8results about How to "Improve stress condition" patented technology

The utility model discloses a high-speed powder mixer, which relates to the technical field of mixers, and comprises a rack, a support plate is arranged outside the rack, support pieces are arranged at the top of the support plate, a turnover shaft is rotatably arranged between the two support pieces, a mixing tank body is arranged on the turnover shaft, and the mixing tank body is provided with a plurality of stirring blades. A high-speed motor and a wall scraping motor are arranged outside the mixing tank body, the high-speed motor is connected with a shear knife, cavities are formed in the two ends of the overturning shaft, a cable is arranged in the cavity in one end of the overturning shaft, a communicating pipe is arranged in the cavity in the other end of the overturning shaft, and the communicating pipe is connected with a water pipe and an oil pipe on the tank body. The supporting structures at the two ends greatly increase the structural strength of the overturning shaft, the stress condition of the overturning shaft is greatly improved, the bearing capacity of the overturning shaft is increased, the abrasion and fatigue conditions of the bearings are improved, the service life of the bearings is prolonged, and the supporting structures at the two ends guarantee the stability of the whole equipment during high-speed operation.

The invention belongs to the field of building appliances, and particularly relates to a building formwork support and a detection mechanism thereof. The positioning assembly comprises a first sliding base, a second sliding base and a pair of positioning plates, wherein the first sliding base and the second sliding base are matched with vertical arms arranged on the left side and the right side of the base body. And a hoop I and a hoop II which are matched with each other are arranged on the two sliding seats. And the two positioning plates are respectively arranged on the two vertical arms and are correspondingly matched with the two sliding seats. A first vertical plate is arranged on the first sliding seat, and a second vertical plate is arranged on the second sliding seat. And the two vertical plates are arranged between the two vertical arms. A plurality of smooth through holes matched with the smooth columns are formed in the lower portion of the first vertical plate. A transverse plate is arranged on the lower portion of the second vertical plate. One end of the smooth column is fixedly connected with the transverse plate, and the other end is inserted into the smooth through hole. An elastic layer is fixedly arranged on the upper end face of the transverse plate. The stress condition of the lower portion of the supporting rod can be optimized, the firmness and reliability of fixing of the lower portion of the supporting rod can be improved, and the capacity of restraining the situation that the vibration amplitude is too large is improved.

The present application belongs to the field of rail transit equipment technology, and provides a multi-stage damping spring floating slab track bed and a regulating method, comprising a floating slab, a lower-mounted vibration isolator, a side-mounted vibration isolator, a first stiffness adjusting device, a second stiffness adjusting device, a base, a drainage ditch and a shear hinge device. The structure of the present application has lower dynamic stiffness than ordinary spring floating slab, but the static stiffness is not reduced, that is, the damping effect of the rail system is improved while the carrying capacity is ensured. It also has certain lateral stiffness, so that the stress condition of the rail structure in the curve section is significantly improved. It can also achieve ultra-low frequency damping within 10 Hz, and suppress the "low frequency vibration amplification" phenomenon of traditional spring floating slab.

This invention provides an electrical connection device with a triangular support structure, including an electrical connection wire, a catenary electrical connection clamp, an electrical connection support clamp, and a contact wire electrical connection clamp; the electrical connection wire includes a C-type electrical connection wire and an extended electrical connection wire. This invention extends and bends the electrical connection wire to form a triangular support structure with the original C-type electrical connection wire. Adding catenary clamps and electrical connection support clamps to the triangular support structure enhances overall stability, effectively improves the stress condition of the catenary clamp, effectively disperses and reduces stress, avoids deformation risks, and effectively improves the stability and reliability of the electrical connection device, providing strong support for power transmission and distribution in railway contact network systems.

This utility model belongs to the field of low-voltage electrical technology and discloses an electromagnetic starter, including a housing assembly, a stop operation button, a thermal relay, and a button assembly. The housing assembly has an installation space; the stop operation button is located on the housing assembly and is used to accept operation to stop the electromagnetic starter; the thermal relay is located in the installation space and has a stop button for stopping the thermal relay and a reset button for resetting the thermal relay; the button assembly is movably located on the housing assembly, with its first end for accepting a pressing operation, and its second end extending into the installation space and having a pushing part that can push against the stop button and the reset button. This electromagnetic starter can reduce the frequency of use of the button assembly for resetting and stopping the thermal relay, optimize the force condition of the button assembly when pressed, and improve the service life of the button assembly and the thermal relay.

The invention belongs to the technical field of oil well pumps of rod oil production systems, and particularly relates to an end upsetting oil well pump pull rod and a machining method thereof. An end upsetting oil well pump pull rod comprises a rod body, an oil well pump connecting end and a sucker rod connecting end, the oil well pump connecting end and the sucker rod connecting end are connected to the two sides of the rod body, the oil well pump connecting end comprises an upsetting section, the diameter of the upsetting section is larger than that of the rod body, a first transition arc is arranged at the joint of the upsetting section and the rod body, and a metric thread section is arranged at the tail end of the upsetting section. A metric thread is arranged on the metric thread section and used for being connected with an oil well pump, a sucker rod connecting section is arranged at the end of the sucker rod connecting end, the diameter of the sucker rod connecting section is larger than that of the rod body, a second transition arc is arranged at the joint of the sucker rod connecting section and the rod body, and a sucker rod thread is arranged at the tail end of the sucker rod connecting section and used for being connected with a sucker rod coupling. Through the end upsetting structure, the stress condition of the tail end of the thread is improved, the toughness and fatigue resistance of the pull rod are improved, and the fracture frequency of the pull rod is reduced.

The invention relates to the technical field of coal mine underground fully mechanized coal mining face supporting, in particular to a mining surrounding rock pressure dynamic self-adaption self-moving type advance supporting device and a supporting method thereof.The device comprises a crawler chassis, a bearing platform, a resident hydraulic cylinder and a resident bottom plate, a hydraulic power station is integrated in the crawler chassis, and a power source and a controller are arranged on the bearing platform; and power self-sufficiency and intelligent control are realized. A residence hydraulic cylinder drives a residence bottom plate to lift, and the crawler chassis is switched between a grounding walking state and a suspended residence state by utilizing counter-acting force; a stand column cylinder barrel, a telescopic plunger and a spherical hinge type top beam are arranged above the resident hydraulic cylinder and used for supporting the top plate. The pressure sensor and the electro-hydraulic proportional control valve set are adopted for closed-loop control, and real-time sensing of surrounding rock pressure and self-adaptive adjustment of supporting resistance are achieved. The device is small in size, flexible and high in adaptability to roadway bottom plate conditions, and the problems that traditional supporting equipment is difficult to move, and passive bearing and unbalance loading damage are caused are effectively solved.