WO2021023167A1 - 一种四节升降立柱 - Google Patents
一种四节升降立柱 Download PDFInfo
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- WO2021023167A1 WO2021023167A1 PCT/CN2020/106673 CN2020106673W WO2021023167A1 WO 2021023167 A1 WO2021023167 A1 WO 2021023167A1 CN 2020106673 W CN2020106673 W CN 2020106673W WO 2021023167 A1 WO2021023167 A1 WO 2021023167A1
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- lifting
- transmission
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- lower transmission
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- 101100293261 Mus musculus Naa15 gene Proteins 0.000 claims description 4
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
Definitions
- the invention belongs to the field of lifting columns, and specifically relates to a four-section lifting column.
- the driving assembly in the existing lifting column drives a single screw assembly to realize the lifting of the lifting column, so that the lifting speed of the lifting column is too slow, the lifting to the specified height takes too long, the lifting efficiency is low, and the lifting Each section of the lifting tube of the lifting column is set long enough to realize the lifting to the set height, so that the length of the lifting column in the contracted state is too long, which is not convenient for storage and transportation.
- the technical problem to be solved by the present invention is to provide a fast-lifting four-section lifting column.
- a four-section lifting column including a lifting assembly and four sleeved lifting tubes
- the four lifting tubes are the first lifting tube and the second lifting tube from the inside to the outside.
- the lifting assembly includes three screw assemblies and a driving assembly that drives the three screw assemblies to operate at the same time.
- the lifting assembly is fixed in the second lifting tube.
- the three screw assemblies Are respectively connected to the first lifting pipe, the third lifting pipe and the fourth lifting pipe; or the lifting assembly is fixed in the third lifting pipe, and the three screw assemblies are respectively connected to the first lifting pipe, the second lifting pipe and the fourth lifting pipe.
- the lifting assembly is fixed in the third lifting pipe, and the three screw assemblies are respectively an upper transmission inner screw assembly connected with the second lifting pipe, an upper transmission outer screw assembly connected with the first lifting pipe, and a second lifting pipe.
- the lower transmission screw assembly connected by the four lifting tubes, the upper transmission inner screw assembly and the upper transmission outer screw assembly rotate together through splines.
- the upper transmission inner screw assembly includes an upper transmission inner screw connected to the drive assembly and an upper transmission inner nut threadedly connected to the upper transmission inner screw, the upper transmission inner nut is connected to the second lifting pipe, and the upper transmission outer screw
- the rod assembly includes an upper transmission outer screw rod and an upper transmission outer nut threadedly connected with the upper transmission outer screw rod.
- the upper transmission outer screw rod is sleeved on the upper transmission inner screw rod and rotates with the upper transmission inner screw rod.
- the upper transmission outer nut Connected with the first lifting pipe.
- the lower transmission screw assembly includes a lower transmission tube, a lower transmission outer screw rod that rotates together with the lower transmission tube through a spline to push the fourth lifting tube down, and a lower transmission outer nut threadedly connected to the lower transmission outer screw, The lower transmission outer nut is fixed on the third lifting pipe.
- the lower transmission screw assembly includes a lower transmission inner screw connected to the fourth lifting tube and a lower transmission inner nut threadedly connected to the lower transmission inner screw, the driving assembly is connected with the lower transmission inner nut and drives the lower transmission inner nut Rotate.
- the lifting assembly is fixed in the second lifting pipe, and the three screw assemblies are respectively an upper transmission screw assembly connected to the first lifting pipe, a lower transmission outer screw assembly connected to the third lifting pipe, and a fourth The lower transmission inner screw assembly connected to the lifting pipe.
- the upper transmission screw assembly includes an upper transmission inner screw and an upper transmission inner nut threadedly connected to the upper transmission inner screw.
- the upper transmission inner nut is connected to the first lifting pipe and the lower transmission
- the outer screw assembly and the lower transmission inner screw assembly rotate together through a spline.
- the lower transmission outer screw assembly includes a lower transmission tube, a lower transmission outer screw that rotates together with the lower transmission tube to push the third lifting tube down, and a lower transmission outer nut threadedly connected to the lower transmission outer screw.
- the outer nut is fixed on the second lifting pipe.
- the lower transmission inner screw assembly includes a lower transmission inner screw connected to the fourth lifting tube and a lower transmission inner nut threadedly connected to the lower transmission inner screw, and the lower transmission outer screw is sleeved on the lower transmission inner screw On the outside, the lower transmission inner nut is fixed at the bottom of the lower transmission outer screw rod and is linked with the lower transmission outer screw rod.
- the drive assembly includes a motor and a reduction box that drives the three screw assemblies.
- the reduction box includes a worm gear connected to the motor and a first transmission device and a second transmission device connected to the screw assembly. The second transmission device and The worm gear is driven by the first transmission device.
- the worm gear includes a worm connected to the motor and a worm wheel connected to the worm.
- the first transmission device includes a first bevel gear connected with the worm gear, a second bevel gear meshed with the first bevel gear, and a second bevel gear.
