WO2011075979A1 - 一种工程机械及其多路同步润滑装置 - Google Patents

一种工程机械及其多路同步润滑装置 Download PDF

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Publication number
WO2011075979A1
WO2011075979A1 PCT/CN2010/073750 CN2010073750W WO2011075979A1 WO 2011075979 A1 WO2011075979 A1 WO 2011075979A1 CN 2010073750 W CN2010073750 W CN 2010073750W WO 2011075979 A1 WO2011075979 A1 WO 2011075979A1
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Prior art keywords
grease
piston chamber
oil
sealing body
cavity
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PCT/CN2010/073750
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English (en)
French (fr)
Inventor
高扬
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湖南三一智能控制设备有限公司
三一重工股份有限公司
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Publication of WO2011075979A1 publication Critical patent/WO2011075979A1/zh

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    • 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
    • F16NLUBRICATING
    • F16N25/00Distributing equipment with or without proportioning devices
    • F16N25/02Distributing equipment with or without proportioning devices with reciprocating distributing slide valve

Definitions

  • the invention relates to the field of engineering machinery, in particular to a multi-channel synchronous lubrication device.
  • the invention also relates to a construction machine comprising the above-described multi-channel synchronous lubrication device. Background technique
  • the following is a typical lubrication device using a concrete pump as an example.
  • FIG. 1 is a schematic diagram of a typical lubricating device for a concrete pump in the prior art.
  • the lubrication device of the concrete pump includes a bi-directional grease pump
  • the left rodless chamber and the right rodless chamber of the grease pump 13 are respectively connected to the external oil passage through the oil pipe, and the left rod chamber and the right rod chamber are respectively communicated with the grease tank 11 through the oil pipe, and the grease is in the grease
  • a grease filter 12 is disposed between the tank 11 and the grease pump 13; the left rod chamber communicates with the left inlet port of the two-way valve 17, and one end of the left inlet port passes through the left check valve in the two-way valve 17 and is left
  • the regulating valve is in communication with the other end communicating with the first lubrication point 141 on the delivery cylinder and providing grease to the first lubrication point 141; correspondingly, the right rod cavity is in communication with the right inlet port of the two-way valve 17, One end of the right inlet port passes through the right one-way valve in the two-way valve 17 and communicates with the right regulating valve, and the other end communicates with the second lubrication point 142 on the delivery cylinder and supplies grease to the second lubrication
  • the direction of the arrow in the figure is the direction in which the grease flows into the grease pump 13.
  • the hydraulic oil drives the piston of the grease pump 13 to move to the right, the volume of the left rod cavity is reduced, and the grease in the left rod chamber is pressed to the left inlet port of the two-way valve 17, and passes through the left inlet port.
  • the hydraulic oil drives the piston of the grease pump 13 to move to the left, the grease pump 13 supplies the grease to the second lubrication point 142.
  • the above lubricating device is capable of providing lubrication according to the lubrication conditions of two different lubrication points on the delivery cylinder.
  • the diameter of the delivery cylinders also increases. Therefore, the above-mentioned lubrication devices that can only intermittently lubricate the two lubrication points cannot meet the lubrication requirements. , Multi-point simultaneous lubrication cannot be achieved.
  • FIG. 2 is a schematic structural view of a multi-channel synchronous lubrication method in the prior art.
  • the lubrication of the grease is generally achieved by installing the three-way joint 10 on the lubrication pipe.
  • Lubrication of the first lubricating point 141 and the second lubricating point 142 on the conveying rainbow is achieved by a three-way joint 10 provided on the main oil passage.
  • the lubrication point diverted through the three-way joint 10 inevitably has a pressure difference in the work, that is, the resistance between the plurality of lubrication points after the split and the oil inlet is different, obviously, when a pressure difference occurs, The grease will flow to a path with less resistance, so that it is impossible to achieve effective simultaneous lubrication at each point.
  • the present invention provides a multi-way synchronous lubrication device including a grease pump that alternately supplies oil to or from a valve body assembly through a first port and a second port, and a grease tank for storing grease;
  • the valve body assembly includes at least two grease distribution mechanisms that are connected in parallel with each other and have the same structural dimensions of the internal cavity, and each grease distribution mechanism is provided with synchronous lubrication output to different lubrication points.
