55results about How to "Solve the problem of partial load" patented technology

The invention belongs to the field of lifting equipment, and in particular relates to a pivot fixed multi-face constrained scissor-type lifting mechanism. Three groups of scissor-type trusses are vertical to a base; the bottom ends of the three groups of scissor-type trusses are connected with three epsilon-type connecting pieces which are fixed on the base in a regular triangle manner respectively so as to form rotation pairs, and the top ends of the three groups of scissor-type trusses are connected with three epsilon-type connecting pieces which are fixed on the lower plane of a supportingplatform in the regular triangle manner respectively so as to form rotation pairs; the three groups of scissor-type trusses are in regularly triangular prism arrangement between the supporting platform and the base; an angle between the plane on which each group of scissor-type truss is placed and the plane on which the adjacent scissor-type truss is placed is 60 degrees; among the three groups of scissor-type trusses, central hinging points of crossed connecting rods of scissor layers are connected with the corresponding peaks of the regularly triangular connecting pieces so as to form rotation pairs; and a driving device supports the regularly triangular connecting piece of the first scissor layer on the base so as to drive the whole lifting mechanism to lift. The pivot fixed multi-faceconstrained scissor-type lifting mechanism has a stable structure and high rigidity, and is applicable to environments having requirements such as large loading capacity, working height and the like which cannot be met by general lifting equipment.

The invention belongs to the technical field of the construction of continuous rigid frame aqueducts, and particularly relates to a construction method for a joint section of a continuous rigid frame aqueduct. In order to solve the problems that because water flows through the continuous rigid frame aqueduct, integral force of the continuous rigid frame aqueduct is higher than that of a highway bridge or a railway bridge, so that the continuous rigid frame aqueduct cannot be constructed by a conventional joint method, the invention further provides the construction method of the joint section of the continuous rigid frame aqueduct. The construction method comprises the following steps of performing side span joint construction and a middle span joint construction, wherein side span joint construction is firstly performed, and then the middle span joint construction is performed; and before the joint construction, disassembling a hanging basket module and performing construction by a hoisting frame, wherein the joint construction process comprises the following steps of mounting the hanging basket, mounting a joint section module, performing strengthening framework construction, performing concrete construction, performing prestress construction and performing mud jacking. According to the construction method disclosed by the invention, a conventional hanging bracket construction method is changed, before the joint construction, the hanging bracket module is disassembled and the hoisting frame is mounted, so that the problem of offset loading of a cantilever beam caused by gravity of the hanging basket is solved, the operation of the joint construction is facilitated, and the bearing distribution uniformity of the joint section is improved.

The invention discloses a yard container crane heize device, which is characterized by the following: the double side of the heize device installs two cable drums connect to the decelerator; the central bearing of the two cable drums are fixed on both extremities of supporting rack; the armored rope on the surface of cable drum is the symmetrical double end arrangement; the lower part of the two cable drums (4,5) installs sling boarding or sling; two blocks are installed on the sling boarding or the two extremities of the sling; the double armored rope on the surface of cable drum cross the corresponding block directly; the whole device is placed in the middle of the small car frames, which uses the sling central lines as baseline; the armored rope crosses from the small car frame to sling top sheave; the motor activation decelerator takes the sling up and down by armored rope twisting on the double-drum. The invention improves the mechanical efficiency of the whole device, which reduces the cost.

The invention discloses a working roller bending device for a double-roller rolling machine and a roller bending force control method. The rolling machine comprises an arch, a working roller and a supporting roller. The roller bending device comprises a roller bending mechanism for supplying a roller bending force to the working roller; the roller bending mechanism is provided with roller bending blocks and a roller bending beam, wherein the roller bending block are fixedly mounted in a window of the arch and symmetrically arranged at two sides of a working roller bearing block; a piston rod and an end cover are arranged at two ends of each roller bending block; the roller bending blocks, the piston rods and the end covers form a roller bending hydraulic cylinder; the piston rods act on the roller bending beam. According to the roller bending device, a fixed single oil cylinder is adopted according to the structure, and micro differential pressure control is performed; compared with the prior art, the roller bending device has the advantages that the capacity is fully utilized, the maintenance points are few, and the quantity of the oil cylinders is decreased.

The invention provides a transverse rapid die changing method and device for a multi-station die. The method comprises the following steps that S1, an upper die and a lower die are opened; S2, a press machine sliding block falls down; S3, an upper clamping oil cylinder and a lower clamping oil cylinder are loosened; S4, an upper sliding plate, the upper die, the lower die and a lower sliding plate are connected into a whole; S5, a transverse die changing servo oil cylinder is dragged to a preset position to stop; S6, the upper die and the lower die are replaced with new upper dies and new lower dies; S7, the transverse die changing servo oil cylinder extends and resets; S8, the upper clamping oil cylinder and the lower clamping oil cylinder are clamped in place; and S9, the press machine sliding block moves upwards to a working station, and die changing is completed. According to the method and the device, the problem of unbalance loading of a press machine and the problem of out-of-tolerance caused by insufficient pressure can be effectively solved, and meanwhile, the die changing efficiency is improved.

