WO2016004824A1 - Brake mechanism - Google Patents

Brake mechanism Download PDF

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Publication number
WO2016004824A1
WO2016004824A1 PCT/CN2015/082463 CN2015082463W WO2016004824A1 WO 2016004824 A1 WO2016004824 A1 WO 2016004824A1 CN 2015082463 W CN2015082463 W CN 2015082463W WO 2016004824 A1 WO2016004824 A1 WO 2016004824A1
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WO
WIPO (PCT)
Prior art keywords
pulley
friction
brake
brake block
motor
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PCT/CN2015/082463
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French (fr)
Chinese (zh)
Inventor
张进
Original Assignee
嘉兴亚特园林机械研究所
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Publication date
Priority to CN201410328428.9 priority Critical
Priority to CN201410328428.9A priority patent/CN104141712A/en
Application filed by 嘉兴亚特园林机械研究所 filed Critical 嘉兴亚特园林机械研究所
Publication of WO2016004824A1 publication Critical patent/WO2016004824A1/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/76Driving mechanisms for the cutters
    • A01D34/78Driving mechanisms for the cutters electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00Self-acting brakes, e.g. coming into operation at a predetermined speed

Abstract

A brake mechanism comprises a belt wheel shaft (1), a large belt wheel (2) and a bracket (3) with a motor (9). The large belt wheel (2) is rotatably connected to the bracket (3) through the belt wheel shaft (1) and is axially fixed, and the large belt wheel (2) is linked with the output end of the motor (9). A brake block (4) and a spring (5) are arranged on the large belt wheel (2). A friction member (6) is arranged on the bracket (3). The brake block (4) is movably connected to the large belt wheel (2) and is capable of moving between separated or contact positions with the friction member (6). The distance between the part, in contact with the friction member (6), of the brake block (4) and the axis (1) of the large belt wheel (2) is greater than that between the part, in contact with the brake block (4), of the friction member (6) and the axis (1) of the large belt wheel (2). The spring (5) produces elastic force for enabling the brake block (4) to get close to the friction member (6). The brake mechanism is controlled by using the centrifugal force, the rotation speed of the motor (9) is stable, the downtime reduction time is stable, the brake force is produced by the brake block (4) after the motor (9) is stopped and the time required by the brake tool is stable, so that the brake process is stable.

