99 results about "Torsional strength" patented technology

The utility model relates to the technical field of battery cover plates, and discloses a connecting structure of a rubber coating ring and a top cover plate, which comprises the top cover plate, a pole hole for a pole to pass through is arranged in the top cover plate, and the pole is provided with a middle section arranged in the pole hole in a penetrating manner; the periphery of the middle section is wrapped with a rubber coating ring, and a notch groove is formed in the periphery of the rubber coating ring. An upper plastic part is embedded in the pole hole, the periphery of the rubber coating ring is wrapped by the upper plastic part, the notch groove is embedded, and the pole, the top cover plate, the rubber coating ring and the upper plastic part are fixedly combined into a whole; the notch groove is formed in the periphery of the rubber coating ring, the upper plastic part can be embedded in the notch groove in the process of forming the upper plastic part through injection molding, and the upper plastic part and the top cover piece are combined into a whole, so that the torsion value is increased, the upper plastic part cannot fall off after being subjected to a fatigue test, the service life of the upper plastic part is prolonged, and the anti-rotation capability of the pole is improved.

The utility model discloses an antenna support and an unmanned off-highway dumper. The antenna support comprises a mounting plate, two pairs of mounting seats, a pair of front inclined supporting rods, a pair of rear inclined supporting rods and a pair of rear supporting rods. The pair of front inclined supporting rods, the pair of rear inclined supporting rods and the pair of rear supporting rods are in one-to-one correspondence and are splayed, the front inclined supporting rods and the rear inclined supporting rods incline forwards, the large opening ends of the pair of front inclined supporting rods are connected with the two ends, close to the length direction, of the bottom of the mounting plate respectively, and the small opening ends of the pair of front inclined supporting rods are connected with the pair of mounting bases close to the mounting plate respectively; the small opening ends of the pair of rear supporting rods are connected with the two sides of the middle of the bottom of the mounting plate respectively, the large opening ends of the pair of rear supporting rods are connected with the other pair of mounting bases respectively, the top ends of the rear inclined supporting rods are connected with the positions, close to the tops, of the corresponding front inclined supporting rods, and the bottom ends of the rear inclined supporting rods are connected with the lower portions of the corresponding rear supporting rods. Compared with a bending steel plate in the prior art, the bending steel plate has the advantages of being light in weight, high in overall torsional strength, not prone to breakage and good in reliability.

The utility model discloses a steering wheel rim torsion test fixture which comprises a support frame and at least two clamping structures, the clamping structures are arranged in a central symmetry mode, one end of each clamping structure is detachably installed on the support frame, and the other end of each clamping structure can abut against a steering wheel rim and is used for clamping and fixing the steering wheel rim. The connecting structure is mounted on one of the clamping structures and is used for being connected with an external force application device so as to test the torsional strength of the steering wheel rim; through the clamping structure, the steering wheel rim is efficiently and stably clamped and fixed, the overall universality and adaptability of the clamp are improved, the working efficiency is high, the adaptability is high, and the connecting structure provides a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim; the accuracy and consistency of torque application in the test process are ensured, and the accuracy and repeatability of test data can be improved.

The utility model relates to the technical field of engines, and provides a high-efficiency large-torque rotor engine. One of a plurality of turbine blades, slope blades and cambered surface blades is arranged in a rotor combustion chamber, the tangential stress area of a rotor is increased, dispersed and efficient combustion is achieved through an ignition channel, thrust in the rotating direction of the rotor is greatly increased, a crankshaft obtains larger torque, the overall acting power is also increased, and the service life of the rotor is prolonged. And the thrust-weight ratio of the rotor engine is improved. The crankshaft is matched with the rotor inner ring gear and the stator gear, so that power transmission of rotor acting is completed. The rotor inner ring gear and the rotor can adopt an integrated or split structure, and are connected through a polygonal embedded structure when being split, so that the torque resistance of the rotor is improved, the shear strength of a connecting bolt can be reduced, and the rotor is suitable for a high-power rotor engine structure. By improving the rotor structure, optimizing the blade design, adopting the polyhedral assembly structure and the like, the working efficiency, the torque and the overall performance of the engine are improved.

