# US 2018/0023751 A1 · Two-axis mounting base > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023751 A1 - Document ID: US20180023751A1 - Status: Published application - Kind: A1 - Application number: 15/224,482 - Filed: 2016-07-29 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Xidian University - Applicants: Xidian University - Inventors: Xuechao Duan; Hong Bao; Baoyan Duan; Shufei Feng; Bi Cheng - Web page: https://patentgrep.com/patent/US20180023751A1 ## CPC - F16M 11/18: with mechanism for moving the apparatus relatively to the stand - F16M 11/10: around a horizontal axis {(F16M11/12 takes precedence)} - F16M 11/2014: {around a vertical axis (F16M11/2035 takes precedence)} - F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS ## Abstract A mounting base for supporting and rotating an instrument about two perpendicular axes is disclosed. The mounting base includes a vertical column; a rotatable platform attached to the column by a revolute joint; a rail around the column at least one rod, an end of the at least one rod connections with the revolute joint; at least one sliding mechanism, connecting with the other end of the at least one rod, the sliding mechanism sliding on the rail. The mounting base is light and easily controlled with arbitrary azimuth. ## Claims ### Claim 1 A mounting base for supporting and rotating an instrument about two perpendicular axes, comprising: a vertical column; a rotatable platform attached to the column by a first revolute joint; a rail around the column; at least one rod, an end of the at least one rod connecting with the first revolute joint; at least one sliding mechanism, connecting with the other end of the at least one rod, the sliding mechanism sliding on the rail. ### Claim 2 (depends on 1) The mounting base of claim 1, wherein the column is located at the center of the rail. ### Claim 3 (depends on 1) The mounting base of claim 1, wherein the mounting base includes two rods and two sliding mechanisms, upper ends of the two rods rod are both connected with the first revolute joint; lower ends of the two rods are connected with the two sliding, mechanisms respectively; and the two sliding mechanisms slides on the rail. ### Claim 4 (depends on 1) The mounting base of claim 1, wherein the at least one rod is connected with the first revolute joint by a universal joint. ### Claim 5 (depends on 1) The mounting base of claim 1, wherein the at least one sliding mechanism is connected with a lower end of the at least one rod by a three-rotational-degrees-of-freedom joint. ### Claim 6 (depends on 5) The mounting base of claim 5, wherein the at least one sliding mechanism includes a gear pair, a servo motor and a reducer attached to the servo motor, and one gear of the gear pair engages with the rail. ### Claim 7 (depends on 6) The mounting base of claim 6, wherein a rack is provided on the inner lateral face of the rail; and the one gear of the gear pair engages with the rack. ### Claim 8 (depends on 7) The mounting base of claim 7, wherein the gear pair is located between the column and the rack; and the gear pair is driven by the servo motor and the reducer. ### Claim 9 (depends on 1) The mounting base of claim 1, wherein the column is connected with ground or an external base by a second revolute joint. ### Claim 10 (depends on 1) The mounting base of claim 1, wherein an axis of the column is perpendicular to an axis of the first revolute joint. ### Claim 11 (depends on 1) The mounting base of claim 1, wherein a shape of the rail is circular or elliptical. ### Claim 12 A mounting base for supporting and rotating an instrument about two perpendicular axes, comprising: a vertical column; a rotatable platform attached to the column by a first revolute joint; a rail around the column; at least one extendable linear actuator, an end of the at least one actuator connecting with the first revolute joint; at least one sliding, mechanism, connecting with the other end of the at least one extendable linear actuator, the sliding mechanism sliding on the rail. ### Claim 13 (depends on 12) The mounting base of claim 12, wherein the mounting base includes two extendable linear actuators and two sliding mechanisms, upper ends of the actuators are both connected with the first revolute joint; lower ends of the actuators are connected with the two sliding mechanisms respectively; and the two sliding mechanisms slides on the rail. ### Claim 14 (depends on 13) The mounting base of claim 13, wherein the actuators are connected with the first revolute joint by universal joints. ### Claim 15 (depends on 13) The mounting, base of claim 13, wherein the sliding mechanisms are connected with the actuators by three-rotational-degrees-of-freedom joints. ### Claim 16 (depends on 15) The mounting base of claim 15, wherein each sliding mechanism includes a gear pair, a servo motor and a reducer attached to the servo motor, and one gear of the gear pair engages with the rail. ### Claim 17 (depends on 16) The mounting base of claim 16, wherein a rack is provided on the inner lateral face of the rail; and the one gear of the gear pair engages with the rack. ### Claim 18 (depends on 17) The mounting base of claim 17, wherein the gear pair is located between the column and the rack, and the gear pair is driven by the servo motor and the reducer. ### Claim 19 (depends on 13) The mounting base of claim 13, wherein a shape of the rail is circular or elliptical. ### Claim 20 A mounting base for supporting and rotating an instrument about two perpendicular axes, comprising: a vertical column; a rotatable platform attached to the column by a first revolute joint; a circular rail around the column; two rods, upper ends of the two rods both connecting with the first revolute joint; two sliding mechanisms, connecting with lower ends of the two rods respectively, the sliding mechanism sliding on the rail; wherein the column is located at the center of the rail; the two rods are connected with the first revolute joint by universal joints; the two sliding mechanisms are connected with the lower ends of the two rods by three-rotational-degrees-of-freedom joints; each sliding mechanism includes a gear pair, a servo motor and a reducer attached to the servo motor; a rack is provided on the inner lateral face of the rail; and one gear of the gear pair engages with the rack; the gear pair is driven by the servo motor and the reducer; and an axis of the column is perpendicular to an axis of the first revolute joint.