18results about How to "Prevent sideslip" patented technology

The invention discloses a Fluent-based numerical simulation and experimental design method for shaking of liquid in a tank of a tank truck, and belongs to the technical field of numerical simulation of fluid dynamics (CFD). The method includes the steps that the hole opening position of the wave-proof plate serves as an independent variable, multiple hole opening position schemes are designed, liquid shaking related indexes are determined to serve as dependent variables, a geometric model is established according to the actual structure of a tank truck tank body, a fluid mechanics model and boundary conditions are set, a solver is configured, output parameters and numerical simulation initial values are set, and an experiment is executed. The liquid shaking process of a certain swash plate trepanning scheme is simulated, acting force data, namely shaking index data, between liquid shaking and the inner wall of the tank body is recorded, the advantages and disadvantages of each trepanning position scheme are evaluated based on the shaking index data, and the optimal scheme is determined. According to the method, a real object experiment is replaced by CFD numerical simulation, parameter setting is carried out, the experiment cost and the experiment risk are remarkably reduced, the experiment efficiency is improved, and data support can be provided for industry design.

The invention belongs to the technical field of new energy automobile steering systems, and discloses a new energy automobile electric hydraulic power-assisted steering system and a control method thereof.The system integrates a double-source redundant hydraulic power unit, a hydraulic adjusting unit, a multi-dimensional working condition sensing unit and an intelligent main controller; the multi-dimensional working condition sensing unit is integrated with a road adhesion coefficient detection module and a battery remaining capacity detection module. The control method is layered look-ahead matching control and is executed by an intelligent main controller in parallel: a power-assisted decision-making layer divides a three-stage power-assisted mode according to multi-dimensional perception information, and limits a steering angular velocity when power-assisted is enhanced on a low-attached road surface; the energy optimization layer predicts and implements prospective energy storage and pump rotating speed self-adaptive adjustment based on the intention of a driver; and the fault diagnosis layer realizes rapid fault identification and redundancy switching through multi-parameter collaborative diagnosis. The contradiction of high energy consumption, response delay and weak safety guarantee of a traditional system is solved, and power-assisted steering which is safe, energy-saving, fast in response and high in adaptability is achieved.

The utility model relates to the technical field of multi-rotor unmanned aerial vehicles, and discloses a multi-rotor unmanned aerial vehicle frame, which comprises an unmanned aerial vehicle main body, a landing buffer mechanism is arranged at the bottom of the unmanned aerial vehicle main body, the landing buffer mechanism comprises a positioning cylinder, a first spring is fixedly mounted at the top of an inner cavity of the positioning cylinder, and a second spring is fixedly mounted at the bottom of the inner cavity of the positioning cylinder. A positioning plate is fixedly mounted at the bottom of the first spring, damping rods are fixedly mounted on the left side and the right side of the top of the positioning plate, and the damping rods are fixedly connected with the positioning cylinder. The landing buffering mechanism is arranged, when the supporting base makes contact with the ground, the first spring can buffer impact force, the damping rod can prevent the first spring from rebounding repeatedly, the propeller mechanism is arranged, an inserting rod can be separated from an inserting block by pulling a pull ring, and therefore a propeller body can be conveniently detached, the pull ring is loosened, and the propeller body can be conveniently detached. And the second spring rebounds to drive the insertion rod to be inserted into the insertion block, so that the propeller main body is mounted.

This utility model provides a front suspension for racing vehicles, belonging to the field of suspension technology. The front suspension includes a rocker arm, an upper wishbone, and a lower wishbone. One end of the upper and lower wishbone is rotatably connected to the front subframe. The rocker arm is rotatably connected to the front subframe via a shock absorber. A steering pushrod is located below the rocker arm and is connected to the rocker arm via a connecting rod. The rocker arm is connected to the lower wishbone via the pushrod. This device, through the design of a multi-directional ball joint structure, enables each hinge point to have multi-dimensional swing capability, improving the device's motion adaptability during multi-state switching. When using this device, the device can match the amount of wheel bounce by controlling the travel of the shock absorber in different states: extending to the upper limit of travel when the wheel is suspended, contracting to the middle travel when fully loaded, and compressing to the lower limit of travel during extreme bounce.

