8results about How to "Large impact load" patented technology

The present invention discloses a new type of steel back that can be used for commercial vehicle brake pads, and relates to a steel back used for automotive disc brakes and a manufacturing method thereof, and in particular to a steel back used for commercial vehicle disc brakes and a manufacturing method thereof. It comprises a steel back substrate, which is made of steel of various materials suitable for forging through a forging process; there is a shallow depression area on the front of the steel back substrate, and raised forged reinforcement ribs are distributed in the shallow depression area to divide the shallow depression area into several fixed loading areas, and in each fixed loading area, there are pieces of forged nails starting from the steel back substrate. The new type of steel back of the technical solution of the present invention is not only high in strength and can withstand greater impact loads, but also can be lightweight, save manufacturing materials, and reduce production costs.

The utility model provides a movable supporting device for a coiling machine, which comprises an inlet side movable supporting device and an outlet side movable supporting device, the inlet side movable supporting device and the outlet side movable supporting device respectively comprise a positioning block, a connecting rod mechanism and a movable supporting device body, and the input end of the connecting rod mechanism is connected with a hydraulic cylinder. The output end of the connecting rod mechanism is connected with the movable supporting device body, when the connecting rod is opened to a limit position, namely the movable supporting device body is in a working state, the whole connecting rod is collinear with the axis of the tail end of a winding drum to be held, and when the connecting rod is retracted to the limit position, namely the movable supporting device body is opened in place, the whole connecting rod is collinear with the axis of the tail end of the winding drum to be held. And the movable supporting device body is limited by the positioning block. According to the utility model, the mechanical dead point position of the connecting rod mechanism is fully utilized, the acting force directions of the connecting rods are collinear, the torque is zero, and the impact load is directly transmitted to the frame of the coiling machine. The phenomena of hydraulic cylinder damage, oil leakage and the like caused by the fact that impact component force directly acts on the hydraulic cylinder can be avoided.

The invention provides a method for improving the impact toughness of a mowing robot cutter, and the method mainly comprises the following steps: preparing brazing filler metal: the brazing filler metal is NiBSi-Cr3C2 powder and is obtained by mechanically mixing NiBSi powder and Cr3C2 powder, and the mass of the NiBSi powder accounts for 75% of the total mass of the NiBSi-Cr3C2 powder; the method comprises the following steps: pretreating a cutter base body, slowly adding brazing filler metal into a polyvinyl alcohol aqueous solution, and uniformly stirring to obtain paste; then the paste is applied to the cutting face of a tool base body, the coating thickness is 0.5 mm, and the coated tool is subjected to standing drying for 12-24 hours under the room temperature condition; then, the dried cutter is subjected to coating braze coating through induction heating equipment, and the heating temperature is controlled to range from 1000 DEG C to 1150 DEG C; then air-cooling to room temperature; and finally, the tool is subjected to post-treatment (heat treatment, quenching and tempering). According to the method, the coating is firstly coated on the cutter base body by adopting a braze coating method, and then the cutter is subjected to post-treatment, so that the impact toughness of the mowing robot cutter can be improved.

The utility model relates to the field of vehicle protection, and provides a side protection device and a vehicle. The side protection device comprises a connecting support, the connecting support comprises a web, wing plates perpendicular to the web are arranged on the two sides of the web in the width direction of the web, bent plates are arranged at the ends, away from the web, of the wing plates, the bent plates are parallel to the web, and a first connecting end and a second connecting end are formed on the connecting support. The first connecting end is used for being connected to a bottom plate of a vehicle. And the side protection plate is connected to the second connecting end. According to the side protection device, the structural stability of the connecting support is guaranteed, external impact can be effectively resisted, the side face of a vehicle is protected, the installation process is simplified, the working efficiency is improved, and meanwhile the installation cost is reduced. The side protection device can also be suitable for different types of vehicles, and has high universality and adaptability.

The utility model provides a compression-resistant core model profile pipe, which relates to the technical field of lightweight walls, and comprises two groups of inner templates, the two groups of inner templates are spliced to form the compression-resistant core model profile pipe, and a plurality of groups of mutually independent cavities are arranged in the core model profile pipe; each inner template comprises a plurality of groups of convex parts which are transversely arranged, the convex parts of the two inner templates are spliced to form a cavity, lug plates are fixed on the two sides of each convex part, and the adjacent convex parts are fixedly connected through the lug plates. And a plurality of groups of cavities are formed in the shell. On one hand, concrete consumption can be reduced, self-weight is effectively reduced, and building load is reduced; on the other hand, the cavity forms an air layer, heat transfer can be remarkably reduced, and efficient heat preservation and heat insulation are achieved. Meanwhile, the effect of blocking sound wave conduction can also be achieved.

This invention provides a method for improving the impact toughness of lawnmower robot blades. The method mainly includes the following steps: preparing a brazing filler metal: the filler metal is NiBSi-Cr3C2 powder, obtained by mechanically mixing NiBSi powder and Cr3C2 powder, with NiBSi powder accounting for 75% of the total mass of the NiBSi-Cr3C2 powder; pretreating the blade substrate, then slowly adding the filler metal to a polyvinyl alcohol aqueous solution and stirring until a paste is obtained; applying the paste to the cutting surface of the blade substrate with a thickness of 0.5 mm, and allowing the coated blade to dry at room temperature for 12-24 hours; then brazing the dried blade using an induction heating device, with the heating temperature controlled at 1000-1150℃; followed by air cooling to room temperature; finally, post-treatment of the blade (heat treatment + quenching + tempering). This invention first applies a coating to the blade substrate using a brazing method, and then performs post-treatment, thereby improving the impact toughness of lawnmower robot blades.

The invention provides a vehicle transmission system protection method and device and a vehicle, and relates to the technical field of vehicle control systems.The vehicle transmission system protection method comprises the following steps that a predicted load of a concerned part in a transmission system load prediction model is obtained in real time, and the predicted load is calculated; when the predicted load of the concerned part meets a first preset condition, a torque reduction protection strategy is executed, and when the predicted load of the concerned part meets a second preset condition, the torque reduction protection strategy is quitted. According to the vehicle transmission system protection method, the predicted load of the concerned part is predicted through the transmission system load prediction model, and the predicted load serves as a judgment condition to determine whether to execute the torque reduction protection strategy or exit the torque reduction protection strategy; the transmission system load prediction model can be effectively utilized to predict and deal with potential load problems, so that safe and stable operation of the transmission system is protected.