WO2022068338A1 - 剪刀式抬升装置及抬车平台 - Google Patents

剪刀式抬升装置及抬车平台 Download PDF

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Publication number
WO2022068338A1
WO2022068338A1 PCT/CN2021/108399 CN2021108399W WO2022068338A1 WO 2022068338 A1 WO2022068338 A1 WO 2022068338A1 CN 2021108399 W CN2021108399 W CN 2021108399W WO 2022068338 A1 WO2022068338 A1 WO 2022068338A1
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WIPO (PCT)
Prior art keywords
scissors
scissor
driven wheel
scissor arm
driver
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PCT/CN2021/108399
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English (en)
French (fr)
Inventor
叶庆丰
戴有发
邱胜国
袁丹
周爱军
吴海维
郭义志
卞怀朋
Original Assignee
博众精工科技股份有限公司
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Application filed by 博众精工科技股份有限公司 filed Critical 博众精工科技股份有限公司
Publication of WO2022068338A1 publication Critical patent/WO2022068338A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Definitions

  • the present application relates to the technical field of battery swapping for electric vehicles, for example, to a scissor lift device and a lift platform.
  • the power battery of an electric vehicle generally takes many hours to charge, that is, the electric vehicle cannot be used during this period.
  • many electric vehicle manufacturers have developed vehicles that can replace the power battery.
  • the vehicle chassis is provided with a detachable power battery. When the power battery runs out of power, it can be replaced at the power exchange station.
  • the power exchange operation refers to removing the power battery of the car through the power exchange equipment, and immediately replacing another set of power batteries.
  • the power exchange station In order to move the power exchange equipment under the vehicle for the disassembly and installation of the power battery, the power exchange station needs to be equipped with a car lift platform. After the power exchange car is parked on the car lift platform, the car lift platform will lift the car.
  • the scissors-type lifting device generally includes a carrier 1, scissors 2, a base 3 and an oil cylinder 8, and the scissors 2 include a first scissor arm 21 and a second scissor arm 22 that are pivotally connected to a pivot 23 and are arranged crosswise,
  • the first scissor arm 21 is hinged to the base 3
  • the second scissor arm 22 is slidably connected to the base 3
  • the cylinder of the oil cylinder 8 is hinged to the base 3
  • the output end is hinged to the second scissor arm 22, and the scissors 2 are driven by the telescopic action of the oil cylinder Open or fold to raise and lower stage 1.
  • the initial height of the parking platform tends to be low-level, that is, the scissors lift device should be folded as much as possible during parking to reduce the height of the platform 1, and the more folded the scissors 2 are, the more the scissors are folded, the pusher required to open the scissors 2.
  • the oil cylinder 8 directly acts on the scissor arm to lift the car to open the scissors 2.
  • the load of the oil cylinder is extremely large, that is, a larger type of oil cylinder 8 is required, which is contrary to the development concept that the parking platform tends to be low-level.
  • the use of the oil cylinder to drive the scissors 2 also has disadvantages such as high cost, regular oil change and maintenance, and maintenance of easily polluted sites.
  • the screw drive mechanism commonly used in low-load lifting operations is difficult to bear the load of the above-mentioned opening scissors 2 .
  • the present application provides a scissor-type lifting device and a car-lifting platform, which can reduce the push/pull force required to open the scissors from the folded state, so that it is suitable to use a small, low-output driver to open the scissors, and is convenient for the car-lifting platform to obtain Lower initial height.
  • a carrying platform, scissors, a base and a driver the driver is configured to drive the scissors to open or fold to lift and lower the carrying platform
  • the scissors include a pivot shaft, and pivotally connected to the pivot shaft and cross-arranged a first scissor arm and a second scissor arm, one end of the first scissor arm is hinged with the base, and one end of the second scissor arm is slidably connected with the base;
  • the first lifting mechanism comprises: a driven wheel, which is pivotally connected to the pivot; and a guide part, which is connected to the output end of the driver and forms a slope; the driver can The guide portion is driven to move toward the driven wheel along a linear path, so that the driven wheel rolls up along the slope, so as to open the scissors in a folded state.
  • the pivot is pivotally connected to the first scissor arm at the midpoint of the first scissor arm, and the pivot is connected to the second scissor arm at the midpoint of the second scissor arm. pivot.
  • the scissor lift device includes two or more of the scissors arranged in parallel, and each of the scissors is pivotally connected to the pivot.
  • a second lifting mechanism is further included, and the second lifting mechanism is configured to engage and open the scissors when the driven wheel rolls to the top of the slope, so as to continue to lift the carrier.
  • the second lifting mechanism includes:
  • An engaging portion is fixedly connected with the second scissor arm, and the engaging portion can overlap with the guide portion when the driven wheel rolls to the top of the slope, so as to follow the guide portion along the move on a linear path.
  • the slope is in the form of a cam profile, and the end of the cam profile is formed with a constant velocity point, and when the driven wheel rolls to the constant velocity point, it is separated from the guide portion, and at the same time the engaging portion is separated from the guide portion. Overlapped with the guide portion, when the driven wheel rolls to the constant velocity point, the speeds of the first lifting mechanism and the second lifting mechanism in the vertical direction of lifting the stage are approximately equal .
