WO2009089683A1 - Unité de poussée de freinage supplémentaire pour frein - Google Patents
Unité de poussée de freinage supplémentaire pour frein Download PDFInfo
- Publication number
- WO2009089683A1 WO2009089683A1 PCT/CN2008/002035 CN2008002035W WO2009089683A1 WO 2009089683 A1 WO2009089683 A1 WO 2009089683A1 CN 2008002035 W CN2008002035 W CN 2008002035W WO 2009089683 A1 WO2009089683 A1 WO 2009089683A1
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- WO
- WIPO (PCT)
- Prior art keywords
- brake
- sleeve
- hydraulic cylinder
- superimposed
- driving
- Prior art date
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Classifications
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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
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes with two brake-blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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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
- 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
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
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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
- F16D2123/00—Multiple operation forces
Definitions
- This invention relates to brakes, and in particular to pusher improvements for brakes. Background technique
- the brake is mainly composed of a brake portion and a pusher or pusher.
- a "force pusher for a brake" through which the pusher and the brake portion pass The driving arm is hingedly connected to the braking portion to make the braking portion work.
- the structure of the pusher comprises a driving device and a liquid pump and a liquid storage tank driven by the driving device, and a hydraulic cylinder.
- the inlet of the liquid pump communicates with the liquid storage tank, and the outlet of the liquid pump communicates with the driving liquid chamber of the hydraulic cylinder, the hydraulic cylinder
- the non-driven liquid chamber communicates with the reservoir.
- the superimposed brake pusher not only satisfies the braking portion of the normally closed brake, but also achieves braking after the braking portion is realized. It also has an operational function that satisfies the implementation of superimposed braking.
- the superimposed brake pusher includes a driving device 1 and a liquid pump 2 and a liquid storage tank 3 driven by the driving device, a hydraulic cylinder 4, and an inlet of the liquid pump 2 and
- the liquid storage tank 3 communicates with each other, the outlet of the liquid pump 2 communicates with the driving liquid chamber 5 of the hydraulic cylinder, the non-driving liquid chamber 6 of the hydraulic cylinder communicates with the liquid storage tank 3, and the piston rod of the hydraulic cylinder 4, that is, the outer end of the push rod 7 is used for It is connected to the driving arm 8 in the braking portion 9 to act on the brake arm 10 thereof, so that the braking portion is brought into an operating state.
- the improved structure is that the push rod (7) is provided with a sleeve (12).
- the sleeve (12) acts on a mechanism for performing superimposed braking on the brake portion, and the push rod (7) can extend outwardly to extend the sleeve (12) outwardly, and the push rod (7) is inward
- the superposed brake pusher further includes a drive portion for driving the sleeve to extend and retract.
- the outer section of the sleeve (12) is located outside the reservoir (3), and the inner section of the sleeve (12) is located in the non-driving liquid chamber (6) of the hydraulic cylinder (4);
- the driving part comprises an electromagnetic device (13) acting on the sleeve (12), the electromagnetic device (13) comprising an electromagnetic coil and a suction block (14), the electromagnetic coil being connected to the oil storage tank (4),
- the suction block (14) is attached to the sleeve (12) so as to be movable with the sleeve (12).
- the suction block is used in conjunction with an electromagnetic coil.
- the present invention is provided with a sleeve 12 acting on the superimposed brake mechanism 11, and an electromagnetic device 13 acting on the sleeve 12, the push rod 7 is extended to the set position and the sleeve 12 is extended.
- the electromagnetic device 13 is cut off.
- the power supply causes the sleeve 12 to be retracted to control the implementation of the superimposed brake, that is, the superimposed brake pusher has a separate operation for achieving superimposed braking in the case of satisfying the normally closed brake opening and resetting the normally closed brake.
- the superimposed brake pusher Since the superimposed brake pusher has the function of releasing and restoring the braking part, it also has a separate operation function for superimposing braking. Therefore, in the case of frequent braking, the push rod can be operated separately.
