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WO2017107051A1 - 一种防逆转机构 - Google Patents

一种防逆转机构 Download PDF

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Publication number
WO2017107051A1
WO2017107051A1 PCT/CN2015/098237 CN2015098237W WO2017107051A1 WO 2017107051 A1 WO2017107051 A1 WO 2017107051A1 CN 2015098237 W CN2015098237 W CN 2015098237W WO 2017107051 A1 WO2017107051 A1 WO 2017107051A1
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WO
WIPO (PCT)
Prior art keywords
flange
driven
pawl
shaft
driven flange
Prior art date
Application number
PCT/CN2015/098237
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English (en)
French (fr)
Inventor
吴平
Original Assignee
吴平
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Publication date
Application filed by 吴平 filed Critical 吴平
Priority to PCT/CN2015/098237 priority Critical patent/WO2017107051A1/zh
Publication of WO2017107051A1 publication Critical patent/WO2017107051A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/07—Means for converting reciprocating motion into rotary motion or vice versa using pawls and ratchet wheels

Definitions

  • the present invention relates to a rotating mechanism, and more particularly to an anti-reverse mechanism for rotating a mechanical device.
  • the motor with anti-reverse characteristics can be widely used in various industries such as food, chemical, mining, machinery, etc., as a power source with directional driving requirements, especially in the electric drum with the material conveying system of climbing, the promotion effect is obvious.
  • the traditional anti-reverse motor has some defects: poor reliability, the conventional anti-reverse device is installed in the right flange shaft of the drum, and the anti-reverse device installed in the right flange shaft of the electric drum is difficult to maintain due to the installation position. The drum must be disassembled before it can be repaired. In addition, when the adjustment is required in the reverse direction, it is generally returned to the factory for processing.
  • the object of the present invention is to provide an anti-reverse mechanism, which can ensure the anti-reverse effect, improve the reliability and stability of the drum operation, and has a simple structure and convenient maintenance.
  • an anti-reverse mechanism including an active flange that is coupled to the outer circumference of the drive shaft, a driven shaft is coaxially disposed adjacent to the drive shaft, and a peripheral drive connection of the driven shaft is driven.
  • a flange, the driving flange and the driven flange are connected by a pin shaft, and a side of the driven flange away from the active flange is mounted with a pawl, and one end of the pawl is hinged to the driven flange
  • the outer periphery of the driven shaft is further provided with a locking disc, and the outer circumference of the locking disc is provided with a mounting hole, and the inner circumference of the locking disc is close to the side of the driven flange, and the pawl for locking against the reverse rotation is processed. ratchet.
  • the locking disc When the invention is installed, the locking disc is fixed on the drum shell, and the driven shaft is connected with the drum rotor.
  • the driving shaft rotates through the active flange and the driven flange to drive the driven shaft to rotate.
  • the positively rotating driven flange causes the pawl to generate centrifugal force, so that the pawl is disengaged from the ratchet, so that the rotor can rotate normally, when driven
  • the flange stops rotating the pawl is buckled on the ratchet under the force of gravity.
  • the present invention has the beneficial effects that the present invention forms a self-locking anti-reverse mechanism by using a combination of a pawl and a ratchet, and cooperates with centrifugal action, and has the advantages of simple structure, low cost, and maintenance. Convenient and anti-reverse effect, improve the stability and reliability of the drum operation.
  • the invention can be used in a motorized drum.
  • the tooth direction of the ratchet is the same as the positive direction of the driven flange, and the pawl is disengaged from the ratchet under the centrifugal action when the driven flange rotates in the forward direction, and the pawl is at the time when the driven flange stops rotating.
  • the buckle is buckled on the ratchet under gravity.
  • the tooth direction is the same as the driven flange, which ensures that the pawl can slide along the teeth of the ratchet under the condition of insufficient centrifugal force, and does not affect the power transmission of the motor at low speed.
  • one end of the pawl is pulled out to affect its normal operation, and the outer periphery of the driven flange is processed with a limiting edge for protecting the pawl.
  • the stability and reliability of the work of the present invention are guaranteed.
  • the pawl is mounted on the driven flange via a locking screw, the end of the locking screw being screwed onto the driven flange, the pawl being rotatable
  • the sleeve is sleeved on the locking screw, and the locking screw segment between the pawl and the driven flange is further sleeved with a torsion spring, and the driven flange and the pawl are provided with a limiting post that cooperates with the torsion spring.
