45results about How to "Change the degree of bending" patented technology

The invention belongs to the technical field of mechanical finger driving, and particularly relates to a simulated mechanical finger pulled on the basis of a steel wire. The simulated mechanical finger comprises four mechanical finger supports, the steel wire, reset springs, tension springs and the like. The mechanical finger supports are connected together through cylindrical pins to form the mechanical finger. The original vertical state of the mechanical finger is guaranteed in the manner that the reset springs are arranged on the back faces of the bent sides of the supports. The parts, on the bent sides of the supports, of the steel wire and the supports are connected through the tension springs. Due to the fact that the elastic coefficients of the designed three reset springs are different, the bending resistances of knuckles of the mechanical finger are different, and the mechanical finger can show the bending degree the same as the bending degree of the finger of a person. In addition, each support is driven in a manner that the steel wire is pulled by the corresponding tension spring, and by means of the tension springs, it can be guaranteed that when the mechanical finger grabs an object, the bending degree of the knuckles of the mechanical finger can be changed according to the shape of the object. Each mechanical finger is driven through single power, and the beneficial effects that the object grabbing adaptability is high, and the structure is simple are achieved.

An optical device may include a flat optical member; a reinforcement member which is bonded to a back side of the optical member and demonstrates stronger rigidity in a center area thereof than two side portions thereof when curved in a thickness direction in a first direction within an in-plane direction; and a driving device which switches a shape of the optical member together with the reinforcement member between a flat state and a curved state in which the optical member is curved in the first direction.

An intelligent spinal rehabilitation training device includes an upper limb crawling mechanism, an abdominal support mechanism and a lower limb twisting waist crawling mechanism arranged in sequence; The upper limb crawling block is equipped with handrails for human hands to grasp. The waist twisting and crawling mechanism of the lower limbs comprises a fan-shaped swing skateboard and a crank-rocker mechanism, and the crank-rocker mechanism is connected with the fan-shaped swing skateboard to drive the fan-shaped swing skateboard to swing left and right. Two fan-shaped moving blocks are embedded on the fan-shaped swinging slide plate, and calf supporting mechanisms are respectively installed on the two fan-shaped moving blocks. The invention realizes the switching between active training and passive training, and can realize various training modes of twisting and crawling in active and passive forms, such as crawling, kneeling and twisting, climbing high and twisting, and bending down.

The invention relates to a wheel structure and a vehicle with adjustable width and rigidity, comprising two inner wheels coaxially arranged, the inner wheels are provided with shaft holes, and the shaft holes are coaxially arranged with the inner wheels; The outer wheel is coaxially arranged, the wheel diameter of the outer wheel is larger than that of the inner wheel, and the two inner wheels are respectively arranged on both sides of the outer wheel; the inner wheel and the outer wheel are connected by a plurality of spokes, and the two ends of the spokes are respectively connected with The inner wheel and the outer wheel are hinged, and the spokes are arranged sequentially along the circumferential direction of the inner wheel. The spokes are arc-shaped plate structures, and the middle part of the spokes protrudes toward the direction away from the inner wheel; a linear telescopic mechanism is arranged between the two inner wheels , the linear telescopic mechanism can adjust the distance between the two inner wheels, and the spokes can change their own bending degree in the process of moving with the inner wheels, so as to change their own stiffness and wheel width.

The invention belongs to the technical field of mechanical arms and particularly relates to a multi-degree-of-freedom mechanical arm based on sequential control. The mechanical arm comprises three auxiliary mechanical fingers, a main mechanical finger, a palm plate, a motor driving mechanism, an arm sleeve and the like. The first auxiliary mechanical finger, the second auxiliary mechanical finger, the third auxiliary mechanical finger and the main mechanical finger are installed on the palm plate. The three auxiliary mechanical fingers have three bending degrees of freedom, the first auxiliary mechanical finger has one swing degree of freedom, the main mechanical finger has one bending degree of freedom and one swing degree of freedom, and six degrees of freedom are achieved in total. The motor driving mechanism with single-power sequential control is used for driving, so that the structure of the mechanical arm is greatly simplified, and high practicability is achieved.

A rehabilitation training device for spondylosis, comprising an upper limb crawling mechanism, an abdominal support mechanism and a lower limb crawling mechanism arranged in sequence; Handrails for human grasping are installed on the crawling slider; the lower limb crawling mechanism includes two lower limb crawling guide rails, and lower limb crawling sliders are respectively set on the two lower limb crawling guide rails, and a calf support mechanism is installed on the lower limb crawling slider. The invention realizes the switching between active training and passive training, and realizes the integration of various crawling training modes such as crawling crawling, kneeling crawling, climbing crawling, and prone style under active and passive forms. Driven by the power group, it moves independently to realize the control of exercise mode and intensity. The crawling mechanism of the lower limbs and the crawling mechanism of the upper limbs are separately foldable and connected, which reduces the volume of the instrument.

The invention belongs to the technical field of mechanical finger driving, and particularly relates to a simulated mechanical finger pulled on the basis of a steel wire. The simulated mechanical finger comprises four mechanical finger supports, the steel wire, reset springs, tension springs and the like. The mechanical finger supports are connected together through cylindrical pins to form the mechanical finger. The original vertical state of the mechanical finger is guaranteed in the manner that the reset springs are arranged on the back faces of the bent sides of the supports. The parts, on the bent sides of the supports, of the steel wire and the supports are connected through the tension springs. Due to the fact that the elastic coefficients of the designed three reset springs are different, the bending resistances of knuckles of the mechanical finger are different, and the mechanical finger can show the bending degree the same as the bending degree of the finger of a person. In addition, each support is driven in a manner that the steel wire is pulled by the corresponding tension spring, and by means of the tension springs, it can be guaranteed that when the mechanical finger grabs an object, the bending degree of the knuckles of the mechanical finger can be changed according to the shape of the object. Each mechanical finger is driven through single power, and the beneficial effects that the object grabbing adaptability is high, and the structure is simple are achieved.

The invention relates to a machine for producing knitted fabric, comprising a plurality of stitch-forming elements and at least one stitch-forming location (15, 15.1, 15.2, 15.3), with which is associated a spinning device (12, 12.1, 12.2, 12.3) which produces a fiber composite (FB) or a yarn from a roving (VG) and supplies the same to the stitch-forming elements (14), wherein each spinning device (12, 12.1, 12.2, 12.3) is provided with separate drive devices (30, 31, 30.1, 31.1, 30.2, 31.2, 30.3, 31.3) which can be controlled in such a manner that a fiber composite (FB) or a yarn of variable thickness can be produced by each spinning device (12, 12.1, 12.2, 12.3) from the roving (VG) and be fed to the stitch-forming elements (14).