Patents by Inventor Changhai Li
Changhai Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240147906Abstract: An outdoor moving device includes a main body, a first energy storage device, a second energy storage device, and a connection assembly. The first energy storage device is capable of supplying power to the outdoor moving device and includes at least one first energy storage unit. The second energy storage device is capable of supplying power to the outdoor moving device and includes at least one second energy storage unit. The connection assembly is used for mounting the second energy storage device to the main body. The first energy storage device is detachably mounted to the main body, the first energy storage device is detachable from the main body to supply power to another power tool, the first energy storage unit includes a first positive electrode made of a first material, and the second energy storage unit includes a second positive electrode made of a second material.Type: ApplicationFiled: January 10, 2024Publication date: May 9, 2024Inventors: Dezhong Yang, Yangzi Liu, Li Li, Ju Li, Changhai Lu
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Patent number: 11917945Abstract: An outdoor moving device includes a main body, a first energy storage device, a second energy storage device, and a connection assembly. The first energy storage device is capable of supplying power to the outdoor moving device and includes at least one first energy storage unit. The second energy storage device is capable of supplying power to the outdoor moving device and includes at least one second energy storage unit. The connection assembly is used for mounting the second energy storage device to the main body. The first energy storage device is detachably mounted to the main body, the first energy storage device is detachable from the main body to supply power to another power tool, the first energy storage unit includes a first positive electrode made of a first material, and the second energy storage unit includes a second positive electrode made of a second material.Type: GrantFiled: February 17, 2023Date of Patent: March 5, 2024Assignee: Nanjing Chervon Industry Co., Ltd.Inventors: Dezhong Yang, Yangzi Liu, Li Li, Ju Li, Changhai Lu
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Patent number: 11912657Abstract: A low sulfur diesel blockage inhibitor as shown in formula (I), a preparation method therefor, and use thereof are provided. In formula (I), x and y are each an integer between 0 and 4; m and n are each selected from H, a C1-C6 linear or branched alkyl group, or a C3-C6 cycloalkyl group. By using a vegetable oil as a raw material, a modified vegetable oil fatty acid is first obtained, and then a polar group of an unsaturated dialdehyde with a certain chain length is introduced into a molecular chain of the modified vegetable oil fatty acid.Type: GrantFiled: December 31, 2019Date of Patent: February 27, 2024Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS CO., LTD.Inventors: Lanpeng Li, Changhai Cao, Jin Cheng, Xiuzheng Li, Yidi Wang
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Patent number: 11370247Abstract: An automobile hub with a hollow rim includes a wheel disc and the rim with at least one hollow cavity, in which the rim includes at least two mutually nested rings and an axial end cap at the same ends of the at least two rings, and the hollow cavity consists of the rings and the axial end cap. The outer side of one end of the wheel disc includes axial rim mounting grooves, and the rim is inserted into the rim mounting grooves and fixed to the wheel disc through the end without the axial end cap. By employing the automobile hub with the hollow rim, the hub assembling method, and the automobile having the hub, the weight of the hub can be further reduced, and the hub has sufficient strength.Type: GrantFiled: August 23, 2019Date of Patent: June 28, 2022Assignee: CITIC Dicastal CO., LTD.Inventors: Chuan Cheng, Changhai Li, Xu Wang, Hongbiao Li, Lin Zhu, Zhen Li, Yule Zhou
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Patent number: 11338613Abstract: A wheel and a rim with weight reduction sockets are provided. The rim includes an inner flange, a middle portion and an outer flange, the inner flange, middle portion and outer flange are all annular and are connected end to end to form a cylindrical rim, in which the middle portion of the rim includes weight reduction sockets; and the weight reduction sockets are of regular hexagons, and are arranged adjacently on the outer side of the middle portion of the rim in the shape of a honeycomb. The weight of the hub is reduced by designing the weight reduction sockets in a specific shape for the outer rim of the hub and selecting the size of the weight reduction sockets.Type: GrantFiled: November 30, 2018Date of Patent: May 24, 2022Assignee: CITIC DICASTAL CO., LTD.Inventors: Zuo Xu, Zhen Li, Xu Wang, Kaiqing Wang, Yule Zhou, Chuan Cheng, Changhai Li, Tiefeng Hu, Hui Chi
