WO2018137124A1 - 一种扭距无级调节传动装置 - Google Patents

一种扭距无级调节传动装置 Download PDF

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Publication number
WO2018137124A1
WO2018137124A1 PCT/CN2017/072396 CN2017072396W WO2018137124A1 WO 2018137124 A1 WO2018137124 A1 WO 2018137124A1 CN 2017072396 W CN2017072396 W CN 2017072396W WO 2018137124 A1 WO2018137124 A1 WO 2018137124A1
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stepless adjustment
drive
crank
transmission
shaft
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PCT/CN2017/072396
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English (en)
French (fr)
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翁颇颖
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翁颇颖
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Priority to PCT/CN2017/072396 priority Critical patent/WO2018137124A1/zh
Publication of WO2018137124A1 publication Critical patent/WO2018137124A1/zh

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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
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/20—Crank gearings; Eccentric gearings with adjustment of throw

Definitions

  • the invention belongs to a mechanical transmission system, in particular to a torque stepless adjustment transmission device.
  • the object of the present invention is to provide a torque stepless adjustment transmission device.
  • the stepless adjustment mechanism By providing a stepless adjustment mechanism on a rotating crank, the stepless adjustment mechanism adjusts the distance between a drive connector and the axis of the power shaft, thereby realizing the crank.
  • the drive connector has a stepless adjustment of the rotational torque.
  • a torque stepless adjustment transmission device comprises a crank driven by a power shaft, wherein a crank is provided with a drive connector, the drive linker is connected to push one or more drive arms, and the drive arm drives the power device; a stepless adjustment mechanism is disposed on the crank handle, the drive connector is connected to the stepless adjustment mechanism, and a stepless adjustment controller controls the stepless adjustment mechanism to adjust the drive connector to deviate from the axis of the power shaft on the crank The distance, in turn, enables the stepless adjustment of the rotational torque of the drive connector on the crank.
  • the solution further includes: the stepless adjustment mechanism includes a screw and a screw rotation drive, the screw axis is perpendicularly intersected with an axis of the power shaft, and the drive connector is meshed with the screw by a screw sleeve, and the screw rotation drives the drive connector along The screw axis reciprocates.
  • the stepless adjustment mechanism includes a screw and a screw rotation drive, the screw axis is perpendicularly intersected with an axis of the power shaft, and the drive connector is meshed with the screw by a screw sleeve, and the screw rotation drives the drive connector along The screw axis reciprocates.
  • the screw rotation drive is a servo motor or a DC motor
  • the power supply of the servo motor or the DC motor is connected to the stepless adjustment controller through an electrical contact slip ring disposed on the power shaft.
  • stepless adjustment controller is an adjustable control switch.
  • the power device is a hydraulic pump or an air pump
  • the drive arm is a piston arm of a hydraulic pump or a cylinder piston arm of an air pump.
  • the power device is a gear transmission
  • the drive arm is provided with a rack
  • the gear transmission has a transmission shaft
  • the transmission shaft is provided with an overrunning clutch
  • the overrunning clutch is connected with a transmission gear.
  • the transmission gear meshes with the rack on the driving arm, and the driving link pushes the driving arm to perform reciprocating linear motion
  • the reciprocating linear motion driving arm drives the transmission gear to rotate forward and backward through the rack, and the transmission gear passes the overrunning clutch Drive the drive shaft to make one direction of rotation.
  • a rotating balance block is symmetrically disposed on both sides of the screw shaft around the power axis.
  • the solution is further that the balance weight is rotatably adjustable on the crank by a rotating shaft.
  • the drive linker is respectively provided with an elongated rack on both sides of the screw, and a circular arc gear, a long rack and a circle are arranged around the balance block rotating shaft on the balance block.
  • the curved gears mesh with each other to drive the linker to move, and the long-shaped rack drives the circular-shaped gear to rotate to adjust the distance between the center of gravity of the balance weight and the axis of the power shaft.
  • the rotational torque is large, and the distance between the center of gravity of the balance block and the axis of the power shaft is large.