- the electromagnetic device 13 of the present invention can be separately operated, and the superimposed braking is performed by the shrinkage of the sleeve 12 to increase the braking stability of the object to be braked under the static condition of the brake, which can effectively prevent Possible effects or damage to the object being braked due to strong winds, etc.
- the application of the present invention can satisfy the requirements of the braking portion and the superimposed braking of the brake portion. , so that a normally closed brake has the braking function and effect of two normally closed brakes.
- the brake can realize the braking and superimposed braking requirements of the braking portion, so that a normally closed brake has the braking function and effect of two normally closed brakes. Therefore, the brake of the present invention is applied. Compared to two similar brakes, it saves consumables, reduces manufacturing and usage costs, reduces energy consumption, and reduces the space required for installation.
- the invention adopts the power supply for cutting off the electromagnetic device to realize the superimposed braking, the braking reaction time is short and the braking speed is fast, which is beneficial to improving the emergency safety braking required by the object to be braked.
- Figure 1 is a structural view of the solution of the present invention
- Figure 2 is a view showing an example of application of the present invention to a brake
- Figure 3 is an enlarged view of the structure of the A direction in Figure 2;
- Figure 4 is a view showing an operation state of the application example shown in Figure 2, showing the state in which the normally closed brake and the superimposed brake of the brake portion of the brake are released;
- FIG. 5 is another working state view of the application example shown in FIG. 2, showing the brake portion resetting the normally closed brake, but the superimposed brake is still in an unbraked state;
- Figure 6 is a view showing another example of application of the present invention to a brake. detailed description
- FIG. 1 is a structural view of the solution of the present invention.
- the superimposed brake pusher comprises a driving device 1 and a liquid pump 2 driven by the driving device, a liquid storage tank 3, a hydraulic cylinder 4, an inlet of the liquid pump 2 communicating with the liquid storage tank 3, an outlet of the liquid pump 2 and a hydraulic cylinder
- the driving liquid chamber 5 communicates with the non-driving liquid chamber 6 of the hydraulic cylinder communicating with the liquid storage tank 3, and the piston rod of the hydraulic cylinder 4, that is, the outer end of the push rod 7 is connected to the driving arm 8 in the braking portion 9 to act on
- the brake arm 10 is configured to realize a working state, wherein the push rod 7 is provided with a sleeve 12, the sleeve 12 acts on a mechanism for performing superimposed braking on the brake portion, and the push rod 7 When extending outward, the sleeve 12 can be extended outward. When the push rod 7 is retracted inward, the sleeve 12 and the push rod 7 can
- the outer section of the sleeve 12 is located outside the reservoir 3, and the inner section of the sleeve 12 is located in the non-driving liquid chamber 6 of the hydraulic cylinder 4, and the driving portion of the superposition brake pusher includes
- the electromagnetic device 13 of the sleeve 12 includes an electromagnetic coil and a suction block 14, which is configured as shown in the figure.
- the hydraulic cylinder 4 is disposed in the liquid storage tank 3, and the two are combined into one whole, the electromagnetic coil Then connected to the tank wall of the oil storage tank 4, the suction block 14 is located between the electromagnetic coil and the piston ring 16, and is connected to the sleeve 12, and can move with the sleeve 12, and the suction block 14 is used together with the electromagnetic coil;
- the outer end of the sleeve 12 has a disc-like structure 12' for facilitating contact with the thrust arm 18 of the superimposed brake mechanism 11;
- the accumulator tank 4 has an air chamber therein to eliminate the accumulator tank 3
- the vacuum state inside facilitates the flow of liquid medium during the operation of the pusher.
- the driving portion herein is not limited to the above configuration.
- the sleeve 12 can be driven by a motor through a corresponding structure that can be external to the hydraulic cylinder.
- the hydraulic cylinder 4 can be disposed in the liquid storage tank 3, and the two are combined as a whole.
- the installation form has the characteristics of compact structure and small occupied space.