- the first transmission gear is linked by gears, and the second transmission device includes a second transmission gear meshed with the first transmission gear.
- the three screw assemblies drive different lifting pipes up or down away from the lifting pipes of the fixed drive assembly, so as to realize the four lifting columns.
- the tube rises visually at the same time, so that the lifting speed of the lifting column is multiple times that of the lifting column of a single screw assembly.
- the output speed of the screw assembly is low, the overall lifting speed of the lifting column is increased, and four sections
- the different lifting pipes of the lifting column move up or down when the lifting column is started.
- the lifting column is in the contracted state, the four lifting pipes overlap or partially overlap.
- Each lifting pipe does not need to be too long to realize the lifting column lift to the setting Height, that is, to achieve the purpose of low installation distance and high stroke, which is convenient for storage and transportation of the lifting column.
- Figure 1 is a perspective view of the first embodiment
- Figure 2 is a cross-sectional view of the first embodiment
- Figure 3 is a cross-sectional view of the second embodiment
- Figure 4 is a cross-sectional view 1 of the second embodiment
- Figure 5 is a second cross-sectional view of the second embodiment
- Figure 6 is a cross-sectional view 1 of the third embodiment
- Figure 7 is a second cross-sectional view of the third embodiment
- Figure 8 is the first schematic diagram of the reduction gearbox in the first embodiment
- Figure 9 is a second schematic diagram of the reduction gearbox in the first embodiment.
- a four-section lifting column includes a lifting assembly and four lifting pipes connected to each other.
- the four lifting pipes are the first lifting pipe, the second lifting pipe, the third lifting pipe and the fourth lifting pipe from the inside to the outside.
- the lifting assembly includes three screw assemblies and a driving assembly that drives the three screw assemblies to operate at the same time.
- the lifting assembly is fixed in the second lifting tube, and the three screw assemblies are connected to the first lifting tube, the third lifting tube and the In the fourth lifting tube; or, the lifting assembly is fixed in the third lifting tube, and the three screw assemblies are respectively connected to the first lifting tube, the second lifting tube and the fourth lifting tube.
- four lifting columns are provided.
- the three screw assemblies respectively drive different lifting pipes upward or downward away from the lifting pipes of the fixed drive assembly to realize the four lifting columns.
- the two lifting pipes rise visually at the same time, so that the lifting speed of the lifting column is multiple times that of the lifting column of a single screw assembly.
- the output speed of the screw assembly is low, the overall lifting speed of the lifting column is increased, and The different lifting pipes of the four-section lifting column move up or down when the lifting column is started.
- the lifting column is in the contracted state, the four-section lifting pipes overlap or partially overlap.
- Each lifting pipe does not need to be set too long to realize the lifting column up and down. Set the height to achieve the purpose of low installation distance and high stroke, which is convenient for storage and transportation of the lifting column.
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, “plurality” means two or more than two unless specifically defined otherwise.
- the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- installed can be a fixed connection or a detachable connection.
- it can be a mechanical connection or an electrical connection
- it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
- the "above” or “below” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
- “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
- the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.
- a four-section lifting column as shown in Figures 1 to 3, includes a lifting assembly and four sleeved lifting pipes.
- the lifting assembly pushes the four lifting pipes to expand and contract.
- the lifting assembly includes three screw assemblies and a driving assembly that simultaneously drives the three screw assemblies to operate.
- the lifting assembly in this embodiment is fixed in the third lifting pipe 130 and connected to the bottom wall of the third lifting pipe 130, and the three screw assemblies are respectively the upper transmission inner screw assembly connected to the second lifting pipe 120, The upper transmission outer screw assembly connected with the first lifting pipe 110 and the lower transmission screw assembly connected with the fourth lifting pipe 140, the upper transmission inner screw assembly and the upper transmission outer screw assembly rotate together through the first spline 810 .
- the drive assembly includes a motor 200 that is energized to rotate and a reduction box 300 that drives three screw assemblies.
- the reduction box 300 includes a worm gear connected to the output shaft of the motor 200, and a worm gear.
- the worm device includes a worm 312 connected to the motor 200 and a worm wheel 311 connected to the worm 312, which decelerates the rotation of the motor 200 and controls the rotation speed of the screw assembly within a proper range.
- the reduction box 300 also includes a first transmission The device and the second transmission device, the second transmission device and the worm gear are driven by the first transmission device, so that the worm gear device can drive the first transmission device and the second transmission device to rotate at the same time without being connected to both at the same time , Reduce the volume of the worm gear.
- the first transmission device includes a first bevel gear 321 keyed to the worm gear 311, a second bevel gear 322 meshing with the first bevel gear 321, and a first transmission linked with the second bevel gear 322.
- Gear 323 the second transmission device includes a second transmission gear 331 meshed with the first transmission gear 323.