  • the elastic force of the torsion spring is smaller than the centrifugal force when the driven flange rotates.
  • the pin is threaded on the active flange, and both ends are extended by the active flange, and the driven flange is processed and described a pin-fitted transmission hole, the shaft shaft extending into one end of the transmission hole is circumferentially processed with an annular groove, the annular groove is sleeved with a rubber ring, and the other end of the pin is threadedly connected with the lock nut .
  • the locking disc and the ratchet are both formed into a round shape, the central angle of the locking disc is 180-210, and the central angle of the ratchet is 180-240.
  • the rounded structure also saves material and reduces costs.
  • the pawls are provided with six and evenly distributed on the driven flange, and the number of teeth on the ratchet is also six. The six pawls further ensure reliability when locked.
  • the cross section of the active flange and the driven flange are both L-shaped, the active flange and the drive shaft There is a key connection between the driven flange and the driven shaft.
  • the contact area is larger and the transmission is more reliable.
  • the driven flange includes a mounting portion that is sleeved on the driven shaft and a transmission portion that is drivingly coupled to the active flange, and the locking disk is sleeved on the mounting portion.
  • the ratchet is disposed inside the pawl.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1.
  • Figure 3 is an enlarged view of B in Figure 1.
  • 1 drive shaft 1 drive shaft, 2 keys, 3 active flanges, 4 driven flanges, 4a drive holes, 4b limit sides, 5 ratchets, 6 pawls, 7 lock discs, 7a mounting holes, 8 housings, 9 from Moving shaft, 10 lock nut, 11 pin, 12 rubber ring, 13 locking screw, 14a, 14b limit post, 15 torsion spring.
  • An anti-reverse mechanism as shown in FIG. 1-3 includes an active flange 3 that is connected to the outer circumference of the driving shaft 1.
  • a driven shaft 9 is coaxially disposed beside the driving shaft 1, and the outer peripheral driving connection of the driven shaft 9 is
  • the driven flange 4, the active flange 3 and the driven flange 4 are drivingly connected via the pin shaft 11, and the pin shaft 11 is screwed on the active flange 3, and both ends are extended by the active flange 3, and are driven.
  • the flange 4 is machined with a transmission hole 4a for engaging with the pin shaft 11.
  • the shaft portion of the pin shaft 11 extending into one end of the transmission hole 4a is circumferentially processed with an annular groove, and the annular groove is sleeved with a rubber ring 12, and the pin shaft 11 is The other end is screwed to the retracting nut 10, and the pawl 6 is mounted on the side of the driven flange 4 away from the active flange 3.
  • One end of the pawl 6 is hinged on the driven flange 4, and the driven shaft 9 is also sleeved on the outer circumference.
  • the outer periphery of the locking disc 7 is provided with a mounting hole 7a, and the inner side of the locking disc 7 is close to the side of the driven flange 4, and the ratchet 5 for locking the reversely rotating pawl 6 is processed, the locking disc 7 and The ratchets 5 are all formed into a round shape, the central angle of the locking disk 7 is 180°-210°, the central angle of the ratchet 5 is 180-240°, and the tooth direction of the ratchet 5 and the positive steering phase of the driven flange 4
  • the pawl 6 disengages from the ratchet 5 under the action of centrifugal force, and when the driven flange 4 stops rotating, the pawl 6 is buckled on the ratchet 5 by gravity, and the outer periphery of the driven flange 4
  • the limiting edge 4b of the protection pawl 6 is machined, and the pawl 6 is mounted on the driven flange
  • the matching limit columns 14a, 14b, the elastic force of the torsion spring 15 is smaller than the centrifugal force when the driven flange 4 rotates, the pawl 6 is provided with six, and is evenly distributed on the driven flange 4, the teeth of the ratchet 5
  • the number is also six, the cross-section of the active flange 3 and the driven flange 4 are both L-shaped, between the active flange 3 and the drive shaft 1, and between the driven flange 4 and the driven shaft 9 are keys.
  • the driven flange 4 includes a mounting portion sleeved on the driven shaft 9 and a transmission portion coupled to the driving flange 3, the locking disk 7 is sleeved on the mounting portion, and the ratchet 5 is disposed on the pawl 6 Inside.
  • the locking disk 7 When the invention is installed, the locking disk 7 is fixed on the drum housing 8a, and the driven shaft 9 is connected to the drum rotor.
  • the driving shaft 1 rotates through the driving flange 3 and the driven flange 4 to drive from the driving flange.
  • the moving shaft 9 rotates.
  • the driven flange 4 rotates in the forward direction, since the pawl 6 is hinged on the driven flange 4, the positively rotating driven flange 4 causes the pawl 6 to generate centrifugal force, and the centrifugal force is greater than the torsion spring.
  • the elastic force of 15 causes the pawl 6 to disengage from the ratchet wheel 5, so that the rotor can rotate normally.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

