39 results about "Torsion strength" patented technology

The utility model relates to the technical field of forklift fork frame strength detection, in particular to a forklift fork frame strength detection device which comprises a bottom plate and a fork frame, and the top of the bottom plate is fixedly provided with a door-shaped frame and a mounting seat; two testing mechanisms used for carrying out downward pressing, lateral pushing and torsional strength detection on the fork frame are symmetrically arranged in the door-shaped frame, and control mechanisms used for controlling the door-shaped frame to move longitudinally are arranged at the positions, corresponding to the two testing mechanisms, of the top of the door-shaped frame; by arranging the testing mechanism, the effects of simulating a vertical pressure test during cargo bearing, simulating a lateral force test during cargo roll or vehicle body turning and simulating a torsional load test caused by uneven ground or cargo gravity center shift during cargo insertion can be achieved; the performance of the fork frame under various actual working conditions can be comprehensively evaluated, and it is ensured that the fork frame can work safely and reliably in a complex working environment.

The invention provides an air spring upper supporting structure, an air spring and a vehicle, and belongs to the technical field of suspension systems. The scheme that the top rubber, the blocking cover and the check ring are arranged on the upper supporting body is achieved through the arrangement of the installation groove, the reliability of matching with the piston rod can be guaranteed, and the compactness of the upper supporting structure of the air spring can be improved. The threaded sleeve is arranged in the mounting hole, so that structural damage to the area where the mounting hole is located can be effectively avoided, and the service life of the upper supporting structure of the air spring is prolonged. By arranging the heat insulation pad, the problem that the whole air spring is seriously heated due to the fact that the upper supporting body absorbs excessive heat is solved, and the service life of a rubber part in the air spring is shortened. The arc-shaped flow guide faces are arranged at the corners of the first air channel and the second air channel, so that vortexes are avoided, friction is reduced, and the problem of abnormal sound generated by air flowing is solved. Double connection of the threads and the positioning pins is adopted between the mounting hole and the threaded sleeve, so that the anti-loosening strength and the torsional strength of the threaded sleeve are enhanced, and the threaded sleeve is prevented from loosening.

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 gliders, in particular to a carbon beam composite material wing structure. The airfoil comprises an airfoil main beam and foam layers located at the two ends of the airfoil main beam, the airfoil is of a structure which is thick in the middle and thin at the two ends on the whole, the airfoil main beam and the foam layers are wrapped with a layer of airfoil skin, and the airfoil main beam and the airfoil handle are connected in an inserted mode and fastened through a binder and a bolt; a weight reduction structure is designed in a non-bearing area of the wing handle, so that the overall weight of the structure is reduced; the modulus of the high-modulus carbon fiber main beam can reach 200Gpa, so that the deformation in a bearing state is effectively controlled, and the structural modal of the airfoil is improved; the high-modulus carbon beams and the wing handles are connected in an inserted mode, bonded through epoxy glue and connected in a fastened mode through bolts, and the bearing force of the wing surfaces is effectively transmitted to wing handle connecting points; the outer skin of the airfoil is made of high-strength carbon fiber one-way material, the laying direction and number of fibers are designed according to calculated stress, the 0-degree fiber direction, the 90-degree fiber direction and the + / -45-degree fiber direction are configured, and the torsional strength of the airfoil is improved on the premise that the bearing requirement is met.

The invention relates to the technical field of gravel conveying, and discloses a gravel feeding device in color stone metal tile production, which comprises a screw type gravel conveying mechanism and a hydraulic telescopic spacing adjusting mechanism, a hydraulic hollow cylinder which is fixedly mounted on one side of the inclined conveying pipe and is internally in a hollow state, a piston plate which is positioned in the hydraulic hollow cylinder and generates inclined upward movement after being subjected to hydraulic pressure, and a second polygonal limiting rod which moves along with the piston plate and can drive the driving motor to axially move are arranged in the second polygonal limiting rod. According to the gravel feeding device in color stone metal tile production, gravel can be driven to be conveyed to a high position from a low position through the obliquely-arranged screw rod, so that the height difference feeding function is achieved, in addition, the contact amount of the screw rod and the gravel in the feeding port area can be adjusted according to the gravel storage amount, and the feeding efficiency is improved. Therefore, the torsion strength required by the screw during rotation is adjusted, and the effective protection capability of the driving motor is improved.

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.