The present application provides a kind of cart, comprising: rack;Hub assembly is installed on rack by rotating shaft, hub assembly includes wheel hub motor and brake disc fixedly connected with wheel hub motor;Brake assembly is installed on rack, including first driving part and brake pad, first driving part is fixedly connected with rack, and brake pad is connected with first driving part;Operating assembly is installed on rack, including second driving part and brake handle, second driving part is connected with first driving part by hydraulic oil pipe, brake handle is installed on second driving part, when braking, hydraulic oil in second driving part is extruded to first driving part along hydraulic oil pipe by brake handle, pushes brake pad, so that brake pad contacts and extrudes brake disc.The present application simultaneously controls two brake assemblies by one operating assembly, to facilitate operation, and two wheels are simultaneously braked to realize rapid stop, and can avoid side slip phenomenon when braking, so that the cart running process is safer.

This utility model provides a tool cart anti-skid tire structure, including a rubber tire body, wherein: the rubber tire body has a buffer layer and a tire body ply layer inside, and an integral annular wide body extends outward from both sides of the rubber tire body. A first anti-skid protrusion structure is provided on the tire surface of the rubber tire body, and a second anti-skid protrusion structure is provided on the outer surface of the annular wide body. The second anti-skid protrusion structure is flush with the first anti-skid protrusion structure. The overall design of this utility model can increase the contact area with the ground during the use of the tool cart, and increase the friction between the tool cart and the ground through the first and second anti-skid protrusion structures to prevent skidding. At the same time, compared with the prior art, it can reduce the number of tires used and the installation cost, and does not increase the overall weight of the tool cart excessively.

The utility model provides a kind of realizes the rotation support device of railcar driving direction quick reversing, and the fixed seat assembly is rotatably connected by rotary support with the anti-skid support seat above it, and the lifting device installed on the upper end surface of fixed seat assembly is connected with support assembly, and anti-skid support seat is driven by lifting device and moves up and down, realizes that anti-skid support seat is separated from rail or anti-skid adaptation, the anti-rotation locking device of lower end with the detachable connection of anti-skid support seat in non-working state is rotatably installed on the support assembly.The utility model controls anti-skid support seat and moves down and steel rail anti-skid adaptation or moves up and is locked by anti-rotation locking device limit according to the reversing demand of railcar, realizes the direction reversing of railcar in limited space, solves the problem that railcar cannot reverse due to the special reversing track cannot be laid in limited space, improves operation efficiency, and guarantees operation stability and safety.

The utility model discloses an adjustable cement transfer device for engineering construction, which relates to the technical field of engineering construction and comprises a sweeping board, a driving wheel set, a control wheel set, a storage battery pack and a control handle. Through the cooperative use of the cart plate, the adjusting device, the expansion assembly, the movable supporting assembly, the linkage control piece, the limiting fence and the anti-skid grains, the problems that the cart plate area of an existing electric flat cart for engineering construction is mostly of a fixed structure, and the width and the supporting range of the bearing face cannot be flexibly adjusted according to the actual transfer requirement are solved; when a plurality of cement bags are arranged side by side or stacked to improve the transfer efficiency, part of the cement bags easily exceed the edge of a trolley plate, effective lateral support is lacked, the ground of a construction site is too uneven, the cement bags on the edge are prone to slipping off due to unstable stress due to jolting in the running process of the trolley, the cement bags are damaged and wasted, and the labor intensity of workers is reduced. And constructors may be stumbled due to falling cement bags, and meanwhile, the transfer efficiency is also reduced.