- the upper transmission inner screw assembly includes an upper transmission inner screw 410 whose bottom is inserted on the second bevel gear 322 and rotates with the second bevel gear 322, and an upper transmission threadedly connected with the upper transmission inner screw 410
- the inner nut 420 and the upper transmission inner nut 420 are connected to the second lifting pipe 120.
- the upload moving outer screw assembly includes an upper transmission outer screw 510 and an upper transmission outer nut 520 threadedly connected to the upper transmission outer screw 510.
- the upper transmission outer screw 510 is sleeved on the upper transmission inner screw 410, and the upper transmission outer The screw 510 rotates together with the upper transmission inner screw 410 through the first spline 810 at the top, and the upper transmission outer nut 520 is connected to the first lifting pipe 110.
- the first lifting pipe 110 includes a first pipe body and a device.
- the upper transmission outer nut 520 is connected to the top plate through the upper transmission tube 530, and the upper transmission outer nut 520 is fixed inside the upper transmission tube 530.
- the lower transmission screw assembly includes a lower transmission tube 730 connected with the second transmission gear 331, a lower transmission outer screw 710, and a lower transmission outer nut 720 threadedly connected with the lower transmission outer screw 710.
- the nut 720 is fixed on the reduction box 300, that is, on the third lifting tube 130.
- the lower transmission tube 730 is sleeved on the outer side of the lower transmission outer screw rod 710, and is connected to the lower transmission through the second spline 820 on the top of the lower transmission outer screw rod 710
- the pipe 730 rotates together to push the fourth lifting pipe 140 to descend relative to the third lifting pipe 130.
- the rotation of the output shaft of the motor 200 drives the worm 312 to rotate, and the worm 312 drives the worm gear 311 to reduce the speed.
- the worm gear 311 drives the first bevel gear 321 to rotate, the first bevel gear 321 drives the second bevel gear 322 to rotate, and the second bevel gear 322 Drive the upper transmission inner screw 410 to rotate, the upper transmission inner screw 410 rotates to drive the upper transmission inner nut 420 to move axially along the upper transmission inner screw 410, and the upper transmission inner nut 420 drives the second lifting tube 120 to the third
- the lifting tube 130 moves above and pushes the upper transmission outer screw 510 upwards.
- the upper transmission outer screw 510 rotates together with the upper transmission inner screw 410 to drive the upper transmission outer nut 520 along
- the upper driving outer screw rod 510 moves in the axial direction, and the upper transmission outer nut 520 pushes the first lifting tube 110 upward through the upper transmission tube 530 so that the first lifting tube 110 moves upward relative to the second lifting tube 120.
- the second bevel gear 322 drives the upper transmission inner screw 410 to rotate
- the second bevel gear 322 also drives the first transmission gear 323 that rotates coaxially with the second bevel gear 322 to rotate
- the first transmission gear 323 drives the
- the second transmission gear 331 meshed with the transmission gear 323 rotates
- the second transmission gear 331 drives the lower transmission tube 730 to rotate
- the lower rotation tube drives the lower transmission outer screw 710 to rotate through the second spline 820, because the lower transmission outer nut 720 is fixed on
- the lower transmission outer screw rod 710 moves axially upward relative to the lower transmission outer nut 720
- the lower transmission outer screw 710 pushes the fourth lifting pipe to the lower part of the third lifting pipe 130 through the connecting structure
- the bottom plate of 140, the lower transmission outer screw rod 710 and the connecting structure are fixed in the axial direction, but can be relatively rotated (the connecting structure can be the structure shown in the figure, or it can be any structure that realizes this function such as a bearing), So that
- the three screw assemblies drive different lifting pipes up or down away from the lifting pipes of the fixed drive assembly, so as to realize the four lifting columns.
- the tube rises visually at the same time, so that the lifting speed of the lifting column is multiple times that of the lifting column of a single screw assembly.
- the output speed of the screw assembly is low, the overall lifting speed of the lifting column is increased, and four sections
- the different lifting pipes of the lifting column move up or down when the lifting column is started.
- the lifting column is in the contracted state, the four lifting pipes overlap or partially overlap.
- Each lifting pipe does not need to be too long to realize the lifting column lift to the setting Height, that is, to achieve the purpose of low installation distance and high stroke, which is convenient for storage and transportation of the lifting column.
- the lower transmission screw assembly includes a lower transmission inner screw 610 connected to the fourth lifting tube 140 and a lower transmission inner screw 610.
- the lower transmission inner nut 620 is threadedly connected.
- the lower transmission inner nut 620 is arranged in the third lifting tube 130.
- the first transmission gear 323 is connected to the lower transmission inner nut 620 through the second transmission gear 331 and drives the lower transmission inner nut 620 to rotate.
- the second transmission gear 331 is sleeved on the outer side of the lower transmission inner nut 620 and is linked with the lower transmission inner nut 620. It can be understood that the second transmission gear 331 can be provided separately from the lower transmission inner nut 620 or can be separated from the lower transmission inner nut 620.
- the nut 620 is integrally arranged, and the structure is simple and easy to produce.