This invention discloses a winding correction device for alloy wire stranded wire, relating to the technical field of alloy wire stranded wire production equipment. It includes a frame, with a frame between two main shafts. Rotary disks are fixedly mounted on the main shafts on both sides of the frame, and a stranding bow is installed between the two rotating disks. Both ends of the frame are rotatably connected to the main shafts. A twisting assembly is provided at both the inlet and outlet ends of the stranding bow, applying a torsional force to the wire passing through it. It also includes a detection unit configured to correct the torsional strength of the stranded wire based on the detected torsional torque of the wire through the twisting assembly. By incorporating a winding correction device including a twisting assembly and real-time monitoring of the wire torsional torque by the detection unit, the technical problem of traditional equipment being unable to control the tension of the stranded wire is effectively solved, significantly improving the quality of the stranded wire product.

According to the testing device, a to-be-tested battery pack is installed on a second support, a first support restrains the second end of the second support, and the second end of the second support has the freedom degree of rotating around the long axis of the second support. During testing, the first bracket applies two load forces in opposite directions to the second bracket, so that the second end rotates around the long axis of the second bracket, and the to-be-tested battery pack mounted on the second bracket is subjected to a torsion force along with the rotation of the second bracket, thereby performing a torsion test on the to-be-tested battery pack. The working condition of the to-be-tested battery pack on the non-paving road is accurately reproduced, whether the torsional strength of the to-be-tested battery pack can meet the working condition requirement or not is evaluated, and then the reliability of the strength safety design of the to-be-tested battery pack can be accurately evaluated.

The present application relates to a kind of composite material tensile-torsional strip curing tool and assembly curing method, including lower template (1), core mould (2), stopper assembly, plug (4), upper cover plate (5) and gasket (7);The upper cover plate covers the plug and left and right slider, extrusion force is applied to upper cover plate and lower template, the overall fixation of tool can be realized;The gasket is used to be set between lower template and lower tensile-torsional plate, between upper and lower tensile-torsional plate and intermediate tensile-torsional plate, and between upper tensile-torsional plate and upper cover plate.The composite material tensile-torsional strip assembly tooling of the present application is simple in structure, easy to operate, the tensile-torsional strip prepared is significantly lighter in weight, and torsion, strength, wear resistance and other performances are excellent, meet the requirements.

The invention discloses an anti-deformation plate and a preparation method thereof.The anti-deformation plate comprises an upper reinforcing layer, a honeycomb core layer and a lower reinforcing layer which are sequentially stacked from top to bottom, the anti-deformation plate further comprises an adhesive layer, the honeycomb core layer comprises a plurality of first hexagonal reinforcing frames distributed alternately, and honeycomb stabilizing cavities are formed in the first reinforcing frames; a first cross connecting plate, a second cross connecting plate and a third cross connecting plate are arranged in the middle of the honeycomb stabilizing cavity, the first cross connecting plate, the second cross connecting plate and the third cross connecting plate are connected in a cross mode to form a plurality of triangular compression-resistant units, first reinforcing ribs arranged in parallel are embedded in the upper reinforcing layer, and second reinforcing ribs arranged in parallel are embedded in the lower reinforcing layer. And the honeycomb core layer is bonded with the upper reinforcing layer and the lower reinforcing layer through modified adhesive layers. A plurality of crossed connecting plates are arranged in the honeycomb core layer to form the triangular compression-resistant units, the design of the reinforcing ribs is combined, so that the torsional strength of the plate is greatly improved, and the local buckling critical load is improved to two times that of a conventional honeycomb structure through the triangular compression-resistant units.

The utility model discloses a damping spring testing device, and belongs to the field of damping spring test.The damping spring testing device comprises a base, a lower clamp is fixedly connected to the top of the base, an upper clamp is arranged above the lower clamp, a twisting assembly is arranged on the upper clamp, and the twisting assembly comprises a top plate; a motor is fixedly connected to the bottom of the top plate, a rotating plate is fixedly connected to the output end of the motor, a swing plate is hinged to the outer side of the rotating plate, a first sliding block is hinged to the rear end of the middle of the swing plate, a fixing frame is slidably connected to the rear end of the first sliding block, and a supporting block is fixedly connected to the top of the fixing frame. According to the damping spring testing device, by arranging the twisting assembly, the torsional strength of the damping spring can be tested, the accuracy of damping spring detection is improved, and the function of the damping spring testing device is more perfect.