The utility model discloses a kind of fixed rotary buckle type anti-slip structure, comprising: main component, the main component includes first associated piece and second associated piece.The utility model is provided with bevel, clamping block, clamping groove and ring, and the contact of second associated piece rotation connection process with bevel and press will make clamping block automatically move out and facilitate installation, clamping block enters the clamping groove and can be implemented anti-removal limiting reinforcement, two clamping blocks are opened by ring and can be conveniently disassembled by single hand moving out;The step can be implemented connection limiting reinforcement, convenient to use, improve the structural stability;Based on the above beneficial effect, it is provided with connecting rod, connecting slot, positioning rod and positioning slot, connecting rod enters connecting slot and can be implemented directional reinforcement between first associated piece and second associated piece, positioning rod is respectively inserted with two positioning slots and can be implemented positioning of positioning rod and facilitate device disassembly;The step, improved torsional strength, connection is stable, and anti-slip effect is better.

The invention discloses a flange plate and shaft tube integrated composite material transmission shaft and a design method. The transmission shaft comprises a main body shaft tube, two flange plates arranged at the two ends of the main body shaft tube correspondingly and an outer stacking type reinforced connecting structure used for connecting the main body shaft tube and the flange plates. All the parts are integrally formed through an integral winding and laying process to form a continuous composite material structure. According to the method, in combination with installation space and design indexes, simulation models with different emphasis points are established for different structural areas of the flange plate and shaft tube integrated composite transmission shaft, and dynamic iteration is conducted on the layering proportion and the layering decline scheme through simulation calculation, so that collaborative optimization of the critical rotating speed and the torsional strength is achieved.

The utility model discloses a coal mine sampling device, which relates to the technical field of sampling devices, and comprises a sampling barrel, a sampling pipe, a sampling pipe and a sampling pipe, the spiral shaft is rotationally mounted in the sampling barrel, and a gap is reserved between the spiral shaft and the inner wall of the sampling barrel; the discharge hole is formed in one end, far away from the sampling hole, of the sampling barrel; the power source is mounted at one end of the sampling barrel and is in transmission connection with the spiral shaft; the at least one reinforcing rib is fixed to the edge position of the spiral shaft in the axial direction, and the reinforcing rib extends into the gap in the rotating direction of the spiral shaft; by means of the reinforcing ribs fixed to the edge of the spiral shaft in the axial direction, the overall rigidity and torsional strength of the spiral shaft are improved, the spiral shaft is effectively prevented from deforming or being subjected to torsional fatigue due to the action of torque and bending moment in the long-distance conveying process, and therefore the service life of the spiral shaft is remarkably prolonged.

To provide a motor pump that can ensure the torsional strength of the mounting section of the main shaft to which the impeller is attached, while suppressing the generation of fluid vortices and backflow downstream of the main shaft. [Solution] The motor pump comprises a first impeller, a main shaft to which the first impeller is fixed, a motor for rotating the first impeller, and a casing that houses the first impeller and the main shaft and has a fluid passage through which fluid flows. The downstream end of the main shaft is positioned in the fluid passage, and the main shaft has a mounting portion to which the first impeller is attached, and a smaller diameter portion positioned downstream of the mounting portion and having a smaller diameter than the mounting portion.

According to the computerized embroidery machine disclosed by the invention, vibration caused by rotation of the eccentric cam is inhibited through the first balance structure, so that the operation stability of the computerized embroidery machine is improved, and the precision of the computerized embroidery machine is ensured. The auxiliary shaft is located outside the machine shell and located above or below the machine shell, so that the auxiliary shaft and the first balance structure are not affected by the distance between the two adjacent machine heads, installation is convenient, and therefore the assembling efficiency of the computerized embroidery machine is improved. Vibration caused by movement of the presser foot driver and the needle bar driver is restrained through the balance block, so that the operation stability of the computerized embroidery machine is improved, and the precision of the computerized embroidery machine is guaranteed. The diameter of the auxiliary shaft is larger than or equal to that of the upper shaft, the bending strength and the torsional strength of the auxiliary shaft can be improved by increasing the diameter of the auxiliary shaft, and therefore the auxiliary shaft can bear larger loads when bearing torque and vibration generated by the eccentric cam, and deformation caused by the loads is reduced.

