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65results about How to "Not easy to insert" patented technology

Slow-release polycarboxylate superplasticizer and preparation method thereof

The invention discloses a slow-release polycarboxylate superplasticizer and a preparation method thereof. The preparation method comprises specific steps as follows: firstly, small unsaturated carboxylic acid monomers and diphenylphosphinyl chloride are subjected to a partial reaction, and small unsaturated monomers containing phosphate ester groups are obtained; then 2-phenylethylamine and phosphate ester groups are added to a reaction system and subjected to a reaction, and small unsaturated monomers containing amide groups are obtained; the small unsaturated monomers containing the amide groups are subjected to an oxidation-reduction free radical polymerization reaction with unsaturated polyether macromonomers under the action of an initiating agent, a reducing agent and a chain transfer agent, and a copolymerization product is obtained; pH value is adjusted to 6-7 after the reaction, water is added, and the polycarboxylate superplasticizer is obtained. The amide groups containing benzene rings are introduced to side chains of the prepared polycarboxylate superplasticizer, so that the dispersibility of the polycarboxylate superplasticizer for cement is improved, the polycarboxylate superplasticizer has good slump retaining performance on the premise of water reduction, and besides, the yield of the polycarboxylate superplasticizer containing the amide groups can reach 94% or higher.
Owner:JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD

Assembled buckle structure

The invention relates to an assembled buckle structure which comprises a substrate (2) to be inserted in a decorative strip (1). The lower end surface of the substrate (2) is provided with a clamping part which is clamped in a mounting hole (31) of a counterpart piece (3). The assembled buckle structure is characterized in that the clamping part comprises a plurality of elastic strips (4) which extend downwards and are arranged at intervals, the elastic strips are encircled into a loop matched with the shape of the mounting hole on the counterpart piece, and the lower part at the outer side of each elastic strip is provided with clamping pins (41) which protrude outwards and gradually expand from bottom to top; and a bolt (5) is inserted from bottom to top in the space encircled by the elastic strips, and the peripheral surface of the bolt acts on the inner end surfaces of the elastic strips so that the elastic strips keep the outwards bracing trend. Because of the favorable elasticity of the elastic strips, the interference between the clamping pin size and the mounting hole is smaller, the elastic strips can be inserted in the mounting hole by only needing small inserting force, and the peripheral surface of the bolt can brace the elastic strips outwards so that the elastic strips are clamped in the mounting hole and hardly drawn out.
Owner:NINGBO XINTAI MACHINERY

Steel-wood combining constructional column formwork and construction method thereof

The invention discloses a steel-wood combining constructional column formwork and a construction method thereof. The steel-wood combining constructional column formwork comprises a constructional column wood formwork and a steel formwork arranged on the constructional column wood formwork, the constructional column wood formwork is fixed to the outer side of a constructional column through doublesteel pipes and split bolts, and wall bodies are arranged on the two sides of the constructional column. The steel formwork comprises a steel formwork body, two parallelly-arranged triangular bafflesand a supporting plate fixed to the steel formwork body through hinges; the steel formwork body is of a U-shaped axis symmetric structure, the two vertical parts are two lug plates, and the transversepart is a connecting plate; the supporting plate is arranged in a groove of the steel formwork body; the supporting plate and the connecting plate are connected and fixed through hinges; the supporting plate has the same thickness as the steel formwork body; openings are formed in the positions, closely attached to the upper corners in the two corners of the lug plates, of the two triangular baffles; blocking rod clamping grooves are formed through enclosing and fixing of the openings and the lug plates; and a blocking rod for blocking and fixing of the supporting plate is erected between thetwo blocking rod clamping grooves. The steel-wood combining constructional column formwork and the construction method thereof have good practical and popularization value, and can generate good economic benefits after extensive application and popularization.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Cold-rolling strip steel threading method

The invention discloses a cold-rolling strip steel threading method, which belongs to the field of strip steel rolling. The cold-rolling strip steel threading method comprises the steps of (1) being in no hurry to pull a strip tail over a rolling mill after the rolling of a previous strip steel is completed and the strip tail is separated from a jaw; (2) carrying out feeding operation of a next strip steel by an uncoiling worker, and feeding the head part of the next strip steel to the outer side of an inlet oil scraper roller of the rolling mill; (3) enabling the uncoiler running speed V (uncoiling) to be equal to the rolling mill running speed V (rolling mill) after the tail part of the previous strip steel and the head part of the next strip steel are in up-and-down lap joint; (4) stopping the feeding by the uncoiling worker when the head part of the next strip steel reaches to the position of an outlet guide roller of the rolling mill by successfully penetrating through the rolling mill along with the tail part of the previous strip steel; and (5) coiling the tail part of the previous strip steel, and coiling the tail part of the previous strip steel to a steel coil. According to the cold-rolling strip steel threading method disclosed by the invention, a cold-rolling strip steel is prevented from being firstly inserted in a roller seam clearance between a working roller of the rolling mill and an intermediate roller or under an oil spray guide plate during a twenty-high rolling mill threading process, and successful threading operation is realized.
Owner:SHANXI TAIGANG STAINLESS STEEL CO LTD