- the accumulator tank 3 can be separately provided in a component type, and the corresponding communication is realized with the hydraulic cylinder 4 through the pipeline.
- the electromagnetic coil of the electromagnetic device should be connected to the liquid storage tank 3; when the liquid storage tank 3 is separately provided in the component type, the electromagnetic coil of the electromagnetic device should pass through the connecting member 15 and the hydraulic cylinder. 4 cylinder wall connection, electromagnetic coil or connected to other components;
- Figure 2 is an example of the application of the present invention to a brake.
- the lower end of the pusher that is, the connecting end
- the pusher has a connecting end with the frame or other fixing members, and is a horizontal structure.
- Figure 6 is another example of the application of the present invention to a brake.
- the right end of the pusher that is, the connecting end is hingedly connected with the extension arm 21 of a brake arm 10 in the braking portion, that is, the pusher has a connection with the extension arm 21 of a brake arm 10 in the braking portion.
- the driving arm 8 in the braking portion is an extension arm of the other brake arm 10 in the braking portion, which is a vertical structure.
- the driving device 1 of the present invention may be a different type of driving device, as shown in the figure, an electric motor, and the liquid pump 2 is a centrifugal pump.
- the liquid pump 2 is a centrifugal pump.
- a plunger pump in which the electromagnet 2 and the liquid pump are integrated may be used.
- the specific working process of the superimposed brake pusher is as follows:
- the liquid pump 2 is driven to operate, and the pressurized liquid enters the driving liquid chamber 5 of the hydraulic cylinder 4, and the piston ring 16 moves upward, the piston rod, that is, the push rod 7 extends to the set position, and drives the sleeve 12 to extend outward, and the suction block 14 is in contact with the electromagnetic coil, and the thrust rod 20 of the superimposed brake mechanism 11 is extended.
- the liquid in the non-driving liquid chamber 6 of the hydraulic cylinder 4 flows to the accumulator tank 3, overcoming the braking force of the brake mechanism 17 in the brake portion and superimposing the brake mechanism 11.
- the two brake arms 10 are opened and remain positioned, that is, the normally closed brake and the superimposed brake of the brake are released, and the object to be braked is in the running state at this time;
- the two brake arms 10 are inwardly retracted for the first time, and the brakes are resetting the normally closed brake; at this time, since the electromagnetic device 13 is energized, the suction block 14 of the electromagnetic device 13 is still sucked. Keeping the positioning, the sleeve 12 and the thrust rod 20 of the superimposed brake mechanism 11 are still extended, so that the superimposed brake member 11 is still in the unbraking state of energy storage, as shown in FIG. 5; When the object to be braked is in a frequently braking condition, the expansion and contraction of the push rod 7 can be separately operated to achieve the normally closed brake and the normally closed brake;
- the suction of the suction block 14 is released by the operation of cutting off the power of the electromagnetic device 13, and the superimposing member 1 1 releases the energy, so that the thrust rod 20 is retracted, and the thrust arm 18 is pressed around its connecting shaft 19
- the sleeve 12 is retracted, and the suction block 14 is caused to fall away from the electromagnetic coil of the electromagnetic device 13, and the retraction of the sleeve 12 releases the energy storage state of the superimposed brake mechanism 11, such as In the state shown in Figures 1 and 2, the energy released by the superimposed brake mechanism 11 causes the other end of the thrust arm 18 to act on the brake arm 10 of the brake portion, causing the two brake arms 10 to retract inwardly or to cause inward retraction.
- the superimposed brake pusher realizes the operation function of superimposing braking.
- the superimposed braking is realized by the separate operation of cutting off the power supply of the electromagnetic device 13, so that the normally closed braking and the superimposed braking are both in the braking state, so that the braking of the object to be braked is more stable. reliable.
- the present specification describes two examples of the application of the present invention to a brake, and there are other application examples.
