62results about How to "Reduce the impact of force" patented technology

The invention discloses a water-soluble antibacterial monocarboxylic chitosan as well as a preparation method and application thereof. The preparation method of the monocarboxylic chitosan is characterized by comprising the following steps: dissolving macromolecular chitosan in a diluted acetic acid solution, and then selectively oxidizing part or all of hydroxyl groups at the C6 site of the chitosan into carboxyl groups by utilizing a concentrated nitric acid-concentrated phosphoric acid-sodium nitrite system, thereby obtaining the monocarboxylic chitosan. The water-soluble antibacterial monocarboxylic chitosan disclosed by the invention can be used for carrying out amide modification on real silk fabrics so as to obtain monocarboxylic chitosan amide modified real silk fabrics. The method disclosed by the invention is simple in operation, high in reaction speed and easy to control, the prepared monocarboxylic chitosan amide modified real silk fabrics have lasting and efficient antibacterial activity and good wearability and are environment-friendly, and the negative effects on good real silk characteristics and human health caused by using chemical crosslinking agents in conventional chitosan modification are overcome.

The invention discloses a cat-head type tower for a one-way overhead line cable T joint. The cat-head type tower comprises a tower body, ground wire cross arms, middle-phase wire cross arms, side-phase wire cross arms, upper-layer cable auxiliary cross arms and lower-layer cable auxiliary cross arms; the two layers of ground wire cross arms are located on the uppermost portion of the tower body, arranged to be perpendicular to the line direction and used for hanging ground wires; the middle-phase wire cross arms are located under the ground wire cross arms, V-shaped suspension strings are fixed to the inner upper portions of the middle-phase wire cross arms and used for hanging middle-phase wires, and double-I-type downward cable leading terminals are arranged under wire hanging points arranged in the middle-phase wire cross arms. The cat-head type tower for the one-way overhead line cable T joint has the advantages that the cable T joint is achieved by adopting one base tower, the building cost is low, small area is occupied, little influences on stress of adjacent poles and towers are generated, an original line arrangement mode is not changed, adjacent tower transformation is generally not needed, and the cat-head type tower is suitable for building adjacent linear towers and tension-resistant towers.

The present invention relates to a system (110) and a method for sorting a plurality (112) of seed grains (114). The system (110) comprises an individualizing device (120), a sampling device (132) for introducing the individualized seed grain (114) into a measuring device (136) for the classification of the individualized seed grain (114), a receiving device (146, 200) for receiving the classified seed grain (114) and also a transporting device (118, 124, 134, 144, 152) for the at least partially pneumatic transport of the seed grain (114).

The invention also relates to the sampling device (132), which comprises an outer tube (160) for receiving the sampling device (132) into the measuring device (136), a sample chamber (138) of the measuring device (136) being provided within a volume (164) of the outer tube (160). The sampling device (132) also comprises an inner tube (162), which is inserted in the outer tube (160) and has a lower opening (166), whereby the individualized seed grain (114) can be introduced into the volume (164) of the outer tube (160). An intermediate space (170) formed between the outer tube (160) and the inner tube (162) is designed in such a way that the individualized seed grain (114) can be discharged by pneumatic means out of the outer tube (160) through the inner tube (162) into a receiving device (146, 200) for the classified seed grain (114).

The system (110) is suitable as an automated high-throughput sorting of seed grains (114) by using the measuring device (136) that is designed for investigations of the seed grains (114) by means of a method of nuclear magnetic resonance (140) and/or an optical measuring method.

A hold hoop type automatic leveling and anchoring device for replacement of steel pipe concrete arch bridge suspenders comprises upper cross beams, tensioning-end anchorage devices I and II, upper and lower temporary ropes, transfer beams, fixed-end anchorage devices I and II,lower supporting beams and two hold hoop type arch apex anchoring and anti-slip systems installed on a steel pipe concrete arch bridge arch, wherein each hold hoop type arch apex anchoring and anti-slip system consists of two rotary lifting appliances, an anti-slip steel box, an upper cross beam, an anti-slip hold hoop and a rubber pad. In a working state, the upper and lower temporary ropes respectively penetrate through the upper cross beam or the lower transfer beam and a jack and are anchored by using the tensioning-end anchorage devices I and II and the fixed-end anchorage devices I and II, and the lower supporting beams support the lower surfaces of suspender cross beams. The rubber pads are arranged between the anti-slip hold hoops and the side faces of the steel pipe arch, the lower-portion cambered surfaces of the anti-slip steel boxes are fixedly connected with the anti-slip hold hoops, one side of each upper-layer #-shaped structure of the upper cross beams tightly attaches to the side face of the corresponding anti-slip steel box, and the other side of each structure is in bolted connection with the corresponding anti-slip steel box through high-strength screws. The hold hoop type automatic leveling and anchoring device is simple in structure, smaller in size, simple and convenient to construct and high in work efficiency.

The invention discloses a new corn header, comprising a corn snapping platform and a stem cutting and feeding device. The invention is characterized in that, the corn snapping platform comprises a corn snapping device and an ears conveying device fixedly connected with each other; the stem cutting and feeding device comprises a stem cutting device and a stem feeding device fixedly connected with each other; the corn snapping platform and the stem cutting and feeding device are respectively hinged at the front part of the body of a corn harvester; a header rotary device used to promote the rotation and the lifting of the corn header is arranged between the stem cutting and feeding device and the body; a header differential device capable of promoting the rotation and the lifting of the corn snapping platform is arranged between the corn snapping platform and the stem cutting and feeding device. The corn header has the advantages that, corn ears snapping and stem cutting are realized at the same time; the structure is compact; corn ears snapping and stem cutting are controlled respectively, so operation, assembling and maintenance are facilitated.

