49results about How to "Big corner" patented technology

A bone screw having a screw member possessing a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw is provided. The receiving part has on open first bore and a substantially U-shaped cross-section having two free legs provided with a thread. Furthermore, the receiving part has a second bore on the end opposite to the first bore whose diameter is greater than that of the threaded section and smaller than that of the head. On the bottom of the first bore a seat for the head is provided. In order that the screw member can be pivoted to at least one side by an enlarged angle, the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of asymmetric construction.

A numeral lock housing structure including a lock housing composed of two halves mated with each other. Each of the halves is formed with at least one lateral face and a front face forward extending from the lateral face. Two edges of the front faces form two mating edges mated with each other. A corner section between the lateral face and the front face of at least one of the two halves is formed with at least one numeral wheel window. At least one numeral wheel is mounted in the numeral wheel window for controlling a lock bolt to lock/unlock the numeral lock. The numeral wheel window extends into the front face without crossing the mating edge thereof. Therefore, the mating edges of the two halves of the lock housing will not be slotted so that the structure of the front face of the lock housing is kept integrated. The numeral wheel is positioned between the lateral face and front face so that the numeral wheel has larger turning angle each time the numeral wheel is turned.

The invention relates to a redundant drive five degrees of freedom parallel machine tool with a large rotation angle. The redundant drive five degrees of freedom parallel machine tool with the large rotation angle includes a fixed platform, a movable platform for installing a main shaft head and a first driving branch, a second driving branch, a third driving branch and a fourth driving branch forconnecting the fixed platform and the movable platform, the structures of the first driving branch and the second driving branch are similar, and the first driving branch includes a hooke hinge, a servo driving unit, a revolute pair and a compound sphere hinge; the third driving branch includes a hooke hinge, a servo driving unit and a compound sphere hinge, the fourth driving branch includes a revolute pair, a servo driving unit, a hooke hinge and a revolute pair, and the movable platform of a machine tool and the four driving branches are hinged to form a space closed-cycle parallel mechanism; and the three-dimensional translation and the two-dimensional rotation of the space can be achieved by controlling six servo motors to drive the four branches. The redundant drive five degrees offreedom parallel machine tool with the large rotation angle has the advantages that the branch structures are simple and compact, the orientation workspace is large, the flexibility is high, the rigidity is large, and the singular configuration can be prevented, and can be used for high-speed, high-precision and efficiency machining for free-form surface in complex space.

The invention relates to a bridge support and belongs to the technical field of bridge construction. The bridge support comprises an upper support plate and a lower support plate. A middle lining plate is slidably connected to the upper support plate, located below the upper support plate and slidably connected with the lower support plate through a spherical cap lining plate. The upper portion of the spherical cap lining plate is connected with the middle lining plate through a first buffer rod and located in an upper spherical face installation hole of the lower portion of the middle lining plate. The lower portion of the spherical cap lining plate is located in a lower spherical face installation hole of the upper portion of the lower support plate. The bridge support has the advantages that the external action force applied to a bridge can be counteracted through a larger rotating angle and higher rotating capacity, and the problem that acting force is directly transmitted to a bridge body due to the fact that the rotating angle of the support is limited, and accordingly, damage to the bridge is unrepairable can be solved.

An axle assembly for a vehicle includes an axle having opposite axle ends and a pair of axle hubs. The axle assembly has a pair of double kingpin hinge arrangements, each including a first pivot pin connected with a respective one of the axle ends, a second pivot pin operatively associated with a respective axle hub, and a knuckle interconnecting the first pivot pin and the second pivot pin. At least one steering cylinder is associated with each double kingpin hinge arrangement. Each steering cylinder is interconnected between the axle and the knuckle or the axle hub.

The invention relates to a visual characteristic defogging and image stabilizing detection system including the following modules and functions. First, image data is input into a fog feature analysisand enhancing module and an enhanced image and a correction parameter 1 are acquired through calculation. Second, the enhanced image is input to a multi-level parameter feedback control based object detection system module which calculates out the position of a to-be-detected object through detection and recognition and outputs a target displacement and a correction parameter 2. Third, an image stabilizing displacement calculating module outputs image stabilizing displacement to an image stabilizing flyback integrated control platform. Fourth, the image stabilizing flyback integrated control platform implements an image stabilizing function according to the image stabilizing displacement and adjusts sensor integral time according to the correction parameter 1 and the correction parameter 2. According to the invention, the system implements functions of visual characteristic analysis based defogging enhancement, photoelectric mechanical integrated image stabilization, detection, tracking and the like, achieves good definition, good stability and good accuracy and can be embedded into target detection systems of different types.

