13 results about "Axial force" patented technology

A steering angle estimation section calculates a front-wheel-side estimative steering angle and a rear-wheel-side estimative steering angle through use of wheel speeds of respective wheels, and averages these steering angles to thereby obtain an accurate estimative steering angle. It also calculates an estimative steering angle difference between the steering angles. An axial force estimation section calculates a base axial force through use of the estimative steering angle and a vehicle speed, and calculates a correction axial force which applies an axial force difference (hysteresis) to the base axial force in accordance with a turning or returning operation by a driver. The axial force estimation section adds the base axial force and the correction axial force together to thereby calculate an accurate estimative axial force. An assist computation section compares a target steering torque, which changes with the vehicle speed, and the accurate estimative axial force, and subtracts the target steering torque from the estimative axial force, to thereby calculate an assist torque.

An automatic cover-opening device has a body, at least one cover panel and a recoil mechanism. The body has an insertion hole defined in the body. The at least one cover panel is mounted on the body and moveably closes the insertion hole. Each one of the at least one cover panel has a guiding segment having at least one guiding edge inclined relative to an axis of the insertion hole to guide an axial force along the axis of the insertion hole to a lateral direction non-parallel with the axis, so as to generate a lateral component force for opening the at least one cover panel. The recoil mechanism is disposed on the body to push the at least one cover panel to a closed position for closing the insertion hole. With such an arrangement, an automatic cover-opening device that can be applied for insertion of a rod-like object is provided.

The invention discloses a firefly algorithm-based novel dot matrix structure obtaining method. The method comprises the following steps of s1: establishing a base structure of a dot matrix structure;and s2: establishing a mathematic model taking a section area of a bar unit in the base structure as a design variable, taking an axial force of a bar member as a constraint function and taking a minimum volume as an evaluation function, and obtaining an optimal dot matrix structure under a certain constraint condition by adopting a firefly algorithm. According to the method, a simulated molecularconfiguration is not adopted for manufacturing a porous material, and a base structure method is adopted as a topology generation method of a bar system structure to be combined with the firefly algorithm to finish structure topology optimization, so that a lightweight and high-strength dot matrix material is obtained.

The invention discloses a vehicle oxygen sensor which comprises an oxygen-sensitive chip, a lead, a lead terminal, a chip cover component and a hexagonal base shell, wherein the chip cover component and the hexagonal base shell are sequentially connected from front to back, front and rear sections of counterbores are formed in a hexagonal base; a transition section between the two sections of counterbores is made into a chamfered conical surface; an elastic washer, a front support block, a sealing block and a rear support block are mounted sequentially from front to back in the two sections ofcounterbores; the front end surface of the sealing block is in contact fit with the chamfered conical surface; the hole edge of the rear section of counterbore closes inward to rivet the rear supportblock, and the rear support block is riveted to generate an axial force against the sealing block; a through hole leading to the inside of the chip cover component is formed in the bottom of the front section of counterbore; the oxygen-sensitive chip sequentially passes through the rear support block, the sealing block, the front support block, the elastic washer and the through hole and extendsinto the chip cover component. The vehicle oxygen sensor disclosed by the invention has good sealing property and other advantages.

The invention discloses a shear type metal damper. The shear type metal damper comprises a core plate, a lower connecting plate, a connecting sleeve and connecting pieces, wherein the connecting sleeve comprises an upper connecting plate and two wall plates, a plurality of position adjusting holes are formed in the wall plates, the connecting pieces penetrate through the position adjusting holes and the core plate, and gaps are formed between the connecting pieces and the position adjusting holes in the vertical direction. According to the shear type metal damper, the core plate is connected with the connecting sleeve through the connecting pieces, on the one hand, the connecting sleeve transmits shear force in the horizontal direction to the core plate through the connecting pieces, so that the core plate generates shear deformation, and on the other hand, when the damper is squeezed or stretched vertically, the core plate can generate relative displacement with the connecting sleevealong with the connecting pieces, so that the axial force is effectively released, the transmission of the shear force is not influenced, the adverse effect caused by vertical axial force is avoided,and the energy dissipation and damping capacity of the damper is improved, and the damper is used in the technical field of damping.

The invention relates to a multi-stage centrifugal pump axial force calculation method considering wear ring leakage, which solves the technical problem that the existing multi-stage centrifugal pump axial force calculation method cannot accurately calculate the axial force, and comprises the following steps of: calculating the axial force according to parameters such as the stage number N, the flow Q, the single-stage lift H, the rotating speed n, the impeller inlet diameter D1, the wear ring diameter Dm and the hub diameter Dh of a sectional multi-stage centrifugal pump; and the axial force FA borne by the pump is calculated by considering the wear ring leakage factor. The method is widely applied to the field of multi-stage centrifugal pump axial force calculation.