The invention relates to the technical field of extrusion forming equipment, in particular to a tile-type combined roller cover. The tile-type combined roller cover comprises a roller cover block, roller cover hoops, screw rod fasteners, roller cover keys and a roller shaft. The roller cover block is provided with pillow-shaped concave bags which are arranged in a honeycomb mode, bosses with a taper are arranged at two sides of the roller over block, a concave-convex mortise and tenon structure is arranged on the inner arc surface, and key grooves are formed in the inner arc surface; the roller cover hoops are provided with bosses with a taper, and grooves are formed in the position, corresponding to the roller cover keys, of the inner arc face; each screw rod fasteners comprises a long screw rod penetrating through the roller cover and the roller cover hoops at two ends, and comprises hexagonal nuts and cover-type nuts which are arranged at two ends; each roller cover key is providedwith a stepped hole for containing a hexagon socket cap screw; and the roller shaft is provided with an annular groove for installing the roller cover block, two groups of tile-type combined roller covers are installed, the key grooves for the roller cover keys are arranged in the groove, and a threaded hole is formed in the center of the bottom of each key groove.

The invention relates to a replacing or newly-added fabricated balcony structure for old houses and a construction method of the replacing or newly-added fabricated balcony structure to mainly solve the technical problems that existing old residence communities are not provided with balconies, and balconies need to be added. The replacing or newly-added fabricated balcony structure comprises a primary structure and further comprises a newly-added fabricated balcony structure body connected with an external wall lower ring beam of the primary structure in an anchored mode. The newly-added fabricated balcony structure body comprises a newly-added column foundation, newly-added steel stand columns, a newly-added prefabricated concrete balcony plate, newly-added steel handrails and newly-addedglass baffles, wherein the newly-added prefabricated concrete balcony plate is arranged on the outer side of an external wall lower ring beam of the primary structure of each layer in a connected mode, the newly-added steel stand columns are arranged at the outer side end of the newly-added prefabricated concrete balcony plate in a connected mode, and connecting pieces are arranged between the newly-added steel stand columns and the newly-added prefabricated concrete balcony plate of each layer. The replacing or newly-added fabricated balcony structure has the remarkable advantages that the newly-added fabricated balcony is easy and convenient to build, the work period is short, and construction is free and flexible.

The invention discloses a tracheal intubation fixing apparatus for anesthesia departments. The tracheal intubation fixing apparatus comprises a fixing seat, an upper fixing sheet slide seat and bandage fixing seats. The upper fixing sheet slide seat is slidably connected onto the fixing seat, the bandage fixing seats are positioned on the outer side of the fixing seat and are detachably connectedwith the fixing seat, a cannula groove, a sputum suction hole and an upper fixing sheet slide groove are formed in the fixing seat, and a sponge pad, an upper tooth pad, a lower tooth pad and bandageclamp seats are arranged on the fixing seat; an upper fixing sheet and a lower fixing sheet are arranged at the front of the fixing seat. The tracheal intubation fixing apparatus has the advantages that the upper fixing sheet can slide by the aid of a spring by a certain distance, and accordingly cannulas can be conveniently preliminarily clamped; a fastening clamp sheet arranged on the upper fixing sheet can be clamped with the lower fixing sheet, accordingly, the cannulas can be fixed and constrained without influence on vision of patients, influence on stress of devices can be reduced in fixing procedures, and the cannulas can be conveniently fixed.

The invention relates to a connected building. The connected building comprises main frame structures, orridor structures, longitudinal limiting components and transverse limiting components; two or more main frame structures are arranged side by side, the corridor structures are arranged between every two adjacent main frame structures, and the ends of the corridor structures are in lap joint with the main frame structures through buffer limiting structures; the longitudinal limiting components are arranged on the side edges of the buffering limiting structures and used for limiting longitudinal translation of the corridor structures in the length direction; the transverse limiting components are arranged on the side edges of the buffering limiting structures and used for limiting transverse translation of the corridor structures in the width direction; and the limiting directions of the two longitudinal limiting components located at the two ends of the corridor structures are opposite, and the limiting directions of the two transverse limiting components located at the two ends of the corridor structures are opposite. According to the connected building, the corridor structuresdo not affect the main frame structures, can be firmly connected with the main frame structures and are not prone to falling off from the main frame structures.

The invention relates to a micro-injection electronically-controlled fuel injector with a pressure-maintaining structure. According to the micro-injection electronically-controlled fuel injector, an upper fuel cavity as well as a main fuel inlet channel, a main fuel return channel, a fuel inlet channel and a fuel return channel which communicate with the upper fuel cavity are formed in the upper body of the fuel injector; the lower body of the fuel injector is connected to the lower end of the upper body of the fuel injector through a fuel injector fastening nut, a lower fuel cavity is formed in the lower body of the fuel injector, and the lower fuel cavity communicates with the main fuel return channel; a nozzle member is connected to the lower end of the lower body of the fuel injector through a nozzle fastening nut and communicates with the lower fuel cavity, and further communicates with a main fuel channel penetrating through the lower body of the fuel injector; and an electromagnetic valve is connected to the left side of the upper part of the upper body of the fuel injector through an electromagnetic valve fastening nut, one end part of a control valve element of the electromagnetic valve stretches in the upper fuel cavity, and the other end part of the control valve element is abutted against an electromagnetic valve return spring arranged at the central part of an electromagnet. According to the micro-injection electronically-controlled fuel injector disclosed by the invention, a fuel inlet process and a fuel return process can be mutually independent, so that the influence of the mutual interference of fuel flowing in the fuel inlet process and the fuel return process on a fuel injection process is avoided; and the opening speed of a needle valve can be increased, so that the injection characteristic of a micro-injection fuel system is improved.