38results about How to "Won't lose stability" patented technology

The invention relates to a flexible combined spliced target ship. The flexible combined spliced target ship is characterized in that the spliced target ship comprises a target ship platform and a ship-mounted mounting support arranged on the target ship platform, and an automatic sailing control device, a sailing attitude measuring device, a wireless communication device and a radar radiation source/interference source simulation device are arranged on the ship-mounted mounting support. The target ship is formed by splicing buoyancy units with the unified structural specification flexibly, target ship platforms of different structural scales can be formed by flexibly combining different numbers of buoyancy units, and the target ship has good structural expansibility, is suitable for the target simulation requirements for flexible and various scales and has good split transport capacity and anti-strike capacity.

The invention discloses a non-excavation type laying construction method of a large-pipe-diameter pipeline of a heat supply network. The method comprises the steps that drilling machine equipment is selected, the pull strength of a selected horizontal directional drilling machine needs to meet the requirement of the directional drilling penetration length, the pull strength is larger than or equalt 3*(the friction resistance generated by the pipeline in a hole and the viscous comprehensive friction resistance of the pipeline in the hole), 3 times of the safety coefficient is taken, and mud preparing, guide hole drilling, hole pre-expanding, pipe penetration treatment and pulling back are carried out. Compared with the pipe jacking construction manner, the method has the following advantages that long-distance uninterrupted penetration construction of the pipeline can be met, and the construction speed is high; destroy to the ground environment can be reduced, and the requirement of environment protection can be met; the method is not disturbed by uncertain factors such as the soil property, underground water and underground hidden pipelines, the procedures of work well construction and work pipe penetration are omitted, and time is saved; and long-distance welding and heat preservation can be carried out on the work pipe on the ground, the penetration depth is large, and the risk such as water penetration and pipe floating during river penetration is avoided.

The invention relates to a complex lining adaptive to the great deformation of adjacent rock, relating to underground engineering supporting structure. To resolve the problem that existing linings is no suitable for the evening converge and fracture deformation, the invention discloses a complex lining which includes inner layer and outer layer, the inner layer is concrete layer of thickness 30 to 200 cm and is a rigid layer, the outer layer is a filling layer filled with dirt, rock, sand, and water with a thickness of 30 -150 cm, and is a soft layer. The complex lining adapts the fracture deformation with its deformable outer layer while providing proper support to the adjacent rock protecting inner layer and supporting adjacent rock to stabilize the rock.

The double-body target ship whose float structure has power device is characterized by that it has two parallel-arranged slender round tubular ship bodies with round end, in the ship body there are partions for separating the ship body into mutually separated buoyancy tanks which are filled up with light foamed material, every ship body is respectively equipped with a power device, and said power device includes engine, propeller, rudder and remote control device. The upper portion of two ship bodies has the connecting deck for connecting two chip bodies, and said connecting deck is formed from deck tube, deck tube oblique drawbar and deck working surface, on the deck working surface the mast, standing rope and rail are set, and the deck tube is filled up with light foamed material.

The invention discloses a cosmetic grade water-based pigment composite dispersant and a production method thereof and a liquid pen using the composite dispersant. The cosmetic grade water-based pigment composite dispersant is prepared from magnesium aluminum silicate, deionized water and an amino acrylic acid (ester) copolymers. The cosmetic grade water-based pigment composite dispersant is non-toxic and non-irritating, has good economic benefits, can be used as an excellent suspending agent, can improve the effectiveness of the amino acrylic acid (ester) copolymers, can be used as a modifierand thickener for viscosity to obtain an excellent suspension effect in a lower viscosity range, and has a wide range of PH range stability.