公开了转动机械装置领域内的一种防逆转机构，包括传动连接在主动轴（1）外周的主动法兰（3），主动轴（1）旁同轴设置有从动轴（9），从动轴（9）的外周传动连接有从动法兰（4），主动法兰（3）和从动法兰（4）之间经销轴（11）传动连接，从动法兰（4）远离主动法兰（3）的一侧安装有棘爪（6），棘爪（6）的一端铰接在从动法兰（4）上，从动轴（9）外周还套设有锁定盘（7），锁定盘（7）的外周开设有安装孔（7a），锁定盘（7）内周靠近从动法兰（4）的一侧加工有用以卡扣住逆向转动的棘爪（6）的棘轮（5）。本装置通过使用棘爪、棘轮的组合，并配合离心作用，形成自锁式防逆转机构，其结构简单，成本低廉，维修保养方便，防逆转效果好，提高了滚筒运行的稳定性和可靠性，可用于电动滚筒中。

Description

一种防逆转机构 技术领域
本发明涉及一种转动机械装置，特别涉及一种用于转动机械装置上的防逆转机构。
背景技术
具有防逆转特性的电机可广泛应用于食品、化工、矿山、机械等各行各业，作为有定向驱动要求的动力源，尤其在有爬坡的物料输送系统的电动滚筒，推广使用效果明显。而传统的防逆转特性的电机存在一些缺陷：可靠性差，常规的防逆转装置安装在滚筒右法兰轴内，而安装在电动滚筒右法兰轴内的防逆转装置由于安装位置原因，维修困难，必须将滚筒解体后方能进行维修，另外逆转方向需要的调整时，一般情况下都是返厂才能处理。
发明内容
本发明的目的是提供一种防逆转机构，保证防逆转效果，提高滚筒运行的可靠性和稳定性，且其结构简单，维修保养方便。
本发明的目的是这样实现的：一种防逆转机构，包括传动连接在主动轴外周的主动法兰，所述主动轴旁同轴设置有从动轴，从动轴的外周传动连接有从动法兰，所述主动法兰和从动法兰之间经销轴传动连接，所述从动法兰远离主动法兰的一侧安装有棘爪，所述棘爪的一端铰接在从动法兰上，所述从动轴外周还套设有锁定盘，所述锁定盘的外周开设有安装孔，锁定盘内周靠近从动法兰的一侧加工有用以卡扣住逆向转动的棘爪的棘轮。
本发明安装时，将锁定盘固定在滚筒壳体上，将从动轴与滚筒转子传动连接，本发明工作时，主动轴转动通过主动法兰、从动法兰带动从动轴转动，当从动法兰正向转动时，由于棘爪铰接在从动法兰上，正向转动的从动法兰使得棘爪产生离心力，从而使得棘爪脱离开棘轮，使得转子可正常转动，当从动法兰停止转动时，棘爪在重力作用下搭扣在棘轮上，若转子发生逆转时，棘爪恰好被棘轮卡扣住，从而防止了转子逆转的发生。与现有技术相比，本发明的有益效果在于，本发明通过使用棘爪、棘轮的组合，并配合离心作用，使得本发明形成自锁式防逆转机构，其结构简单，成本低廉，维修保养方便，防逆转效果好，提高了滚筒运行的稳定性和可靠性。本发明可用于电动滚筒中。
作为本发明的进一步限定，所述棘轮的齿向与从动法兰的正转向相同，从动法兰正向转动时棘爪在离心作用下脱离棘轮，从动法兰停止转动时棘爪在重力作用下卡扣在棘轮上。齿向与从动法兰正转向相同，保证了在离心力不足的情况下棘爪也可顺着棘轮的齿滑动，并不会影响电机在低转速时动力的传输。
为了避免离心力过大时，棘爪一端甩出从而影响其正常工作，所述从动法兰的外周加工有保护棘爪的限位边。保证了本发明工作的稳定性和可靠性。
为了保证棘爪在停止转动时锁定更加可靠，所述棘爪经锁紧螺钉安装在从动法兰上，所述锁紧螺钉的端部螺纹连接在从动法兰上，棘爪可转动的套设在锁紧螺钉上，棘爪与从动法兰之间锁紧螺钉段还套设有扭簧，所述从动法兰和棘爪上设置与所述扭簧配合的限位柱，所述扭簧的弹性力小于从动法兰转动时的离心力。从动法兰停止转动时，棘爪在扭簧的弹性作用下，可稳定的卡扣在棘轮上，进一步保证了防逆转的效果。
为了保证主动法兰和从动法兰传动的可靠性，所述销轴螺纹连接在主动法兰上，且两端均伸出主动法兰设置，所述从动法兰上加工有与所述销轴配合的传动孔，所述销轴伸入到传动孔一端的轴段周向加工有环形槽，所述环形槽内套设有橡胶圈，所述销轴的另一端螺纹连接锁紧螺母。