The invention discloses an internal insulation steel pipe special cable and a four-groove roller reducing mill thereof, and relates to the technical field of cables, the cable comprises a steel pipe layer and convex ribs integrally processed on the outer surface of the steel pipe layer; the reducing mill comprises a fixing ring; the rolling assembly is rotationally installed in the fixing ring, the rolling assembly comprises a rotating ring and four rollers distributed in the rotating ring in a surrounding mode, and a gap used for extruding a steel pipe layer of the cable to form a convex rib is formed between every two adjacent rollers; and the driving assembly is used for driving the rolling assembly to rotate in the fixing ring so as to form a convex rib which extends in the axial direction and is of a linear structure or a spiral structure on the surface of the cable. According to the invention, through the relation between the revolution speed of the roller and the advancing speed of the cable, the convex ribs with axial linear structures or the convex ribs with different leads and spiral structures can be flexibly processed, the torsional strength, the heat dissipation efficiency and the installation guidance quality of the special cable in different laying environments are improved, and the customization requirements of high-end markets are met.

The utility model relates to the technical field of electro-tricycle body accessories, in particular to a durable electro-tricycle headlamp installation support which comprises sleeves, the sleeves are arranged in pairs and arranged on the tops of two front reduction gears in a sleeved mode respectively, the outer wall of each sleeve is provided with a supporting plate extending towards the front of an electro-tricycle, and the supporting plates are arranged on the outer walls of the sleeves respectively. Mounting holes which correspond to each other are formed in the supporting plates; the outer reinforcing ribs are arranged along the edge of the supporting plate and are connected with the outer wall of the sleeve; the supporting plate, the outer reinforcing rib and the outer side wall of the sleeve form a shell structure. The two sets of outer reinforcing ribs are arranged on the sides, close to each other, of the two supporting plates correspondingly. Through the combination of the inner reinforcing ribs and the outer reinforcing ribs, the anti-twisting strength of the supporting plate is improved, and therefore stable supporting force is provided for a headlamp.

The utility model provides a cross beam structure of a road roller and the road roller, and belongs to the technical field of road roller parts, the cross beam structure of the road roller comprises a cross beam body and a hinge seat, the hinge seat comprises a mounting platform and at least one mounting plate arranged on the mounting platform, the mounting platform is used for connecting a hinge frame of a rear frame of the road roller, and the mounting plate is arranged on the mounting platform. The mounting plate is inserted into the cross beam body, the mounting plate extends to a second side face of the cross beam body through a first side face of the cross beam body, and the first side face and the second side face are oppositely arranged; wherein the installation platform abuts against and is connected with the first side face, and the installation plate is connected with the second side face. According to the cross beam structure of the road roller disclosed by the embodiment of the invention, the connecting structure strength and the torsional strength of the cross beam body and the hinge seat are enhanced.

The utility model discloses a badminton racket with a special middle tube, and relates to the technical field of badminton rackets, the badminton racket comprises a racket frame, the inner wall of the racket frame is fixedly connected with a plurality of groups of wires, the bottom end of the racket frame is fixedly connected with two groups of connecting rods, the two groups of connecting rods are arc-shaped, the bottom ends of the two groups of connecting rods are fixedly connected with connecting pieces, and the connecting pieces are fixedly connected with the middle tube. A middle pipe is fixedly connected to the bottom end of the connecting piece, the plane structure of the middle pipe is of a hexagonal structure, and a honeycomb structure is arranged in the middle pipe. Through the design of the honeycomb structure, the middle tube forms multidirectional support during batting, the torsional strength is improved, the twisting deformation at the moment of batting is effectively reduced, the angle of the bat surface is more stable, the ball control accuracy is improved, and the non-forced error rate is reduced; the wrist pad can buffer vibration when bearing impact force, reduce the influence of high-frequency vibration on the wrist, provide energy storage and release functions and accelerate deformation recovery.