The invention relates to a five-degree-of-freedom redundant driving parallel mechanism with a large turning angle. The mechanism comprises a fixed platform, an articulated moving platform, and a rotating mechanism; the fixed platform and the articulated moving platform are connected with each other through first, second, fifth and sixth driving branch chains; the fixed platform and the rotating mechanism are connected through third and fourth driving branch chains; the first, second, five, and sixth driving branch chains can drive the articulated moving platform to flip back and forth and translate left and right; and the linkage between the first, second, five, and sixth driving branch chains and the third and fourth driving branch chains can drive the articulated moving platform to moveup and down, rotate horizontally, and flip left and right. The mechanism has strong adjustment ability, large turning angle and high flexibility, and can perform local processing of super large and complex curved surfaces.

The invention discloses an elliptical six-degree-of-freedom parallel connection mechanism which comprises six drive rods, a static platform and a dynamic platform, wherein the dynamic platform is connected to the static platform through the six drive rods; the drive rods are connected with the static platform through lower hinges and connected with the dynamic platform through upper hinges; the six lower hinges connecting the drive rods with the static platform are distributed on a circumference or an elliptical circumference; and the six upper hinges connecting the drive rods with the dynamic platform are distributed on an elliptical circumference. By arranging the hinge points between the dynamic platform and the drive rods, namely the upper hinges, on an elliptical circumference, the elliptical six-degree-of-freedom parallel connection mechanism enables the drive rods to obtain a relatively large turning angle in the direction of the major axis of the elliptical circumference.

The invention provides a circuit breaker, which comprises a moving contact, a static contact, a rotation shaft and an operation mechanism, wherein the moving contact can rotate around the rotation center of the rotation shaft relative to the static contact, and through contact or breaking between the moving contact and the static contact, connection or disconnection of the circuit is realized; the operation mechanism comprises an upper connection rod, a lower connection rod and a handle, the upper connection rod is set to rotate around one end of the upper connection rod under the driving effects of the handle, the other end of the upper connection rod is connected onto one end of the lower connection rod in a rotary mode through a connection rod hinging shaft, the other end of the lower connection rod is hinged with the rotation shaft, the rotation shaft can be driven to drive the moving contact to rotate, the working length of the upper connection rod and the working length of the lower connection rod, and the working length of the upper connection rod and the distance between the hinging point between the lower connection rod and the rotation shaft and the rotation center of the rotation shaft have predetermined proportion relationships, the rotation angle of the moving contact formed after the moving contact and the static contact are disconnected is larger than 30 DEG, and the purpose of improving the breaking ability of the circuit breaker is realized.

The invention relates to a unidirectional rotating device and belongs to the field of mechanical transmission. The unidirectional rotating device for achieving a large rotating angle and a high torque is characterized in that the unidirectional rotating device comprises a gear arranged in the middle, the two ends of the gear are each coaxially connected with a one-way bearing through a coupling part, the outer diameter of the gear is smaller than the outer diameter of each one-way bearing, and the two one-way bearings are stressed in the same direction; and the axis of the gear is hollow, a center connecting shaft of the two one-way bearings penetrates through the axis of the gear in a non-contact mode, and thus the two one-way bearings are coaxially connected. According to the unidirectional rotating device, through the structural form that the large-diameter one-way bearings are coaxially installed at the two ends of the small-diameter gear in the middle, excursion displacement is converted into large-rotating-angle rotating displacement through the small-diameter gear, the high torque is shared since the large-diameter one-way bearings at the two ends are stressed in the same direction, and thus large-rotating-angle and high-torque unidirectional rotation is achieved.

The invention discloses a bridge support which comprises a lower support plate, a steel liner plate and an upper support plate. A protruding part is arranged in the middle of a lower spherical surface. A first spherical crown protruding upwards is arranged at the top end of the protruding part, the steel liner plate is a second spherical crown with the upper surface being a cut plane, a central blind hole is formed in the middle of the crown part of the second spherical crown, the hole type of the central blind hole is a spherical hole and the central blind hole is provided with an upper spherical surface. The spherical surface of the crown part of the second spherical crown is matched with the lower spherical surface to form a first spherical surface friction structure. The upper spherical surface is matched with the first spherical crown to form a second spherical surface friction structure. The lower surface of the upper support plate is matched with the cut plane. The bridge support is strong in slipping capacity and high in stability.

The invention relates to a single bolt driving dual oscillating milling head. The No.1 controllable generator fixed with No.1 cylinder gear through No.1 coupler, No.2 cylinder gear fixed with the cover of the milling head cover, whose top cover and a pair of milling sleeve side cover fixed with the milling head sleeve, No.2 controllable generator installed on the bracket that fastened inside the milling head sleeve. Three pairs of linking brackets and two pairs of linkages set symmetrically at both sides of the electric main shaft of the milling head. The drive shaft fixes with the second controllable generator through the second coupler and fixed with the first pair of linking bracket. The first pair of linkage and the first pair of linking bracket or the second pair of linking bracket, the second pair of linkage and the second pair of linking bracket or the second pair of linkage and the third pair of linking bracket to form into rotating assistance respectively. The second and the third linking bracket connect to the milling head sleeve respectively, with the third linking bracket fixed with the main shaft of the milling head. It solves the issue of big size, low rigidity and poor bearing ability of the dual oscillating milling head.