Description

一种刹车机构Brake mechanism 技术领域Technical field
本发明涉及园林工具领域,特别是一种刹车机构。The invention relates to the field of garden tools, in particular to a brake mechanism.
背景技术Background technique
由于安规刹车时间的要求,现有技术中由电机驱动的割草机、旋耕机或相关园林工具中用于制动的机械刹车结构不够稳定,刹车时间波动性较大的弊端,不能满足其要求。Due to the requirement of safety brake time, the mechanical brake structure used for braking in the mower, rotary tiller or related garden tools driven by the motor in the prior art is not stable enough, and the drawback of the brake time fluctuation is large, which cannot be satisfied. Its requirements.
发明内容Summary of the invention
本发明所要达到的目的是提供一种刹车机构,能够平稳制动。The object to be achieved by the present invention is to provide a brake mechanism that can be smoothly braked.
为了达到上述目的,本发明采用如下技术方案:一种刹车机构,包括带轮轴、大带轮和装有电机的支架,大带轮通过带轮轴转动连接在支架上且轴向固定,大带轮与电机输出端联动;大带轮上设有刹车块和弹簧,支架上设有摩擦件,刹车块与大带轮活动连接并可在与摩擦件相离或相触的位置间移动,刹车块可与摩擦件相触的部分与大带轮轴线的间距大于摩擦件可与刹车块相触的部分与大带轮轴线的距离,弹簧产生使刹车块靠近摩擦件的弹力。In order to achieve the above object, the present invention adopts the following technical solution: a brake mechanism comprising a pulley shaft, a large pulley and a bracket equipped with a motor, and the large pulley is rotatably coupled to the bracket through the pulley shaft and axially fixed, the large pulley and The output end of the motor is linked; the large pulley is provided with a brake block and a spring, and the bracket is provided with a friction member, and the brake block is movably connected with the large pulley and can move between a position that is apart from or touches the friction member, and the brake block can be The distance between the portion in contact with the friction member and the axis of the large pulley is greater than the distance between the portion of the friction member that can contact the brake block and the axis of the large pulley, and the spring generates an elastic force that brings the brake block closer to the friction member.
刹车块可与摩擦件相触的部分与大带轮轴线的间距大于摩擦件可与刹车块相触的部分与大带轮轴线的距离,由于大带轮与电机输出端联动,当电机输出端转动至工作速度时,刹车块随大带轮绕大带轮的轴线转动,受离心力的作用刹车块向远离大带轮轴线的方向活动,从而与摩擦件相离,不产生摩擦力;当电机停机失速,大带轮减速,刹车块获得的离心力不足以抵消弹簧产生的弹力,弹簧使刹车块向靠近大带轮轴线的方向活动,直至刹车块与摩擦件相触产生制动力。The distance between the portion of the brake block that can contact the friction member and the axis of the large pulley is greater than the distance between the portion of the friction member that can contact the brake block and the axis of the large pulley, because the large pulley is linked with the output end of the motor, when the motor output When rotating to the working speed, the brake block rotates along the axis of the large pulley around the large pulley, and the brake block moves away from the axis of the large pulley by the centrifugal force, so as to be separated from the friction member, no friction is generated; when the motor The stall stalls, the large pulley decelerates, the centrifugal force obtained by the brake block is insufficient to offset the spring force generated by the spring, and the spring moves the brake block toward the axis of the large pulley until the brake block contacts the friction member to generate a braking force.
进一步的,还包括小带轮、皮带,小带轮设于电机输出端并与电机输出端 同轴同步转动,所述大带轮的轴线与小带轮的轴线平行,皮带套于大带轮、小带轮外使大带轮与小带轮联动。通过皮带连接大带轮伦和小带轮,利用摩擦力传动,防止刚性传动在制动时造成部件损坏。Further, the utility model further comprises a small pulley and a belt, wherein the small pulley is arranged at the output end of the motor and is connected to the output end of the motor. The coaxial synchronous rotation, the axis of the large pulley is parallel with the axis of the small pulley, and the belt is sleeved on the large pulley and the small pulley to link the large pulley and the small pulley. The belt pulley and the small pulley are connected by a belt, and the friction transmission is used to prevent the rigid transmission from causing component damage during braking.
进一步的,所述摩擦件为圆柱体摩擦套,摩擦套与所述机架固定连接或为一体结构,摩擦套设有轴孔,带轮轴穿过摩擦套与摩擦套同轴。圆柱体摩擦套与带轮轴同轴设置时刹车块转至可及的任何位置均能与摩擦套配合产生制动力。Further, the friction member is a cylindrical friction sleeve, and the friction sleeve is fixedly connected to the frame or has an integral structure, and the friction sleeve is provided with a shaft hole, and the pulley shaft is coaxial with the friction sleeve through the friction sleeve. When the cylindrical friction sleeve is coaxial with the pulley shaft, the brake block can be rotated to any position that can be combined with the friction sleeve to generate braking force.
进一步的,所述刹车块设于所述大带轮的边缘与所述摩擦套的侧壁之间,刹车块与大带轮转动连接,且刹车块转动的轴线与大带轮的轴线平行,所述弹簧产生使刹车块转向碰触摩擦套侧壁的弹力。转动连接的刹车块活动更灵活。Further, the brake block is disposed between an edge of the large pulley and a sidewall of the friction sleeve, and the brake block is rotatably connected with the large pulley, and an axis of rotation of the brake block is parallel to an axis of the large pulley. The spring creates an elastic force that causes the brake block to turn against the sidewall of the friction sleeve. Rotating the connected brake block is more flexible.
采用上述技术方案后,本发明具有如下优点:After adopting the above technical solution, the present invention has the following advantages:
利用离心力控制刹车机构,由于电机转速稳定、停机减速时间稳定,刹车块在电机停机后产生制动力及制动工具所需的时间稳定,制动过程平稳。The centrifugal force is used to control the brake mechanism. Since the motor speed is stable and the deceleration time is stable, the brake block generates a braking force and the time required for the brake tool is stable after the motor is stopped, and the braking process is stable.