A golf shoe with an upper and a sole assembly connected to the upper. The sole assembly includes a midsole and an outsole. At least one of the midsole or outsole comprises (i) a foamed material and (ii) a structure integrated with or embedded in the foamed material. The structure comprises a different material than the foamed material. The structure comprises a spineless structure with one or more members extending between a medial side and a lateral side of the midsole or the outsole to enhance a lateral support and a torsional strength or stiffness of the midsole or outsole. The structure has a shape or profile that is different than a shape or profile of a bottom of a subject's foot.

Vehicle. The vehicle (100) includes a left front longitudinal beam (111) and a right front longitudinal beam (112), the left front longitudinal beam (111) and the right front longitudinal beam (112) being spaced apart in the vehicle width direction; a left A-pillar (131) and a right A-pillar (132), the left front longitudinal beam (111) being connected to a lower section of the left A-pillar (131) and the right front longitudinal beam (112) being connected to a lower section of the right A-pillar (132); a windshield upper cross beam (14), two ends of the windshield upper cross beam (14) being respectively connected to an upper section of the left A-pillar (131) and an upper section of the right A-pillar (132); and a battery pack (16), a front end portion of the battery pack (16) being directly connected to each of the left front longitudinal beam (111) and the right front longitudinal beam (112). The left front longitudinal beam (111), the right front longitudinal beam (112), the left A-pillar (131), the right A-pillar (132), the windshield upper cross beam (14) and the battery pack (16) form a first A-pillar annular force transmission structure (1), thereby improving the structural strength of the front end portion of the vehicle and being able to improve the torsional strength of the vehicle.

The invention belongs to the field of automobile part detection, and particularly relates to automobile reinforcer strength testing equipment which comprises a bottom frame, a detection box, a sliding door and the like. The underframe is fixedly connected with a detection box; the front side and the rear side of the detection box are slidably connected with a plurality of sliding doors. By adopting the device, the situation that the two sides of the reinforcer are stressed unevenly and are twisted in the actual use process is simulated, the torsional strength of the reinforcer is tested, on the other hand, the reinforcer can be extruded with the fixing bolt and the mounting plate, the situation that the reinforcer is extruded at the fixed position due to uneven stress in the actual use process is simulated, and the torsional strength of the reinforcer is tested. Therefore, the strength of the bolt fixing part of the reinforcer is tested in a targeted manner, the testing comprehensiveness is improved, and the problem that the detection result is greatly limited when the compressive strength of the reinforcing plate in an ideal state is detected only through a strength detector is solved.

The invention relates to the technical field of detection equipment, and discloses transmission shaft static torsion strength detection equipment for a new energy automobile, which comprises a base table, a torsion engine base and a detection engine base are mounted at the top of the base table, and the transmission shaft static torsion strength detection equipment comprises a torsion transmission mechanism used for coaxial and non-coaxial torsion transmission; the torsion transmission mechanism comprises a universal coupling, a supporting disc assembly, a movable end block and a lifting position adjusting mechanism, a shaft adjusting penetrating groove is formed in the center of the supporting disc assembly, the movable end block penetrates through the shaft adjusting penetrating groove and is slidably connected in the shaft adjusting penetrating groove in a sleeved mode, the lifting position adjusting mechanism is arranged in the supporting disc assembly, and the output end of the lifting position adjusting mechanism is in butt joint with the movable end block. The torsion transmission mechanism is arranged, through cooperation of the universal coupling, the supporting disc assembly, the shaft adjusting penetrating groove, the movable end block and the lifting position adjusting mechanism, the angle of the transmission shaft detection piece can be changed, torsion is output to the transmission shaft, and the detection device is applied to static torsion strength detection of the transmission shaft in the coaxial state and the non-coaxial state.

The invention discloses an electric automobile swing arm assembly which comprises a swing arm body, the swing arm body is provided with three extending connecting arms, the extending connecting arm on the outer side is used for fixing a ball head assembly, the two extending connecting arms on the inner side are used for fixing bushings, and the middle area of the swing arm body is larger than the extending connecting arms. The outer side edge of the swing arm body is provided with an outward turning structure, and the swing arm body is provided with an inward turning structure corresponding to the inner side edge between the two extending connecting arms of the fixed bushing. The swing arm assembly of the electric vehicle is reasonable in structural design, the size of the connecting arm relatively extending out of the middle area of the swing arm body is relatively large, the swing arm body is provided with the through integral convex rib, the outer edge is of an outward turning structure, the inner edge is of an inward turning structure, and the inner connecting plate is arranged in the swing arm body, so that the integral structural strength of the swing arm assembly is effectively improved; especially torsional strength.