The invention discloses an intelligent tilting pad thrust bearing device, which comprises a thrust disc, pads, jacking blocks, guide discs, rubber washers, piezoelectric ceramic stacks, bolts, a base, strain gauges, a strain signal conditioning circuit, piezoelectric ceramic power supplies, an AD (Analog-Digital) converter and a controller, wherein the controller is matched with the AD converter and the strain gauges for measuring bearing capacity of the pads, takes the bearing capacity as negative feedback, controls the piezoelectric ceramic stacks to generate micrometric displacement, actively adjusts gaps among the pads and the thrust disc, and changes the thickness of a lubricating film. The device is simple in structure, easy to mount and convenient to control, can timely find and quickly solve the problem of unbalance loading of a tilting pad thrust bearing, and can prolong the life of the tilting pad thrust bearing greatly.

The invention relates to a sleeve uninstalling device which is characterized by comprising a hydraulic cylinder, an oil cylinder joint, a clamp plate, first wheels, a frame body, rails, a pedestal, a second wheel, a collecting basket and a trolley bracket, wherein the hydraulic cylinder is fixed, the hydraulic cylinder is connected with the clamp plate through the oil cylinder joint, then the clamp plate is connected with the frame body, the frame body is connected with the pedestal, the first wheels are arranged on both sides of the frame body, the lower ends of the first wheels are provided with the rails, the second wheel is arranged on the pedestal, the collecting basket is arranged on a stand above the hydraulic cylinder, the hydraulic cylinder is arranged on a base plate of the stand, the trolley bracket is fixed on the frame body through a hinge pin, and runs perpendicular to a plane on which the collecting basket is located. The sleeve uninstalling device disclosed by the invention can store sleeves, so that sleeves are not required to be lifted away one by one every time. By using the sleeve uninstalling device disclosed by the invention, sleeves can be stored together, and then are integrally lifted away, so that time and manpower resources are saved, and the productivity of units is improved.

The invention relates to a speed increasing box, in particular to a low-noise planetary gearbox of a wind driven generator, which comprises an input shaft, a box body, an inner gear ring, a planet gear shaft, a center shaft and a planet carrier. The input shaft is fixedly connected with the planet carrier in a coaxial way. More than two planet gear shafts are uniformly distributed on the planet carrier through bearings. A large planetary gear and a small planetary gear are fixedly arranged on the planet gear shaft. The inner gear ring is fixed and arranged inside the box body. The small planetary gear is normally engaged with the inner gear ring. A sun gear is fixed and arranged on the center shaft. The large planetary gear is normally engaged with the sun gear. The input shaft is connected with the box body through the bearing. The outer diameter of the inner gear ring is smaller than the inner diameter of the box body. A plurality of box body pin grooves are uniformly distributed on the inner wall of the box body in the circumferential direction. The outer wall of the inner gear ring is provided with an inner gear ring pin groove. An elastic pin is embedded between the box body pin groove and the inner gear ring pin groove. The low-noise planetary gearbox of the wind driven generator has the advantages of low noise, long service life, strong shock resistance capability and low production and processing difficulty.

The invention provides an energy-saving lifting system of a combined cylinder, aiming to solve the problems of eccentric loading and asynchronism in double-cylinder lifting of engineering machinery. The combined cylinder for the system comprises at least two hydraulic cylinders in welding, the hydraulic cylinder bodies are welded, the tops of piston rods of the hydraulic cylinders are welded and share the same lug, rod cavities of the hydraulic cylinders are communicated with each other, and thus, synchronous lifting without eccentric loading of the combined cylinder can be realized. The energy-saving lifting system of the combined cylinder has the advantages of realizing synchronous lifting without eccentric loading, having high energy utilization rate and low cost, needing no pilot oil sources, being simple and reliable, and the like.

The invention relates to the technical field of logistics storage, in particular to an order vehicle AB surface segmentation algorithm based on a hill climbing method, which comprises the following steps of: 1, inputting an order of which the wave number is combined and corresponding order details; 2, according to the box type in the step 1, determining the serial number of each box position where the order vehicle can be placed; 3, giving the coordinates to the positions, where the boxes can be placed, in the step 2; step 4, initializing the position of the box in the wave in the step 1; 5, calculating the position of the currently placed center of mass, and solving the distance L between the center of mass and the center coordinate of the bottom layer of the order vehicle; step 6, calculating the total number of times of surface turning of the order vehicle required by the wave order picking completion as C; 7, respectively endowing L and C with a certain proportion, and summing S; 8, randomly selecting two boxes for position exchange, and repeating the steps 5-7 until an optimal solution is searched; by means of the hill climbing method, the unbalance loading problem of the order vehicle is solved, the number of times of turning of the order vehicle at the picking station is optimized, and then the picking efficiency is improved.

