in the force transmission main cavity, and force transmission branch cavities are defined in the force transmission main cavity. And at least part of cavity bodies of the force transfer sub-cavities are aligned with the cabin longitudinal beam front section in the front-back direction of the vehicle body. According to the torsion box, a direct force transmission channel can be established in the front-back direction of a vehicle body, the force transmission effect is improved, the overall rigidity of the torsion box body can be improved, and then the torsion resistance of the vehicle body is improved; therefore, the reinforcing beams are arranged in the force transmission main cavity to define the force transmission branch cavities, the overall torsion performance of the vehicle body can be improved, the collision force transmission performance of the vehicle body can be improved, and then improvement of the performance of the whole vehicle is promoted.

The invention relates to the technical field of vinylon yarn production, in particular to a vinylon yarn roving frame with tension convenient to adjust, which comprises a frame, a conveying component for conveying vinylon yarn is arranged on one side of the upper surface of the frame, and an adjusting component for adjusting the tension of the vinylon yarn is arranged on the other side of the upper surface of the frame. When the diameter of a yarn drum on the surface of a winding roller is gradually increased and the speed of vinylon yarn is faster and faster, a worker controls a rotating column and an adjacent rotating sleeve to rotate in opposite directions, so that when the vinylon yarn penetrates through the space between a first rotating frame and a second rotating frame, the first rotating frame and the second rotating frame rotate in opposite directions, and the vinylon yarn is wound on the winding roller. Therefore, before the vinylon yarn enters the winder and is twisted, the opposite first protrusions can carry out false twisting on the vinylon yarn from the two sides of the vinylon yarn at the same time, forward and reverse twisting alternate false twisting can be effectively formed on the vinylon yarn, the vinylon yarn is more compact and stable, and the twisting effect on the vinylon yarn is improved.

This invention belongs to the field of battery technology, specifically disclosing a cell cover and a cell. In the cell cover, a first plastic part and a connecting block are sequentially disposed on the side of the cover body away from the electrode assembly. The electrode post passes sequentially through the cover body, the first plastic part, and the connecting block from the side where the electrode assembly is located, and is then riveted to the connecting block body of the connecting block. The first plastic part has an elastic buffer on its body, which provides support and cushioning during the riveting of the electrode post, preventing damage or cracking of the first plastic part due to excessive riveting force. The connecting block body has a protective insert, which increases the structural strength of the connecting block body, improves its torsional resistance, and prevents deformation of the connecting block body during riveting, thus avoiding damage or cracking of the first plastic part due to pressure from the connecting block. This invention also provides a cell, including the aforementioned cell cover.

The invention relates to the technical field of railway vehicles, and provides an underframe, a vehicle body and a railway vehicle. The two end bottom frames are oppositely arranged at the two ends of the middle bottom frame, each end bottom frame comprises a sleeper beam, a plurality of in-sleeper cross beams and in-sleeper longitudinal beams, each in-sleeper longitudinal beam is provided with a variable-cross-section structure, and the variable-cross-section structures are used for enabling the in-sleeper longitudinal beams and the middle longitudinal beams to be through and continuously arranged in the longitudinal direction. The in-sleeper longitudinal beams are arranged along the longitudinal direction of the underframe in a full-length mode, transmit longitudinal stretching and compression loads step by step, and bear vertical loads and torsional loads of a vehicle body; and the variable cross-section structure is adopted, so that the in-sleeper longitudinal beam and the middle longitudinal beam can be continuously arranged in the longitudinal direction, continuous transition of force flow transmission is guaranteed, sudden change or notch effect is avoided, meanwhile, the variable cross-section longitudinal beam further bears the vertical load and the torsional load of the vehicle body, and therefore the strength, rigidity and torsional performance of the vehicle body are improved.

A fiber optic system for a body part of an anthropomorphic test device is disclosed, the fiber optic system comprising at least one body part and at least one optical fiber having a plurality of cores spaced apart from each other and in a spiral relationship, the cores extending between ends of the optical fibers to sense the position of the at least one body part. Each core has a plurality of grating sensors arranged along its length, the grating sensors being capable of determining the position and orientation of the body part.

The invention belongs to the technical field of airplane wing strength design, and particularly relates to a spanwise variable stiffness connection T-shaped sealing structure and an optimization method, the spanwise variable stiffness connection T-shaped sealing structure comprises a sealing structure, a connection corner box and a support structure; the supporting structure comprises a plurality of supporting partition plates distributed in the spanwise direction and wall plates fixedly installed above the supporting partition plates, honeycomb sandwich cores are arranged at the positions, between the adjacent supporting partition plates, of the wall plates, and the rear edges of the wall plates are fixedly connected with a plurality of connecting corner boxes in the spanwise direction. The sealing structure comprises a sealing plate and a vertical rib, the sealing plate is divided into a front fixed section and a rear cantilever section, and the vertical rib is located between the fixed section and the cantilever section; the fixing section is fixedly connected with the upper surface of the connecting angle box and the supporting partition plate, the vertical rib is fixedly connected with the vertical face of the rear end of the connecting angle box, the T-shaped sealing structure and the wall plate form an integral structure, the relative deformation is reduced, the strain level of the sealing structure is effectively reduced, and the service life of the sealing structure is prolonged.