  • a plurality of constant velocity points are formed at the end of the cam profile, and the plurality of constant velocity points are connected along the end of the cam profile to form a constant velocity profile curve.
  • the connecting portion includes a pull rod fixedly connected with the second scissor arm, one end of the pull rod is provided with a boss, and the guide portion includes a pull plate, when the driven wheel rolls to the When the guide part is separated, the pulling plate abuts on the boss, so as to drive the pulling rod to move along the linear path.
  • Some embodiments provide a car lift platform, including a parking platform, and the above-mentioned scissor lift device, where the parking platform is fixed on the carrier of the scissor lift device.
  • the driver of the scissor lift device is arranged outside the parking platform.
  • FIG. 1 is a schematic structural diagram of a scissor lift device in the related art when an automobile is lifted;
  • Fig. 2 is the three-dimensional structure schematic diagram of the car lift platform in the embodiment of the present application.
  • Fig. 3 is the side view of the lift platform in the embodiment of the present application when the scissors are folded;
  • FIG. 4 is a side view of the scissors-type lifting device in the embodiment of the present application when the scissors are folded;
  • FIG. 5 is a top view of the scissors-type lifting device in the embodiment of the present application when the scissors are folded;
  • Fig. 6 is the side view of the lift platform in the embodiment of the present application when the scissors are half opened;
  • FIG. 7 is a side view of the scissors-type lifting device in the embodiment of the present application when the scissors are half-opened;
  • FIG. 8 is a top view of the scissor lift device in the embodiment of the present application when the scissors are half opened;
  • Fig. 9 is the side view of the lift platform in the embodiment of the present application when the scissors are opened;
  • FIG. 10 is a side view of the scissors-type lifting device in the embodiment of the present application when the scissors are opened;
  • FIG. 11 is a top view of the scissors-type lifting device in the embodiment of the present application when the scissors are opened;
  • FIG. 13 is a schematic structural diagram of the driver of the car-lifting platform in the embodiment of the present application when the driver is disposed outside the car-lifting platform.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • connection may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • this embodiment provides a car-lifting platform, which can be used in electric vehicle swap stations or in places such as vehicle repair, inspection, and display, so as to lift the vehicle.
  • the car lift platform includes a parking platform 100 for parking a car and a scissor lift device 200 for lifting the parking platform 100 to lift the car.
  • the scissors 2 of the scissor lift device 200 are opened from the folded state. /
  • the pulling force is small, so it is suitable to use a small, low-output driver 4 to open the scissors 2, and it is convenient for the lift platform to obtain a lower initial height.
  • FIG. 3 to FIG. 8 Please refer to FIG. 3 to FIG. 8 below to introduce the scissor lift device 200 in detail.
  • the scissors-type lifting device 200 includes a carrier 1, scissors 2, a base 3 and a driver 4 for driving the scissors 2 to open or fold to lift the carrier 1.
  • the scissors 2 include a pair of scissors pivotally connected to the same pivot 23 and arranged crosswise.
  • the first scissor arm 21 and the second scissor arm 22, the first end of the first scissor arm 21 is hinged with the base 3, the second end is slidably connected with the carrier 1, and the first end of the second scissor arm 22 is slidably connected with the base 3 , the second end is hinged with the carrier 1 .
  • the two ends of the first scissor arm 21 can also be slidably connected to the base 3 and the carrier 1 respectively, and the two ends of the second scissor arm 22 are hinged to the base 3 and the carrier 1 respectively. This is not specifically limited.
  • a pair of scissors 2 are arranged side by side, and one end of the pair of first scissor arms 21 slidably connected to the carrier 1 is hinged with a rotating shaft support seat 24 , and the pair of rotating shaft support seat 24 passes through the first pair of scissor arms 21 .
  • a connecting plate 25 is connected, two ends of the first connecting plate 25 are installed with sliding blocks 26 arranged in parallel with the rotating shaft support base 24, and the bottom surface of the carrier 1 is provided with sliding rails 27 slidably connected with the sliding blocks 26, thereby forming the first scissors
  • the arm 21 is slidably connected to the stage 1 .
  • the above-mentioned rotating shaft support seat 24 and the slider 26 adopt a parallel installation structure.
  • This installation method can make the stage 1 and the parking platform 100 fixed on the stage 1 more efficient.
  • the low height dimension also enables the parking platform 100 to obtain a lower initial height.
  • the pair of sliding blocks 26 are connected by the first connecting plate 25, which can form a force balance effect on the sliding rail 27 and the rotating shaft support seat 24, so that when the sliding rail 27 bears the load of the first scissor arm 21, there is no load offset. additional torque.
  • the above structure is also applied between the second scissor arm 22 and the base 3 , wherein the slide rail 27 and the slider 26 are arranged on the base 3 , thereby forming the second scissor arm 22 and the base 3 . Sliding connection of base 3.
  • first scissor arm 21 and the second scissor arm 22 can also use other forms of guides (such as rollers with wheel grooves, etc.) in addition to the slider 26 and the slide rail 27 for active guidance,
  • the number of scissors 2 may also be more than three, which is not specifically limited here.
