9results about How to "Avoid crack failure" patented technology

This utility model discloses a novel stamped and welded rear subframe, relating to the technical field of automotive chassis structural components. It includes a front tube beam, a rear control arm sleeve, and a suspension sleeve. The front tube beam is welded to the left longitudinal beam, right longitudinal beam, front plate of the rear crossbeam, and rear plate of the rear crossbeam to form a frame structure. At the corners of the frame, left front beam reinforcement plates, right front beam reinforcement plates, left rear beam front reinforcement plates, right rear beam front reinforcement plates, left rear beam rear reinforcement plates, and right rear beam rear reinforcement plates are added. Side reinforcement plates are provided on the outer side of the rear control arm sleeve. These side reinforcement plates adopt a triangular structure and are welded to the front plate of the rear crossbeam, the rear plate of the rear crossbeam, and the right longitudinal beam. The side reinforcement plates extend and are welded onto the right longitudinal beam. The suspension sleeve adopts a flanged structure. This novel stamped and welded rear subframe, employing a novel stamped and welded structure, optimizes the problem of local stress concentration in the mounting brackets when the subframe is subjected to alternating loads, avoiding subframe cracking and failure.

The utility model discloses a flexible disc of integrated starting gear ring structure relates to flexible disc technical field. The flexible disc of integrated starting gear ring structure, including flexible disc disc body, flexible disc outer end and starting tooth, is set up flexible disc waist hole on flexible disc disc body. The flexible disc of integrated starting gear ring structure, through the machining allowance of flexible disc outer end and remains starting tooth's processing forming, makes starting tooth and flexible disc outer end integrated moulding, cancels the welding of flexible disc outer end and starting gear ring in the prior art and becomes the design, avoids the size of welding scar and cannot standardization, and there is not one, reaches the assembly gear ring of reducing, prevents the occurrence of the incomplete welding, cancels the welding process flow, prevents the failure of welding scar crack, and reduces the cost of sub -parts, and the structure strength of flexible disc disc body is strengthened when the plate enhances the transmission torque, and the flexible disc waist hole symmetric distribution lightens disc body quality, and enough structural strength is reserved simultaneously.

The utility model discloses a kind of steel anti-collision beam traction ring reinforcement structure, and anti-collision beam includes energy-absorbing box and the fixed bottom plate of energy-absorbing box welding connection, strengthening piece is arranged between the energy-absorbing box and fixed bottom plate, the strengthening piece includes connecting bottom plate, the connecting bottom plate is attached to fixed bottom plate and welds, the inner side of the connecting bottom plate is provided with arc flanging, one end of the arc flanging upwards is provided with inclined flanging, the inclined flanging is in contact with energy-absorbing box and welds, by being designed with the connecting bottom plate of fixed bottom plate attachment and by welding to the connecting bottom plate fixed, by the effect of arc flanging and inclined flanging, make flanging avoid the weld space of energy-absorbing box and fixed bottom plate, and by the welding of inclined flanging and energy-absorbing box, the strength of fixed bottom plate and energy-absorbing box connection has been improved, prevent the weld crack or part body crack failure between fixed bottom plate and energy-absorbing box, so as not to increase the thickness or strength of cross beam and energy-absorbing box, reduce cost.

The application discloses an engine and an engine refrigerant discharging method, which comprises an engine body, a water pump, a bottom water outlet, a freezing point instrument, a control unit and at least one pipeline water outlet. The bottom water outlet is arranged at the bottom of the engine body, and the pipeline water outlet is arranged at the corner of the pipeline in the engine body. The water inlet of the water pump is connected with each pipeline water outlet. The freezing point instrument is used for measuring the actual freezing point value of the refrigerant in the engine. When the user injects the refrigerant into the engine, the control unit determines that the target standard freezing point value corresponding to the target freezing point threshold interval to which the actual freezing point value belongs is higher than the ambient temperature, controls the bottom water outlet to discharge the first refrigerant in the engine, and controls the water pump to extract the second refrigerant in the engine through the pipeline water outlet. Thus, the problem that the refrigerant discharging rate of the engine does not meet the requirements due to the complex structure of the engine waterway and the water storage in some areas is solved.