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Patent number: 11338614Abstract: A wheel and a rim with weight reduction sockets are provided. The rim is made of an aluminum alloy and includes an inner flange, a middle portion and an outer flange, the inner flange, middle portion and outer flange are all annular and are connected end to end to form a cylindrical rim, in which weight reduction sockets are provided on the outer surface of the middle portion of the rim; the weight reduction sockets are rectangular ones, and are arranged in lattices in turn; and 3-5 rows of weight reduction sockets are arranged annularly on the outer surface of the middle portion of the rim.Type: GrantFiled: November 28, 2018Date of Patent: May 24, 2022Assignee: CITIC DICASTAL CO., LTD.Inventors: Zuo Xu, Xu Wang, Hanqi Wu, Zhen Li, Kaiqing Wang, Yule Zhou, Chuan Cheng, Changhai Li, Tiefeng Hu, Hui Chi
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Patent number: 11312175Abstract: An automobile wheel having a multilayer rim includes a wheel disc and a rim that is composed of at least two layers of metal rings by nesting, and a gap is preset between two adjacent metal rings; an outer side of one end of the wheel disc includes axial rim mounting grooves, and one end of the rim is inserted into the rim mounting grooves to fix the rim to the wheel disc.Type: GrantFiled: August 26, 2019Date of Patent: April 26, 2022Assignee: CITIC Dicastal CO., LTD.Inventors: Chuan Cheng, Changhai Li, Xu Wang, Hongbiao Li, Zhen Li, Yule Zhou, Zenglei He
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Patent number: 11167587Abstract: A wheel and a rim with a weight reduction inner flange are provided. The rim includes an inner flange, a middle portion and an outer flange which are all annular and connected end to end to form an annular rim, in which the inner flange or the outer flange includes multiple groups of edge weight reduction sockets arranged side by side on one side of the inner cavity of a hub, and multiple groups of inner weight reduction sockets arranged side by side are provided inside the edge weight reduction sockets on the rim; a group of edge weight reduction sockets includes a first edge weight reduction socket and a second edge weight reduction socket at the edge of the inner flange or the outer flange, and the first edge weight reduction socket is in the shape of a right-angled triangle having round angles.Type: GrantFiled: November 29, 2018Date of Patent: November 9, 2021Assignee: CITIC Dicastal CO., LTD.Inventors: Zuo Xu, Zhen Li, Xu Wang, Kaiqing Wang, Yule Zhou, Chuan Cheng, Changhai Li, Tiefeng Hu, Hui Chi
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Patent number: 11118254Abstract: A thermal treatment method for an A356 aluminum alloy cast-spun wheel is provided. The thermal treatment method is characterized by including the steps of: 1) heating an aluminum alloy wheel cast-spun piece to 540-550° C.; 2) preserving the heat of the aluminum alloy wheel cast-spun piece for 275-285 minutes at the temperature of 540-550° C.; 3) quenching the aluminum alloy wheel cast-spun piece in water of 70-90° C. for 180 seconds; 4) heating the aluminum alloy wheel cast-spun piece to 150-160° C.; 5) preserving the heat of the aluminum alloy wheel cast-spun piece for 175-185 minutes at 150-160° C.; and 6) cooling the aluminum alloy wheel cast-spun piece in air to room temperature.Type: GrantFiled: September 11, 2018Date of Patent: September 14, 2021Assignee: CITIC DICASTAL CO., LTDInventors: Zuo Xu, Guoyuan Xiong, Honglei Liu, Hongfeng Liu, Rui Wang, Changhai Li
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Patent number: 11052703Abstract: A rim with an inner flange having strip weight reduction sockets and a wheel are provided. The rim includes the inner flange, a middle portion and an outer flange which are all annular and are connected end to end to form an annular rim, in which trapezoidal weight reduction sockets are provided on the inner wall of the inner flange; the bottom edges of the weight reduction sockets are flush with the edge of the inner flange; the top edge of each weight reduction socket has fillets; and the weight reduction sockets have a bottom edge length of 5-30 mm, a height of 15-60 mm, a top edge length of 5-15 mm, a base angle of 72-83°, and a depth of 1-5 mm.Type: GrantFiled: November 29, 2018Date of Patent: July 6, 2021Assignee: CITIC DICASTAL CO., LTDInventors: Zuo Xu, Guoyuan Xiong, Xu Wang, Zhen Li, Kaiqing Wang, Yule Zhou, Chuan Cheng, Changhai Li, Tiefeng Hu, Hui Chi