  • the scissor lift device 200 further includes a first lift mechanism, and the first lift mechanism includes a driven wheel 5 and a guide portion 6 .
  • the driven wheel 5 is pivotally connected to the above-mentioned pivot shaft 23
  • the guide portion 6 is connected to the output end of the driver 4 , and has a slope 61 (refer to FIG. 5 ).
  • the driver 4 can drive the guide portion 6 to move toward the driven wheel 5 along a linear path, so that the driven wheel 5 rolls upward along the slope 61 to open the scissors 2 in the folded state.
  • FIG. 3 , FIG. 4 and FIG. 5 Please refer to FIG. 3 , FIG. 4 and FIG. 5 together.
  • the driver 4 moves along the horizontal linear path through the push/pull guide portion 6 to the guide portion 6 and the driven wheel. 5 After the contact, the bottom of the slope 61 is cut under the driven wheel 5, and the driven wheel 5 can be rolled up along the slope 61 as the guide part 6 continues to move, thereby gradually opening the scissors 2, please refer to Figures 6 and 7 and Figure 8.
  • the slope 61 of the above-mentioned guide portion 6 is conducive to decomposing the vehicle based on the slope angle of the slope 61 to the driver by means of the scissors 2 and the driven wheel 5. 4, thereby reducing the push/pull force required to open the scissors 2, which is more suitable for opening when the scissors 2 are fully or nearly fully folded.
  • the practitioner can choose the screw nut mechanism driven by the motor 41 as shown in FIG. 3 to FIG. 8 as the driver 4 to drive the guide part 6, so as to replace the oil cylinder and reduce the cost of the scissor lift device 200 and the cost of the parking platform 100. Initial height.
  • the driver 4 is arranged below the parking platform 100 and is located on one side of the carrier 1 and the base 3 . If the site conditions permit, as shown in FIG. 13, the driver 4 can also be arranged outside the parking platform 100, and is connected with the screw nut mechanism that drives the guide portion 6 to move through a transmission mechanism such as a chain or a belt.
  • the above structure can prevent the motor 41 from occupying the structural space within the contour of the parking platform 100 , and is convenient for sinking and arranging a wheel centering mechanism for positioning the vehicle in the parking platform 100 .
  • the pivot shaft 23 is located at the midpoint of the first scissor arm 21 and the second scissor arm 22 . It can be known from common sense that when the middle point of the rod is displaced, its displacement is half of the sum of the displacements of the two ends of the rod.
  • the first scissor arm 21 and the second scissor arm 22 can be regarded as rods.
  • the bottom of the first scissor arm 21 is hinged with the base 3, that is, when the first scissor arm 21 rotates, its bottom does not produce a height displacement, and when the midpoint of the first scissor arm 21 forms a height displacement H1, its top is A height displacement H 2 twice as high as H 1 is formed, and the driven wheel 5 is pivotally connected to the pivot shaft 23. Therefore, the climbing height of the driven wheel 5 is the lift height of the pivot shaft 23, and the pivot shaft 23 is arranged on the first scissor arm 21. and the middle point of the second scissor arm 22, the stroke of the slope 61 of the guide part 6 can be enlarged, the height dimension of the guide part 6 can be reduced, and the installation of the driven wheel 5 can be simplified.
  • the force of the scissor arm 22 can also be more balanced.
  • the two scissors 2 are both pivotally connected to the above-mentioned pivot shaft 23.
  • both ends of the pivot shaft 23 are pivotally connected to the two scissors 2, and the inner sides of the two scissors 2 are respectively arranged
  • the two scissors 2 are connected by the same pivot shaft 23 , so that the structure of the scissor lift device 200 is more stable.
  • the scissor lift device 200 also includes a second lift mechanism, the second lift mechanism is configured to engage and open the scissors 2 when the driven wheel 5 rolls to the top of the detached slope 61, so as to continue to lift the carrier 1, so as to be connected with the first lift The mechanism relay lifts the carrier platform 1 to meet the lifting height requirement of the parking platform 100 .
  • the second lifting mechanism includes an engaging portion 7 , the engaging portion 7 is fixedly connected with the second scissor arm 22 through the second connecting plate 28 , and the engaging portion 7 can roll when the driven wheel 5 rolls to the slope 61 .
  • the top end overlaps with the guide portion 6 to move along a linear path with the guide portion 6 .
  • the connecting portion 7 includes a pull rod 71 that is fixedly connected with the second scissor arm 22 , a boss 711 is provided at one end of the pull rod 71 away from the second scissor arm 22 , and the guide portion 6 includes a pull plate 62 .
  • the pull plate 62 is in contact with the boss 711 to drive the pull rod 71 to move along a linear path.
  • a second connecting plate 28 is connected between the bottom ends of the pair of second scissor arms 22 , and a pair of pull rods 71 are symmetrically arranged on the second connecting plate 28 along the center line of the second connecting plate 28 .
  • a pair of pull rods 71 extend toward the bottom ends of the pair of first scissor arms 21 .
  • the pulling plate 62 is disposed between the two guiding parts 6 , and the pulling plate 62 is located on the side of the boss 711 facing the second connecting plate 28 .