- the lower transmission inner nut 620 rotates with the first transmission gear 323, the lower transmission inner nut 620 does not move in the vertical direction in the third lifting pipe 130, and the lower transmission inner screw 610 is connected to the bottom plate of the fourth lifting pipe 140 , So that the lower transmission inner screw 610 pushes the fourth lifting tube 140 to move below the third lifting tube 130 in the axial direction.
- the upper transmission screw assembly includes an upper transmission inner screw 410 inserted on the second bevel gear 322 and an upper transmission inner nut 420 threadedly connected to the upper transmission inner screw 410, the upper transmission inner nut 420 passes
- the upload moving pipe 530 is connected to the top plate of the first lifting pipe 110, and the upper transmission inner screw 410 rotates together with the second bevel gear 322, so that the upper transmission inner nut 420 moves upward in the axial direction, and moves upwards and downwards through the upper transmission pipe 530
- the first lifting tube 110 is pushed above the tube 120 so that the first lifting tube 110 moves upward relative to the second lifting tube 120.
- the lower transmission outer screw assembly includes a lower transmission tube 730 connected to the second transmission gear 331, a lower transmission outer screw 710 that rotates together with the lower transmission tube 730 to push the third lifting tube 130 down, and
- the lower transmission outer nut 720 is threadedly connected with the transmission outer screw rod 710, and the lower transmission outer nut 720 is fixed on the second lifting pipe 120.
- the lower transmission inner screw assembly includes a lower transmission inner screw 610 connected to the fourth lifting pipe 140 and a lower transmission inner nut 620 threadedly connected with the lower transmission inner screw 610, and the lower transmission outer screw 710 is sleeved in the lower transmission.
- the lower transmission inner nut 620 is fixed at the bottom of the lower transmission outer screw rod 710 and is linked with the lower transmission outer screw rod 710.
- the lower transmission tube 730 and the top of the lower transmission outer screw rod 710 are driven by the second spline 820 .
- the lower transmission inner screw 610 can be connected to the bottom wall of the fourth lifting tube 140 through a connecting structure, the lower transmission inner screw 610 and the connecting structure are fixed in the axial direction, but can be relatively rotated (the connection structure can be as shown in the figure
- the structure shown in the figure can also be any structure that realizes this function, such as a bearing, so that the lower transmission inner screw 610 does not drive the fourth lifting tube 140 to rotate.
- the upper transmission inner screw 410 rotates together with the second bevel gear 322, so that the upper transmission inner nut 420 moves upward in the axial direction, and pushes the first lifting tube above the second lifting tube 120 through the upper transmission tube 530 110, so that the first lifting tube 110 moves upward relative to the second lifting tube 120.
- the second bevel gear 322 drives the second transmission gear 331 to rotate
- the rotation of the second transmission gear 331 drives the lower transmission tube 730 to rotate
- the lower transmission tube 730 drives the lower transmission outer screw 710 to rotate through the second spline 820, because the lower transmission
- the outer nut 720 is fixed on the second lifting tube 120 and does not move up and down, so the lower driving outer screw 710 pushes the bottom wall of the third lifting tube 130 in the axial direction, so that the third lifting tube 130 moves below the second lifting tube 120 ;
- the lower transmission outer screw rod 710 rotates
- the lower transmission inner nut 620 fixed at the bottom of the lower transmission outer screw rod 710 rotates and descends together with the lower transmission outer screw rod 710, so that the lower transmission inner screw rod 610 axially pushes the fourth
- the lifting tube 140 makes the fourth lifting tube 140 move below the third lifting tube 130.