The utility model provides a frame torsional strength test platform, which belongs to the electric vehicle frame torsional test field and comprises a bottom plate and a frame, the frame is arranged in the bottom plate, and the top of the bottom plate is provided with a test mechanism for testing the torsional strength of an electric vehicle frame. The bottom of the bottom plate is provided with a guide assembly for preventing chippings from flying around when the test fails. According to the utility model, through the arranged testing mechanism, the torsion strength of the frame is tested, and the problems that in the prior art, only a fatigue test can be carried out on the frame, how the torsion strength of the frame cannot be known, the torsion strength of the frame is one of essential detection steps, and if a torsion strength test is lacked, the torsion strength of the frame cannot be known are solved. And potential safety hazards are caused when the frame is used.

The utility model relates to the technical field of automobiles, and discloses a rear wall assembly of a vehicle and the vehicle, the rear wall assembly comprises tail columns which are symmetrically arranged at the tail of the vehicle, each tail column comprises a cavity structure and a function integration structure, the cavity structures are arranged in the longitudinal extension direction of the tail columns, and the function integration structures are arranged in the longitudinal extension direction of the tail columns; the function integration structures are located between the adjacent cavity structures in the horizontal direction. The rear enclosing plate is located between the tail columns, and the rear enclosing plate is fixedly connected with the tail columns; and the cross beam structure is arranged on the rear enclosing plate, and the cross beam structure is fixedly connected with the rear enclosing plate. According to the rear wall assembly of the vehicle, the tail column with the cavity structure and the function integration structure is matched with the rear wall plate and the cross beam structure, a stable frame is constructed, the torsional strength of the vehicle body and the sinking resistance of the rear wall are improved, driving safety is guaranteed, meanwhile, the space utilization rate is optimized, and multiple use requirements are met.

The invention discloses a brake disc static torsional strength testing device which is characterized in that a torsion loading system and a measuring system for detecting torque are respectively arranged at two ends of a test bed; the brake disc static torsional strength testing tool comprises an active force application end tool assembly fixedly installed with the torsion loading system and a passive force application end tool assembly fixedly installed with the measuring system, a torsion end flange seat is fixedly installed with the torsion loading system, and a flange seat brake disc connecting piece is fixedly connected with the torsion end flange seat and a brake disc to be tested; the fixed end mounting flange seat is fixedly mounted at the mounting end of the measuring system; the fixed beam flange seat connecting piece is fixedly connected with the fixed end mounting flange seat and the fixed beam respectively; bolt mounting holes are formed in the brake disc body, the centers of the bolt mounting holes are located on the circle of the effective brake radius of the brake disc, and connecting bolts penetrate through the bolt mounting holes to fix the brake disc and the fixing beam. According to the device, the torque transmission path is simplified, the testing precision, efficiency and reliability are improved, and the high braking deceleration requirement is met.

The invention discloses a three-dimensional woven rectangular composite material continuous rod, a preparation mold and a preparation method.The composite material continuous rod is formed by compounding a resin matrix material and a fiber structure, and the fiber structure comprises an inner layer rod body and an outer layer wrapping the inner layer rod body; the inner-layer rod body is a three-dimensional fiber rectangular rod manufactured through a three-dimensional weaving technology, and the outer layer is a two-dimensional fiber weaving layer. The fiber structure of the three-dimensional woven rectangular composite material continuous rod comprises the three-dimensional inner-layer rod body and the two-dimensional woven layer on the outer side, the abrasion resistance of the rod body can be effectively enhanced, and the service life is prolonged; through the improvement of two sections of S-shaped cavity runners and double glue injection holes of the glue injection mold, dynamic glue dipping is realized, the porosity is reduced, the mechanical property of a product is ensured, the problems of layering and cracking are avoided, and the torsional strength and the shear strength are improved.

The off-highway front oil gas O-shaped stabilizing beam structure comprises oil gas cylinder supports on the two sides of a vehicle frame and an oil gas cylinder with the upper end hinged to the oil gas cylinder supports and the lower end hinged to the corresponding end of a front axle, and the upper end faces of the two oil gas cylinder supports are fixed to a cab rear suspension and a platform rear suspension in a bolted mode respectively. The two lower ends of the upper stabilizing beam are fixedly connected with the inner end face of the cab rear suspension and the inner end face of the platform rear suspension in a horizontal bolting mode respectively, a lower transverse pushing beam located between the two oil-gas cylinder supports is arranged above the front axle, and the two ends of the lower transverse pushing beam are fixedly connected with the oil-gas cylinder supports in a bolting mode respectively. The upper stabilizing beam, the lower transverse pushing beam and the oil and gas cylinder supports on the two sides form an O-shaped beam with high bending rigidity and torsional strength. According to the utility model, the problems of poor bending rigidity and torsional rigidity of the front ends of the existing flexible frame and rigid frame are solved, the bending rigidity and torsional rigidity of the front ends of the flexible frame and rigid frame are improved, the adverse effect of larger torsional deformation of the front ends of the frames on the suspension is avoided, the safety is reliable, weld cracking is avoided, and batch production is realized.