  • the oil outlet is provided.
  • each of the grease distribution mechanisms has a first piston chamber and a second piston chamber, two The first passage is adjacent to the first end surface and the second passage adjacent to the second end surface; the second piston chamber has a first oil outlet and a second oil outlet; the first oil port and the second oil port and the second port a piston cavity is respectively connected to the first end surface and the second end surface;
  • the first piston disposed in the first piston chamber includes a sealing body, and a first liquid guiding column and a second liquid guiding column respectively located at both ends of the sealing body and having an outer diameter smaller than the sealing body;
  • the second piston disposed in the second piston chamber includes a first sealing body, a second sealing body and a middle sealing body, and the first sealing body and the middle sealing body have a first connecting rod, the second sealing body and the middle sealing body Having a second link therebetween;
  • the opening of the first passage on the first piston chamber is smaller than the axial length of the first piston rod, and the opening of the first passage in the second piston chamber and the second piston chamber
  • the distance of the first end surface is greater than the axial length of the first sealing body;
  • the distance between the opening of the second passage in the first piston chamber and the second end surface of the first piston chamber is smaller than the axial length of the second liquid guiding column, and
  • the distance between the opening of the second passage on the second piston chamber and the second end surface of the second piston chamber is greater than the axial length of the second sealing body;
  • the distance between the first oil outlet and the first end surface of the second piston chamber is greater than the axial length of the first sealing body, which is smaller than the sum of the axial lengths of the first sealing body and the first connecting rod; the second oil outlet and the first oil outlet
  • the distance between the second end faces of the two piston chambers is greater than the axial length of the second sealing body, and is smaller than the sum of the axial lengths of the second sealing body and the second connecting rod.
  • the number of the grease distribution mechanisms is at least three, and the first oil outlet and the second oil outlet of at least one of the grease distribution mechanisms are connected through a communication oil passage, and the communication oil passage Open with a circulation outlet.
  • the grease pump comprises a first cavity and a second cavity disposed coaxially, and the outer ends of the two cavities respectively have a power port;
  • a first plunger disposed in the first cavity and a second plunger disposed in the second cavity are connected by a link of a suitable length;
  • the first oil port is opened at an inner end of the first cavity, and the first oil inlet opening on the first cavity is located outside the first oil port; the second oil Opening a port at an inner end of the second cavity, and a second oil inlet opening on the second cavity is located at the second port a distance between the first oil inlet and an outer end surface of the first cavity is greater than an axial length of the first plunger; a distance between the second oil inlet and an outer end surface of the second cavity Greater than the axial length of the second plunger.
  • the grease pump and the valve body assembly have an integral structure.
  • the grease pump and the valve body assembly have a split structure.
  • each grease distribution mechanism in the valve body assembly has a split structure between them.
  • the invention also provides a construction machine comprising the multi-way synchronous lubrication device of any of the above.
  • the multi-way synchronous lubrication device provides lubrication to the moving parts of the concrete transfer pump.
  • the multi-channel synchronous lubricating device comprises a grease pump which alternately supplies oil to or from the valve body assembly through the first port and the second port, and a grease for storing the grease
  • the valve body assembly includes at least two grease distribution mechanisms that are connected in parallel with each other and have the same structural dimensions inside the cavity, each of the grease distribution mechanisms has an oil outlet, so that each of the grease distribution mechanisms passes through the respective The oil outlet outputs the lubricating oil synchronously to different lubrication points. Since the configurations of the grease distributing mechanisms are the same, the greases of the respective grease distributing mechanisms are pushed out through the corresponding ones of the outlets, and the difference between the volume of the first piston chamber and the first piston is achieved. Simultaneous quantitative lubrication of multiple lubrication points improves the lubrication of multi-point synchronous lubrication devices.
  • the number of the grease distribution mechanisms provided by the present invention is at least three, and the first oil outlet and the second oil outlet of at least one of the grease distribution mechanisms are connected through the communication oil passage. , and the circulating oil outlet is opened on the connecting oil passage.
  • the first oil outlet is oiled or the second oil outlet is oiled, the grease flowing out of the oil outlet enters the communication oil passage, and flows to the lubrication point that needs continuous lubrication through the circulating oil outlet on the communication oil passage.