The composite drill rod comprises a composite pipe body, a first metal connector, a second metal connector and a lining pipe arranged between the composite pipe body and the first metal connector. The outer wall of the first pipe body connecting section of the first metal connector and the outer wall of the second pipe body connecting section of the second metal connector are each provided with a conical connecting face and a cylindrical connecting face, and thin nails are densely distributed on the cylindrical connecting faces. The inner wall of the connecting section of the composite material pipe body is matched with the outer wall of the connecting section of the pipe body in shape and is connected with the pipe body through a bonding layer; the thick end of the thin nail is located in the drill hole of the pipe body connecting section, an adhesive layer is arranged between the thick end of the thin nail and the inner wall of the drill hole, and the thin end of the thin nail is located in the composite pipe body and used for forming a mechanical and adhesive mixed connecting structure. According to the drill rod, stress concentration can be avoided, the consistency of bearing is enhanced, the tensile strength and the torsional strength of the drill rod are improved, and the drill rod is lighter, higher in bearing capacity and higher in reliability. The invention further discloses an integral forming preparation method of the composite drill rod.

The utility model relates to the technical field of drill rod connection, in particular to a stable drill rod connecting structure for geological drilling construction, which comprises a first drill rod and a second drill rod, a connecting female head and a connecting male head are respectively and fixedly mounted at the butted end parts of the first drill rod and the second drill rod, and a plurality of raised strips are arranged on the outer walls of the connecting female head and the connecting male head. And a connecting sleeve is slidably mounted on the outer walls of the connecting female head and the connecting male head. Compared with the prior art, the drill rod has the advantages that the first drill rod, the second drill rod, the connecting male head and the connecting female head are arranged, the connecting male head and the connecting female head are in threaded connection, meanwhile, the connecting sleeve is installed on the outer wall of the connecting female head and the outer wall of the connecting male head, the multiple protruding strips enter the multiple grooves, and therefore the first drill rod and the second drill rod can be connected more stably; according to the drill rod, tight fit is achieved, the torsional strength is improved, meanwhile, it is ensured that the stability is higher when the drill rod transmits torque, geological drilling tasks can be conveniently implemented, and therefore the problems existing in the prior art are effectively solved.

The utility model relates to the technical field of coaxial lines, in particular to a dynamic-use-resistant vehicle-mounted coaxial line, which is characterized in that a fluoroplastic monofilament is spirally wound on the periphery of a central conductor, then an insulating layer, an aluminum foil layer, a braid layer and an outer coating layer are sequentially coated on the periphery, and the fluoroplastic monofilament is spirally wound on the periphery of the central conductor, so that the dynamic-use-resistant vehicle-mounted coaxial line is formed. And the insulating layer is extruded on the periphery of the fluoroplastic monofilament, so that a gap is formed between the central conductor and the insulating layer, the insulation effective dielectric constant is reduced, the torsional strength of the coaxial line is improved, and the use requirement of a dynamic environment is met. The aluminum foil layer sequentially comprises a first aluminum material layer, a first PET layer, a second aluminum material layer, a second PET layer and a second aluminum material layer between the two PET layers from inside to outside, and after the aluminum foil layer is rubbed by the insulating layer and the woven layer in the twisting motion, signal leakage is blocked through the second aluminum material layer between the two PET layers, and therefore it is guaranteed that signals are not leaked.

The application belongs to the technical field of aero-engines, and particularly relates to a transmission shaft torque test modification structure, which comprises a fixed layer arranged on a shaft body of an original transmission shaft, a first functional structure connected with the original transmission shaft through the fixed layer, the torsional strength of the first functional structure being less than that of the original transmission shaft, and a second functional structure arranged on the first functional structure, the torsional strength of the second functional structure being less than that of the first functional structure, wherein the second functional structure constitutes a strain concentration area for mounting a strain gauge to measure torque, and a transmission shaft torque test modification method is used to realize the increase of the sensitivity of a strain measurement area on the premise of ensuring the rigidity and strength of the original transmission shaft unchanged.