附图说明DRAWINGS
下面结合附图对本发明作进一步说明:The present invention will be further described below in conjunction with the accompanying drawings:
图1为本发明一种实施例的结构示意图;1 is a schematic structural view of an embodiment of the present invention;
图2为机架的示意图;Figure 2 is a schematic view of the rack;
图3为大带轮的示意图。Figure 3 is a schematic view of a large pulley.
具体实施方式detailed description
图1-3所示为本发明的一种实施例。Figures 1-3 illustrate an embodiment of the present invention.
一种刹车机构,包括带轮轴1、大带轮2和装有电机9的支架3,大带轮2通过带轮轴1转动连接在支架3上且轴向固定,还包括小带轮7、皮带8,小带轮7设于电机9输出端并与电机9输出端同轴同步转动,大带轮2的轴线与小 带轮7的轴线平行,皮带8套于大带轮2、小带轮7外使大带轮2与小带轮7联动,通过皮带8连接大带轮2伦和小带轮7,利用摩擦力传动,防止刚性传动在制动时造成部件损坏。支架3上设有摩擦件6,摩擦件6为圆柱体摩擦套,摩擦套与机架固定连接或为一体结构,摩擦套设有轴孔,带轮轴1穿过摩擦套与摩擦套同轴。大带轮2上设有刹车块4和弹簧5,刹车块4与大带轮2活动连接并可在与摩擦件6相离或相触的位置间移动,刹车块4设于大带轮2的边缘与摩擦套的侧壁之间,即刹车块4可与摩擦件6相触的部分与大带轮2轴1线的间距大于摩擦件6可与刹车块4相触的部分与大带轮2轴1线的距离,圆柱体摩擦套与带轮轴1同轴设置时刹车块4转至可及的任何位置均能与摩擦套配合产生制动力,刹车块4与大带轮2转动连接,且刹车块4转动的轴线与大带轮2的轴线平行,弹簧5产生使刹车块4转向碰触摩擦套侧壁的弹力。A brake mechanism includes a pulley shaft 1, a large pulley 2 and a bracket 3 equipped with a motor 9. The large pulley 2 is rotatably coupled to the bracket 3 via the pulley shaft 1 and axially fixed, and further includes a small pulley 7 and a belt 8 The small pulley 7 is disposed at the output end of the motor 9 and rotates coaxially with the output end of the motor 9, and the axis of the large pulley 2 is small. The axis of the pulley 7 is parallel, and the belt 8 is sleeved on the outside of the large pulley 2 and the small pulley 7, so that the large pulley 2 and the small pulley 7 are interlocked, and the large pulley 2 and the small pulley 7 are connected by the belt 8, and the friction is utilized. Force transmission to prevent damage to components caused by rigid transmission during braking. The bracket 3 is provided with a friction member 6 which is a cylindrical friction sleeve. The friction sleeve is fixedly connected to the frame or has an integral structure. The friction sleeve is provided with a shaft hole, and the pulley shaft 1 passes through the friction sleeve and is coaxial with the friction sleeve. The large pulley 2 is provided with a brake block 4 and a spring 5, and the brake block 4 is movably connected to the large pulley 2 and movable between a position that is apart from or in contact with the friction member 6, and the brake block 4 is disposed on the large pulley 2 Between the edge and the side wall of the friction sleeve, that is, the portion of the brake block 4 that can contact the friction member 6 and the shaft 1 of the large pulley 2 are larger than the portion of the friction member 6 that can contact the brake block 4 and the belt The distance between the two axes of the wheel 2, when the cylindrical friction sleeve and the pulley shaft 1 are coaxially arranged, the brake block 4 can be rotated to any position that can be combined with the friction sleeve to generate a braking force, and the brake block 4 is rotatably connected with the large pulley 2 And the axis of rotation of the brake block 4 is parallel to the axis of the large pulley 2, and the spring 5 generates an elastic force that causes the brake block 4 to turn against the side wall of the friction sleeve.
刹车块4可与摩擦件6相触的部分与大带轮2轴1线的间距大于摩擦件6可与刹车块4相触的部分与大带轮2轴1线的距离,由于大带轮2与电机9输出端联动,当电机9输出端转动至工作速度时,刹车块4随大带轮2绕大带轮2的轴线转动,受离心力的作用刹车块4向远离大带轮2轴1线的方向活动,从而与摩擦件6相离,不产生摩擦力;当电机9停机失速,大带轮2减速,刹车块4获得的离心力不足以抵消弹簧5产生的弹力,弹簧5使刹车块4向靠近大带轮2轴1线的方向活动,直至刹车块4与摩擦件6相触产生制动力。利用离心力控制刹车机构,由于电机9转速稳定、停机减速时间稳定,刹车块4在电机9停机后产生制动力及制动工具所需的时间稳定,制动过程平稳。The distance between the portion of the brake block 4 that can contact the friction member 6 and the shaft 1 of the large pulley 2 is greater than the distance between the portion of the friction member 6 that can contact the brake block 4 and the axis of the large pulley 2, due to the large pulley 2 is linked with the output end of the motor 9. When the output end of the motor 9 is rotated to the working speed, the brake block 4 rotates around the axis of the large pulley 2 with the large pulley 2, and the brake block 4 is moved away from the large pulley 2 by the centrifugal force. The direction of the 1 line is so as to be separated from the friction member 6, and no friction is generated; when the motor 9 stops stalling, the large pulley 2 decelerates, the centrifugal force obtained by the brake block 4 is insufficient to offset the elastic force generated by the spring 5, and the spring 5 makes the brake The block 4 moves in a direction close to the 1 line of the large pulley 2 until the brake block 4 comes into contact with the friction member 6 to generate a braking force. By using the centrifugal force to control the brake mechanism, since the motor 9 has a stable rotation speed and a stable deceleration time, the brake block 4 generates a braking force and a time required for the brake tool after the motor 9 is stopped, and the braking process is stable.
除上述优选实施例外,本发明还有其他的实施方式,本领域技术人员可以根据本发明作出各种改变和变形,只要不脱离本发明的精神,均应属于本发明所附权利要求所定义的范围。 Other than the above-described preferred embodiments, there are other embodiments of the present invention, and those skilled in the art can make various changes and modifications in accordance with the present invention, as defined by the appended claims, without departing from the spirit of the invention. range.