  • the specified lubrication points that require continuous lubrication can be continuously lubricated by the circulating piston group, thereby further improving the lubrication effect of the device and thereby increasing the service life of the construction machine.
  • 1 is a schematic view showing the principle of a typical lubricating device for a concrete pump in the prior art
  • 2 is a schematic structural view of a multi-channel synchronous lubrication method in the prior art
  • FIG. 3 is a schematic diagram of the principle of the multi-channel synchronous lubrication device provided by the present invention.
  • FIG. 4 is a schematic structural view of a specific embodiment of a multi-channel synchronous lubricating device provided by the present invention.
  • Figure 5 is an enlarged plan view showing a structure of a grease distribution mechanism of a multi-channel synchronous lubricating device according to the present invention
  • Fig. 6 is a schematic view showing the structure of another embodiment of the multi-way synchronous lubricating device provided by the present invention. detailed description
  • the core of the invention is to provide a multi-channel synchronous lubrication device, which can better realize the synchronous quantitative lubrication of multiple lubrication points on the construction machine, thereby having better lubrication effect; another core of the invention is to provide a A construction machine including the above lubricating device.
  • FIG. 3 is a schematic diagram of the principle of the multi-channel synchronous lubrication device provided by the present invention
  • FIG. 4 is a schematic structural view of a multi-channel synchronous lubrication device according to the present invention
  • the multi-channel synchronous lubrication device comprises a grease pump 2 (labeled in FIG. 4) and a valve body assembly; the grease pump 2 has a first side adjacent to the valve body assembly.
  • the second port 27 returns oil from the valve body assembly
  • the first port 26 returns oil from the valve body assembly
  • the second port 27 supplies oil to the valve body assembly, and the two ports alternately supply Oil working and oil returning work
  • the above valve body assembly comprises at least two grease distributing mechanisms 3 of the same structural size, each grease distributing mechanism 3 has a first piston chamber 31 and a second piston chamber 32, and the first piston chamber 31 and the second piston chamber 32 communicate with the first passage 331 adjacent to the first end surface and the second passage 332 near the second end surface;
  • the same structural dimension of the grease distribution mechanism 3 means that the structure inside the cavity of the mechanism is the same in size, and the wall thickness and the outer dimension thereof are not limited by the present specification.
  • the first piston chamber 31 and the second piston chamber 32 may be cylindrical, and of course, other shapes capable of using the function.
  • first end face C and the second plane D in FIG. 4 are both horizontal planes.
  • the two end faces are not limited to the horizontal plane, and the first end face C is specifically the first end face 311 of the first piston cavity and the second piston cavity.
  • a plane formed by the first end surface 323; correspondingly, the second end surface D is specifically a plane formed by the second end surface 312 of the first piston chamber and the second end surface 324 of the second piston chamber.
  • the first port 26 and the second port 27 communicate with each other through the first end face 323 of the second piston chamber and the second end face 324 of the second piston chamber.
  • the first piston 34 disposed in the first piston chamber 31 includes a sealing body 341, and a first liquid guiding column 342 and a second liquid guiding column 343 respectively located at both ends of the sealing body 341 and having an outer diameter smaller than the sealing body 341;
  • the sealing body 341 is specifically a geometric shape in which the shape of the radial cross section is the same as the shape of the radial cross section of the first piston chamber 31 and the outer diameter thereof is equal to the inner diameter of the first piston chamber 34.
  • a second piston is disposed in the second piston chamber 32.
  • the second piston includes a first sealing body 351, a second sealing body 352 and a middle sealing body 353.
  • the first sealing body 351 and the central sealing body 353 have a first connection.
  • the rod 354, the second sealing body 352 and the middle sealing body 353 have a second connecting rod 355; similarly to the above, the first sealing body 351, the second sealing body 352 and the intermediate sealing body 353 have a radial cross section.
  • the shape is the same as the shape of the radial section of the second piston chamber 32 and the outer diameter is equal to the inner diameter of the second piston chamber 32, and the outer diameters of the first link 354 and the second link 355 are smaller than the seals.