The utility model provides a motorcycle frame and a motorcycle, and belongs to the technical field of motor vehicles, the motorcycle frame comprises a frame front section, a frame middle section, a frame rear section, an auxiliary frame and a rear mudguard support which are sequentially connected from front to back; the two frame middle sections are connected between the frame front section and the frame rear section in a bilateral symmetry mode to form a front closed-loop frame. The two auxiliary frames are connected between the rear frame section and the rear fender support in a bilateral symmetry mode to form a rear closed-loop frame. The frame rear section is provided with a closed-loop hollow cavity. According to the motorcycle frame, all parts are high in integrity and small in number, so that welding seams are small, the overall structural strength of the motorcycle frame is improved, the dead weight of the motorcycle frame is reduced, and the control stability and the dynamic property of the whole motorcycle are improved; the whole frame is composed of three closed-loop frames from front to back, the torsional strength and rigidity of the whole frame are greatly improved, and therefore the dynamic property of the whole vehicle and the driving comfort are improved.

The utility model discloses a strong shock-resistant cutter cylinder for a boring machine, which comprises a cutter sleeve, one end of the cutter sleeve is fixedly provided with a connecting flange, the other end of the cutter sleeve is fixedly provided with a cutter rest seat, the cutter sleeve is of a hollow steel pipe structure, the anti-bending section coefficient conforms to the following formula: pi (D4-d4) / 32D, D is the outer diameter of a steel pipe, d is the inner diameter of the steel pipe, and D is the outer diameter of the steel pipe. The utility model relates to the technical field of machining, the cutter sleeve adopts a hollow steel pipe structure, the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D, and compared with solid round steel with the same diameter, under the condition that the anti-bending strength and the anti-torsion strength are the same, the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D, and the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D. The steel pipe not only has better bending resistance, but also is lighter in weight, so that the overall weight is effectively reduced while the machining strength of the cutter cylinder is guaranteed, the load pressure of a machine tool spindle is reduced, and the stability in the machining process is improved.

The powder metallurgy one-way clutch outer ring comprises an outer ring body, a cavity used for concentrically arranging an inner ring is formed in the inner side of the outer ring body, and a plurality of limiting grooves are evenly formed in the inner wall of the outer ring body in the circumferential direction; a first limiting part used for installing an elastic piece and a second limiting part used for installing a ball are arranged in the limiting groove, the working face of the ball limiting part is a curved surface, the curved surface is of an eccentric arc structure or a cycloid arc structure or an Archimedes spiral structure, and the distance between the curved surface and the inner ring is gradually reduced in the clockwise direction. The elastic pieces drive the balls to be attached to the curved surfaces and the outer wall face of the inner ring in the natural state. According to the powder metallurgy one-way clutch outer ring and the manufacturing process thereof, the die wall lubricating or warm die pressing forming process is combined with the surface densification process, the torsional strength and the surface contact strength of the outer ring are improved, meanwhile, the abrasion resistance of a working part is improved, the service life is prolonged, and therefore the actual use requirement is met.

The invention provides drilling and tapping equipment for machining a motor shell, and relates to the technical field of drilling and tapping, and the drilling and tapping equipment comprises a multifunctional linkage mechanism and a liquid pressure intensity control mechanism, the flow guide sleeve is installed at a shaft body of the hollow rotating shaft through a bearing and a sealing ring and is of a hollow structure, the movable valve plate is placed in the flow guide sleeve and can control the flowing state of liquid, and the second spiral spring generates an elastic damping effect on the movable valve plate. The drilling and tapping device can be matched with a hydraulic system to work, drilling and tapping work can be conducted on a motor shell, in addition, liquid in the same direction is used for conducting the axial supply function and the rotation transmission function on a drill bit or a screw tap, and therefore the effective utilization rate of a power source is increased; and the function of controlling the torsional strength is achieved, so that the phenomenon of fatal damage of the drill bit or the screw tap caused by torsional resistance overload is prevented.