  • the rotation torque is small, the distance between the center of gravity of the balance block and the axis of the power shaft is small; and the adjustment of the crank rotation balance is realized.
  • the power shaft is an engine output shaft or a power motor output shaft.
  • the invention has the beneficial effects that the structure is simple and convenient to adjust, and the advantages thereof are:
  • the acceleration process is not frustrated, the acceleration process can be achieved in 1-3 seconds.
  • Figure 1 is a schematic structural view of a device of the present invention
  • Figure 2 is a structural view of the device of the present invention applied as a piston
  • Figure 3 is a structural view of the device of the present invention as a gear transmission connection
  • FIG. 4 is a schematic structural view of a weight balancing device of the device of the present invention.
  • FIG. 5 is a schematic diagram of the application of a star stepless adjustment transmission according to the present invention.
  • a torque stepless adjustment transmission device as shown in FIG. 1 and FIG. 2, the device comprises a crank 2 driven by a power shaft 1, the crank may be a disc or a rectangular structure, and the preferred embodiment is a disc. That is, the power shaft 1 drives the disk crank to rotate; the drive crank 3 is provided with a drive connector 3 (ie, a slide block), and the drive linker is connected to push one or more drive arms 4, and the drive arm drives the power device; Wherein, a stepless adjustment mechanism 5 is disposed on the crank, the drive connector is connected to the stepless adjustment mechanism, and a stepless adjustment controller (not shown) controls the stepless adjustment mechanism.
  • the driving principle of the drive connector is like the driving principle of the steam locomotive, and the drive connector 3 follows the crank 2 Doing circular motion, with the crank 2 connected by the universal connector 301 to drive the driving arm for linear reciprocating motion Force equipment to do work.
  • a stepless adjustment mechanism there are various ways, for example, hydraulic or pneumatic transmission, and the piston cylinder is used to drive the linker to move.
  • the piston cylinder is arranged on the crank, the piston arm of the piston cylinder is connected to the drive linker, and the hydraulic or pneumatic input and output lines are led out through the power shaft.
  • the rotary slide lead-out interface needs to be provided on the power shaft.
  • a screw drive is taken as a preferred embodiment.
  • the stepless adjustment mechanism includes a screw 501 and a screw rotation drive 502.
  • the screw is fixed to the crank through a bearing and a bracket, and the screw axis Arranging perpendicularly to the axis of the power shaft, the drive connector is provided with a screw sleeve, and the drive connector is connected to the screw mesh through the screw sleeve, and the screw rotation drives the drive connector to reciprocate along the screw axis;
  • the axis is perpendicularly intersected with the axis of the power shaft. Therefore, the structure can realize that the torque can be adjusted from 0 torque, that is, when the drive connector is in the power shaft axis position, the output torque is 0, and the drive arm is not mobile.
  • the screw rotation drive is a servo motor or a DC motor
  • the power supply and signal of the servo motor or the DC motor are connected to the stepless adjustment controller through an electrical contact slip ring disposed on the power shaft.
  • the stepless adjustment controller is a processor or a manually adjusted control switch.
  • the control switch is a hydraulic or pneumatic switch; when it is a servo motor or a DC motor, the control switch is Circuit switch.
  • the power device is a hydraulic pump or a gas pump
  • the drive arm is a piston arm of the hydraulic pump 6 or a cylinder piston arm of the air pump 7.
  • the drive connector pushes the hydraulic pump or the air pump to work. For example, when the centrifugal distance of the drive connector is 0, When the centrifugal distance of the drive connector is 1, the stroke of the hydraulic cylinder or the pneumatic cylinder reaches 2, and the hydraulic oil or gas of 2 stroke distance is started to output. At this time, the hydraulic pressure or the gas pressure tends to be the maximum, and the amount tends to be the smallest.
  • the power device is a gear transmission
  • the drive arm is provided with a rack 401
  • the gear transmission has a transmission shaft 8
  • the transmission shaft is provided with an overrunning clutch 9 (Like the ratchet transmission mechanism)
  • the overrunning clutch is coupled to a transmission gear 10 that meshes with a rack on the drive arm
  • the drive link pushes the drive arm to reciprocate linear motion
  • the reciprocating linear motion drive arm
  • the gear belt drives the transmission gear to rotate forward and backward
  • the transmission gear drives the transmission shaft to rotate in one direction through the overrunning clutch.
