8results about How to "Optimized load distribution" patented technology

The invention provides a wheel step type rotary drilling rig intelligent gait planning and cooperative control method and system, and the method comprises the steps: collecting the torque value of a drill rod, the rotation direction of the drill rod, the contact force deflection angle of each supporting leg steel claw, the leg vibration frequency, and the feeding speed and rotation speed of drilling operation; fourier transform is carried out on the torque value of the drill rod to obtain the torque fluctuation frequency of the drill rod; evaluating a phase angle between the rotation direction of the drill rod and the circumferential layout of the supporting legs, screening out leg positions with the phase angle exceeding a preset safety angle threshold value and vibration exceeding a limit, and adjusting the unfolding radius; identifying load concentration orientation distribution of each leg by taking the expansion radius adjustment amount of the supporting leg as an independent variable and the steel claw contact force deflection angle change rate as a dependent variable; gait scheduling arrangement, feeding speed and rotation speed are fused and optimized, a switching time window is divided according to the leg lifting and falling action period of each supporting leg, and feeding propulsion and rotation start-stop takt is matched in an alternating gap of adjacent supporting legs to form a cooperative control signal.

This utility model relates to the field of vehicle wheel hub bearings and discloses a lightweight wheel hub bearing unit assembly, including an outer ring sleeve (1) and an inner ring shaft (2). The lower end of the shaft (2) is integrally formed with a flange (3). Rollers are arranged between the outer ring of the shaft (2) and the inner ring of the sleeve (1) to form a bearing structure. A cover (4) is provided at the upper end of the sleeve (1), and the sleeve (1) extends to the root (5) of the shaft (2). The rollers include two sets, one set at the upper end of the shaft (2) and the other set at the root (5) of the shaft (2). The flange (3) has multiple fixing wings (6), and fixing holes (7) are provided on the fixing wings (6). The fixing wings (6) are distributed circumferentially along the shaft (2), and a weight reduction opening (8) is formed between the fixing wings (6). This bearing unit assembly has the advantages of reliable sealing, high load-bearing capacity, and long service life.

The utility model relates to ladder type bridge technology field, specifically is a kind of composite force structure and ladder type cable bridge of exempt from welding, wherein the composite force structure of exempt from welding is used to realize the detachable connection between two groups of side baffle and horizontal plate, including the alignment piece of sliding setting on horizontal plate and the locking block of setting on side baffle, locking block is equipped with the locking piece, in the process of alignment piece moving towards locking block, locking piece is matched with alignment piece, can fix alignment piece in locking block;To this end, the quick assembly of horizontal plate and side baffle is realized;Alignment piece includes the extension plate of sliding setting on horizontal plate, extension plate is symmetrically provided with two groups along the length direction of horizontal plate, embedding slot is set on each group of extension plate, embedding slot is matched with the lifting structure of setting on horizontal plate, can drive two groups of extension plate along the length direction of horizontal plate and make mutually far or close movement, to freely adjust the width of cable bridge.

The invention relates to a key (10) for producing a rotationally fixed connection between two annular components (2, 3). The key (10) has: a longitudinal extension direction (L); a first engagement section (11) for engaging with the first annular component (2); and a second engagement section (12) for engaging with a second annular component (3). The first engagement section (11) has a flat contact surface (13.1; 13.2) for engaging with the first annular component (2); the second engagement section (12) has a curved contact surface (14) for engaging with the second annular component (3). The invention further relates to an assembly (1) for torque transmission, comprising two ring-shaped components (2, 3) and such a key (10).

The surgical assistive robot and control method based on a continuum configuration described in this invention belong to the field of surgical assistive equipment technology. It includes a support mechanism, a motion positioning mechanism, a mounting mechanism, and a mechanical execution mechanism. The support mechanism consists of a horizontal support frame, a vertical support frame, and an inverted T-shaped frame. The motion positioning mechanism includes a gimbal and a sliding table mechanism. The mounting mechanism utilizes a hydraulic telescopic device I and a rotary motor I to flexibly adjust the height and rotation angle of the upper and lower fixed platforms. The mechanical execution mechanism, through a rotary motor II, drive motor I, drive motor II, drive motor III, and an adjusting motor, achieves precise adjustment of the extension and end-effector posture of the movable upper and lower arms. The control method includes positioning initialization, mounting mechanism adjustment, mechanical execution mechanism deployment, execution device fine-tuning, surgical operation execution, and dynamic feedback and correction, achieving high precision and flexibility in operation and effectively overcoming the difficulties in master-slave hand mapping and the limitations on surgical flexibility.

The utility model discloses a kind of polycrystalline diamond composite cutting teeth and high-efficiency high bearing drill, cutting tooth includes hard alloy base body and polycrystalline diamond layer, hard alloy base body is connected by the arc surface portion of two ends and the straight surface portion between two arc surface portion and is made into capsule-shaped column structure;The end face of polycrystalline diamond layer away from alloy base body is working surface, working surface is plane or is equipped with at least one convex portion;Convex portion includes upper end portion and the transition surface between it and arc surface portion and / or straight surface portion;The layout of cutting tooth is optimized by straight edge design in the application, innovative "capsule-shaped" composite cutting tooth design is introduced, and the failure problem of high bearing drill in restricted space is systematically solved under the tooth distribution bottleneck and hard rock working condition. Cutting tooth of straight edge design can realize higher tooth distribution density, so that drill can effectively distribute load in narrow space, thereby significantly improve the cutting performance of key area, improve overall drilling efficiency.

A kind of tilting-pad radial partial load bearing for ultra-supercritical steam turbine unit.It relates to the field of steam turbine unit sliding bearing.When existing actual load is inconsistent with design load, it leads to uneven temperature of left and right pads, insufficient oil film thickness, and easily causes wear and vibration problems.The tilting-pad radial sliding bearing includes bearing shell, upper supporting pad, lower supporting pad, stop pin, gasket set, cylindrical gasket, adjusting gasket, supporting pin, spring, oil seal ring, check valve, oil baffle, oil injection port.The supporting part adopts four-pad tilting-pad structure, and the relative position of fulcrum of pad is LC / L=0.6 (LC is the arc length of fulcrum position of pad, and L is the arc length of pad).Eccentric support is realized by the angle of deflection pad and bearing center line, and the deflection angle A is 7.5°.The utility model is applied to tilting-pad radial partial load bearing for ultra-supercritical steam turbine unit.

The utility model discloses a balanced thread structure which comprises a base body, a thread and an axial decreasing subtractive material, the thread is formed on the surface of the base body, the axial decreasing subtractive material is at least formed in a screwing area of the thread, and the subtractive quantity of the axial decreasing subtractive material is gradually decreased from the maximum load end of the thread to the minimum load end of the thread in the axial direction of the thread. According to the balanced thread structure, on the premise that basic parameters of standard threads are not changed and axial installation space is not increased, through local axial decreasing and material decreasing, threaded connection load distribution optimization is achieved.