The utility model relates to a sleeve stable in connection, which belongs to the technical field of sleeves and comprises a sleeve body, the sleeve body is composed of two shells, a hexagonal clamping connector is fixedly connected to the top of the sleeve body, and an electric screwdriver output shaft is arranged at the top end of the sleeve body. A hexagonal clamping groove used in cooperation with the hexagonal clamping head is formed in the electric screwdriver output shaft. Compared with the prior art, the electric screwdriver has the advantages that the hexagonal clamping groove and the hexagonal clamping head are used in cooperation, a certain positioning effect can be achieved, smooth butt joint between the electric screwdriver output shaft and the hexagonal clamping head is guaranteed, the torsion resistance of the hexagonal clamping head can be improved, and the electric screwdriver output shaft can be locked along with tightening of the locking bolt. And one end of the locking bolt can be inserted into the corresponding clamping hole, so that the purpose of fixing the supporting ring and the hexagonal clamping head can be achieved, radial displacement of the hexagonal clamping head under the high-torque working condition is reduced, and the connection stability of the sleeve body can be ensured.

Aircraft comprising at least one flexible profile of composite material forming at least one element among a coupling shaft of a moving surface and a moving surface. The invention relates to an aircraft comprising at least one moving surface (20) connected to a fixed structure (22) by at least one articulation system (24) which has a pivot axis (A24), at least one actuation system configured to rotate the moving surface (20) around the pivot axis (A24) and at least one profile (32) of composite material comprising reinforcing fibers embedded in a resin matrix, at least 50% of the reinforcing fibers of the profile (32) forming with a longitudinal direction an angle between [-60° and -45°] and between [+45° and +60°], less than 40% of the reinforcing fibers of the profile (32) forming with the longitudinal direction an angle between [-30° and +30°].This profile (32) can form the moving surface (20) and / or a coupling shaft (28) connecting the moving surface (20) and the fixed structure (22) or the moving surface (20) and the actuation system. This arrangement of reinforcing fibers gives the profile very high torsional strength while allowing it to deform in bending. Figure 5.

The invention relates to the technical field of building structure detection equipment, in particular to strength detection equipment for a building engineering steel structure and a detection method.The strength detection equipment comprises a base, a vertical frame and an upper frame body which are fixedly arranged on the upper side of the base, and a hydraulic pressurizing rod and a pressurizing plate which are installed on the upper frame body; the hydraulic pressurizing rod can be used for downwards pressurizing the steel structure frame to detect the strength of the steel structure frame, the pressure detecting plate of the lower supporting plate can be used for detecting the stress condition of each supporting foot fulcrum, and therefore the pressure distribution condition of the steel structure is comprehensively connected, and the lower supporting plate is pushed by the side-pushing hydraulic telescopic rod, so that the strength of the steel structure frame is detected. According to the lateral-pushing hydraulic telescopic rod, a mounting pipe fitting can be laterally rotated and staggered, so that the torsional strength of the steel structure frame is detected, and the torsional strength of the steel structure frame can be further tested under the condition that the steel structure frame is subjected to a certain vertical pressure by matching the lateral-pushing hydraulic telescopic rod with a hydraulic pressurizing rod for use.

The utility model discloses a prevent the slide rail of stress deformation, contain: first rail, second rail, first support piece and second support piece, first rail contains first wall and first side wall, and first wall sets up first installation slot, and first wall and first side wall extend to the extension of same direction, and the extension sets up the second installation slot parallel to first installation slot, and first wall, first side wall and extension form the first passageway of second rail movably arranged, and second rail contains second wall and second side wall, and the length of first wall, first side wall and extension is greater than the length of second wall and second side wall, and first support piece sets up first installation slot and leans against first side wall, and second support piece sets up second installation slot and leans against extension side wall, and first support piece and second support piece are used to increase the torsional strength of avoiding deformation when first rail is pulled by second rail.