  • the screw is on the crank.
  • Side with power shaft The center symmetry is respectively provided with a rotating balance block 11, and the two balance blocks are in the shape of a fan. Of course, other shapes may be provided as needed, and the weights are uniform.
  • the balance block is rotatably adjusted on the crank by a rotating shaft. That is, the distance from the center of gravity of the balance block to the center of the power shaft can be adjusted, and the adjustment is made as the distance between the drive connector and the power shaft center is changed; in order to achieve this, the balance block can be independently set.
  • the control connection mechanism controls the connection mechanism to adjust the distance between the center of gravity of the balance block and the center of the power shaft by driving the motor control shaft.
  • the adjustment of the balance block is adjusted according to the distance of the drive link from the center of the power shaft, because the crank is more likely to generate vibration instability because the distance is large.
  • the drive linker An elongated rack 12 is disposed on each side of the screw, and a circular arc gear 1101 is disposed around the balance block rotating shaft on the balance block, and the elongated rack and the circular arc gear mesh with each other to drive
  • the linker moves, and the long strip-shaped rack drives the circular-shaped gear to rotate to adjust the distance between the center of gravity of the balance weight and the axis of the power shaft.
  • the rotation torque is small, the distance between the center of gravity of the balance weight and the axis of the power shaft is large, and the rotational torque is large and balanced.
  • the distance between the center of gravity of the block and the axis of the power shaft is small; thus, the adjustment of the crank rotation balance is realized.
  • the power shaft is an engine output shaft or a power motor output shaft.