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Abstract
一种四节升降立柱，包括升降总成和相套接的四个升降管，四个升降管由内向外依次为第一升降管（110）、第二升降管（120）、第三升降管（130）和第四升降管（140），升降总成包括三个丝杆组件和同时驱动三个丝杆组件运行的驱动组件，升降总成固定在第二升降管（120）内，三个丝杆组件分别连接在第一升降管（110）、第三升降管（130）和第四升降管（140）内；或者，升降总成固定在第三升降管内，三个丝杆组件分别连接在第一升降管（110）、第二升降管（120）和第四升降管（140）内。通过驱动组件同时驱动三个丝杆组件，三个丝杆组件分别带动不同的升降管向上或向下远离固定驱动组件的升降管，实现升降立柱的四个升降管在视觉上的同时上升，提高升降立柱的整体升降速度。
Description
本发明属于升降立柱领域，具体涉及一种四节升降立柱。
目前，现有的升降立柱中的驱动组件通过驱动单根丝杆组件实现升降立柱的升降，使得升降立柱的升降速度过慢，升降到指定的高度耗时过长，升降效率低，且需要把升降立柱的每一节的升降管设置的足够长才能实现升降到设定高度，使得处于收缩状态的升降立柱长度过长，不便于存放和运输。
发明内容
本发明所要解决的技术问题就是提供一种快速升降的四节升降立柱。
为解决上述技术问题，本发明采用如下技术方案：一种四节升降立柱，包括升降总成和相套接的四个升降管，四个升降管由内向外依次为第一升降管、第二升降管、第三升降管和第四升降管，升降总成包括三个丝杆组件和同时驱动三个丝杆组件运行的驱动组件，升降总成固定在第二升降管内，三个丝杆组件分别连接在第一升降管、第三升降管和第四升降管内；或者，升降总成固定在第三升降管内，三个丝杆组件分别连接在第一升降管、第二升降管和第四升降管内。
进一步的，升降总成固定在第三升降管内，三个丝杆组件分别为与第二升降管相连的上传动内丝杆组件、与第一升降管相连的上传动外丝杆组件以及与第四升降管相连的下传动丝杆组件，上传动内丝杆组件和上传动外丝杆组件通过花键共同转动。
进一步的，上传动内丝杆组件包括与驱动组件相连的上传动内丝杆以及与上传动内丝杆螺纹连接的上传动内螺母，上传动内螺母与第二升降管相连，上 传动外丝杆组件包括上传动外丝杆以及与上传动外丝杆螺纹连接的上传动外螺母，上传动外丝杆套接在上传动内丝杆上与上传动内丝杆共同转动，上传动外螺母与第一升降管相连。
进一步的，下传动丝杆组件包括下传动管、通过花键与下传动管共同转动以推动第四升降管下降的下传动外丝杆以及与下传动外丝杆螺纹连接的下传动外螺母，下传动外螺母固定在第三升降管上。
进一步的，下传动丝杆组件包括与第四升降管相连的下传动内丝杆以及与下传动内丝杆螺纹连接的下传动内螺母，驱动组件与下传动内螺母相连并驱动下传动内螺母转动。
进一步的，升降总成固定在第二升降管内，三个丝杆组件分别为与第一升降管相连的上传动丝杆组件、与第三升降管相连的下传动外丝杆组件以及与第四升降管相连的下传动内丝杆组件，上传动丝杆组件包括上传动内丝杆以及与上传动内丝杆螺纹连接的上传动内螺母，上传动内螺母与第一升降管相连，下传动外丝杆组件和下传动内丝杆组件通过花键共同转动。
进一步的，下传动外丝杆组件包括下传动管、与下传动管共同转动以推动第三升降管下降的下传动外丝杆以及与下传动外丝杆螺纹连接的下传动外螺母，下传动外螺母固定在第二升降管上。
进一步的，下传动内丝杆组件包括连接在第四升降管上的下传动内丝杆以及与下传动内丝杆螺纹连接的下传动内螺母，下传动外丝杆套接在下传动内丝杆外侧，下传动内螺母固定在下传动外丝杆的底部并与下传动外丝杆连动。
进一步的，驱动组件包括电机和驱动三个丝杆组件的减速箱，减速箱包括与电机相连的蜗轮蜗杆装置以及与丝杆组件相连的第一传动装置和第二传动装置，第二传动装置和蜗轮蜗杆装置通过第一传动装置传动。
进一步的，蜗轮蜗杆装置包括连接在电机上的蜗杆和与蜗杆相连的蜗轮，第一传动装置包括与蜗轮相连的第一伞齿轮、与第一伞齿轮啮合的第二伞齿轮以及与第二伞齿轮连动的第一传动齿轮，第二传动装置包括与第一传动齿轮啮合的第二传动齿轮。
与现有技术相比，本发明的有益效果是：
通过设置四节升降立柱，当驱动组件同时驱动三个丝杆组件转动时，三个丝杆组件分别带动不同的升降管向上或向下远离固定驱动组件的升降管，实现升降立柱的四个升降管在视觉上的同时上升，使得升降立柱的升降速度为单根丝杆组件的升降立柱的多倍，在丝杆组件输出速度较低的情况下，提高升降立柱的整体升降速度，且四节升降立柱不同的升降管在升降立柱启动时向上或向下移动，在升降立柱处于收缩状态时四节升降管重合或部分重合，每个升降管无需设置过长即可实现升降立柱升降到设定高度，即实现低安装距高行程的目的，便于升降立柱的存放和运输。
本发明的特点和优点将会在下面的具体实施方式、附图中详细的揭露。
下面结合附图和具体实施方式对本发明作进一步描述：