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Patent number: 10919083Abstract: A process for manufacturing an aluminum alloy wheel includes: casting, de-flashing, soaking, spinning, thermal treatment, de-gating, X-ray and machining. During the casting, a casting mold is cooled with water, and a cast blank is produced from carrying out the casting. The de-flashing includes removing flashes of the cast blank at a rim of the cast blank with a de-flashing device. The soaking includes reheating on the cast blank that has been de-flashed. The spinning includes an adaptive spinning mold. The thermal treatment includes direct solution treatment and aging on the cast blank in a thermal treatment furnace after spinning.Type: GrantFiled: July 3, 2018Date of Patent: February 16, 2021Assignee: CITIC Dicastal CO., LTD.Inventors: Zuo Xu, Haiping Chang, Lijuan Zhang, Shiwen Xu, Changhai Li, Zhihua Zhu
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Patent number: 10807160Abstract: The present application discloses an aluminum alloy low-pressure casting device and an aluminum alloy low-pressure casting process. A riser tube is canceled, and the pressure kettle replaces original injection of compressed air into a holding furnace, thereby reducing the consumption of compressed air, and improving the production efficiency of the low-pressure casting process. A non-return stopper is used to space the low-pressure casting and the holding furnace, and molten aluminum alloy can be added into the holding furnace in real time without interrupting the low-pressure casting process, so that rejects affected by temperature field changes due to interrupt of the continuous casting process can be reduced, and the yield of the casting process is improved.Type: GrantFiled: July 31, 2018Date of Patent: October 20, 2020Assignee: CITIC DICASTAL CO., LTDInventors: Dexi Du, Changhai Li
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Publication number: 20200290396Abstract: An automobile hub with a hollow rim includes a wheel disc and the rim with at least one hollow cavity, in which the rim includes at least two mutually nested rings and an axial end cap at the same ends of the at least two rings, and the hollow cavity consists of the rings and the axial end cap. The outer side of one end of the wheel disc includes axial rim mounting grooves, and the rim is inserted into the rim mounting grooves and fixed to the wheel disc through the end without the axial end cap. By employing the automobile hub with the hollow rim, the hub assembling method, and the automobile having the hub, the weight of the hub can be further reduced, and the hub has sufficient strength.Type: ApplicationFiled: August 23, 2019Publication date: September 17, 2020Applicant: CITIC Dicastal CO., LTD.Inventors: Chuan CHENG, Changhai LI, Xu WANG, Hongbiao LI, Lin ZHU, Zhen LI, Yule ZHOU
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Patent number: 10758973Abstract: Disclosed is an aluminum alloy wheel squeeze casting process and an aluminum alloy wheel squeeze casting device. Molten aluminum is injected into a mold cavity from the bottom by adopting a U-shaped pipe, so that the filling is stable and the quality problem of the pore defect of a squeeze cast rim is solved; the squeeze deformation effect of the rim is strengthened using a mold locking ring; and through a secondary pressurization process for the center of the aluminum wheel, the internal dendritic spacing of the aluminum wheel casting is reduced, the yield strength and the elongation in the material mechanical properties of the casting are improved, and a necessary technical foundation is provided for overall weight reduction of the aluminum wheel.Type: GrantFiled: August 8, 2018Date of Patent: September 1, 2020Assignee: CITIC DICASTAL CO., LTDInventors: Dexi Du, Changhai Li, Yongwang Zhao
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Publication number: 20200254812Abstract: An automobile hub of a multilayer rim includes a wheel disc and a rim that is composed of at least two layers of metal rings by nesting, and a gap is preset between two adjacent metal rings; an outer side of one end of the wheel disc includes axial rim mounting grooves, and one end of the rim is inserted into the rim mounting grooves to fix the rim to the wheel disc.Type: ApplicationFiled: August 26, 2019Publication date: August 13, 2020Applicant: CITIC Dicastal CO., LTD.Inventors: Chuan CHENG, Changhai LI, Xu WANG, Hongbiao LI, Zhen LI, Yule ZHOU, Zenglei HE