The utility model discloses forging drill rod strength detection equipment, which belongs to the technical field of drill rod processing and comprises a base, a sliding box is slidably connected to the inner side of the base, a lifting plate is slidably connected to the inside of the sliding box, and a tooth turntable is rotatably connected to the top of one side of the lifting plate. Two clamping screw rods are rotatably connected to the interior of the tooth rotating disc, two arc-shaped plates are in threaded connection to the exteriors of the clamping screw rods, a rotating motor is fixedly connected to the other side of the lifting plate, and a detection table is fixedly connected to the inner side of the base. By arranging a lifting motor and a lifting plate, an output shaft of the lifting motor can be driven to rotate to drive a lifting gear to rotate by driving the lifting motor, so that the lifting plate and a tooth turntable move up and down, and therefore, when drill rods with different thicknesses are fixed, the heights of the drill rods can be adjusted, and the bottoms of the drill rods are in contact with a detection table; therefore, the drill rod or the arc-shaped block is prevented from being damaged during detection.

The application discloses a plastic storage device, the top of the barrel is provided with a rotating cover plate for sealing, the bottom of the barrel is provided with an annular protrusion, the upper end surface of the rotating cover plate is provided with a limiting cavity, the limiting cavity is internally provided with a limiting assembly for limiting and preventing lateral sliding of the annular protrusion by the self weight of the barrel, the limiting assembly comprises a limiting block, a limiting ring and an anti-skid mechanism, the limiting block is embedded in the inner wall of the limiting cavity, the bottom of the limiting cavity is provided with a ring cavity for driving the limiting block to horizontally move, the limiting ring is slidingly connected in the inner portion of the ring cavity, the anti-skid mechanism is fixedly connected to the inner wall of the limiting ring, and the anti-skid mechanism protrudes from the surface of the limiting cavity, so that the application can effectively improve the safety hidden trouble of the large-weight storage device during carrying, and improve the simplicity and convenience of the device.

The utility model relates to an anti-sideslip adjusting device for disassembly and assembly of a derrick. The anti-sideslip adjusting device comprises a derrick lifting device, a derrick placing structure and a first linear motion mechanism, the derrick lifting device is provided with a lifting table, the derrick placing structure is slidably connected to the lifting table in the left-right direction, and when a derrick is placed on the lifting table, the derrick placing structure can limit the derrick in the left-right direction; a first mounting position is arranged on the lifting table, the first linear motion mechanism is fixedly mounted on the first mounting position, and the motion output end of the first linear motion mechanism is connected with the derrick placing structure and can drive the derrick placing structure to linearly slide in the left-right direction. The technical problem that an existing derrick lifting device is prone to generating transverse sideslip is solved.

This invention provides a multi-functional rail engineering vehicle for safe direction switching. The vehicle is equipped with a hydraulic winch at the front and a hydraulic excavator at the rear. An axle-box locking cylinder, corresponding to the upper and lower positions of the axle-box end caps in the wheelset axle boxes, is located on the bottom surface of the vehicle frame. A slewing support device, positioned between two sets of wheelset axle boxes, is installed in the middle of the vehicle. When the piston rod of the axle-box locking cylinder retracts, it causes the wheelset axle boxes to move upwards, and the vehicle then moves downwards to the slewing support device, which is adapted to the anti-slip mechanism of the rails, and rotates to change direction. This invention enables material transfer, traction, excavation, and hoisting without the need for additional equipment. It solves the problem of traditional rail engineering vehicles requiring dedicated turning lines to adjust direction due to track structure limitations. It provides convenience for direction switching in single-track railway maintenance, tunnel construction, and small-scale work areas with limited space, reducing the difficulty of direction adjustment and improving operational efficiency.

The utility model belongs to cable correction technical field, and disclose a kind of correction device of cable conductor forming S-bend, including operation platform, the top of operation platform is equipped with two correction components of mirror image distribution, the top of operation platform is fixedly connected with traction assembly, the correction component includes the fixed seat of operation platform fixed connection, the one end of fixed seat is rotatably connected with carousel, the outer surface of carousel is fixedly connected with gear ring, the utility model discloses correction component is arranged, under the effect of power motor one drive gear and carousel meshing rotation, drive three correction rollers synchronous regulation interval, can be aimed at different radian S-bend and realize multi-angle, dynamic correction, the close fit cable surface of 'U' shape correction groove, cooperate with the convex structure of guide block and guide groove, effectively avoid cable in straightening process side slip or deviation, compared with traditional fixed roller, significantly improve straightening accuracy and conductor surface integrity.

