3results about How to "Reduce peak load" patented technology

The utility model belongs to the technical field of protection engineering, specifically is a kind of steel structure corrugated board shed hole with passive protective net, including protective sheet;The protective sheet is arc-shaped arrangement;Multiple cavities are equipped in the middle part of the protective sheet;Multiple reinforcing bars are fixedly connected in the middle part of the protective sheet;First connecting groove is set in the sidewall of the protective sheet;The sidewall of the protective sheet is fixedly connected with connecting plate;The first connecting groove and connecting plate are oppositely arranged;Multiple sleeve connectors are fixedly connected in the end of the protective sheet;Buffering assembly is installed in the middle part of the protective sheet;The above-mentioned structure protective sheet can reduce structural deadweight, reduce transportation and hoisting difficulty, macromolecular polymer material can effectively resist aging, ensure the service life of product, and the protective sheet has good insulation, so that it can adapt to discharge environment, and the protective sheet can be quickly connected during installation.

The present application provides excavator and energy recovery system of excavator movable arm and bucket based on pump motor, and relates to the technical field of excavator.The energy recovery system comprises a bucket cylinder, a first three-position four-way electromagnetic reversing valve adapted to switch the rod cavity and the rodless cavity of the bucket cylinder to be communicated with the first two-position two-way electromagnetic reversing valve and the second two-position three-way electromagnetic reversing valve respectively, a movable arm cylinder, a second three-position four-way electromagnetic reversing valve adapted to switch the rod cavity and the rodless cavity of the movable arm cylinder to be communicated with the first two-position three-way electromagnetic reversing valve and the second two-position two-way electromagnetic reversing valve respectively, a hydraulic pump adapted to supply hydraulic oil in a hydraulic oil tank to the first two-position two-way electromagnetic reversing valve and the third two-position two-way electromagnetic reversing valve, and a motor drivingly connected to the hydraulic pump.A pump motor is connected between the second two-position two-way electromagnetic reversing valve and the hydraulic oil tank, an electric motor generator integrated machine is drivingly connected to the pump motor, and an energy storage device is electrically connected to the motor and the electric motor generator integrated machine.

The utility model discloses a kind of polycrystalline diamond composite cutting teeth and high-efficiency high bearing drill, cutting tooth includes hard alloy base body and polycrystalline diamond layer, hard alloy base body is connected by the arc surface portion of two ends and the straight surface portion between two arc surface portion and is made into capsule-shaped column structure;The end face of polycrystalline diamond layer away from alloy base body is working surface, working surface is plane or is equipped with at least one convex portion;Convex portion includes upper end portion and the transition surface between it and arc surface portion and / or straight surface portion;The layout of cutting tooth is optimized by straight edge design in the application, innovative "capsule-shaped" composite cutting tooth design is introduced, and the failure problem of high bearing drill in restricted space is systematically solved under the tooth distribution bottleneck and hard rock working condition. Cutting tooth of straight edge design can realize higher tooth distribution density, so that drill can effectively distribute load in narrow space, thereby significantly improve the cutting performance of key area, improve overall drilling efficiency.