图1为实施例一的立体图；
图2为实施例一的剖视图一；
图3为实施例一的剖视图二；
图4为实施例二的剖视图一；
图5为实施例二的剖视图二；
图6为实施例三的剖视图一；
图7为实施例三的剖视图二；
图8为实施例一中减速箱的示意图一；
图9为实施例一中减速箱的示意图二。
附图说明：
110、第一升降管；120、第二升降管；130、第三升降管；140、第四升降管；
200、电机；
300、减速箱；311、蜗轮；312、蜗杆；321、第一伞齿轮；322、第二伞齿轮；323、第一传动齿轮；331、第二传动齿轮；
410、上传动内丝杆；420、上传动内螺母；
510、上传动外丝杆；520、上传动外螺母；530、上传动管；
610、下传动内丝杆；620、下传动内螺母；
710、下传动外丝杆；720、下传动外螺母；730、下传动管。
810、第一花键；820、第二花键。
一种四节升降立柱，包括升降总成和相套接的四个升降管，四个升降管由内向外依次为第一升降管、第二升降管、第三升降管和第四升降管，升降总成包括三个丝杆组件和同时驱动三个丝杆组件运行的驱动组件，升降总成固定在第二升降管内，三个丝杆组件分别连接在第一升降管、第三升降管和第四升降管内；或者，升降总成固定在第三升降管内，三个丝杆组件分别连接在第一升降管、第二升降管和第四升降管内。本发明通过设置四节升降立柱，当驱动组件同时驱动三个丝杆组件转动时，三个丝杆组件分别带动不同的升降管向上或向下远离固定驱动组件的升降管，实现升降立柱的四个升降管在视觉上的同时上升，使得升降立柱的升降速度为单根丝杆组件的升降立柱的多倍，在丝杆组 件输出速度较低的情况下，提高升降立柱的整体升降速度，且四节升降立柱不同的升降管在升降立柱启动时向上或向下移动，在升降立柱处于收缩状态时四节升降管重合或部分重合，每个升降管无需设置过长即可实现升降立柱升降到设定高度，即实现低安装距高行程的目的，便于升降立柱的存放和运输。
下面结合本发明实施例的附图对本发明实施例的技术方案进行解释和说明，但下述实施例仅为本发明的优选实施例，并非全部。基于实施方式中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得其他实施例，都属于本发明的保护范围。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上，除非另有明确的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
实施例一：
一种四节升降立柱，如图1至图3所示，包括升降总成和相套接的四个升降管，升降总成推动四个升降管伸缩，四个升降管由内向外依次为第一升降管110、第二升降管120、第三升降管130和第四升降管140，升降总成包括三个丝杆组件和同时驱动三个丝杆组件运行的驱动组件。
本实施例中的升降总成固定在第三升降管130内并与第三升降管130的底壁相连，三个丝杆组件分别为与第二升降管120相连的上传动内丝杆组件、与第一升降管110相连的上传动外丝杆组件以及与第四升降管140相连的下传动丝杆组件，上传动内丝杆组件和上传动外丝杆组件通过第一花键810共同转动。
本实施例中，如图8和图9所示，驱动组件包括通电转动的电机200和驱动三个丝杆组件的减速箱300，减速箱300包括与电机200输出轴相连的蜗轮蜗杆装置，蜗轮蜗杆装置包括连接在电机200上的蜗杆312和与蜗杆312相连的蜗轮311，对电机200输出的转动进行减速，将丝杆组件的转速控制在合适的范围内，减速箱300还包括第一传动装置和第二传动装置，所述第二传动装置和蜗轮蜗杆装置通过第一传动装置传动，使得蜗轮蜗杆装置能够同时带动第一传动装置和第二传动装置进行转动，而无需同时与两者相连，缩小蜗轮蜗杆装置 的体积。本实施例优选的是，第一传动装置包括与蜗轮311键连接的第一伞齿轮321、与第一伞齿轮321啮合的第二伞齿轮322以及与第二伞齿轮322连动的第一传动齿轮323，第二传动装置包括与第一传动齿轮323啮合的第二传动齿轮331。
本实施例中，上传动内丝杆组件包括底部插接在第二伞齿轮322上并随第二伞齿轮322转动的上传动内丝杆410以及与上传动内丝杆410螺纹连接的上传动内螺母420，上传动内螺母420与第二升降管120相连。上传动外丝杆组件包括上传动外丝杆510以及与上传动外丝杆510螺纹连接的上传动外螺母520，上传动外丝杆510套接在上传动内丝杆410上，上传动外丝杆510通过顶部的第一花键810与上传动内丝杆410共同转动，上传动外螺母520与第一升降管110相连，优选的是，第一升降管110包括第一管体和设于第一管体上的顶板，所述上传动外螺母520通过上传动管530与顶板相连，上传动外螺母520固定在上传动管530内部。
