Abstract: The present invention discloses a multifunctional folding spade, which comprises a spade plate and a spade handle, a turntable is welded at the tail end of the spade plate, a spade handle sleeve is provided at the head end of the spade handle, a socket is provided at the head end of the spade handle sleeve, a part of the turntable body is inserted into the socket, the turntable and the spade handle sleeve are provided with matching rotation holes, and a pin shaft passes through the rotation holes to realize the rotating connection between the turntable and the spade handle; the turntable body is further provided with a plurality of angle adjusting holes circumferentially, a locking hole is provided with at the tail end of the spade handle sleeve correspondingly, a locking bolt is provided at one side of the locking hole.

Abstract: A method in which a plurality of transmit signals are generated at data rates that are offset from each other by inserting an idle data block into a data stream for one or more transmit signals of the plurality of transmit signals to increase a data rate for the one or more transmit signals, thereby minimizing detectable electromagnetic interference at a particular frequency. The method further includes converting each transmit signal of the plurality of transmit signals to a corresponding optical transmit signal of a plurality of optical transmit signals for transmission via a corresponding channel of a plurality of channels of an optical network device and transmitting the plurality of optical transmit signals via respective ones of the plurality of channels for transmission on respective optical fibers.

Abstract: The present invention discloses a multifunctional folding spade, which comprises a spade plate and a spade handle, a turntable is welded at the tail end of the spade plate, a spade handle sleeve is provided at the head end of the spade handle, a socket is provided at the head end of the spade handle sleeve, a part of the turntable body is inserted into the socket, the turntable and the spade handle sleeve are provided with matching rotation holes, and a pin shaft passes through the rotation holes to realize the rotating connection between the turntable and the spade handle; the turntable body is further provided with a plurality of angle adjusting holes circumferentially, a locking hole is provided with at the tail end of the spade handle sleeve correspondingly, a locking bolt is provided at one side of the locking hole.

Abstract: A wheel press mounting device includes a rack, a servo motor, a synchronous belt, a working table, a base, a thrust bearing, a bearing pedestal, a shaft, a mandrel, hydraulic cylinders, a floating locating pin, strong magnets, floating shafts and a clamp platform.

Abstract: A wheel spinning flash cutting device includes a rack, a turnover cylinder, a connection rod, a top plate, a first guide rail, a sliding plate, bearing pedestals, first shafts, rollers, a clamping cylinder, a first motor, a belt wheel, a base, a synchronous belt, second shafts, second rails, a support, a cutting blade, a second motor, a feed cylinder and a bracket.

Abstract: A wheel press mounting device includes a rack, a servo motor, a synchronous belt, a working table, a base, a thrust bearing, a bearing pedestal, a shaft, a mandrel, hydraulic cylinders, a floating locating pin, strong magnets, floating shafts and a clamp platform.

Abstract: A wheel spinning flash cutting device includes of a rack, a turnover cylinder, a connection rod, a top plate, a first guide rail, a left sliding plate, bearing pedestals, left shafts, rollers, a clamping cylinder, a first motor, a belt wheel, a right base, a synchronous belt, right shafts, second rails, a support, a cutting blade, a second motor, a feed cylinder and a bracket.

Abstract: Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer.

Abstract: Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer.

Abstract: A catalyst for synthesizing 1-hexene from ethylene trimerization and its application are provided. Said catalyst consists of (a) the compound containing P and N, (b) electron donor, (c) Cr compound, (d) carrier and (e) accelerator. The molar ratio of (a), (b), (c), (d) and (e) is 0.5-100:0.5-100:1:0.5-10:50-5000. The catalyst is prepared by mixing the components of (a)-(e) in an ethylene trimerization apparatus in situ and ethylene is introduced into the apparatus continuously. The prepared catalyst can be used to synthesize 1-hexene from ethylene trimerization in the inert solvents. The trimerization is performed at 30-150° C. and 0.5-10.0 MPa for 0.1-4 hours. The catalyst has high catalytic activity and high 1-hexene selectivity. During the process of ethylene trimerization, by-product polyethylene does not stick to the apparatus.

Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 M of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.

Abstract: Disclosed is a method for preparing 1-octene in the presence of a catalyst system for ethylene oligomerization, which includes: premixing a part of ethylene gas as raw material with a solvent, mixing with the components a+b, c and d of the catalyst system, and then sending in a reactor; directly sending the rest of ethylene gas in the reactor; discharging the resultant liquid from the upper part of the reactor into an overflow channel; adding a catalysis stopping agent to the overflow channel; and then separating the resultant liquid. The advantages of the method are high selectivity of 1-octene and high catalytic activity.

Abstract: A catalyst for synthesizing 1-hexene from ethylene trimerization and its application are provided. Said catalyst consists of (a) the compound containing P and N, (b) electron donor, (c) Cr compound, (d) carrier and (e) accelerator. The molar ratio of (a), (b), (c), (d) and (e) is 0.5-100:0.5-100:1:0.5-10:50-5000. The catalyst is prepared by mixing the components of (a)-(e) in an ethylene trimerization apparatus in situ and ethylene is introduced into the apparatus continuously. The prepared catalyst can be used to synthesize 1-hexene from ethylene trimerization in the inert solvents. The trimerization is performed at 30-150° C. and 0.5-10.0 MPa for 0.1-4 hours. The catalyst has high catalytic activity and high 1-hexene selectivity. During the process of ethylene trimerization, by-product polyethylene does not stick to the apparatus.

Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 mol of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion rate of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.

Abstract: The present invention relates to a catalyst composition for ethylene oligomerization and the use thereof. Such catalyst composition includes chromium compound, ligand containing P and N, activator and accelerator; wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and Cr(2-ethylhecanoate)3; general formula of the ligand containing P and N is shown as: in which R1, R2, R3 and R4 are phenyl, benzyl, or naphthyl. R5 is isopropyl, butyl, cyclopropyl, cyclopentyl, cyclohexyl or fluorenyl; the activatior is methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and/or butyl aluminoxane; the accelerator is selected from the group consisting of 1,1,2,2,-tetrachloroethane, 1,1,2,2-tetrabromoethane, 1,1,2,2-tetrafluoroethane, and compounds having a formula of X1R6X2, in which X1 and X2 are F, Cl, Br, I or alkoxyl, R6 is alkylene or arylene group; the molar ratio of chromium compound, ligand containing P and N, activator and accelerator is 1:0.

Abstract: The present invention relates to a catalyst composition for ethylene oligomerization and the use thereof. Such catalyst composition includes chromium compound, ligand containing P and N, activator and accelerator; wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and/or Cr(2-ethylhecanoate)3; general formula of the ligand containing P and N is shown as: in which R1, R2, R3 and R4 are phenyl, benzyl, or naphthyl. R5 is isopropyl, butyl, cyclopropyl, cyclopentyl, cyclohexyl or fluorenyl; the activatior is methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and/or butyl aluminoxane; general formula of the accelerator is X1R6X2, in which X1 and X2 are F, Cl, Br, I or alkoxyl, R6 is alkyl or aryl; the molar ratio of a, b, c and d is 1:0.5˜10:50˜3000:0.5˜10.