The utility model discloses a plugging-resistant eight-core multi-mode stainless steel test insertion core, relates to the technical field of optical communication test connectors, and particularly relates to an improvement of the plugging-resistant eight-core stainless steel test insertion core suitable for multi-mode optical fiber connection. In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the insertion core comprises an insertion core body, the insertion core body is of a flat rectangular structure, and the insertion core body is a stainless steel insertion core; a plurality of optical fiber through holes which are arranged in parallel are arranged in the insertion core body, and the aperture of the optical fiber through holes is matched with a multimode optical fiber. And the coupling alignment precision during optical signal transmission is ensured. The overall structure is compact, and the connector has the characteristics of high strength and wear resistance, and adapts to frequent plugging scenes. And two circular positioning holes are formed in the insertion surface of the insertion core body. And the circular positioning hole is used for being matched with a positioning column in the test interface module, so that the insertion core is ensured to have good repeated positioning performance when being inserted. The problems that an existing plastic insertion core is short in service life, low in strength and not suitable for a high-frequency testing environment are solved, the overall structure is stable, and the compressive strength and the torsional strength are superior to those of a traditional plastic insertion core.

The application discloses a straddle type four-bar linkage bottom-discharging gangue filling support, which comprises a base, a platform seat is installed at the back of the base, and the platform seat is a backward extension and elevation mechanism of the base; a shield beam is connected to the upper part of the platform seat through a normal four-bar linkage, the normal four-bar linkage comprises a front connecting rod and a rear connecting rod, a bottom-discharging conveying scraper is laid between the front connecting rod and the rear connecting rod on the platform seat, and a gangue discharging hole is formed in the upper surface of the platform seat and corresponds to a bottom-discharging port of the bottom-discharging conveying scraper; a top beam is connected to the front end of the shield beam, the top beam is horizontally arranged above the base, and the shield beam is downwardly inclined from the connecting position with the top beam to form a backrest structure. The application solves the problems of insufficient torsional strength of the existing solid filling hydraulic support, and filling failure caused by the absence of a lower filling shield platform.

The invention relates to the technical field of steel structures, and discloses a high-safety anti-torque steel structure truss and an anti-torque method.The truss comprises a first supporting pipe and a second supporting pipe, a connecting pipe is fixedly installed on the side face of the first supporting pipe, the second supporting pipe is slidably installed on the connecting pipe, and multiple sets of first limiting grooves distributed at intervals are formed in the connecting pipe; the second supporting pipe is provided with two sets of second limiting grooves corresponding to the first limiting grooves in position, and the first supporting pipe and the second supporting pipe are jointly provided with rib plates. The device has the beneficial effects that through mutual limiting and locking of the first limiting plate, the first supporting pipe, the second supporting pipe, the rib plate, the first connecting plate and the second connecting plate, connection and fixation of a large number of screws are avoided, the device mounting and dismounting efficiency is improved, a stable triangular structure is formed through the first supporting pipe, the second supporting pipe and the rib plate, and the device mounting and dismounting efficiency is improved. And the torsional strength and the stability of the device are improved.

The utility model discloses a carbon fiber propeller, which belongs to the field of novel power parachute and light airplane carbon fiber propeller reinforcing structures, and comprises a propeller blade, the propeller blade is divided into an upper blade surface and a lower blade surface, the upper blade surface and the lower blade surface are connected through one or more rib beams in the middle, and the upper blade surface and the lower blade surface are integrated. The upper blade surface and the lower blade surface of the propeller blade are made of carbon fibers or carbon fiber and honeycomb composite materials to form a shell, and the ribbed beams are made of wood, carbon fibers or other composite materials. The main points of the technical scheme are as follows: the structure ensures that the upper surface and the lower surface of the propeller blade are small in compression coefficient and high in compressive strength when the propeller blade is stressed, and a D-shaped beam is formed at the front edge of the propeller blade; due to the fact that the inner portion of the propeller blade is hollow except the ribbed beams, the weight of the propeller blade is reduced, the acceleration performance of the propeller blade is improved, the reverse torsion force is small, and the working efficiency of the propeller is high under the condition that high strength is guaranteed.