An optical fiber insulator (100) having an optical fiber cable (200) is provided. The optical fiber insulator (100) includes: an optical fiber cable (200); a ceramic sheath (120), wherein the ceramic sheath (120) is hollow and has an internal diameter (D) configured to guide the optical fiber cable (200); an insulating filler material (130) that at least partially fills the ceramic sheath (120) and is disposed between the optical fiber cable (200) and the ceramic sheath (120), wherein the insulating filler material (130) has thermal properties similar to those of the optical fiber cable (200) and the ceramic sheath (120), and wherein at least one end of the optical fiber insulator (100) is closed by at least one end cap (151, 152).

The utility model belongs to the technical field of rigid connection, and particularly relates to a rigid connection device for an H-shaped steel beam and an H-shaped steel column, which comprises the H-shaped steel column, two stiffening plates are welded in the H-shaped steel column, a beam column connecting plate is fixedly connected in the middle between the stiffening plates, round holes are arranged on two sides of the beam column connecting plate, and the H-shaped steel column is fixedly connected with the beam column connecting plate. H-shaped steel beams are connected to the round holes through bolts, an H-shaped clamping groove is formed in one side of each H-shaped steel beam, and through connecting holes are formed in the two sides of each H-shaped clamping groove. According to the rigid connection device for the H-shaped steel beam and the H-shaped steel column, the supporting piece is arranged between the H-shaped steel beam and the H-shaped steel column, so that the overall rigidity and stability of a beam column connection joint are remarkably enhanced, the supporting piece shares part of loads borne by a beam column, deformation of the joint in the stress process is reduced, and the rigidity of the joint is improved. The structure can keep better integrity when bearing complex loads, and the lateral force resistance and torsion resistance of the structure are improved.

The utility model relates to the technical field of drill bits, and discloses a combined drill bit convenient to disassemble, which comprises a rear handle part, a drill bit part and a fixing piece, the drill bit part is installed inside the rear handle part in a separable mode and is fixed by the fixing piece, the rear handle part comprises a rhombic handle, and the left side of the rhombic handle is concentrically and fixedly connected with a connecting sleeve. A connecting hole is formed in the axis of the rhombic handle, a rhombic inner groove is formed in the axis of the connecting sleeve, the connecting hole is communicated with the rhombic inner groove, the drill bit part comprises a drill bit body, and a rhombic pin head is concentrically and fixedly connected to the right end of the drill bit body. According to the combined drill bit convenient to disassemble, a rhombic pin head is inserted into a rhombic inner groove to be limited, then a fixing piece is inserted into a connecting hole to fix the rhombic pin head, and a rhombic handle is connected with an electric tool in the using process, so that the situation that chippings enter the connecting hole to cause difficult disassembly can be effectively avoided; and the effect of convenient disassembly and combination is achieved.

The utility model discloses a water-cooled cable jacket rubber tube, which relates to the technical field of water-cooled cables and comprises a cable body, a supporting mechanism is arranged at the inner ring of the cable body and comprises an outer supporting tube, the outer supporting tube is fixedly arranged in the cable body in a penetrating manner, a clamping groove is integrally formed in the inner ring of the outer supporting tube, and the clamping groove is fixedly connected with the cable body. A heat dissipation groove is integrally formed in the outer ring of the outer supporting pipe, and the heat dissipation groove is in a spiral shape. According to the utility model, the heat dissipation grooves are arranged to be spiral, so that the friction coefficient of the surface of the outer supporting pipe can be increased, the friction force during torsion is increased, the torsion capability of the outer supporting pipe is improved, and the heat dissipation effect of the cable can be improved.

The steel wire rope comprises a steel wire rope body, the steel wire rope body is mainly composed of a steel wire main core, a first steel wire rope outer layer, a connecting layer and a second steel wire rope outer layer, the steel wire main core body is composed of an inner layer face and an outer layer face, the inner layer face wraps the outer layer of the steel wire main core body, and the connecting layer wraps the outer layer of the steel wire main core body. The outer layer face, the inner layer face and the steel wire main core are woven in a crossed mode, the outer layer surface of the second steel wire rope outer layer is fixedly connected with a winding layer, the winding layer is composed of a plurality of synthetic fibers, the first steel wire rope outer layer is located between the inner side face of the second steel wire rope outer layer and the steel wire main core, and the core supporting force and strength of the steel wire rope are improved. The steel wire rope is made of synthetic fibers of the winding layer, so that the steel wire rope has excellent wear resistance, the service life of the steel wire rope can be greatly prolonged, and the steel wire rope also has certain corrosion resistance.