为了使得对壳体内轴承加油更加方便，所述锁定盘和棘轮均加工成圆缺形，所述锁定盘的圆心角为180°-210°，棘轮的圆心角为180-240°。圆缺形结构还节约了材料，降低了成本。
为了保证棘爪棘轮锁定的可靠性，所述棘爪设置有六个，且均匀分布在从动法兰上，所述棘轮上齿的数量也为六个。六个棘爪进一步保证了锁定时的可靠性。
为了使得主动轴与主动法兰之间、从动轴与从动法兰之间传动的可靠性，所述主动法兰和从动法兰的横截面均为L形，主动法兰与主动轴之间、从动法兰与从动轴之间均为键连接。其接触面积更大，传动更加可靠。
为了使得本发明结构更加紧凑、装配更加方便，所述从动法兰包括套设在从动轴上的安装部以及与主动法兰传动连接的传动部，所述锁定盘套设在安装部上，所述棘轮设置在棘爪的内侧。
附图说明
图1为本发明结构示意图。
图2为沿图1中A-A向剖视图。
图3为图1中B处放大图。
其中，1主动轴，2键，3主动法兰，4从动法兰，4a传动孔，4b限位边，5棘轮，6棘爪，7锁定盘，7a安装孔，8壳体，9从动轴，10锁紧螺母，11销轴，12橡胶圈，13锁紧螺钉，14a、14b限位柱，15扭簧。
具体实施方式
如图1-3所示的一种防逆转机构，包括传动连接在主动轴1外周的主动法兰3，主动轴1旁同轴设置有从动轴9，从动轴9的外周传动连接有从动法兰4，主动法兰3和从动法兰4之间经销轴11传动连接，销轴11螺纹连接在主动法兰3上，且两端均伸出主动法兰3设置，从动法兰4上加工有与销轴11配合的传动孔4a，销轴11伸入到传动孔4a一端的轴段周向加工有环形槽，环形槽内套设有橡胶圈12，销轴11的另一端螺纹连接缩进螺母10，从动法兰4远离主动法兰3的一侧安装有棘爪6，棘爪6的一端铰接在从动法兰4上，从动轴9外周还套设有锁定盘7，锁定盘7的外周开设有安装孔7a，锁定盘7内周靠近从动法兰4的一侧加工有用以卡扣住逆向转动的棘爪6的棘轮5，锁定盘7和棘轮5均加工成圆缺形，锁定盘7的圆心角为180°-210°，棘轮5的圆心角为180-240°，棘轮5的齿向与从动法兰4的正转向相同，从动法兰4正向转动时棘爪6在离心作用下脱离棘轮5，从动法兰4停止转动时棘爪6在重力作用下卡扣在棘轮5上，从动法兰4的外周加工有保护棘爪6的限位边4b，棘爪6经缩进螺钉13安装在从动法兰4上，缩进螺钉13的端部螺纹连接在从动法兰4上，棘爪6可转动的套设在缩进螺钉13上，棘爪6与从动法兰4之间缩进螺钉13段还套设有扭簧15，从动法兰4和棘爪6上设置与扭簧15配合的限位柱14a、14b，扭簧15的弹性力小于从动法兰4转动时的离心力，棘爪6设置有六个，且均匀分布在从动法兰4上，棘轮5上齿的数量也为六个，主动法兰3和从动法兰4的横截面均为L形，主动法兰3与主动轴1之间、从动法兰4与从动轴9之间均为键2连接，从动法兰4包括套设在从动轴9上的安装部以及与主动法兰3传动连接的传动部，锁定盘7套设在安装部上，棘轮5设置在棘爪6的内侧。
本发明安装时，将锁定盘7固定在滚筒壳体8a上，将从动轴9与滚筒转子传动连接，本发明工作时，主动轴1转动通过主动法兰3、从动法兰4带动从动轴9转动，当从动法兰4正向转动时，由于棘爪6铰接在从动法兰4上，正向转动的从动法兰4使得棘爪6产生离心力，且离心力大于扭簧15的弹性力，从而使得棘爪6脱离开棘轮5，使得转子可正常转动，当从动法兰4停止转动时，棘爪6在扭簧15的弹性力作用下搭扣在棘轮5上，若转子发生逆转时，棘爪6恰好被棘轮5卡扣住，从而防止了转子逆转的发生。
本发明并不局限于上述实施例，在本发明公开的技术方案的基础上，本领域的技术人员根据所公开的技术内容，不需要创造性的劳动就可以对其中的一些技术特征作出一些替换和变形，这些替换和变形均在本发明的保护范围内。