Claims (4)

  1. 一种刹车机构,其特征在于:包括带轮轴(1)、大带轮(2)和装有电机(9)的支架(3),大带轮通过带轮轴转动连接在支架上且轴向固定,大带轮与电机输出端联动;大带轮上设有刹车块(4)和弹簧(5),支架上设有摩擦件(6),刹车块与大带轮活动连接并可在与摩擦件相离或相触的位置间移动,刹车块可与摩擦件相触的部分与大带轮轴线的间距大于摩擦件可与刹车块相触的部分与大带轮轴线的距离,弹簧产生使刹车块靠近摩擦件的弹力。A brake mechanism is characterized in that it comprises a pulley shaft (1), a large pulley (2) and a bracket (3) equipped with a motor (9), and the large pulley is rotatably connected to the bracket through the pulley shaft and axially fixed. The large pulley is linked with the output end of the motor; the large pulley is provided with a brake block (4) and a spring (5), and the bracket is provided with a friction member (6), and the brake block is movably connected with the large pulley and can be connected with the friction member When moving away from or touching the position, the distance between the portion of the brake block that can contact the friction member and the axis of the large pulley is greater than the distance between the portion of the friction member that can contact the brake block and the axis of the large pulley, and the spring generates the brake The block is close to the elastic force of the friction member.
  2. 根据权利要求1所述的一种刹车机构,其特征在于:还包括小带轮(7)、皮带(8),小带轮设于电机输出端并与电机输出端同轴同步转动,所述大带轮的轴线与小带轮的轴线平行,皮带套于大带轮、小带轮外使大带轮与小带轮联动。A brake mechanism according to claim 1, further comprising a small pulley (7) and a belt (8), wherein the small pulley is disposed at the output end of the motor and rotates coaxially with the output end of the motor. The axis of the large pulley is parallel to the axis of the small pulley, and the belt is sleeved on the large pulley and the small pulley to interlock the large pulley with the small pulley.
  3. 根据权利要求1或2所述的一种刹车机构,其特征在于:所述摩擦件为圆柱体摩擦套,摩擦套与所述机架固定连接或为一体结构,摩擦套设有轴孔,带轮轴穿过摩擦套与摩擦套同轴。The brake mechanism according to claim 1 or 2, wherein the friction member is a cylindrical friction sleeve, and the friction sleeve is fixedly connected to the frame or has an integral structure, and the friction sleeve is provided with a shaft hole. The axle passes through the friction sleeve and is coaxial with the friction sleeve.
  4. 根据权利要求3所述的一种刹车机构,其特征在于:所述刹车块设于所述大带轮的边缘与所述摩擦套的侧壁之间,刹车块与大带轮转动连接,且刹车块转动的轴线与大带轮的轴线平行,所述弹簧产生使刹车块转向碰触摩擦套侧壁的弹力。 A brake mechanism according to claim 3, wherein said brake block is disposed between an edge of said large pulley and a side wall of said friction sleeve, said brake block being rotatably coupled to said large pulley, and The axis of rotation of the brake block is parallel to the axis of the large pulley which creates an elastic force that causes the brake block to deflect against the side walls of the friction sleeve.
PCT/CN2015/082463 2014-07-10 2015-06-26 Brake mechanism WO2016004824A1 (en)

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CN201410328428.9A CN104141712A (en) 2014-07-10 2014-07-10 Brake mechanism

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EP1634849B1 (en) * 2004-09-09 2008-12-03 Demag Cranes & Components GmbH Safety braking device of a winding drum and working method for lapping the safety brake
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CN101699950A (en) * 2009-11-04 2010-05-05 金莱克电气股份有限公司 Braking device for gardening tools
CN202587876U (en) * 2011-12-16 2012-12-12 常州格力博工具有限公司 Mower brake device
CN104141712A (en) * 2014-07-10 2014-11-12 浙江亚特电器有限公司 Brake mechanism
CN204239549U (en) * 2014-07-10 2015-04-01 浙江亚特电器有限公司 A kind of braking mechanism

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