  • the driver 4 includes a motor 41 , a lead screw 42 rotatably connected to the base 3 and extending in the direction of the linear path, and a nut 43 screwed to the lead screw 42 , and the nut 43 is fixedly connected to the pull plate 62 .
  • the motor 41 drives the screw 42 to rotate to open the scissors 2
  • the pull plate 62 moves along a linear path at the first speed
  • the scissors 2 are slowly opened by the driven wheel 5 rolling on the slope 61 of the guide part 6, and the second connecting The plate 28 moves along the linear path at a second speed that is less than the first speed.
  • the driven wheel 5 climbs to the point of separation from the slope 61 of the guide portion 6
  • the boss 711 just abuts against the pull plate 62
  • the pulling force of the pull rod 71 Starting to act on the second connecting plate 28, the scissors 2 are pulled to continue to open, that is, the parking platform 100 continues to be lifted.
  • the above-mentioned parameters can be satisfied when the driven wheel 5 climbs to the detachment point that separates from the slope 61 of the guide portion 6.
  • the purpose of the boss 711 being just abutting with the pulling plate 62 is that the above-mentioned parameter settings are not described and limited here.
  • the speed at which the first lifting mechanism lifts the stage 1 in the vertical direction is the first lifting speed
  • the convex The speed at which the stage 711 just abuts against the pulling plate 62 and pulls the first scissor arm 21 to lift the stage 1 is the second lifting speed.
  • the first lifting speed and the second lifting speed should be approximately equal.
  • the slope 61 is a cam profile, and the end of the cam profile is formed with a constant velocity point 6111, when the driven wheel 5 rolls to the constant velocity point 6111, it is separated from the guide portion 6, At the same time, the connecting part 7 overlaps with the guiding part 6, and when the driven wheel 5 rolls to the constant velocity point 6111, the speed of the first lifting mechanism and the second lifting mechanism in the vertical direction of lifting the stage 1 is approximately equal.
  • a plurality of constant velocity points 6111 are connected along the end of the cam profile to form a constant velocity profile curve 611.
  • the speed of the carrier 1 is the same as When the pull rod 71 pulls the first scissor arm 21, the speed of the stage 1 corresponds to the time, so that any point in the constant velocity contour curve area can be used as the separation point of the driven wheel 5 and the cam contour, that is, the breakaway point of the pull rod 71. , to ensure that at the moment when the first lifting mechanism and the second lifting mechanism relay the lifting of the carrier 1, the carrier 1 does not undergo a sudden change in speed, and avoids the formation of mechanical shock and jitter.
  • the above-mentioned constant velocity profile curve 611 can be designed by using the geometric diagram method, that is, based on the inherent size of the scissors 2, the lifting process of the driven wheel 5 and the instantaneous motion law of the first lifting mechanism and the second lifting mechanism relay lifting the stage 1 are calculated, according to the displacement curve. That is, the cam profile curve of the guide portion 6 and the above-mentioned constant velocity profile curve 611 can be drawn, which will not be repeated here.
  • the driver 4 moves along the horizontal linear path by pushing/pulling the guide part 6 until the guide part 6 contacts the driven wheel 5, The bottom of the slope is cut under the driven wheel 5, and as the guide part 6 continues to move, the driven wheel 5 can be rolled up along the slope, thereby gradually opening the scissors 2.
  • Two scissor arms 22, the slope structure of the above-mentioned guide portion 6 can be beneficial to decompose the load applied to the driver 4 by the scissors 2 and the driven wheel 5 based on the slope angle of the slope, thereby reducing the push/pull force required to open the scissors, It is more suitable for opening when the scissors 2 are fully or nearly fully folded.
  • the implementer can choose a screw-nut mechanism driven by a motor as a driver to drive the guide portion 6 , so as to replace the oil cylinder and reduce the cost of the scissor lift device 200 and the initial height of the parking platform 100 .