The invention discloses a flashboard lifting device used for an energy storage power station, and belongs to the technical field of energy storage power stations. In the technical scheme, the flashboard lifting device comprises a flashboard and flashboard racks on the two sides of the flashboard, the flashboard is slidingly connected with the flashboard racks, a base is arranged at the tops of theflashboard racks, fixedly connected with the flashboard racks, and provided with a lifting mechanism, one end of the lifting mechanism is connected with the flashboard, the flashboard is driven by the lifting mechanism to ascend and descend, the other end of the lifting mechanism is connected with a driving mechanism, and the driving mechanism is arranged on the base. In the technical scheme, theflashboard lifting device has the advantages that the design is simple, using is convenient, when the flashboard is lifted, the two sides of the flashboard are uniformly stressed, synchronous ascending or descending is realized, it is avoided that since stress is not uniform, the two sides of the flashboard are lifted without uniformity, in this way, the probability of flashboard damage or sliding groove damage is lowered, and working efficiency is improved.

The invention discloses a point-line gear transmission device with a full center positioning function and capable of solving a double intermediate shaft unbalanced loading problem. The device comprises an input shaft, a first input gear, a second output gear, a first intermediate shaft transmission gear, a second intermediate shaft transmission gear, an output gear stage gear, a first input gear,a second input gear, a first intermediate shaft gear stage gear and a second intermediate shaft gear stage gear, wherein the first input gear is driven by the input shaft, and a mounting boss is arranged on the first input gear; the mounting boss is sleeved with the second input gear; the first intermediate shaft transmission gear is arranged on a first intermediate shaft, and the second intermediate shaft transmission gear is arranged on a second intermediate shaft; the output gear stage gear is engaged with both the first intermediate shaft gear stage gear and the second intermediate shaft gear stage gear; and at least one of the first input gear, the second input gear, the first intermediate shaft transmission gear, the second intermediate shaft transmission gear, the first intermediateshaft gear stage gear, the second intermediate shaft gear stage gear and the output gear stage gear forms a point-line gear. According to the point-line gear transmission device, the transmission ratio can be increased, the tooth surface contact strength is increased, the noise is lowered, the the double intermediate shaft unbalanced loading problem can be solved through the device, center positioning of the gears of the double intermediate shafts can be achieved, machining and production are facilitated, and the stability is good.

The invention relates to a novel material groove which comprises a body and an installation machine part fixed to the outside of the body; the body comprises a front plate, a back plate, a left side plate, a right side plate and a bottom plate, and the top end of the back plate is further connected with a folded plate; the front plate, the back plate, the left side plate and the right side plate are all in arc transition with the bottom plate, and the front plate, the back plate, the left side plate, the right side plate and the bottom plate are integrally formed; the folded plate and the back plate as well as the left side plate and the right side plate are also integrally formed, and an opening defined by the front plate, the folded plate connected with the back plate, the left side plate and the right side plate is a round corner rectangle; in use, the included angle of the plane where the opening is located and the horizontal surface is 45 degrees, and the back plate is perpendicular to the horizontal surface; and the ratio of the height from the vertical surface where the highest point of the folded plate is located to the horizontal surface to the height from the vertical surface where the front plate is located to the horizontal surface is 3.5:1, the height of the vertical surface of the front plate is 144 mm, and on this basis, the invention further provides a stretching mold used for machining. The novel material groove has the beneficial effects that the appearance is aesthetic, the machining cost is relatively low, and materials are saved in use.

The invention provides an automatic steel coil finding and transverse centering method for an electromagnetic chuck of a full-automatic unmanned crane. The method comprises the following steps of adjusting the initial position of a sliding table, and lowering the electromagnetic chuck; recording the actual position of the sliding table; calculating the moving distance of the sliding table; calculating a deviation value; and adjusting the electromagnetic chuck. According to the automatic steel coil finding and transverse centering method for the electromagnetic chuck of the full-automatic unmanned crane, the center position of a steel coil can be automatically found, so that the hoisting accuracy and safety are improved, and the method can adapt to unmanned operation in special work environments.

The invention discloses a speed changer provided with a self-adaptive transmission device and both having single and double intermediate shaft advantages. The self-adaptive transmission device comprises an input shaft, a first input gear sleeves the input shaft and is driven by the input shaft; a mounting boss is arranged on the first input gear; a second input gear sleeves the mounting boss; a first intermediate shaft and a second intermediate shaft are separately arranged on the two sides of the input shaft; a first intermediate shaft transmission gear is arranged on the first intermediate shaft, and a second intermediate shaft transmission gear is arranged on the second intermediate shaft; a first intermediate shaft shift gear and the first intermediate shaft rotate synchronously, and asecond intermediate shaft shift gear and the second intermediate shaft rotate synchronously; an output shift gear synchronously meshes with the first intermediate shaft shift gear and the second intermediate shaft shift gear; and an output shaft and the output shift gear rotate synchronously, and the other end of the output shaft is connected with a speed changer. The speed changer can have the single and double intermediate shaft advantages, and solve the problem of double intermediate shaft partial load.