- the present invention When applied to brakes of different structural forms, the present invention will have a corresponding deformation structure, which is based on the technical solution of the present invention. All variants are within the scope of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Description
制动器的叠加制动推动器 技术领域
本发明涉及制动器, 具体涉及制动器的推动器改进。 背景技术
制动器主要由制动部分和推动器或推动装置组成。 公开日为 2007年 8月 22日、 公开号为 CN2937582的专利文献公开了 (申请号 200620050535. 0 ) 一种 "用于制动 器的变力推动器",该推动器通过其推杆与制动部分中的驱动臂铰轴式连接而作用于制 动部分, 使得制动部分实现工作状态。 该推动器的结构包括驱动装置和由该驱动装置 驱动的液体泵及蓄液箱、 液压缸, 液体泵的进口与蓄液箱相通, 液体泵的出口与液压 缸的驱动液腔相通, 液压缸的非驱动液腔与蓄液箱相通。 如应用于常闭式制动时, 推 动器的推杆伸出至所设定的位置时, 而解除常闭状态的制动, 当推杆缩进回位后, 即 恢复制动部分的常闭制动,该推动器只具有满足制动部分产生一次性制动的操作功能。 发明内容
本发明的目的是提供一种可使制动器实现叠加制动的推动器, 本叠加制动推动器 不但能满足常闭式制动器的制动部分实现制动, 而且在制动部分实现制动后, 还具有 满足实现叠加制动的操作功能。
本发明的技术方案参见图 1和图 2进行说明, 本叠加制动推动器包括驱动装置 1 和由该驱动装置驱动的液体泵 2及蓄液箱 3、液压缸 4, 液体泵 2的进口与蓄液箱 3相 通, 液体泵 2的出口与液压缸的驱动液腔 5相通, 液压缸的非驱动液腔 6与蓄液箱 3 相通, 液压缸 4的活塞杆即推杆 7外端用于与制动部分 9中的驱动臂 8连接而作用于 其制动臂 10, 使得制动部分实现工作状态, 改进的结构是, 所述推杆 (7 ) 上设置有 套管 (12 ) , 所述套管 (12 ) 作用于对制动部分执行叠加制动的机构, 且推杆 (7 ) 向 外伸出时可带动套管(12 ) 向外伸出, 在推杆(7 )向内缩进时, 套管(12 )与推杆(7 ) 可产生相对滑动;且所述叠加制动推动器还包括用于驱动套管伸出和缩进的驱动部分。
可选地, 所述套管 (12 ) 的外段位于蓄液箱(3 ) 的外部, 套管 (12) 的内段位于 液压缸 (4 ) 的非驱动液体腔 (6 ) 内; 所述驱动部分包括作用于套管 (12 ) 的电磁装 置 (13 ), 电磁装置 (13 ) 包括电磁线圈和吸块 (14 ) , 电磁线圈与蓄油箱 (4 ) 连接,
吸块 (14) 连接于套管 (12) 上从而能够随套管 (12 ) 移动。 吸块与电磁线圈配合使 用。
与背景技术比, 本发明具有的技术效果是:
1、 由于本发明设有作用于叠加制动机构 11 的套管 12, 以及设有作用于套管 12 的电磁装置 13, 在推杆 7伸出至所设定的位置并带动套管 12伸出后, 以控制常闭制 动和叠加制动的解除, 在通过切断驱动装置的电源使推杆 7缩进而复位常闭制动后, 当需要进行叠加制动时, 通过切断电磁装置 13的电源, 使得套管 12缩进而控制叠加 制动的实现, 即本叠加制动推动器在满足常闭制动的开启和复位常闭制动的情况下, 还具有满足实现叠加制动的单独操作功能。