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Abstract

一种剪刀式抬升装置及抬车平台。该剪刀式抬升装置包括：载台(1)、剪刀(2)、底座(3)、驱动器(4)以及第一抬升机构。其中，驱动器设置为驱动剪刀开启或收折以升降载台；第一抬升机构包括：从动轮(5)，轴接于剪刀的枢轴(23)；及导引部(6)，连接于驱动器的输出端，并形成有一坡面(61)；驱动器能驱动导引部沿一线性路径朝向从动轮移动，使从动轮沿坡面向上滚动，以开启呈收折状态的剪刀。

Description

剪刀式抬升装置及抬车平台
本申请要求申请日为2020年9月29日、申请号为202011051989.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电动汽车换电技术领域，例如涉及一种剪刀式抬升装置及抬车平台。
背景技术
电动汽车的动力电池充电一般需要多个小时，即在此期间电动汽车无法被使用。为解决此问题，很多电动汽车厂商已经开发了能够更换动力电池的车辆，其中，车辆底盘上设置有可拆卸的动力电池，当动力电池亏电时即可在换电站进行换电作业。
具体而言，换电作业是指通过换电设备将汽车的动力电池取下，并即刻更换另一组动力电池。为能使换电设备移入车辆下方进行动力电池的拆卸和安装，换电站需设置抬车平台，待换电汽车停靠于该抬车平台后，由该抬车平台将汽车抬升。
因成本相对较低，剪刀式抬升装置是抬车平台常采用的抬升装置。请参阅图1，剪刀式抬升装置一般包括载台1、剪刀2、底座3和油缸8，剪刀2包括枢接于一枢轴23且交叉设置的第一剪刀臂21和第二剪刀臂22，第一剪刀臂21与底座3铰接，第二剪刀臂22与底座3滑动连接，油缸8的缸体铰接于底座3，输出端则铰接于第二剪刀臂22，通过油缸的伸缩动作驱动剪刀2开启或收折以升降载台1。
为提高用户体验，停车平台的初始高度趋于低层化，即需剪刀式抬升装置在停车期间尽量收折以降低载台1高度，而剪刀2的愈为收折，开启剪刀2所需的推/拉力则愈大，通过油缸8直接作用于剪刀臂提升汽车开启剪刀2，油缸的负载极大，也即需要采用较大型号的油缸8，与停车平台趋于低层的发展理念相左。此外，采用油缸驱动剪刀2还存在着成本高、需要定期换油维护、维护易污染场地等缺点。而常见于低负载升降作业的丝杆驱动机构则难以承受上述开启剪刀2的负载。
发明内容
本申请提供一种剪刀式抬升装置及抬车平台，能够降低剪刀由收折状态开启时所需的推/拉力，从而适于采用小型、较低输出功率的驱动器开启剪刀，便于抬车平台获得较低的初始高度。
一些实施例提供一种剪刀式抬升装置，包括：
载台、剪刀、底座和驱动器，所述驱动器设置为驱动所述剪刀开启或收折以升降所述载台，其中，所述剪刀包括枢轴，以及枢接于所述枢轴且交叉设置的第一剪刀臂和第二剪刀臂，所述第一剪刀臂的一端与所述底座铰接，所述第二剪刀臂的一端与所述底座滑动连接；
第一抬升机构，其中，所述第一抬升机构包括：从动轮，轴接于所述枢轴；及导引部，连接于所述驱动器的输出端，并形成有一坡面；所述驱动器能驱动所述导引部沿一线性路径朝向所述从动轮移动，使所述从动轮沿所述坡面向上滚动，以开启呈收折状态的所述剪刀。
可选地，所述枢轴在所述第一剪刀臂的中点与所述第一剪刀臂枢接，且所述枢轴在所述第二剪刀臂的中点与所述第二剪刀臂枢接。
可选地，所述剪刀式抬升装置包括两个以上并列设置的所述剪刀，每个所述剪刀枢接于所述枢轴。
可选地，还包括第二抬升机构，所述第二抬升机构被配置为：在所述从动轮滚动至脱离所述坡面的顶端时衔接开启所述剪刀，以继续抬升所述载台。
可选地，所述第二抬升机构包括：
衔接部，与所述第二剪刀臂固定连接，所述衔接部能在所述从动轮滚动至所述坡面的顶端时与所述导引部搭接，以随所述导引部沿所述线性路径移动。
可选地，所述坡面呈凸轮轮廓，所述凸轮轮廓的末端形成有等速点，当所述从动轮滚动至所述等速点时与所述导引部分离，同时所述衔接部与所述导引部搭接，所述从动轮滚动至所述等速点时，所述第一抬升机构及所述第二抬升机构在竖直方向上的抬升所述载台的速度大致相等。
可选地，所述凸轮轮廓的末端形成有多个等速点，且所述多个等速点沿所述凸轮轮廓的末端连接形成等速廓曲线。
可选地，所述衔接部包括与所述第二剪刀臂固定连接的拉杆，所述拉杆的一端设置有凸台，所述导引部包括拉板，当所述从动轮滚动至与所述导引部分离时，所述拉板与所述凸台抵接，以带动所述拉杆沿所述线性路径移动。
一些实施例提供一种抬车平台，包括停车平台，以及如上所述的剪刀式抬升装置，所述停车平台固定于所述剪刀式抬升装置的所述载台上。
可选地，所述剪刀式抬升装置的所述驱动器设置于所述停车平台的外部。
附图说明
图1是相关技术中剪刀式抬升装置抬升汽车时的结构示意图；
图2是本申请实施例中的抬车平台的立体结构示意图；
图3是本申请实施例中的抬车平台在剪刀收折时的侧视图；