本实施例中，下传动丝杆组件包括与第二传动齿轮331连接的下传动管730、下传动外丝杆710以及与下传动外丝杆710螺纹连接的下传动外螺母720，下传动外螺母720固定在减速箱300上也就是固定在第三升降管130上，下传动管730套接在下传动外丝杆710外侧，通过下传动外丝杆710顶部的第二花键820与下传动管730共同转动以推动第四升降管140相对于第三升降管130下降。
升降立柱的工作流程如下：
电机200的输出轴转动带动蜗杆312转动，蜗杆312带动蜗轮311转动，实现降低转速，蜗轮311带动第一伞齿轮321转动，第一伞齿轮321带动第二伞齿轮322转动，第二伞齿轮322带动上传动内丝杆410转动，上传动内丝杆410转动带动上传动内螺母420沿上传动内丝杆410发生轴向上的移动，上传动 内螺母420带动第二升降管120向第三升降管130的上方移动，并向上推动上传动外丝杆510，在上传动内丝杆410转动的同时上传动外丝杆510随上传动内丝杆410共同转动，带动上传动外螺母520沿上传动外丝杆510发生轴向上的移动，上传动外螺母520通过上传动管530向上推动第一升降管110，使得第一升降管110相对于第二升降管120向上移动。
在第二伞齿轮322带动上传动内丝杆410转动的同时，第二伞齿轮322也带动与第二伞齿轮322同轴转动的第一传动齿轮323转动，第一传动齿轮323带动与第一传动齿轮323啮合的第二传动齿轮331转动，第二传动齿轮331带动下传动管730转动，下转动管通过第二花键820带动下传动外丝杆710转动，因为下传动外螺母720固定在第三升降管130上，所以下传动外丝杆710相对于下传动外螺母720发生轴向上的移动，下传动外丝杆710通过连接结构向第三升降管130的下部推动第四升降管140的底板，下传动外丝杆710与连接结构之间在轴向上固定，但可进行相对转动(连接结构可以为图中所示结构，也可以为轴承等任意实现该功能的结构)，使得下传动外丝杆710不带动第四升降管140转动，第四升降管140设置在平台上时，在视觉上形成第一升降管110、第二升降管120和第三升降管130同时向上移动的效果。
通过设置四节升降立柱，当驱动组件同时驱动三个丝杆组件转动时，三个丝杆组件分别带动不同的升降管向上或向下远离固定驱动组件的升降管，实现升降立柱的四个升降管在视觉上的同时上升，使得升降立柱的升降速度为单根丝杆组件的升降立柱的多倍，在丝杆组件输出速度较低的情况下，提高升降立柱的整体升降速度，且四节升降立柱不同的升降管在升降立柱启动时向上或向下移动，在升降立柱处于收缩状态时四节升降管重合或部分重合，每个升降管无需设置过长即可实现升降立柱升降到设定高度，即实现低安装距高行程的目 的，便于升降立柱的存放和运输。
实施例二：
本实施例与实施例一的不同之处在于，如图4和图5所示，下传动丝杆组件包括与第四升降管140相连的下传动内丝杆610以及与下传动内丝杆610螺纹连接的下传动内螺母620，下传动内螺母620设于第三升降管130内，第一传动齿轮323通过第二传动齿轮331与下传动内螺母620相连并驱动下传动内螺母620转动，第二传动齿轮331套接在下传动内螺母620的外侧并与下传动内螺母620连动，可以理解的是，第二传动齿轮331可以与下传动内螺母620分体设置也可以与下传动内螺母620一体设置，结构简单易生产。
本实施例与实施例一中升降立柱的工作流程不同之处如下：
下传动内螺母620随第一传动齿轮323转动，下传动内螺母620在第三升降管130内并不发生竖直方向上的移动，下传动内丝杆610与第四升降管140的底板相连，使得下传动内丝杆610沿轴向推动第四升降管140向第三升降管130的下方移动。
实施例三：
本实施例和实施例一的不同之处在于，如图6和图7所示，升降总成固定在第二升降管120的底板上，三个丝杆组件分别为与第一升降管110相连的上传动丝杆组件、与第三升降管130相连的下传动外丝杆组件以及与第四升降管140相连的下传动内丝杆组件，下传动外丝杆组件和下传动内丝杆组件通过第二花键820共同转动。
本实施例中，上传动丝杆组件包括插接在第二伞齿轮322上的上传动内丝杆410以及与上传动内丝杆410螺纹连接的上传动内螺母420，上传动内螺母420通过上传动管530与第一升降管110的顶板相连，上传动内丝杆410随第二 伞齿轮322共同转动，使得上传动内螺母420沿轴向向上移动，通过上传动管530向第二升降管120的上方推动第一升降管110，使得第一升降管110相对于第二升降管120向上移动。
本实施例中，下传动外丝杆组件包括与第二传动齿轮331相连的下传动管730、与下传动管730共同转动以推动第三升降管130下降的下传动外丝杆710以及与下传动外丝杆710螺纹连接的下传动外螺母720，下传动外螺母720固定在第二升降管120上。下传动内丝杆组件包括连接在第四升降管140上的下传动内丝杆610以及与下传动内丝杆610螺纹连接的下传动内螺母620，下传动外丝杆710套接在下传动内丝杆610外侧，下传动内螺母620固定在下传动外丝杆710的底部并与下传动外丝杆710连动，下传动管730和下传动外丝杆710的顶部通过第二花键820传动，下传动内丝杆610可通过连接结构与第四升降管140的底壁相连，下传动内丝杆610与连接结构之间在轴向上固定，但可进行相对转动(连接结构可以为图中所示结构，也可以为轴承等任意实现该功能的结构)，使得下传动内丝杆610不带动第四升降管140转动。