2、 由于本叠加制动推动器除具有解除和恢复制动部分的制动外, 还具有进行叠加 制动的单独操作功能, 因此, 在频繁制动的工况下, 可通过单独操作推杆 7的伸缩使 制动部分的制动解除和恢复, 以满足频繁制动工况的需要, 如需要更稳定可靠的制动, 尤其是当被制动物体处于不需要频繁制动或处于歇工、 停工状态时, 可再单独操作本 发明的电磁装置 13, 并通过套管 12的缩进而进行叠加制动, 以增加被制动物体在制 动静态情况下的制动稳定性, 可有效防范因大风等对被制动物体有可能造成的影响或 破坏。
3、 由于本叠加制动推动器具有解除和恢复制动部分的制动, 以及进行叠加制动的 操作功能, 因此, 应用本发明可满足制动器实现制动部分的制动和叠加制动的要求, 使一台常闭式制动器具有两台常闭制动器的制动功能和效果。
4、 由于应用本发明可满足制动器实现制动部分的制动和叠加制动的要求, 使一台 常闭式制动器具有两台常闭制动器的制动功能和效果, 因此, 应用本发明的制动器相 对于两台同类制动器而言, 可节省耗材、 降低制造和使用成本、 降低能耗, 并可减少 安装所需的空间。
5、由于本发明采用切断电磁装置电源来实现叠加制动,因此具有制动反应时间短、 制动速度快的特点, 有利于提高被制动物体所需要的紧急安全制动。
下面结合附图和具体实施方式对本发明进一步说明。 附图说明
图 1为本发明方案的结构图;
图 2为本发明应用于制动器的一个实例视图;
图 3为图 2中 A向结构放大图;
图 4为图 2所示应用实例的一种工作状态视图,展示了制动器制动部分的常闭制 动和叠加制动均处解除的状态;
图 5为图 2所示应用实例的另一工作状态视图, 展示了制动部分复位常闭制动, 但其叠加制动仍处未制动状态;
图 6为本发明应用于制动器的另一实例视图。 具体实施方式
下面描述根据本发明的制动器的叠加制动推动器。
图 1为本发明方案的一种结构图。 本叠加制动推动器包括驱动装置 1和由该驱动 装置驱动的液体泵 2及蓄液箱 3、 液压缸 4, 液体泵 2的进口与蓄液箱 3相通, 液体泵 2的出口与液压缸的驱动液腔 5相通, 液压缸的非驱动液腔 6与蓄液箱 3相通, 液压 缸 4的活塞杆即推杆 7外端用于与制动部分 9中的驱动臂 8连接而作用于其制动臂 10, 使得制动部分实现工作状态, 其中, 所述推杆 7上设置有套管 12, 所述套管 12作用 于对制动部分执行叠加制动的机构, 且推杆 7向外伸出时可带动套管 12向外伸出, 在 推杆 7向内缩进时, 套管 12与推杆 7可产生相对滑动; 且所述叠加制动推动器还包括 用于驱动套管伸出和缩进的驱动部分。
如图中所示, 当推杆 7伸出至所设定位置时, 通过驱动臂 8作用于制动臂 10而 使常闭制动解除, 同时使叠加制动机构 11叠加制动解除, 当推杆 7缩进后即恢复常闭 制动。
如图 1中所示, 套管 12的外段位于蓄液箱 3的外部, 套管 12的内段位于液压缸 4的非驱动液体腔 6内, 本叠加制动推动器的驱动部分包括作用于套管 12的电磁装置 13, 电磁装置 13包括电磁线圈和吸块 14, 如图所示实施结构, 所述的液压缸 4设置 在蓄液箱 3内, 两者组合为一整体, 电磁线圈则与蓄油箱 4的箱壁连接, 吸块 14位于 电磁线圈与活塞环 16之间, 并连接于套管 12上, 可随套管 12移动, 吸块 14与电磁 线圈配合使用; 此外, 所述的套管 12外端上有一盘状结构 12', 以利于与叠加制动机 构 11中的推力臂 18进行控制时的接触; 所述的蓄油箱 4内有空气腔, 以消除蓄油箱 3内的真空状态, 利于推动器工作过程中液体介质的流动。
需要说明的是, 这里的驱动部分不限于上述结构。 例如, 套管 12可以由电机通过 相应的结构驱动, 该电机可以位于液压缸的外部。