图4是本申请实施例中的剪刀式抬升装置在剪刀收折时的侧视图；
图5是本申请实施例中的剪刀式抬升装置在剪刀收折时的俯视图；
图6是本申请实施例中的抬车平台在剪刀半开启时的侧视图；
图7是本申请实施例中的剪刀式抬升装置在剪刀半开启时的侧视图；
图8是本申请实施例中的剪刀式抬升装置在剪刀半开启时的俯视图；
图9是本申请实施例中的抬车平台在剪刀开启时的侧视图；
图10是本申请实施例中的剪刀式抬升装置在剪刀开启时的侧视图；
图11是本申请实施例中的剪刀式抬升装置在剪刀开启时的俯视图；
图12是本申请实施例中的导引部的坡面的结构示意图；
图13是本申请实施例中的抬车平台的驱动器设置于抬车平台外部时的结构示意图。
图中：
100、停车平台；200、剪刀式抬升装置；1、载台；2、剪刀；21、第一剪刀臂；22、第二剪刀臂；23、枢轴；24、转轴支撑座；25、第一连板；26、滑块；27、滑轨；28、第二连板；3、底座；4、驱动器；41、电机；42、丝杆；43、螺母；5、从动轮；6、导引部；61、坡面；611、等速廓曲线；6111、等速点；62、拉板；7、衔接部；71、拉杆；711、凸台；8、油缸。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系。对于本领域 的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，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。
在本实施例的描述中，术语“上”、“下”、“右”、等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
请参阅图2，本实施例提供了一种抬车平台，该抬车平台可以应用于电动汽车换电站或汽车修理、检测、展示等场所中，以用于抬升汽车。
该抬车平台包括用于停放汽车的停车平台100以及用于抬升该停车平台100以抬升汽车的剪刀式抬升装置200，该剪刀式抬升装置200的剪刀2由收折状态开启时所需的推/拉力小，从而适于采用小型、较低输出功率的驱动器4开启剪刀2，便于抬车平台获得较低的初始高度。
下面请参阅图3至图8，以详细介绍该剪刀式抬升装置200。
该剪刀式抬升装置200，包括载台1、剪刀2、底座3和用于驱动剪刀2开启或收折以升降载台1的驱动器4，剪刀2包括枢接于同一枢轴23且交叉设置的第一剪刀臂21和第二剪刀臂22，第一剪刀臂21的第一端与底座3铰接、第二端与载台1滑动连接，第二剪刀臂22的第一端与底座3滑动连接，第二端与载台1铰接。在其他可选的实施方式中，还可以为第一剪刀臂21的两端分别与底座3和载台1滑动连接，第二剪刀臂22的两端分别与底座3和载台1铰接，在此不作具体限定。
如图2所示，本实施例中，一对剪刀2并列设置，一对第一剪刀臂21的与载台1滑动连接的一端均铰接有转轴支撑座24，一对转轴支撑座24通过第一连板25联结，第一连板25的两端安装有与转轴支撑座24并列设置的滑块26，载台1底面设置有与滑块26滑动连接的滑轨27，从而形成第一剪刀臂21与载台1的滑动连接。
相较于转轴支撑座24与滑块26垂直安装，上述转轴支撑座24与滑块26采用了并列安装的结构，该安装方式可以使载台1及载台1上固定的停车平台100获得更低的高度尺寸，也即能够使该停车平台100可以获得更低的初始高度。
同时，一对滑块26采用第一连板25联结，可以对滑轨27、转轴支撑座24形成力平衡作用，从而在滑轨27承受第一剪刀臂21载荷时，不存在载荷偏置所带来的附加转矩。
如图2所示，本实施例中，上述结构同样应用于第二剪刀臂22与底座3之间，其中，滑轨27与滑块26设置在底座3上，从而形成第二剪刀臂22与底座3的滑动连接。
在一些可选的实施方式中，第一剪刀臂21和第二剪刀臂22还可以采用除滑块26和滑轨27外的其他形式的导向件(如滚轮配合轮槽等)进行活动导向，剪刀2的数量亦可以为三个以上，在此不做具体限定。
本实施例中，该剪刀式抬升装置200还包括第一抬升机构，该第一抬升机构包括从动轮5和导引部6。从动轮5轴接于上述枢轴23，导引部6连接于驱动器4的输出端，并形成有一坡面61(参考图5)。驱动器4能驱动导引部6沿一线性路径朝向从动轮5移动，使从动轮5沿坡面61向上滚动，以开启呈收折状态的剪刀2。
请一并参阅图3、图4和图5，当需要提升处于初始高度的载台1时，驱动器4通过推/拉导引部6沿着水平的线性路径移动至导引部6与从动轮5接触后，坡面61的底部切入从动轮5下方，随着导引部6的继续移动可使从动轮5沿坡面61向上滚动，从而逐渐将剪刀2开启，可参考图6、图7和图8。
相较于直接以水平的推/拉力作用于第二剪刀臂22，上述导引部6的坡面61，有利于基于坡面61的坡角，分解汽车借由剪刀2及从动轮5向驱动器4施加的负荷，从而降低其开启剪刀2所需的推/拉力，这比较适用于在剪刀2完全或趋近于完全收折状态下的开启。实施者更可选用如图3至图8所示的由电机41驱动的丝杆螺母机构作为驱动器4驱动导引部6，从而替代油缸，降低该剪刀式抬升装置200的成本及停车平台100的初始高度。