The utility model belongs to the technical field of cutting top pressure relief hole sealing technology, concretely is a kind of cutting top pressure relief hole quick sealing device. Including: shell, the shell can be inserted into pressure relief hole;Hollow tube, the through hole is arranged in hollow tube inside, and hollow tube is arranged in shell and can rotate;Sealing rubber gasket, the sealing rubber gasket is arranged in the front end of hollow tube and let hollow tube pass through from middle, and sealing rubber gasket periphery side is contacted with shell inner wall;Water-filled pouch, the water-filled pouch is arranged in shell front end, and the front end of water injection pipe is communicated, and the water injection pipe passes through the through hole arranged in hollow tube inside and is communicated with water source. The utility model belongs to effectively reduce labour intensity and improve operation safety. Groove design ensures that the device is inserted smoothly without obstruction, to avoid scratching hole wall.

The utility model belongs to the technical field of power cable protection, especially a kind of pre-branch cable external protection structure, including upper half casing and lower half casing, the both ends of upper half casing and lower half casing are equipped with locking unit;Locking unit includes wedge half ring and conical half ring, wedge half ring inner wall is fixedly connected with baffle ring, the outer end of baffle ring is equipped with first counterbore, the outer end of conical half ring is equipped with the second counterbore corresponding with first counterbore, and pre-tight spring is equipped in second counterbore;Axial gap is equipped between conical half ring and wedge half ring, and outer taper surface and inner taper surface form matching taper;Protection cavity and locking assembly are formed by buckling connection, the external protection of pre-branch cable injection molding body is realized, when cable is subjected to tension, conical half ring is self-adapting wedge and transmits tension to casing, effectively avoid that injection molding body bears pulling stress and cracks failure, improve the protection reliability and service life of pre-branch cable branch joint.

The invention provides a large-height-diameter-ratio titanium-aluminum alloy blank manufacturing device and method. The method comprises the following steps that S10, a blank is designed, specifically, a forge piece is designed according to a target titanium-aluminum alloy blade; the forge piece comprises a blade root part, a blade body part and a blade crown part; presetting the shape size of the blank according to the forge piece; s20, a forming die and raw materials are obtained, specifically, the forming die is prepared according to the preset shape and size of the blank in the step S10, and a bar is selected; s30, the bar is subjected to upsetting forming through the forming die, and a blank is obtained; and carrying out hot working on the blank to obtain the target titanium-aluminum alloy blade forge piece. According to the large-height-diameter-ratio titanium-aluminum alloy blank making method and device, the problems that large-height-diameter-ratio metal bar blank making is unstable and the die cost is high due to titanium-aluminum alloy isothermal forming can be solved, non-isothermal forming of large-height-diameter-ratio titanium-aluminum alloy special-shaped piece blank making is achieved, the material utilization rate is increased, waste of titanium-aluminum alloy materials is reduced, and the large-height-diameter-ratio titanium-aluminum alloy blank making method and device are suitable for large-height-diameter-ratio titanium-aluminum alloy blank making. And the machining cost of the blade is effectively reduced.

This utility model discloses a self-expanding external wall screw hole sealing structure, relating to the field of building construction technology. The utility model includes a screw hole, inside which a sealing component and a self-expanding component are installed. This utility model utilizes a hollow sealing rod and a reusable adjusting rod to work together to inject silicone-based self-expanding sealant and closed-cell polyurethane foam in stages. After the adjusting rod is inserted into the sealing rod, the positioning plate contacts the external wall, triggering the injection of sealant into the first injection hole. The silicone-based self-expanding sealant expands and fills the micro-cracks in the inner wall of the hole, achieving a noise reduction effect. Subsequently, the adjusting rod is pulled out, and closed-cell polyurethane foam is injected through the second injection hole to further fill the gaps, achieving a waterproof effect. This staged injection process avoids cross-contamination of materials. The elasticity of the silicone-based self-expanding sealant and the sound absorption properties of the closed-cell foam work synergistically to significantly improve waterproofing and noise reduction effects, blocking moisture penetration and sound wave transmission paths.

This invention relates to the field of steel structure component technology, specifically to a steel structure component for improving seismic performance. The component includes a main structural beam and two I-beam crossbeams. An mounting sleeve is fixedly installed on the outside of the main structural beam. Reinforcing plates are fixedly installed on both side walls of the mounting sleeve. A seismic-resistant mechanism is also included, comprising two assembly components, two seismic-resistant components, and two reinforcing components. Each assembly component includes a U-shaped interface fixedly connected to the side wall of the mounting sleeve. This invention, through its assembly components, enables rapid and precise positioning of the seismic-resistant mechanism and the mounting sleeve, thereby significantly improving the assembly accuracy and construction efficiency of the joint. The seismic-resistant components mitigate the impact of cyclic loads on the joint and reduce stress concentration on bolts and components. The reinforcing components enhance the joint's resistance to lateral displacement and torsion, while strengthening the overall stiffness of the joint.