本实施例中升降立柱的工作流程如下：
减速箱工作时，上传动内丝杆410随第二伞齿轮322共同转动，使得上传动内螺母420沿轴向向上移动，通过上传动管530向第二升降管120的上方推动第一升降管110，使得第一升降管110相对于第二升降管120向上移动。
同时第二伞齿轮322带动第二传动齿轮331转动，第二传动齿轮331的转动带动下传动管730转动，下传动管730通过第二花键820带动下传动外丝杆710转动，因为下传动外螺母720固定在第二升降管120不发生上下移动，所以下传动外丝杆710沿轴向推动第三升降管130的底壁，使得第三升降管130向第二升降管120的下方移动；在下传动外丝杆710转动的同时，固定在下传动 外丝杆710底部的下传动内螺母620随下传动外丝杆710共同转动并下降，使得下传动内丝杆610沿轴向推动第四升降管140，使得第四升降管140向第三升降管130的下方移动。
以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
Claims (10)
- 一种四节升降立柱，其特征在于：包括升降总成和相套接的四个升降管，四个所述升降管由内向外依次为第一升降管、第二升降管、第三升降管和第四升降管，升降总成包括三个丝杆组件和同时驱动三个丝杆组件运行的驱动组件，所述升降总成固定在第二升降管内，三个所述丝杆组件分别连接在第一升降管、第三升降管和第四升降管内；或者，所述升降总成固定在第三升降管内，三个所述丝杆组件分别连接在第一升降管、第二升降管和第四升降管内。
- 根据权利要求1所述的一种四节升降立柱，其特征在于：所述升降总成固定在第三升降管内，三个丝杆组件分别为与第二升降管相连的上传动内丝杆组件、与第一升降管相连的上传动外丝杆组件以及与第四升降管相连的下传动丝杆组件，所述上传动内丝杆组件和上传动外丝杆组件通过花键共同转动。
- 根据权利要求2所述的一种四节升降立柱，其特征在于：所述上传动内丝杆组件包括与驱动组件相连的上传动内丝杆以及与上传动内丝杆螺纹连接的上传动内螺母，上传动内螺母与第二升降管相连，所述上传动外丝杆组件包括上传动外丝杆以及与上传动外丝杆螺纹连接的上传动外螺母，上传动外丝杆套接在上传动内丝杆上与上传动内丝杆共同转动，上传动外螺母与第一升降管相连。
- 根据权利要求2或3所述的一种四节升降立柱，其特征在于：所述下传动丝杆组件包括下传动管、通过花键与下传动管共同转动以推动第四升降管下降的下传动外丝杆以及与下传动外丝杆螺纹连接的下传动外螺母，所述下传动外螺母固定在第三升降管上。
- 根据权利要求2或3所述的一种四节升降立柱，其特征在于：所述下传动丝杆组件包括与第四升降管相连的下传动内丝杆以及与下传动内丝杆螺纹连接的下传动内螺母，所述驱动组件与所述下传动内螺母相连并驱动下传动内螺母转动。
- 根据权利要求1所述的一种四节升降立柱，其特征在于：所述升降总成固定在第二升降管内，三个丝杆组件分别为与第一升降管相连的上传动丝杆组件、与第三升降管相连的下传动外丝杆组件以及与第四升降管相连的下传动内丝杆组件，所述上传动丝杆组件包括上传动内丝杆以及与上传动内丝杆螺纹连接的上传动内螺母，上传动内螺母与第一升降管相连，所述下传动外丝杆组件和下传动内丝杆组件通过花键共同转动。
- 根据权利要求6所述的一种四节升降立柱，其特征在于：所述下传动外丝杆组件包括下传动管、与下传动管共同转动以推动第三升降管下降的下传动外丝杆以及与下传动外丝杆螺纹连接的下传动外螺母，所述下传动外螺母固定在第二升降管上。
- 根据权利要求7所述的一种四节升降立柱，其特征在于：所述下传动内丝杆组件包括连接在第四升降管上的下传动内丝杆以及与下传动内丝杆螺纹连接的下传动内螺母，所述下传动外丝杆套接在下传动内丝杆外侧，所述下传动内螺母固定在下传动外丝杆的底部并与下传动外丝杆连动。
- 根据权利要求1所述的一种四节升降立柱，其特征在于：所述驱动组件包括电机和驱动三个丝杆组件的减速箱，所述减速箱包括与电机相连的蜗轮蜗杆装置以及与丝杆组件相连的第一传动装置和第二传动装置，所述第二传动装置和蜗轮蜗杆装置通过第一传动装置传动。
- 根据权利要求9所述的一种四节升降立柱，其特征在于：所述蜗轮蜗杆装置包括连接在电机上的蜗杆和与蜗杆相连的蜗轮，所述第一传动装置包括与蜗轮相连的第一伞齿轮、与第一伞齿轮啮合的第二伞齿轮以及与第二伞齿轮连动的第一传动齿轮，所述第二传动装置包括与第一传动齿轮啮合的第二传动齿轮。
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