为使该抬车平台的布置现场规整，本实施例中，驱动器4设置于停车平台100下方，并位于载台1和底座3的一侧。而在场地条件允许的情况下，如图13所示，驱动器4还可以设置于停车平台100的外部，并通过链条或者皮带等传动机构与驱动导引部6移动的丝杆螺母机构传动连接，上述结构可以避免电 机41占用停车平台100轮廓范围内的结构空间，便于在停车平台100内下沉布置用于定位汽车的车轮归中机构等。
本实施例中，枢轴23位于第一剪刀臂21和第二剪刀臂22的中点。常理可知，当杆中点发生位移时，其位移为杆两端点位移和的一半，于本实施例中，第一剪刀臂21和第二剪刀臂22均可视为杆，以第一剪刀臂21为例，第一剪刀臂21的底部与底座3铰接，即第一剪刀臂21转动时其底部不产生高度位移，当第一剪刀臂21的中点形成高度位移H 1时，其顶端即形成两倍于H 1的高度位移H 2，而从动轮5轴接于枢轴23，因此，从动轮5的爬升高度即枢轴23的抬升高度，将枢轴23设置于第一剪刀臂21和第二剪刀臂22的中点，可以放大导引部6的坡面61的行程，减小导引部6的高度尺寸，使从动轮5的安装更加简化，第一剪刀臂21和第二剪刀臂22的受力也可更加平衡。
同时，本实施例中，两个剪刀2均枢接于上述枢轴23，如图1所示，该枢轴23的两端分别枢接于两个剪刀2，两个剪刀2的内侧分别设置有一从动轮5，借由导向结构滑动连接于底板的两个导引部6与两个从动轮5对应设置。两个剪刀2借由同一枢轴23联结，使得该剪刀式抬升装置200的结构更加稳定。
示例性地，为将载台1提升至特定的抬升高度，导引部6的坡面61越平缓，从动轮5沿坡面61的行程即越长，所需驱动器4提供的拉力也越小，过短的导引部6不适于降低驱动器4负载，过长的导引部6则不适于安装，为此，请参阅图9至图11，并结合图6至图8，本实施例中，该剪刀式抬升装置200还包括第二抬升机构，第二抬升机构被配置为从动轮5滚动至脱离坡面61的顶端时衔接开启剪刀2，以继续抬升载台1，从而与第一抬升机构接力抬升载台1，满足停车平台100的提升高度需求。
在一些实施例中，该第二抬升机构包括一衔接部7，该衔接部7通过第二连板28与第二剪刀臂22固定连接，衔接部7能在从动轮5滚动至坡面61的顶端时与导引部6搭接，以随导引部6沿线性路径移动。
于本实施例中，衔接部7包括与第二剪刀臂22固定连接的拉杆71，拉杆71远离第二剪刀臂22的一端设置有凸台711，导引部6包括拉板62，当从动轮5滚动与导引部6分离时，拉板62与凸台711抵接，以带动拉杆71沿线性路径移动。
如图5和图8所示，一对第二剪刀臂22的底端之间连接有第二连板28，一对拉杆71沿第二连板28的中线对称设置于第二连板28上，一对拉杆71朝向 一对第一剪刀臂21的底端方向延伸。两个导引部6之间设置有上述拉板62，拉板62位于凸台711朝向第二连板28的一侧。驱动器4包括电机41、转动连接于底座3并沿上述线性路径方向延伸的丝杆42以及螺接于丝杆42的螺母43，螺母43与拉板62固定连接。
当电机41驱动丝杆42转动以开启剪刀2时，拉板62以第一速度沿线性路径移动，剪刀2借由滚动于导引部6的坡面61的从动轮5缓慢开启，第二连板28以小于第一速度的第二速度沿线性路径移动。当从动轮5爬升至与导引部6的坡面61脱离的脱离点时，凸台711恰好与拉板62抵接，当螺母43带动拉板62继续沿线性路径移动时，拉杆71的拉力开始作用于第二连板28，拉动剪刀2继续开启，即继续抬升停车平台100。
示例性地，综合调整拉杆71的长度、第二连板28与拉板62之间的距离等参数即可满足上述当从动轮5爬升至与导引部6的坡面61脱离的脱离点时凸台711恰好与拉板62抵接的目的，因此，上述参数设置在此不作赘述及限定。
在一些实施例中，设从动轮5爬升至与导引部6的坡面61脱离的脱离点时，第一抬升机构在竖直方向上抬升载台1的速度为第一抬升速度，设凸台711恰好与拉板62抵接并拉动第一剪刀臂21抬升载台1的速度为第二抬升速度。为能使第一抬升机构及第二抬升机构接力抬升载台1的瞬间，载台1保持于平稳的提升状态，第一抬升速度和第二抬升速度应当大致相等。
为此，请参阅图12，本实施例中，坡面61呈一凸轮轮廓，凸轮轮廓的末端形成有等速点6111，当从动轮5滚动至等速点6111时与导引部6分离，同时衔接部7与导引部6搭接，从动轮5滚动至等速点6111时，第一抬升机构及第二抬升机构在竖直方向上的抬升载台1的速度大致相等。
