CN101044337A - 车轮制动钳 - Google Patents

车轮制动钳 Download PDF

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CN101044337A
CN101044337A CNA2006800005761A CN200680000576A CN101044337A CN 101044337 A CN101044337 A CN 101044337A CN A2006800005761 A CNA2006800005761 A CN A2006800005761A CN 200680000576 A CN200680000576 A CN 200680000576A CN 101044337 A CN101044337 A CN 101044337A
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brake
wheel
shoe
pad guide
brake shoe
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CN101044337B (zh
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戈兰·德约德耶维奇
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Hillmar Industries Ltd
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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D71/00—Mechanisms for bringing members to rest in a predetermined position
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F16D2055/002—Brake calipers assembled from a plurality of parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/12—Fluid pressure for releasing a normally applied brake, the type of actuator being irrelevant or not provided for in groups F16D2121/04 - F16D2121/10
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/64—Levers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

一种起重机车轮制动器,其在起重机车轮的相对侧面处具有一对制动蹄。各所述制动蹄具有制动器摩擦垫、制动器摩擦垫导向滚子及推压所述制动器摩擦垫导向滚子使其朝着所述车轮的方向突出所述制动器摩擦垫的弹簧。所述制动器摩擦垫导向滚子位于所述制动蹄的中心部分。所述车轮制动器包括一对制动杠杆及制动力生成器。各所述制动杠杆具有一个枢转地连接至各自制动蹄的第一端以及一个枢转地连接至所述制动力生成器的各自侧面的第二端。各制动杠杆通过其第一及第二端之间的支点来枢转地安装。所述车轮推动任一所述制动蹄上的所述制动器摩擦垫导向滚子,并且使得所述车轮制动器以所述支点为枢轴旋转以保持所述制动器摩擦垫与所述车轮分开。