The present invention discloses a road strength testing device, which belongs to the field of road testing technology. The device comprises a base and a sample to be tested. Two mounting seats are symmetrically arranged on the base. The opposite ends of the mounting seats are rotatably connected with support shafts horizontally facing the corresponding ends of the sample. The ends of the support shafts are provided with clamping assemblies for clamping the ends of the sample. The mounting seats are provided with power assemblies for driving the corresponding support shafts to rotate. The base is also provided with a bracket. The top end of the bracket is vertically provided with a hydraulic cylinder facing the sample. The output end of the hydraulic cylinder is provided with a clamping assembly. Pressure sensors are provided on the clamping assembly and the clamping assembly. The purpose is to solve the composite test of the torsional strength and compressive strength of road concrete.

The utility model discloses a helicopter composite material transmission system, and relates to the field of transmission devices. The helicopter composite material transmission system comprises a machine shell; the number of the gears is at least two, the gears are sequentially connected in a power transmission mode, the gears are arranged in the machine shell, and the gears comprise an input gear and an output gear. At least one gear is a compound gear, and the compound gear comprises an axis supporting part which is a carbon fiber piece; the metal gear ring is connected with the axis supporting part, the metal gear ring and the axis supporting part are coaxially arranged, and gear teeth distributed at intervals in the circumferential direction are arranged on the metal gear ring; the axis supporting part and the metal gear ring are fixedly connected and rotate synchronously. The metal gear ring is adopted to provide high hardness and wear resistance for meshing transmission, the reliability during high torque transmission is ensured, the carbon fiber piece is adopted as the axis supporting part to obtain torsional strength, and meanwhile the weight of the coincident gear is reduced. Therefore, flight burden of the helicopter can be reduced, and flight energy consumption is reduced.

The utility model discloses an anti-twist jumping-out mechanism for a cylinder belt, which relates to textile after-finishing equipment and comprises depended wheel components and a belt jumping-out prevention component, the depended wheel components are symmetrically arranged on two sides of the cylinder belt, and the belt jumping-out prevention component is fixed on a cylinder swing arm; a bearing and a depended wheel mandrel are arranged in the depended wheel, and the two ends of the depended wheel mandrel are fixedly connected with the upper pressing plate and the lower pressing plate through fixing bolts; the belt jumping-out prevention assembly comprises a rocker arm, a pressing wheel assembly, a guide sleeve and a fixing shaft, the inner arc of the rocker arm is matched with the diameter of a cylinder driving belt wheel, the pressing wheel assembly comprises two pressing wheels and a connecting plate, bearings and eccentric shafts are arranged in the pressing wheels, the two ends of the connecting plate are fixed to the eccentric shafts respectively, and the other ends of the eccentric shafts are fixed to the rocker arm. The torsional strength of the depended wheel assembly is improved, stress deformation is prevented, and it is guaranteed that a belt runs stably; and a belt jumping-out prevention assembly is additionally arranged, and the belt is pressed through a pressing wheel, so that the belt is effectively prevented from jumping out of a belt groove.

A high-torque threaded connection is provided with male and female thread forms consisting of wedge threads with high shear strength and high torsional strength. The radius of curvature r1 of the base of the load flank of the first thread 111, located at the end of the male thread form 11 associated with the tip, is not less than the thread height Th×0.14, and more preferably not less than Th×0.16, to improve the shear strength of the first thread 111.In addition, the thread pitch can be reduced to increase the number of threads to increase the contact area for load flanks, or only the radius of curvature of the base of the load flank of the first thread located at the end of the male thread form associated with the tip can be increased, and a smaller curvature diameter can be provided for the other portions in order to increase the contact area for the load flanks, thus maintaining high resistance to torsional stress.

The utility model relates to the technical field of brake, concretely is a kind of high bearing brake bottom plate, it mainly includes, connecting unit includes the connecting block of fixed setting on the bottom plate main body, the receiving hole for connecting brake device is opened to the connecting block, first connecting plate is fixedly arranged on the bottom plate main body, second connecting plate is fixedly arranged on the first connecting plate), through hole is fixedly arranged on the bottom plate main body, and multiple the through hole between each other evenly arranged, the spacing between adjacent two the through hole is same, the connecting unit is used to connect the bottom plate main body and brake device, by fixedly setting first connecting plate and first connecting hole on bottom plate main body, on the one hand, the overall torsional strength of bottom plate main body can be improved, on the other hand, the connecting strength between first connecting plate and bottom plate main body can be increased, prevent first connecting plate from breaking, first connecting plate torsional resistance can also be increased, improve use safety.