基于剪刀式抬升装置200固有的结构原因，第一剪刀臂21的底端匀速沿线性路径移动并开启剪刀2时，剪刀2上方的载台1的抬升速度并非匀速，为避免因装配误差或零部件尺寸公差带来过度影响，本实施例中，多个等速点6111沿凸轮轮廓的末端连接形成等速廓曲线611，从动轮5沿等速廓曲线611提升时载台1的速度与同一时间由拉杆71拉动第一剪刀臂21时载台1的速度一致对应，从而使得此等速轮廓曲线区域内的任意一点均可作为从动轮5与凸轮轮廓分离也即拉杆71接力切入的脱离点，确保第一抬升机构及第二抬升机构接力抬升载台1的瞬间，载台1不发生速度突变，避免形成机械冲击和抖动。
上述等速廓曲线611可以采用几何图解法设计，即基于剪刀2固有尺寸计 算从动轮5升高过程以及第一抬升机构及第二抬升机构接力抬升载台1的瞬间的运动规律，根据位移曲线即可绘制导引部6的凸轮轮廓曲线以及上述等速廓曲线611，在此不做赘述。
本申请提供的剪刀式抬升装置，当需要提升处于初始高度的载台1时，驱动器4通过推/拉导引部6沿着水平的线性路径移动至导引部6与从动轮5接触后，坡面的底部切入从动轮5下方，随着导引部6的继续移动可使从动轮5沿坡面向上滚动，从而逐渐将剪刀2开启，相较于直接以水平的推/拉力作用于第二剪刀臂22，上述导引部6的坡面结构能够有利基于坡面的坡角分解汽车借由剪刀2及从动轮5向驱动器4施加的负荷，从而降低开启剪刀所需的推/拉力，比较适用于在剪刀2完全或趋近于完全收折状态下的开启。实施者更可选用由电机驱动的丝杆螺母机构作为驱动器驱动导引部6，从而替代油缸，降低该剪刀式抬升装置200的成本及停车平台100的初始高度。

Claims (10)

  1. 一种剪刀式抬升装置，包括：
    载台(1)、剪刀(2)、底座(3)和驱动器(4)，所述驱动器(4)设置为驱动所述剪刀(2)开启或收折以升降所述载台(1)，其中，所述剪刀(2)包括枢轴(23)，以及枢接于所述枢轴(23)且交叉设置的第一剪刀臂(21)和第二剪刀臂(22)，所述第一剪刀臂(21)的一端与所述底座(3)铰接，所述第二剪刀臂(22)的一端与所述底座(3)滑动连接；
    第一抬升机构，其中，所述第一抬升机构包括：从动轮(5)，轴接于所述枢轴(23)；及导引部(6)，连接于所述驱动器(4)的输出端，并形成有一坡面(61)；所述驱动器(4)能驱动所述导引部(6)沿一线性路径朝向所述从动轮(5)移动，使所述从动轮(5)沿所述坡面(61)向上滚动，以开启呈收折状态的所述剪刀(2)。
  2. 根据权利要求1所述的剪刀式抬升装置，其中，所述枢轴(23)在所述第一剪刀臂(21)的中点与所述第一剪刀臂(21)枢接，且所述枢轴(23)在所述第二剪刀臂(22)的中点与所述第二剪刀臂(22)枢接。
  3. 根据权利要求1所述的剪刀式抬升装置，其中，所述剪刀式抬升装置包括两个以上并列设置的所述剪刀(2)，每个所述剪刀(2)枢接于所述枢轴(23)。
  4. 根据权利要求1所述的剪刀式抬升装置，还包括第二抬升机构，所述第二抬升机构被配置为：在所述从动轮(5)滚动至脱离所述坡面(61)的顶端时衔接开启所述剪刀(2)，以继续抬升所述载台(1)。
  5. 根据权利要求4所述的剪刀式抬升装置，其中，所述第二抬升机构包括：
    衔接部(7)，与所述第二剪刀臂(22)固定连接，所述衔接部(7)能在所述从动轮(5)滚动至所述坡面(61)的顶端时与所述导引部(6)搭接，以随所述导引部(6)沿所述线性路径移动。
  6. 根据权利要求5所述的剪刀式抬升装置，其中，所述坡面(61)呈凸轮轮廓，所述凸轮轮廓的末端形成有等速点(6111)，当所述从动轮(5)滚动至所述等速点(6111)时与所述导引部(6)分离，同时所述衔接部(7)与所述导引部(6)搭接，所述从动轮(5)滚动至所述等速点(6111)时，所述第一抬升机构及所述第二抬升机构在竖直方向上的抬升所述载台(1)的速度大致相等。
  7. 根据权利要求6所述的剪刀式抬升装置，其中，所述凸轮轮廓的末端形成有多个等速点(6111)，且所述多个等速点(6111)沿所述凸轮轮廓的末端连 接形成等速廓曲线(611)。
  8. 根据权利要求5所述的剪刀式抬升装置，其中，所述衔接部(7)包括与所述第二剪刀臂(22)固定连接的拉杆(71)，所述拉杆(71)的一端设置有凸台(711)，所述导引部(6)包括拉板(62)，当所述从动轮(5)滚动至与所述导引部(6)分离时，所述拉板(62)与所述凸台(711)抵接，以带动所述拉杆(71)沿所述线性路径移动。
  9. 一种抬车平台，包括停车平台(100)，以及如权利要求1-8任意一项所述的剪刀式抬升装置(200)，所述停车平台(100)固定于所述剪刀式抬升装置(200)的所述载台(1)上。
  10. 根据权利要求9所述的抬车平台，其中，所述剪刀式抬升装置(200)的所述驱动器(4)设置于所述停车平台(100)的外部。
PCT/CN2021/108399 2020-09-29 2021-07-26 剪刀式抬升装置及抬车平台 WO2022068338A1 (zh)

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