  • the stepless adjustment controller when the stepless adjustment controller is controlled by the processor, the stepless adjustment controller may connect a plurality of sensors, which are respectively measuring a power sensor and a speed sensor of the power device and a vibration reflecting the crank vibration.
  • the sensor adjusts the optimal adjustment data according to the sensor data to control the drive linker to be in an optimal working state.
  • the continuously variable transmission pump (hydraulic pump) driven by the device drives the hydraulic motor to drive the automobile or the traveling device to achieve the purpose of stepless speed change, and solves the problem that the ordinary continuously variable transmission is limited by the torque limit without the 0-speed shift.
  • Figure 5 illustrates a star connection application structure for a multi-drive arm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

一种扭距无级调节传动装置，包括由动力轴（1）带动旋转的曲柄（2），曲柄（2）上设置有一个驱动连接器（3），驱动连接器（3）连接推动一个或多个驱动臂（4），驱动臂（4）驱动动力设备；在所述曲柄（2）上设置有一个无级调整机构（5），所述驱动连接器（3）与所述无级调整机构（5）连接，一个无级调节控制器控制所述无级调整机构（5）调整驱动连接器（3）在曲柄（2）上偏离动力轴（1）轴心的距离，进而实现驱动连接器（3）在曲柄（2）上的旋转扭距无级调节。该装置结构简单，可以实现无级变速，或者说无级变距，不需要离合器、液力变矩器等动力传递切断装置；加速过程无顿挫，加速过程快。

Description

一种扭距无级调节传动装置 技术领域
本发明属于机械传动系统，特别涉及一种扭距无级调节传动装置。
背景技术
目前无级变速在传动系统中的应用越来越普及，例如空压机以及汽车的变速器，其结构方式也有多种形式，但随着技术的进步，追求更好更加有效以及结构简单易于实现的结构方式来实现无级变速是人们不断研究的目标。
发明内容
本发明的目的是提出一种扭距无级调节传动装置，通过在一个旋转曲柄上设置无级调整机构，无级调整机构调整一个驱动连接器与动力轴轴心的距离，进而实现在曲柄上的驱动连接器旋转扭距无级调节。
为了实现上述目的，本发明的技术方案是：
一种扭距无级调节传动装置，包括由动力轴带动旋转的曲柄，曲柄上设置有一个驱动连接器，驱动链接器连接推动一个或多个驱动臂，驱动臂驱动动力设备；其中，在所述曲柄上设置有一个无级调整机构，所述驱动连接器与所述无级调整机构连接，一个无级调节控制器控制所述无级调整机构调整驱动连接器在曲柄上偏离动力轴轴心的距离，进而实现驱动连接器在曲柄上的旋转扭距无级调节。
方案进一步是：所述无级调整机构包括螺杆和螺杆转动驱动器，所述螺杆轴线与动力轴的轴线垂直相交设置，所述驱动连接器通过螺杆套与螺杆啮合连接，螺杆旋转带动驱动连接器沿所述螺杆轴线往复移动。
方案进一步是：所述螺杆转动驱动器是伺服电机或直流电机，伺服电机或直流电机的电源通过在动力轴上设置的电接触滑环引出连接无级调节控制器。
方案进一步是：所述无级调节控制器是一个可调节的控制开关。
方案进一步是：所述动力设备是液压泵或气泵，所述驱动臂是液压泵的活塞臂或者是气泵的气缸活塞臂。
方案进一步是：所述动力设备是齿轮传动装置，所述驱动臂上设置有齿条，所述齿轮传动装置中有传动轴，传动轴上设置有一个超越离合器，在超越离合器与一个传动齿轮连接，传动齿轮与所述驱动臂上的齿条相啮合，所述驱动链接器推动驱动臂做往复直线运动，往复直线运动的驱动臂通过齿条带动传动齿轮做正反转动，传动齿轮通过超越离合器带动传动轴做一个方向的转动。