The invention discloses a technology for simultaneously identifying rigidity and axial force of a truss structure based on MATLAB-ABAQUS interaction conditions to evaluate structural damage and predict residual bearing capacity, belongs to the field of structural damage identification. The technology mainly comprises the following four steps: establishing a finite element model of a steel truss damage structure; modifying the inp file and establishing a finite element template file; inputting a real to-be-identified quantity and generating an inp file, and calculating and obtaining a corresponding node acceleration and rod strain; simulating the estimated response of the quantity to be identified; and continuously optimizing the to-be-identified quantity by using the target function untila convergence condition is met, and outputting a final result. The method has the main advantages that (1) while the rigidity of a certain rod piece of the steel truss is recognized, the axial force of the same rod piece can also be recognized; (2) the position of the sensor has no special requirement, and the sensor is not required to be installed on a rod piece needing axial force identification; and (3) the number of sensors is less. Therefore, the application prospect of the method is wide.

An axial piston machine (100) for operation as a pump and/or motor, has a housing (10), a drive shaft (20) and a piston drum (40). The piston drum (40) is connected to the drive shaft (20). The drive shaft (20) is mounted rotatably within the housing (10) by means of a first bearing (21) and a second bearing (22), wherein the first bearing (21) is in the form of a tapered-roller bearing and the second bearing (22) is in the form of a plain bearing. The first bearing (21) can absorb axial forces on the drive shaft (20) in a force direction from the second bearing (22) toward the first bearing (21). The drive shaft (20) is preloaded in said force direction. On a housing face side (11), facing toward the drive input and/or output, of the housing (10), there is arranged an abutment surface (12) which can interact with a run-on surface (15a), facing the abutment surface (12), of a drive input or drive output wheel (15) arranged on the drive shaft (20).

A supporting roller of a scale breaking withdrawal and straightening machine is used for the scale breaking withdrawal and straightening machine. A space ring is installed on a shaft, the two sides of the space ring are respectively provided with a needle bearing, an outer sleeve is arranged outside the space ring and the needle bearings in an interference fit mode, races are installed in the step position of an inner hole of the outer sleeve and on the two sides of the needle bearings, a thrust roller bearing and a shaft washer are sequentially fixed to the outer side of each race, an O-ring and a first sealing ring are installed between each shaft washer and the shaft, an O-ring and a first sealing ring are installed between each shaft washer and the outer sleeve, gaskets are arranged between the first sealing rings, check rings for holes are clamped in the step positions of the outer side of the inner hole of the outer sleeve, check rings for shafts for preventing the shaft washers from moving axially are fixed into positioning grooves of the shaft, and second sealing rings are installed in shaft shoulders of the shaft. Because the structural form that the needle bearings are used for bearing radial force, the thrust roller bearings are adopted at the two ends to bear axial force, and rigid sealing and rubber sealing are combined is adopted for the supporting roller of the scale breaking withdrawal and straightening machine, the supporting roller is good in manufacturing accuracy, rotation accuracy and abrasion resistance, high in stability in use and reliable in sealing, and meanwhile machining and assembling efficiency and assembling accuracy can be effectively improved.

The invention discloses a middle shaft structure of an exercise bicycle. The center shaft structure includes a left middle shaft, a right middle shaft, a limiting sleeve, locking bolts, a left side crank, a right side crank, a bearing sleeve, a rolling bearing and a main frame, wherein the bearing sleeve is connected into the main frame; the rolling bearing is mounted in the bearing sleeve; the left middle shaft is connected into the rolling bearing; the limiting sleeve is mounted between the left and right rolling bearings; the right side of the left middle shaft is connected with the right middle shaft; the locking bolts are installed in the left middle shaft and the right middle shaft; the left side of the left middle shaft is connected with the left side crank; the right side of the right middle shaft is connected with the right side crank; and the middle shaft can ensure that the phenomenon that locking nuts are loosened in the rotating process of the cranks is avoided, and axialforce between bearings is eliminated.

The invention provides a thin-film sputtering force transducer adapting to a lunar environment. The transducer comprises a connecting end, a wiring terminal seat (12), a lead pin (14), and an elastomer (16). The elastomer (16) being a Chiness-character-tu-shaped stepped cylindrical bench includes a thick cylindrical bench and a thin cylindrical bench. A terminal seat through hole is formed in the wiring terminal seat (12) along the middle axis; the thin cylindrical bench passes through the terminal seat through hole and is connected with one end of the connecting end for exerting an axial tensile force on the elastomer (16); and the thick cylindrical bench is fixedly connected with one end of the wiring terminal seat (12). A resistor strain gate graph film is sputtered on the end surface of the thick cylindrical bench of the elastomer (16); the resistor strain gate graph film includes four resistor bridge arms; and when the axial tensile force is exerted on the elastomer (16), the resistance values of the four resistor bridge arms are changed. The two ends of the four resistor bridge arms are connected with the external world by the lead pin (14), so that the differential voltage change is measured to obtain the axial force. The provided transducer is not easy to affect by the interference on the non-axial force and is suitable for large working temperature zone.