Description

车轮制动钳
技术领域
本发明涉及一种用于例如起重机及其它材料搬运设备的车轮制动器,并且本发明是用于阻止起重机受动态及静态风载荷作用而运动的车轮制动器。
技术背景
现有的起重机制动器,例如于2000年2月1日授予David C.Heidenreich的第6,019,199号美国专利中所揭示的,为液压钳盘式制动器(caliper diskbrake),其包括制动器摩擦垫自激磨损调节器以保持恒定的制动间隙。这些制动器仅在受制动力的车轮没有明显的横向运动或漂移时才能防止摩擦垫的磨损。然而,对于许多起重机,车轮实质是横向漂移的。在此情形下,需要一种在车轮横向漂移时保持车轮与制动器摩擦垫间的分开的车轮制动器,并且在制动时提供制动器摩擦垫与轮侧面的对齐。
发明内容
因此,本发明旨在提供一种新颖的、经改良的车轮制动钳,其在使用时可减少甚至完全消除不制动时的制动器摩擦垫的磨损,并且为了制动时的均匀磨损可以将该制动器摩擦垫与车轮自动对齐。
根据本发明,提供了一种车轮制动器,包括制动钳,所述制动钳具有一对设置在制动杠杆上的制动蹄、各制动蹄上附设有一对制动器摩擦垫,该制动器摩擦垫带有相对的面,以及可操作地连接至制动蹄的制动力生成器用于将所述制动蹄推向车轮的相对侧面,其特征在于:各所述制动蹄具有制动器摩擦垫导向滚子及弹簧,所述弹簧推压各自的所述制动器摩擦垫导向滚子使其突出所述制动器摩擦垫。
所述制动器摩擦垫导向滚子及弹簧用于保持不制动时所述车轮(可能会横向漂移)与所述制动器摩擦垫分开,且进一步用于使所述制动器摩擦垫在制动时与所述车轮的所述侧面大致对齐。
所述制动器摩擦垫导向滚子最好位于所述制动蹄的中心部分。置于此位置时,每个制动蹄只需一个制动器摩擦垫导向滚子。此外,所述在此位置的制动器摩擦垫导向滚子用于提供一个使得所述制动器摩擦垫与所述车轮的侧面保持平行的导向装置。
各所述制动杠杆最好有一个与所述制动蹄中的一个枢转连接的第一端,和一个与所述制动力生成器枢转连接的相对端,并且各所述制动杠杆最好还包括支点,所述支点位于所述第一及第二端之间且枢装地安装所述杠杆。实际使用中,所述车轮推压任一所述制动器摩擦垫导向滚子,使得所述车轮制动器以所述支点为枢轴旋转以保持所述制动器摩擦垫与所述车轮分开。
本发明的较佳实施例中,各制动蹄有朝向各自所述车轮侧面的表面,并且各所述制动器摩擦垫导向滚子有转动轴线并且位于各自所述制动蹄的中心位置。各所述制动器摩擦垫导向滚子的所述旋转轴线与各自的所述表面的平面平行。实际使用中,所述车轮推压任一所述制动器摩擦垫导向滚子,藉此使各自的所述制动蹄枢转且使所述旋转轴线与所述车轮的所述侧面平行。
附图说明
根据本发明以示例形式给出的较佳实施例的描述,并且结合附图,以更充分地了解本发明,其中:
图1为起重机的局部的侧视图,所述起重机带有安装于车轮上的车轮制动器;
图2为图1的该起重机局部的仰视图;
图3为图1的该车轮制动器的制动蹄的立体图;
图4为图3的该制动蹄的侧视图;
图5为沿图4中线A-A向的剖视图;
图6为图3的该制动蹄的仰视图;
图7为沿图6中线B-B向的剖视图;
图8为图3的制动蹄的俯视图。
具体实施方式
图1示出了车轮制动器20,其形式为杠杆式钳盘制动器。车轮制动器20通过安装部件26与起重机的标为24的部分,该制动器20用于制动车轮22。本实施例中,该起重机沿轨道移动,仅示出了其中的一条轨道28。
现参见图1及2,车轮制动器20在车轮22的两相对侧有一对制动蹄30以及一对制动杠杆32。制动力发生器40为弹簧启动、液压可释放活塞汽缸装置的形式。各制动杠杆32通过枢轴销34枢转地连接至其各自的制动蹄30,该枢轴销34穿过制动杠杆32的分叉端35。在相对的分叉端37处,制动杠杆32通过一对枢轴销36连接至制动力发生器40。各制动杠杆32通过枢轴销38连接至其各自的安装部件26,并且该枢轴销38构成位于枢轴销34与36之间的支点。
图3更详细地示出了制动蹄30中的一个,该制动蹄30有一细长部件,现有技术中称为制动片50。制动片50有第一表面52及第二表面54。制动器摩擦垫56分为两个分开部分附设在第一表面52。
一对制动蹄安装凸缘(lug)或安装部件58从制动片50的第二表面的靠近相对端部处延伸出来。各安装部件58设有孔59。枢轴销34穿过制动蹄安装部件58的孔59将制动蹄30连接至其各自的制动杠杆32。