在实施本发明过程中, 液压缸 4可设置在蓄液箱 3内, 两者组合为一整体, 如图 1至图 6所示, 此种设置形式具有结构紧凑、 占用空间小等特点。 此外, 蓄液箱 3可 单独设置成分体式, 通过管路与液压缸 4实现相应的连通。 当液压缸 4设置在蓄液箱 3内时, 电磁装置的电磁线圈宜与蓄液箱 3连接; 当蓄液箱 3单独设置成分体式时, 电磁装置的电磁线圈宜通过连接件 15与液压缸 4的缸壁连接,电磁线圈或者是连接于 其他构件上;
图 2为本发明应用于制动器的一个实例。 本实例中, 推动器的下端即连接端与座 架或与其它固定件连接, 既本推动器有与座架或与其它固定件连接的连接端, 为卧式 结构。
图 6为本发明应用于制动器的另一个实例。 本实例中, 推动器的右端即连接端与 制动部分中一制动臂 10的延长臂 21铰轴式连接, 即本推动器有与制动部分中一制动 臂 10的延长臂 21连接的连接端, 制动部分中的驱动臂 8为制动部分中另一制动臂 10 的延长臂, 为立式结构。
本发明的驱动装置 1可为不同类型的驱动装置, 如图所示为电动机, 液体泵 2为 离心泵, 初次外, 也可采用电磁铁 2与液体泵结合为一体的柱塞泵。
本叠加制动推动器的一个具体的工作过程参见图 2、 图 4、 图 5说明如下: 驱动装置 1工作时带动液体泵 2运转,压力液体进入液压缸 4的驱动液体腔 5内, 活塞环 16向上移动, 活塞杆即推杆 7伸出至所设定的位置, 并带动套管 12向外伸出, 吸块 14即与电磁线圈接触, 叠加制动机构 11的推力杆 20随之伸出, 如图 4所示, 此 时, 液压缸 4的非驱动液体腔 6内的液体则流向蓄油箱 3 , 在克服制动部分中的制动 机构 17的制动力和叠加制动机构 11的叠加制动力的情况下, 两制动臂 10张开, 并保 持定位, 即制动器的常闭制动和和叠加制动均被解除, 此时被制动物体则处于运转状 态;
当需要制动时, 切断驱动装置 1的电源, 液体泵 2停止运转, 液压缸 4的驱动液 体腔 5内的液体即处于非压力状态, 因制动器常闭制动机构 17的制动力作用, 活塞杆 即推杆 7缩进而复位, 活塞环 16随之下落, 蓄油箱 3内的非压力液体回流液压缸 4的 非驱动液体腔 6内, 液压缸的驱动液体腔 5内的液体则经由液体泵向蓄液箱 3回流, 两制动臂 10向内产生第一次缩进, 制动器即复位常闭制动; 此时, 因电磁装置 13通 电, 电磁装置 13的吸块 14仍被吸合而保持定位, 套管 12和叠加制动机构 11的推力 杆 20仍处伸出状态, 使得叠加制动构件 11仍处在蓄能的未制动状态, 如图 5所示;
当被制动物体处于频繁制动的工况时, 可单独操作推杆 7的伸缩来实现常闭制动的幵 启和复位常闭制动;
当需要叠加制动时, 通过切断电磁装置 13电源的操作, 吸块 14的吸力被解除, 叠加制构件 1 1即释放能量, 使得推力杆 20缩进, 推力臂 18即绕其连接轴 19按图示 的顺时针方向下摆, 套管 12即缩进, 并带动吸块 14离开电磁装置 13的电磁线圈而下 落, 套管 12的缩进即解除对叠加制动机构 11的蓄能状态, 如图 1和图 2所示状态, 叠加制动机构 11释放的能量使推力臂 18的另一端作用于制动部分的制动臂 10, 使得 两制动臂 10向内缩进或产生向内缩进的趋势而实施叠加制动,本叠加制动推动器从而 实现叠加制动的操作功能。在制动器复位常闭制动后, 再通过切断电磁装置 13电源的 单独操作而实现叠加制动, 使常闭制动和叠加制动均处制动状态, 使被制动物体的制 动更加稳定可靠。
本说明书描述了本发明应用于制动器的两种实例, 同样还存在其他应用实例, 在 应用于不同结构形式的制动器时, 本发明将会有相应的变形结构, 凡在本发明技术方 案基础上的所有变型结构均属于本发明的保护范围。
Claims