The invention provides a barge boarding device. The barge boarding device comprises a first boarding assembly, a translation assembly, a folding and unfolding assembly, a second boarding assembly anda battery assembly, wherein the first boarding assembly is connected with a wharf and the translation assembly, the translation assembly is connected with the first boarding assembly and the second boarding assembly and used for moving the second boarding assembly in the horizontal direction, the folding and unfolding assembly is integrated with the translation assembly and used for ascending anddescending the second boarding assembly in the vertical direction, the second boarding assembly is connected with a ship and the translation assembly, and the battery assembly is electrically connected with the translation assembly and the folding and unfolding assembly and used for supplying power. The barge boarding device is advantaged in that the first boarding assembly, the translation assembly, the folding and unfolding assembly, the second boarding assembly and the battery assembly are orderly combined together, so the structure is compact, and the integration degree is high, the translation assembly ensures that the second boarding assembly is close to the ship in the horizontal direction, the folding and unfolding assembly and the translation assembly are integrated to ensure thatthe second boarding assembly is close to the ship in the vertical direction, and use requirements of small and medium-sized ships are particularly met.

The invention provides a universal flexible force-measuring component. The universal flexible force-measuring component comprises a first connecting plate, a hydraulic cylinder, an adapter, a first universal flexible member, a force-measuring sensor and a second universal flexible member which are sequentially connected with each other. According to the universal flexible force-measuring componentprovided by the invention, the two universal flexible members are arranged, so that the universal movement of the force-measuring component is realized, thus the measurement of the vector force of asix-component test bed is realized, the implementation accuracy is improved, and the structure is simple.

The invention discloses a fault-tolerant control method for a singularly perturbed system with time delay. Firstly, a singularly perturbed system with time delay is decomposed into a slow subsystem with time delay and a fast subsystem without time delay under different time scales; secondly, a simplified fault-tolerant controller is designed for the slow subsystem with time delay, and a state feedback controller is designed for the fast subsystem without time delay; and finally, the simplified fault-tolerant controller and the state feedback controller are integrated to get a fault-tolerant controller for the whole singularly perturbed system with time delay. The fault-tolerant control method of the invention can make compensation for a sensor fault in a singularly perturbed system with time delay quickly and effectively.

The invention discloses a detecting device for deformation joint leakage of circular tunnels. The device is detachably arranged at an expansion joint provided with a water stop piece in an embedded manner and located between two circular tunnels, and the detecting device comprises an annular rubber band, an air pressure detecting device and two sets of annular tooth-type connecting steel plates, wherein reverse screw devices are fixed at several joints of each set of tooth-type connecting steel plates, the tooth-type connecting steel plates are pushed by the reverse screw devices to move inthetangential direction at the toothed connecting port such that the tooth-type connecting steel plates can tightly support the annular rubber band onto the inner sides of the circular tunnels, the annular rubber band is provided with an inflation valve, and the air pressure detecting device is connected to the inflation valve through a conduit to detect the air pressure in the sealed space formed by the water stop piece, the expansion joint and the annular rubber band. The detecting device can be used to effectively confirm which section of the expansion joint of the hydraulic tunnels is damaged, and avoid the loss on the human and material resources brought about by large-scale inspection of the hydraulic tunnels.

The three-body target boat with float structure has three, one main and two auxiliary, parallel hulls, which are separated with partition boards into separate buoyancy compartments filled with light foamed material; deck to connect three hulls, which consists of parallel connecting pipes perpendicular to hulls and deck surface of metal plate or wooden board; mast; pull rope and guardrails. The target boat has float structure and thus powerful hit resistance.

The invention provides a flexible extrapolation method under out-of-step center machine group intrusion based on thyristor controlled series compensation parameter adjustment. The method is characterized by, under the internal scene of out-of-step center machine group intrusion, calculating system voltage distribution, determining an out-of-step center position coefficient equation, calculating and adjusting reactance parameters of a TCSC (thyristor controlled series compensation) device, verifying non-parallel resonance and transient stability of the system, determining a specific trigger angle adjustment scheme of the TCSC device and realizing out-of-step center machine group extrapolation. The method is a flexible control strategy without loss of units and load, is simple and reliable in principle and does not cause system instability, and is easy to realize in electric power engineering.