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Patent number: 10675675Abstract: A water-cooled mold for low-pressure casting of an aluminum alloy wheel includes an upper mold, a lower mold and a side mold which surround a cavity of aluminum alloy, in which a cooling insert is embedded into a side mold frame of the side mold; an upper parting surface, a lower parting surface and a side parting surface of the cooling insert are respectively in contact parting with the side mold frame, the side parting surface includes a front zone and a rear straight zone, and a gap of 1.5-2.5 mm is formed between the rear straight zone and the side mold frame.Type: GrantFiled: November 29, 2018Date of Patent: June 9, 2020Assignee: CITIC Dicastal CO., LTD.Inventors: Lin Zhu, Changhai Li, Hongbiao Li, Baojun Shi
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Patent number: 10654099Abstract: A mold for reducing defects in low pressure casting of an aluminum alloy wheel includes a top mold, a side mold and a bottom mold, wherein the top mold is arranged above the bottom mold to mold a back cavity of a wheel, the bottom mold is arranged below the top mold to mold a front wheel disc of the wheel, the side mold is arranged on the side of the top mold and the bottom mold, and the top mold, the side mold and the bottom mold collectively surround a casting cavity of the aluminum alloy wheel, wherein the upper surface of the bottom mold includes a recessed portion configured to form a spoke and a boss portion configured to form a window and wherein the boss portion configured to form the window includes cooling ducts.Type: GrantFiled: March 22, 2019Date of Patent: May 19, 2020Assignee: CITIC Dicastal Co., Ltd.Inventors: Kaiqing Wang, Xianyi Xu, Changhai Li
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Publication number: 20200147742Abstract: A wheel deburring machine is capable of meeting the demand for mixed-line high-precision clamping in a wheel burr brushing process when being used and is ideal in effect, high in efficiency, safe and reliable in working and high in automation degree so as to be particularly suitable for mass production on a production line.Type: ApplicationFiled: July 4, 2019Publication date: May 14, 2020Applicant: CITIC Dicastal CO., LTD.Inventors: Yao ZHENG, Jiandong GUO, Lei YANG, Xuesong WANG, Xiaoguang HUANG, Weidong LIU, Zhihua ZHU, Changhai LI
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Patent number: 10576534Abstract: A mold for improving solidification speed of an aluminum alloy cast hot section includes a top mold, a side mold and a lower mold, the top mold being arranged at top and configured to complete a back cavity of a wheel, the bottom mold being arranged below the top mold and configured to complete shaping of a front wheel disc of the wheel, the side mold being arranged on side of the top mold and bottom mold, the top mold, side mold and bottom mold jointly surrounding a cast cavity of the aluminum alloy wheel, the center of the top mold includes a step hole through which a shunt cone is mounted, the shunt cone is connected with the top mold by bolts; the upper part of the shunt cone is assembled with the center hole of the top mold of the mold, the two are in zero clearance fit.Type: GrantFiled: December 14, 2018Date of Patent: March 3, 2020Assignee: CITIC Dicastal CO., LTD.Inventors: Kaiqing Wang, Xianyi Xu, Changhai Li
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Patent number: 10549339Abstract: Disclosed in the present application is a low-pressure casting mold for an aluminum wheel. V-shaped grooves are formed in the cavity surface of a side mold, a cavity is formed in the back cavity of the side mold, a cooling duct is arranged in the cavity of the side mold, and a main air pipe is perpendicular to an annular branch; the annular branch is concentric with a wheel casting, and air pipes are 5-10 mm away from the bottom surface of the cavity; the two ends of the annular branch are welded with plugs; air outlet holes are arranged on the annular branch, and the holes are perpendicular to the bottom surface of the cavity; the diameters of the air outlet holes are 3 mm, and the holes are uniformly distributed at intervals of 10-15 mm in the circumferential direction.Type: GrantFiled: July 31, 2018Date of Patent: February 4, 2020Assignee: CITIC DICASTAL CO., LTDInventors: Kaiqing Wang, Song Sheng, Yingfeng Wang, Xianyi Xu, Changhai Li