Claims (9)

  1. 一种防逆转机构，包括传动连接在主动轴外周的主动法兰，其特征在于，所述主动轴旁同轴设置有从动轴，从动轴的外周传动连接有从动法兰，所述主动法兰和从动法兰之间经销轴传动连接，所述从动法兰远离主动法兰的一侧安装有棘爪，所述棘爪的一端铰接在从动法兰上，所述从动轴外周还套设有锁定盘，所述锁定盘的外周开设有安装孔，锁定盘内周靠近从动法兰的一侧加工有用以卡扣住逆向转动的棘爪的棘轮。
  2. 根据权利要求1所述的一种防逆转机构，其特征在于，所述棘轮的齿向与从动法兰的正转向相同，从动法兰正向转动时棘爪在离心作用下脱离棘轮，从动法兰停止转动时棘爪在重力作用下卡扣在棘轮上。
  3. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述从动法兰的外周加工有保护棘爪的限位边。
  4. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述棘爪经锁紧螺钉安装在从动法兰上，所述锁紧螺钉的端部螺纹连接在从动法兰上，棘爪可转动的套设在锁紧螺钉上，棘爪与从动法兰之间锁紧螺钉段还套设有扭簧，所述从动法兰和棘爪上设置与所述扭簧配合的限位柱，所述扭簧的弹性力小于从动法兰转动时的离心力。
  5. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述销轴螺纹连接在主动法兰上，且两端均伸出主动法兰设置，所述从动法兰上加工有与所述销轴配合的传动孔，所述销轴伸入到传动孔一端的轴段周向加工有环形槽，所述环形槽内套设有橡胶圈，所述销轴的另一端螺纹连接锁紧螺母。
  6. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述锁定盘和棘轮均加工成圆缺形，所述锁定盘的圆心角为180°-210°，棘轮的圆心角为180-240°。
  7. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述棘爪设置有六个，且均匀分布在从动法兰上，所述棘轮上齿的数量也为六个。
  8. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述主动法兰和从动法兰的横截面均为L形，主动法兰与主动轴之间、从动法兰与从动轴之间均为键连接。
  9. 根据权利要求1或2所述的一种防逆转机构，其特征在于，所述从动法兰包括套设在从动轴上的安装部以及与主动法兰传动连接的传动部，所述锁定盘套设在安装部上，所述棘轮设置在棘爪的内侧。
PCT/CN2015/098237 2015-12-22 2015-12-22 一种防逆转机构 WO2017107051A1 (zh)

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CN200996074Y (zh) * 2007-01-17 2007-12-26 李钟平 纺织纤维成卷机棉卷加速超越离合装置
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CN2319598Y (zh) * 1997-05-30 1999-05-19 山东巨力(集团)股份有限公司 小型柴油机起动器
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WO2023144133A1 (en) * 2022-01-28 2023-08-03 Dacs A/S A ventilation fan with anti-reversal device

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