The invention discloses a high-ground-stress large-deformation tunnel release-resistance combined primary support system and a construction method. The system comprises a primary support body which isa steel arch frame and an anchor net spraying combined support system matched with the steel arch frame, the primary support body is provided with a plurality of stress release windows in the side wall section of a tunnel, and the stress release windows located on each side of the primary support body are arranged at intervals in the longitudinal direction of the tunnel. The invention further discloses a construction method of the high-ground-stress large-deformation tunnel release-resistance combined preliminary support system. The system and method have the beneficial effects that non-synchronous deformation of surrounding rock and the primary support body is achieved, deformation of a portion, with a maximum deformation, of the primary support body before the primary support body is looped is effectively reduced, and damage to the primary support body before the primary support body is looped is avoided.

The invention discloses a pipeline compensator with an inner support. The pipeline compensator with the inner support comprises a corrugated pipe body, wherein connecting flanges are fixedly arrangedat two ends of the corrugated pipe body, a bracket is fixedly connected to the inner surface of each connecting flange, connecting rings are fixedly connected to one sides, close to each other, of thetwo brackets, and one ends, close to each other, of the two connecting rings are hooked together. The pipeline compensator with the inner support is compact in structure, good in compensation performance and free of instability.

The invention discloses a bridge car. The bridge car is operated by a plurality of bridge pier tops being specially provided with electric I-shaped wheel type rollers to support and push a single-segment carriage with a rigid length greater than 2A, wherein an adjacent interval A of the bridge pier tops is over 10 meters, and occupied ground is less and no bridge body stretches across to obstructscenery. The bridge car is much cheaper than the bottom surface of a carriage with short rail tracks so as to be constructed straight and strong, and people and objects inside of the car are protectedto be safer and more comfortable. The bridge car is in contact with the rollers downwards so that foreign matters and dust which are adhered to the bridge car can be greatly reduced. Even driving toa turnout, a direction choosing roller which hangs down only from one side of the carriage can be used for crossing the outer side of a guide rod fixedly connected to the outer surface of a bearing atthe side end of a roller table to restrict the car from entering the turnout on the side. A plate turnout and a centimetre-wide turnout seam are disconnected. Caterpillar bands are wound between thebridge car and the rollers in a padding mode, and a cushion is easily added at the bottom of the bridge car to enable the operation more stable and efficient. Even the length of the carriage can be reduced to 1.5A to A to save money, the total cost and technical difficulty are close to ordinary trains, and no magnetic pollution of magnetic suspension or delikatny is achieved. The speed per hour can reach nearly 600,000 meters, and the distance to home after debarkation is far closer than an airport. A plurality of support-rod-type brakes are arranged at the bottom of the bridge car to supportthe bridge car to perform emergency brake by separating from the rollers. No driving device needs to be arranged in the carriage to reduce sources of danger.

The invention discloses a grinding roller pressurization device for a vertical mill. The grinding roller pressurization device for the vertical mill comprises a compression roller component, a supporting device, a pressurization oil cylinder and an overhaul oil cylinder. The invention aims to provide the grinding roller pressurization device for the vertical mill which can overcome the disadvantages. During grinding, the hydraulic thrust vertically acts on a grinding roller pressurization rod, and oil flows into an operating travel rodless cavity to reduce oil supply pressure, hydraulic leakage and wear, and idle work loss of diagonal tension and member loads; and according to different motion requirements of grinding working condition and overhaul working condition on a grinding roller, the pressurization rod and a pressurization rod supporting plate are in hinged connection and in rigid connection, the pressurization rod supporting plate and a pressurization rod supporting base are in hinged connection and rigid connection, and the two modes correspond to each other in a staggered way, so that the load requirements of the supporting device during grinding are met, the turning space when the grinding roller is overhauled is also reduced, and the manufacturing cost of the vertical mill is reduced. The invention belongs to the field of technical equipment of powder engineering, and is applied to grinding materials of vertical mills.