因此,各制动杠杆32通过各自的枢轴销34枢转地连接至其各自的制动蹄30。本实施例中,制动杠杆32的分叉端35有一对大致平行的臂45(见图1),并且分叉端37有一对大致平行的臂47。臂45有孔49,且臂47有孔51。枢轴销34穿过分叉端35的这对臂45的孔49。类似地,枢轴销36穿过分叉端37的孔51以将制动力生成器40枢轴地连接至制动杠杆32。
现参见图4至8,图5中以60标识的弹簧组件从一个安装部件58上突出。该弹簧组件60包括螺旋压缩弹簧62及U形部件64。螺旋压缩弹簧62的第一端66抵靠住一个安装部件58孔 63内的弹簧固定环68(见图7),且螺旋压缩弹簧62的第二端70抵靠住U形部件64的表面72。
制动片50的表面54在制动蹄30的相对侧有凸起部96,且该凸起部96有一对孔98。U形部件64枢转地安装于穿过孔98的枢轴销100上。图6中仅示出一个的挡圈102将枢轴销100的相对端固定于该凸起部96。螺旋压缩弹簧62推压U形部件64使其以枢轴销100为枢轴旋转,下文将详述。
U形部件64有一对臂76(见图6),各臂76有L形的延伸部78(见图5),该延伸部横着穿过各自的臂76。各L形延伸部78有孔80,并且至少一个L形延伸部78有内螺纹孔82供螺栓92拧入。
图5中以84标识的滚子组件(roller assembly)包括可绕滚珠轴承90上的销88旋转的制动器摩擦垫导向滚子(guide roller)86。该滚子组件84通过轴88连接至弹簧组件60的L形延伸部78,该轴88穿过孔80并利用以螺纹接合方式设置在轴88两端的螺母89固定。
弹簧组件60推压滚子86使U形部件64以枢轴销100为枢轴旋转从而使滚子86突出制动器摩擦垫56。螺栓92起紧定螺钉(set screw)的作用,其通过贴靠住制动片50第二表面54突起部96上的平面94来可调整地限制该滚子86突出制动器摩擦垫56的突出量。
如最佳地显示于图4、6及7,制动器摩擦垫导向滚子86位于制动蹄30的中心位置。较之将制动器摩擦垫导向滚子86置于制动蹄30的其它区域(例如该制动蹄30的任一端),这样更有利,其原因是位于制动蹄30任一端的制动器摩擦垫导向滚子不处于压力的中心,且会产生一个绕制动蹄销的力矩。这一力矩会导致制动蹄绕枢轴旋转,并且需要导向装置,例如位于该制动蹄相对侧的一对制动器摩擦垫导向滚子,来防止这种枢转。因此,通过将该滚子置于该制动蹄的中心,每一制动蹄仅需一个滚子组件而不是两个。
各制动蹄使用一个较宽的制动器摩擦垫导向滚子(如本实施例),或者各制动蹄使用两个位于中心的制动器摩擦垫导向滚子(未示出),作为一种导向装置而提供,该导向装置使得制动器摩擦垫56与自由运转条件下的该车轮的侧面保持平行。这防止了制动器摩擦垫56与车轮22的接触,因此防止了该制动器处于释放时该制动器摩擦垫56的磨损。
本实施例中,可容易地将弹簧组件60从制动蹄30上拆除。为了拆除弹簧组件60,可将挡圈102拆除且将枢轴销100抽出,从而将U形部件64及弹簧62从枢轴销上拆下。
制动期间,即在图2所示的制动力生成器将制动蹄30朝车轮22的相对侧推压时,因为由制动力生成器40生成的制动力足以克服弹簧62的力,制动器摩擦垫导向滚子86可容易地缩进制动蹄30内。制动器摩擦垫导向滚子86开始缩回直至制动器摩擦垫56接触到车轮22的相对侧。在该点,制动器摩擦垫56以及制动器摩擦垫导向滚子86与车轮22接触,如图2所示。
如图5所示,制动器摩擦垫导向滚子86有转动轴线104,即轴88的轴线。转动轴线104与制动蹄30的第一表面52平行,且相应地与制动器摩擦垫56的制动器摩擦垫表面106平行。由于制动器摩擦垫导向滚子86接触车轮22,在如上文所述的情况下,所述制动器摩擦垫导向滚子的旋转轴线102使制动蹄30与车轮的侧面108对齐,因而使制动器摩擦垫56与车轮的侧面108对齐,如图2所示。这防止了制动器摩擦垫表面106与车轮的侧面108的不均匀接触,该不均匀接触会导致制动器摩擦垫56的不均匀磨损。
另一种情形下,车轮22仅推压其中一个制动器摩擦垫56。当车轮22有足够的横向漂移时会发生这种情形,所述横向漂移是由车轮支撑轴承的排列或者制造公差造成的。在此情况下,车轮22会推压那个制动蹄30的制动器摩擦垫导向滚子86。弹簧62朝车轮22的反作用力足够保持将制动器摩擦垫56与车轮22分开。因此,车轮22对制动器摩擦垫导向滚子86的推压足以使整个的车轮制动器20以枢轴连接38为枢轴旋转,从而防止该车轮与制动器摩擦垫56接触。
通过对调节螺栓92进行调节,可以保持车轮22的表面与制动器摩擦垫56间的最小缩回空隙。
如本技术领域中技术人员应理解的,可在本发明的权利要求保护范围内作出各种修改。