High-impedance coaxial connector for sensor

The invention discloses a high-impedance coaxial connector for a sensor. One end of a main seat is matched with a glass tube in a locked mode, the other end of the main seat is matched with a contact connecting cap in a locked mode, a contact outer ring comprises a male contact outer ring butt-joint seat and a male contact outer ring body which are arranged in sequence from outside to inside in a coaxial mode, the glass tube is sleeved with and coaxial with the male contact outer ring butt-joint seat, a wire passing hole is formed in the axis of the male contact outer ring body, a male contact inner core is located inside the male contact outer ring body, a first tin inlet is formed in the side wall, corresponding to the wire passing hole, of the male contact inner core, the first tin inlet is communicated with the wire passing hole, a reference lead is fixedly connected with the inner wall of the male contact outer ring butt-joint seat, and a measurement lead extends into the wire passing hole and is connected with the male contact inner core. After being assembled, the glass tube and a male contact form a coaxial assembly, angular defection cannot occur, after the high-impedance coaxial connector is connected, the waterproof and dustproof performance can reach level IP168, and the connector is convenient and fast to disassemble and assemble. The reference lead does not need to be bent, and the service life of the sensor is prolonged.
Owner:河北科瑞达仪器科技股份有限公司

Optical module

The invention provides an optical module which comprises an upper shell, a lower shell, an optical engine, an optical port bracket and an optical fiber adapter, the upper shell covers the lower shell, the upper shell and the lower shell form a containing cavity, and the optical engine is arranged in the containing cavity; first limiting pieces are symmetrically arranged at one end of the upper shell, and second limiting pieces are symmetrically arranged at one end of the lower shell; the side face, facing the upper shell, of the optical port bracket is in press fit connection with the upper shell, and the two opposite side faces of the optical port bracket abut against and are fixedly connected with the first limiting pieces. Limiting bosses are arranged on the two side faces, connected with the first limiting piece, of the optical port bracket respectively, and the limiting bosses abut against the second limiting piece. One end of the fiber adapter is connected with the optical engine, and the other end is inserted into the optical port bracket. The optical port bracket is separated from the lower shell, and the optical port bracket is fixedly installed on the upper shell through the first limiting piece, so that the installation tolerance of the optical engine is absorbed when the optical port bracket is installed on the upper shell, and the problem that the installation tolerance of the optical engine is complex is solved.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

Device for determining pomegranate freezing point and operating method of device

The invention relates to a device for determining the pomegranate freezing point. The device comprises a freezing chamber, a copper-constantan thermal couple, a 0-degree constant-temperature device, a multi-channel microvolt-level data collecting and processing device, a computer and a concave groove, wherein the copper-constantan thermal couple is provided with a measuring head; the concave groove is put into the freezing chamber; the measuring head penetrates through the bottom of the concave groove; the rear end of the measuring head is wrapped by a tubular column which is movably arranged on the bottom of the concave groove via a connecting element and enables the measuring head to be smoothly inserted into pomegranate fruit. According to the invention, the arrangement of the concave groove is beneficial to the fixing of the pomegranate fruit, so that the measurement result is relatively precise; the arrangement of the tubular column is beneficial to the insertion of the measuring head into the pomegranate fruit; the measuring head is very small, is extremely low in thermal inertia, is flexible in response, and damages the original state of a tested tissue minimally, so that the measuring head measures temperature accurately, and has the advantage of simplicity, convenience, rapidness and accuracy.
Owner:SHANDONG INST OF POMOLOGY +1

Medical peristaltic pump tube

The invention relates to a medical peristaltic pump tube which belongs to the field of medical devices, the technical essentials include an inlet tube with a puncture needle, an outlet tube fitted with a venous needle and an extension tube, wherein the two ends of the elongated pipe are respectively communicated with the liquid inlet pipe and the liquid outlet pipe through a connecting assembly, the connection assembly includes a threaded head fixed at one end of the discharge tube away from the venous needle and at one end of the elongated tube, and a threaded sleeve fixed on the other end ofthe elongated tube and the end of the inlet tube away from the puncture needle. A drip bucket and a flow regulator are arranged on the liquid inlet pipe, a pump pipe body made of silica gel is arranged between the extension pipe and the liquid inlet pipe, one end of the pump pipe body is threadably connected with a screw head on the extension pipe, and the other end of the pump pipe body is inserted and connected with the screw sleeve on the liquid inlet pipe through a plug and fixed by a fixing assembly. The invention has the advantages that the pump pipe body and the infusion pipe are tightly and fixedly connected, and the separation between the pump pipe body and the infusion pipe is avoided.
Owner:BEIJING SHIJITAN HOSPITAL CAPITAL MEDICAL UNIVERSTY

A kind of strip threading method of cold-rolled steel strip

The invention discloses a cold-rolling strip steel threading method, which belongs to the field of strip steel rolling. The cold-rolling strip steel threading method comprises the steps of (1) being in no hurry to pull a strip tail over a rolling mill after the rolling of a previous strip steel is completed and the strip tail is separated from a jaw; (2) carrying out feeding operation of a next strip steel by an uncoiling worker, and feeding the head part of the next strip steel to the outer side of an inlet oil scraper roller of the rolling mill; (3) enabling the uncoiler running speed V (uncoiling) to be equal to the rolling mill running speed V (rolling mill) after the tail part of the previous strip steel and the head part of the next strip steel are in up-and-down lap joint; (4) stopping the feeding by the uncoiling worker when the head part of the next strip steel reaches to the position of an outlet guide roller of the rolling mill by successfully penetrating through the rolling mill along with the tail part of the previous strip steel; and (5) coiling the tail part of the previous strip steel, and coiling the tail part of the previous strip steel to a steel coil. According to the cold-rolling strip steel threading method disclosed by the invention, a cold-rolling strip steel is prevented from being firstly inserted in a roller seam clearance between a working roller of the rolling mill and an intermediate roller or under an oil spray guide plate during a twenty-high rolling mill threading process, and successful threading operation is realized.
Owner:SHANXI TAIGANG STAINLESS STEEL CO LTD
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