1、 制动器的叠加制动推动器, 包括驱动装置 (1)和由该驱动装置驱动的液体泵 (2)及蓄液箱(3)、 液压缸(4), 液体泵(2)的进口与蓄液箱(3)相通, 液体泵(2) 的出口与液压缸的驱动液腔(5)相通, 液压缸的非驱动液腔(6)与蓄液箱(3)相通, 液压缸 (4) 的推杆 (7) 外端用于与制动部分中的驱动臂连接, 其特征是:
所述推杆 (7) 上设置有套管 (12), 所述套管 (12) 作用于对制动部分执行叠加 制动的机构, 且推杆 (7) 向外伸出时可带动套管 (12) 向外伸出, 在推杆 (7) 向内 缩进时, 套管 (12) 与推杆 (7) 可产生相对滑动; 且
所述叠加制动推动器还包括用于驱动套管伸出和缩进的驱动部分。
2、 按照权利要求 1所述的制动器的叠加制动推动器, 其特征是- 所述套管 (12) 的外段位于蓄液箱 (3) 的外部, 套管 (12) 的内段位于液压缸 (4) 的非驱动液体腔 (6) 内;
所述驱动部分包括作用于套管 (12) 的电磁装置 (13), 电磁装置 (13) 包括电 磁线圈和吸块 (14), 电磁线圈与蓄油箱 (4) 连接, 吸块 (14) 连接于套管 (12) 上 从而能够随套管 (12) 移动。
3、 按照权利要求 2所述的制动器的叠加制动推动器, 其特征是- 所述电磁装置 (13) 的电磁线圈或者是通过连接件 (15) 与液压缸 (4) 连接, 或者是连接于其他构件上。
4、 按照权利要求 1-3中任一项所述的制动器的叠加制动推动器, 其特征是- 所述的套管 (12) 上部设有一盘状结构 (12' )。
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US5244060A (en) * | 1991-05-09 | 1993-09-14 | Hitachi, Ltd. | Elevator apparatus |
CN2216061Y (zh) * | 1993-09-25 | 1995-12-27 | 哈尔滨铁路分局装卸管理所 | 双级双力矩液压推杆制动器 |
JP2003343608A (ja) * | 2002-05-29 | 2003-12-03 | Hitachi Ltd | 電磁ブレーキ装置 |
CN2937582Y (zh) * | 2006-04-05 | 2007-08-22 | 长沙三占惯性制动有限公司 | 用于制动器的变力推动器 |
CN101086283A (zh) * | 2006-06-05 | 2007-12-12 | 谢兴云 | 制动器用推动器 |
CN101319690A (zh) * | 2007-06-08 | 2008-12-10 | 谢兴云 | 用于制动器的变力推动器 |
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US5244060A (en) * | 1991-05-09 | 1993-09-14 | Hitachi, Ltd. | Elevator apparatus |
CN2216061Y (zh) * | 1993-09-25 | 1995-12-27 | 哈尔滨铁路分局装卸管理所 | 双级双力矩液压推杆制动器 |
JP2003343608A (ja) * | 2002-05-29 | 2003-12-03 | Hitachi Ltd | 電磁ブレーキ装置 |
CN2937582Y (zh) * | 2006-04-05 | 2007-08-22 | 长沙三占惯性制动有限公司 | 用于制动器的变力推动器 |
CN101086283A (zh) * | 2006-06-05 | 2007-12-12 | 谢兴云 | 制动器用推动器 |
CN101319690A (zh) * | 2007-06-08 | 2008-12-10 | 谢兴云 | 用于制动器的变力推动器 |
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