方案进一步是：所述曲柄上在所述螺杆两侧以动力轴为中心对称设置有转动平衡块。
方案进一步是：所述平衡块通过转轴可转动调节的设置在所述曲柄上。
方案进一步是：所述驱动链接器在所述螺杆两侧分别设置有长条形齿条，在所述平衡块上环绕所述平衡块转轴设置有圆弧形齿轮，长条形齿条和圆弧形齿轮相互啮合，驱动链接器移动，长条形齿条带动圆弧形齿轮转动调整平衡块重心与动力轴轴心的距离，旋转扭距大、平衡块重心与动力轴轴心的距离大，旋转扭距小、平衡块重心与动力轴轴心的距离小；进而实现曲柄旋转平衡的调节。
方案进一步是：所述动力轴是发动机输出轴或者是动力电机输出轴。
本发明的有益效果是：结构简单调节方便其优点是：
1,可以实现无级变速或者说无级变距；
2,可以实现0级变速,不需要离合器、液力变矩器等动力传递切断装置；
3,无扭力限制,发动机或者电机可以最大转速启动；
4,加速过程无顿挫,加速过程可以在1-3秒内实现。
下面结合附图和实施例对发明作一详细描述。
附图说明
图1为本发明装置结构示意图；
图2为本发明装置作为活塞应用的一种结构方式；
图3为本发明装置作为齿轮传动连接的一种结构方式；
图4为本发明装置平衡块结构示意图；
图5为本发明一种星形无级调节传动的应用示意图。
具体实施方式
一种扭距无级调节传动装置，如图1和图2所示，所述装置包括由动力轴1带动旋转的曲柄2，曲柄可以是圆盘或者矩形结构，本实施例的优选是圆盘，也就是动力轴1带动圆盘曲柄转动；在圆盘曲柄上设置有一个驱动连接器3(即一个滑动块)，驱动链接器连接推动一个或多个驱动臂4，驱动臂驱动动力设备；其中，在所述曲柄上设置有一个无级调整机构5，所述驱动连接器与所述无级调整机构连接，一个无级调节控制器(图中未示出)控制所述无级调整机构调整驱动连接器在曲柄上偏离动力轴轴心的距离，进而实现驱动连接器在曲柄上的旋转扭距无级调节，驱动连接器动作原理如同蒸汽机车的驱动原理，驱动连接器3随曲柄2做圆周运动，随曲柄2由万向连接器301连接带动驱动臂作直线往复运动驱动动 力设备做功。
作为无级调整机构有多种方式，例如可以是液压或气压传动方式，利用活塞缸推动驱动链接器移动。活塞缸设置在曲柄上，活塞缸的活塞臂连接驱动链接器，液压或气压的输入输出管路通过动力轴引出，当然在动力轴上需要设置旋转滑动引出接口。
本实施例中，将螺杆传动作为一个优选方案，如图1所示，所述无级调整机构包括螺杆501和螺杆转动驱动器502，螺杆通过轴承和支架固定在曲柄上，并且，所述螺杆轴线与动力轴的轴线垂直相交设置，所述驱动连接器上设置有螺杆套，驱动连接器通过螺杆套与螺杆啮合相连接，螺杆旋转带动驱动连接器沿所述螺杆轴线往复移动；由于所述螺杆轴线与动力轴的轴线垂直相交设置，因此，此种结构可以实现扭距可以从0扭距调起，也就是当驱动连接器处于动力轴轴线位置时，其输出扭距为0，驱动臂不移动。
实施例中：所述螺杆转动驱动器是伺服电机或直流电机，伺服电机或直流电机的电源和信号通过在动力轴上设置的电接触滑环引出连接无级调节控制器。
其中：所述无级调节控制器是一个由处理器或人工调节的控制开关，当是液压或气压传动方式时，控制开关就是液压或气动开关；当是伺服电机或直流电机时，控制开关就是电路开关。
所述装置的应用至少有两种方式：
第一种，如图2所示：所述动力设备是液压泵或气泵，所述驱动臂就是液压泵6的活塞臂或者是气泵7的气缸活塞臂。通过调整驱动连接器离心距离,可以从0开始到设定的极限,对活塞臂实现精度控制,驱动连接器推动液压泵或气泵做功，例如：当驱动连接器的离心距离是0的时候,不做功,驱动连接器的离心距离是1的时候,液压缸或气压缸行程达到2,开始输出2个行程距离的液压油或气,此时液压力或气压力趋向于最大,量趋向于最小,以此类推,当驱动连接器离心距离达到设定的最大值时,比如是5,则液压缸或气缸输出10个行程距离的液压油或气,并且此时液压油的压力趋向于最小,液压油量则最大。
第二种：如图3所示，所述动力设备是齿轮传动装置，所述驱动臂上设置有齿条401，所述齿轮传动装置中有传动轴8，传动轴上设置有一个超越离合器9(如同棘轮传动机构)，在超越离合器与一个传动齿轮10连接，传动齿轮与所述驱动臂上的齿条相啮合，所述驱动链接器推动驱动臂做往复直线运动，往复直线运动的驱动臂通过齿条带动传动齿轮做正反转动，传动齿轮通过超越离合器带动传动轴做一个方向的转动。