The utility model discloses a pavement paving module and a modular pavement using the same. The pavement paving module comprises a square block body, an assembling groove is formed in the middle of one side wall of the square block body; assembling blocks are fixed at four corners of the side wall, opposite to the circumferential direction of the assembling groove, of the square block body; a plurality of threaded holes are formed in the groove bottom wall, opposite to the assembling groove, of the square block body; anchoring holes are formed in the middles of the multiple assembly blocks. Pavement construction is conducted through mutual meshing of the square blocks arranged on the upper layer and the lower layer, an assembly type construction mode is adopted, environmental pollution and construction waste are avoided, the construction efficiency is improved, the construction period is shortened, and the maintenance cost of the pavement can be reduced through a module splicing mode.

The application discloses a material strength detection equipment for building engineering, and belongs to the technical field of engineering material detection, which comprises a base, two coaxially distributed hydraulic cylinders are horizontally and fixedly installed on the top surface of the base, the output ends of the two hydraulic cylinders are oppositely arranged, a clamping assembly is arranged on the output end of each hydraulic cylinder, the clamping assembly comprises a box body which is fixedly installed on the output end of the hydraulic cylinder, the V-shaped groove structure of the movable clamping plate and the fixed clamping plate and the one-way check sawtooth anti-skid pattern are arranged, the contact area with the circular steel bar is increased, the auxiliary positioning is realized to prevent side sliding, the self-locking effect of "the tighter the more" is utilized to reduce the probability of slipping. In addition, in combination with the design of the "rigid and flexible combination" of the ejection rod and the elastic element in the pressurizing mechanism, the small unevenness on the surface of the steel bar can be compensated and additional anti-slippage resistance can be provided, the accurate guidance of the movable clamping plate by the guide rod is matched, the eccentric moment and the lateral shear force are eliminated, and the centration and stability of the clamping process are ensured.

The utility model provides a winding device for textile fabric production, which relates to the technical field of textile fabric production and comprises a bottom plate, a pair of vertical plates are symmetrically arranged at the top of the bottom plate, a winding motor is arranged on the side wall of one vertical plate, and a winding roller is arranged on an output shaft of the winding motor; a clamping electric push rod is arranged on the side wall of the other vertical plate, and clamping discs connected with the two ends of the winding roller correspondingly are arranged on the side wall of a telescopic shaft of the clamping electric push rod and the side wall of an output shaft of the winding motor correspondingly; a connecting hole matched with the side wall of the winding roller is formed in the end, away from the vertical plate, of the clamping disc, stop grooves are formed in the side walls of the two ends of the winding roller, and stop blocks located in the connecting hole and matched with the stop grooves are arranged in the clamping disc; and a connecting bearing is arranged at the joint of the telescopic shaft of the clamping electric push rod and the clamping disc. The winding device is reasonable in structure, convenient to replace and high in winding efficiency.

The application solves the problem of low stability of pipeline module during lifting, relates to the technical field of lifting device, and particularly relates to a remote control type pipeline overall lifting device, which comprises a moving frame, a hydraulic jacking assembly is slidably installed on the moving frame, a goods shelf assembly is installed on the hydraulic jacking assembly, the goods shelf assembly comprises a backrest plate and two fork arms arranged on the front surface of the backrest plate, a limiting assembly is installed between the two fork arms, when the pipeline module is moved to the two fork arms, the limiting assembly and the backrest plate form front and rear clamping locking of the pipeline module, the limiting assembly comprises a supporting structure arranged between the two fork arms, a positioning shaft is arranged on the supporting structure, and a baffle is arranged on the outer surface of the positioning shaft. The backrest plate at the rear end of the limiting assembly and the fork arm can form an automatic adjustment and clamping mechanism, after the pipeline module is placed on the fork arms, front and rear clamping of the pipeline module is formed, and the risk of damage of the pipeline module during transportation is reduced.