The utility model relates to the technical field of rim spinning machines, and discloses a rim spinning machine numerical control spinning roller support which comprises a fixing frame, a servo motor is fixedly connected to the inner wall of the top end of the fixing frame, a rotating rod is fixedly connected to the end of an output shaft of the servo motor, and a first gear is fixedly arranged on the rod wall of the rotating rod in a sleeved mode. The inner wall of the top end of the fixing frame is rotationally connected with a driving shaft, the shaft wall of the driving shaft is fixedly sleeved with a second gear, the first gear and the second gear are meshed with each other, and the top end of the driving shaft is fixedly connected with an adjusting plate. After the servo motor is started, the output shaft drives the rotating rod and the first gear to rotate, the second gear and the driving shaft are driven to rotate through meshing transmission, it is ensured that the rotating precision of the driving shaft is consistent with that of the servo motor, and accurate control over the axial angle of the adjusting plate is achieved; and the torsional strength is enhanced by the inclined reinforcing fins at the joint of the reinforcing fin adjusting plate and the driving shaft.

The invention belongs to the technical field of aero-engines, and particularly relates to a transmission shaft torque test refitted structure, which comprises a fixed connection layer arranged on a shaft body of an original transmission shaft; the first functional structure is connected with the original transmission shaft through the fixed connection layer, and the torsional strength of the first functional structure is smaller than that of the original transmission shaft; the second functional structure is arranged on the first functional structure, and the torsional strength of the second functional structure is smaller than that of the first functional structure; wherein the second functional structure forms a strain concentration area and is used for installing a strain gauge to measure torque, and the transmission shaft torque test modification method realizes improvement of the sensitivity of a strain measurement area on the premise of ensuring that the rigidity and the strength of the original transmission shaft are not changed.

The invention relates to the field of vehicles, and provides a door post structure and a vehicle. A first reinforcing rib comprising an edge rib, an annular rib and a plurality of first sub-ribs is arranged on a D column area of the door column structure. The edge rib is located at the edge of the D column area, the first sub-ribs surround the annular rib and are radially distributed, and the first sub-ribs are connected between the annular rib and the edge rib, so that the annular rib is subjected to push-pull force of the first sub-ribs in multiple positions in the circumferential direction of the annular rib, the annular rib serves as a center point, and the annular rib serves as a center point. A plurality of push-pull forces applied to the annular ribs by the plurality of first sub-ribs are mutually dragged or offset, so that the torsional strength of the D-column area is improved when a plurality of stress points on the D-column area are stressed.

The utility model discloses a novel full-manual reinforcing steel bar binding device, which relates to the technical field of building construction and comprises a main column and a guide rail, the guide rail is divided into an upper end and a lower end, an auxiliary reset mechanism is mounted between the upper end of the guide rail and the main column, a binding mechanism is mounted at the lower end of the guide rail, and a linkage component is mounted on the guide rail. The linear pushing structure imitating the stapler principle and the separated base design break through the stroke limit of a traditional rotating arm. An operator can complete the whole process of wire feeding, expanding, winding and knotting only by pressing the main column downwards in a one-way mode, the dependence on the technical proficiency of workers is reduced, the oval guide rail is of a split type flange structure, and the friction loss of binding wires is reduced; the rotating shaft and the hook claws are integrally welded through solid steel, and the torsional strength is improved. A tension spring and pressure spring double-reset system is arranged in the device, key moving parts do not depend on electricity, and the device adapts to the severe environment of a construction site.

The invention belongs to the technical field of fasteners, and discloses a self-tapping fusing screw with high torsional strength and efficient chip removal capacity, which comprises a screw cap and a screw rod, the screw rod comprises a threaded part, a drill tail part and a self-chip-removal part located between the threaded part and the drill tail part. The driving head of the screw cap is of a multi-tooth quincunx structure, the side wall of a driving tooth groove of the screw cap is designed to be an approximately vertical force transmission face, and the torsional strength and the anti-biting capacity are improved. A wedge-shaped self-chip-removal groove is spirally formed in the periphery of the self-chip-removal part, the groove depth and the groove width of the self-chip-removal groove are gradually narrowed and shallower from bottom to top, the self-chip-removal groove is in smooth transition with a thread groove, metal chips generated in the tapping process can be guided out of a connecting area, blocking is effectively prevented, it is ensured that a screw is screwed in smoothly, and the thread forming quality is protected. The technical problems that the head of an existing FDS screw is prone to slipping and chip removal is not smooth are solved, and the connection reliability, the production efficiency and the process stability are remarkably improved.