由于驱动连接器以及无级调整机构会在曲柄转动时出现重心偏移造成转动不平稳，为了在曲柄转动时做到平衡，因此：如图4所示，在所述曲柄上在所述螺杆两侧以动力轴为 中心对称分别设置有转动平衡块11，两个平衡块的形状为扇形，当然根据需要可以有其他的形状，重量一致。其中：所述平衡块通过转轴可转动调节的设置在所述曲柄上。也就是平衡块的重心距离动力轴中心的距离可以调整，并且这种调整是随着驱动连接器与动力轴中心距离的变化而进行的调整；为了实现这一目的，可以独立设置所述平衡块的控制连接机构，控制连接机构通过驱动电机控制转轴调节平衡块的重心距离动力轴中心的距离。但平衡块的调节是根据驱动链接器距离动力轴中心的距离来进行调节的，因为距离大则曲柄更容易产生振动不稳定，因此，作为一个优选方案：本实施例中：所述驱动链接器在所述螺杆两侧分别设置有长条形齿条12，在所述平衡块上环绕所述平衡块转轴设置有圆弧形齿轮1101，长条形齿条和圆弧形齿轮相互啮合，驱动链接器移动，长条形齿条带动圆弧形齿轮转动调整平衡块重心与动力轴轴心的距离，旋转扭距小、平衡块重心与动力轴轴心的距离大，旋转扭距大、平衡块重心与动力轴轴心的距离小；进而实现曲柄旋转平衡的调节。
实施例中：所述动力轴是发动机输出轴或者是动力电机输出轴。
在本实施例中，当所述无级调节控制器用处理器进行控制时，所述无级调节控制器可以连接多个传感器，分别是测量动力设备的功率传感器和速度传感器以及反映曲柄震动的振动传感器，根据传感器的数据调整最佳的调整数据控制驱动链接器处于一个最佳的工作状态。
通过本装置驱动的无级变速泵(液压泵)推动液压马达驱动汽车或者行走装置可以达到无级变速的目的,解决普通无级变速器受扭力限制没有0级变速的问题。图5示意的是一种多驱动臂的星形连接应用结构。

Claims (10)

  1. 一种扭距无级调节传动装置，包括由动力轴带动旋转的曲柄，曲柄上设置有一个驱动连接器，驱动链接器连接推动一个或多个驱动臂，驱动臂驱动动力设备；其特征在于，在所述曲柄上设置有一个无级调整机构，所述驱动连接器与所述无级调整机构连接，一个无级调节控制器控制所述无级调整机构调整驱动连接器在曲柄上偏离动力轴轴心的距离，进而实现驱动连接器在曲柄上的旋转扭距无级调节。
  2. 根据权利要求1所述的扭距无级调节传动装置，其特征在于，所述无级调整机构包括螺杆和螺杆转动驱动器，所述螺杆轴线与动力轴的轴线垂直相交设置，所述驱动连接器通过螺杆套与螺杆啮合连接，螺杆旋转带动驱动连接器沿所述螺杆轴线往复移动。
  3. 根据权利要求2所述的扭距无级调节传动装置，其特征在于，所述螺杆转动驱动器是伺服电机或直流电机，伺服电机或直流电机的电源通过在动力轴上设置的电接触滑环引出连接无级调节控制器。
  4. 根据权利要求1或2或3所述的扭距无级调节传动装置，其特征在于，所述无级调节控制器是一个可调节的控制开关。
  5. 根据权利要求1所述的扭距无级调节传动装置，其特征在于，所述动力设备是液压泵或气泵，所述驱动臂是液压泵的活塞臂或者是气泵的气缸活塞臂。
  6. 根据权利要求1所述的扭距无级调节传动装置，其特征在于，所述动力设备是齿轮传动装置，所述驱动臂上设置有齿条，所述齿轮传动装置中有传动轴，传动轴上设置有一个超越离合器，在超越离合器与一个传动齿轮连接，传动齿轮与所述驱动臂上的齿条相啮合，所述驱动链接器推动驱动臂做往复直线运动，往复直线运动的驱动臂通过齿条带动传动齿轮做正反转动，传动齿轮通过超越离合器带动传动轴做一个方向的转动。
  7. 根据权利要求2所述的扭距无级调节传动装置，其特征在于，所述曲柄上在所述螺杆两侧以动力轴为中心对称设置有转动平衡块。
  8. 根据权利要求7所述的扭距无级调节传动装置，其特征在于，所述平衡块通过转轴可转动调节的设置在所述曲柄上。
  9. 根据权利要求8所述的扭距无级调节传动装置，其特征在于，所述驱动链接器在所述螺杆两侧分别设置有长条形齿条，在所述平衡块上环绕所述平衡块转轴 设置有圆弧形齿轮，长条形齿条和圆弧形齿轮相互啮合，驱动链接器移动，长条形齿条带动圆弧形齿轮转动调整平衡块重心与动力轴轴心的距离，旋转扭距小、平衡块重心与动力轴轴心的距离大，旋转扭距大、平衡块重心与动力轴轴心的距离小；进而实现曲柄旋转平衡的调节。
  10. 根据权利要求1-9任一所述的扭距无级调节传动装置，其特征在于，所述动力轴是发动机输出轴或者是动力电机输出轴。
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US4249424A (en) * 1977-11-23 1981-02-10 Glazier William J Variable throw eccentric
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CN1804432A (zh) * 2006-01-18 2006-07-19 崔宝林 动量矩机械无级变扭器
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