Claims (8)

1、一种车轮制动器,包括制动钳,所述制动钳具有一对设置在制动杠杆(32)上的制动蹄(30),各制动蹄(30)上附设有一对制动器摩擦垫(56),该制动器摩擦垫(56)带有相对的面,和可操作地连接至制动蹄(30)的制动力生成器(40),用于将所述制动蹄(30)推向车轮(22)的相对侧面,其特征在于:各所述制动蹄(30)具有制动器摩擦垫导向滚子(86)及弹簧(62),所述弹簧推压各自的所述制动器摩擦垫导向滚子(86)使其突出所述制动器摩擦垫(56)。
2、如权利要求1所述的车轮制动器,其特征在于,所述制动器摩擦垫导向滚子(86)位于所述制动蹄(30)的中心部分。
3、如权利要求1所述的车轮制动器,其特征在于,各所述制动杠杆(32)具有一个枢转地连接至各自制动蹄(30)的端部(35),和一个枢转地连接至所述制动力生成器(40)的相对端,以及位于所述第一及第二端部之间且枢转地安装所述杠杆的支点,藉此所述车轮推动任一所述制动器摩擦垫导向滚子(86)的压力使得所述车轮制动器以所述支点为枢轴旋转以保持所述制动器摩擦垫(56)与所述车轮分开。
4、如权利要求3的车轮制动器,其特征在于,各所述制动蹄(30)有朝向各自所述车轮侧面的表面(52),并且各所述制动器摩擦垫导向滚子(86)有一转动轴线并且位于各自所述制动蹄(30)的中心位置,各所述制动器摩擦垫导向滚子(86)的所述旋转轴线与各自的所述表面(52)的平面平行,藉此所述车轮推动所述制动器摩擦垫导向滚子(86)中的一个的压力使各自的所述制动蹄(30)枢转,使所述旋转轴线与所述车轮的所述侧面平行。
5、如权利要求1至4中任意一项所述的车轮制动器,其特征在于,各所述制动蹄(30)包括细长部件,所述细长部件具有第一表面(52)、第二表面(54)及开口,所述开口从所述第一表面(52)延伸至所述第二表面(54),所述制动器摩擦垫附设在所述第一表面,并且所述弹簧(62)推压所述导向滚子使其通过所述开口。
6、如权利要求1至5中任意一项所述的车轮制动器,其特征在于,各所述制动蹄(30)包括枢转地连接至所述制动蹄(30)的U形部件(64),所述制动器摩擦垫导向滚子(86)可旋转地连接至所述U形部件(64),并且利用弹簧(62)枢转地推压所述U形部件(64)使所述制动器摩擦垫导向滚子(86)从所述制动蹄(30)突出。
7、如权利要求6所述的车轮制动器,其特征在于,一枢轴杆将所述U形部件(64)枢转地连接至所述制动蹄(30),并且一紧定螺钉(92)用于可调节地限制所述U形部件(64)相对所述制动蹄(30)的枢转。
8、如权利要求6或7所述的车轮制动器,其特征在于,所述U形部件(64)包括成U形的一对臂(76)及一对L形延伸部(78),各所述L形延伸部在靠近所述臂(76)的端部处横向穿过各自的所述臂(76)。
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