  • the outer diameter of the body is the same as the shape of the radial section of the second piston chamber 32 and the outer diameter is equal to the inner diameter of the second piston chamber 32, and the outer diameters of the first link 354 and the second link 355 are smaller than the seals.
  • the opening of the first passage 331 in the first piston chamber 31 is smaller than the axial length of the first piston rod 342, and the first passage 331 is on the second piston chamber 32.
  • the distance between the opening and the first end surface 323 of the second piston chamber is greater than the axial length of the first sealing body 351; the distance between the opening of the second passage 332 on the first piston chamber 31 and the second end surface 312 of the first piston chamber is less than The axial length of the second liquid guiding column 343, and the distance between the opening of the second passage 332 on the second piston chamber 32 and the second end surface 324 of the second piston chamber is greater than the axial length of the second sealing body 352;
  • each channel is in the first piston
  • the opening and closing state in the cavity 31 and the second piston chamber 32 is such that the passage near the grease inlet end (ie, the first passage 331 or the second passage 332) is gradually closed to open, and the passage away from the grease inlet end is gradually opened. To the close, the openings of the
  • the distance between the first oil outlet 321 and the first end surface 323 of the second piston chamber is greater than the first sealing body
  • the axial length of the 351 is smaller than the axial length of the first sealing body 351 and the first connecting rod 354, and the distance between the second oil outlet 322 and the second end surface 324 of the second piston chamber is greater than that of the second sealing body 352.
  • the axial length is smaller than the sum of the axial lengths of the second sealing body 352 and the second connecting rod 355; due to the oil outlet (ie, the first oil outlet 321 or the second oil outlet 322) and the end surface adjacent thereto (ie, The distance between the first end surface 323 of the second piston chamber or the second end surface 324 of the second piston chamber is greater than the axis of the side seal body (ie, the first seal body 351 or the second seal body 352 or the middle seal body 353)
  • the length to the length is less than the sum of the axial lengths of the side seals and the side links (ie, the first link 354 or the second link 355), and then the grease enters the second piston chamber 32, approaching The oil outlet of the inlet end is
  • the multi-way synchronous lubricating device provided by the present invention further includes a grease tank 1 which communicates with the grease pump 2 through the first oil inlet port 28 and the second oil inlet port 29, so as to The device supplies and stores grease.
  • the above grease tank 1 may be a frame type box having a proper volume and outer wall thickness.
  • the shape thereof is not limited to a frame type, and may be a cylindrical can body or the like.
  • the main function of the above grease tank 1 is to be able to supply and store grease for the lubricating device, and the container type device capable of achieving the above object can be used as a specific form of the grease tank 1, and the specific shape and the box material are not Should be limited by this specification.
  • the grease enters the second piston chamber 32 from the first end surface 323 of the second piston chamber or the second end surface 324 of the second piston chamber, and pushes The second piston moves toward the other end, at this time, due to the relationship between the oil outlet and the end face adjacent thereto
  • the distance is greater than the axial length of the side seal body and less than the axial length of the side seal body and the side link, and the oil outlet near the inlet end of the grease enters the second piston chamber 32. Gradually from opening to closing, and the oil outlet far from the grease inlet end is gradually closed to open.
  • the grease enters the second piston chamber.
  • the passage near the entry end of the grease is gradually closed to open, and the passage away from the entry end of the grease is gradually opened to closed.
  • the first passage 331 and the second passage 332 are at the first The opening in the piston chamber 31 is always in an open state.
  • each grease distribution mechanism 3 has the same structural size, and the discharged grease has the same volume, thereby achieving simultaneous quantitative lubrication of multiple lubrication points, thereby improving the lubrication effect of the multi-point synchronous lubrication device.
  • the number of the grease distributing mechanisms 3 provided by the present invention may be at least three, and the first oil outlet 321 of at least one of the grease distributing mechanisms 3 and The second oil outlet 322 communicates with the communication oil passage 36, and the communication oil passage 36 is provided with a circulation oil outlet 361.
  • the first oil outlet 321 is oiled or the second oil outlet 322 is oiled, the grease flowing out thereof enters the communication oil passage 36, and flows through the circulating oil outlet 361 on the communication oil passage 36 to be continuously continuous. Lubrication point for lubrication.
  • the specified lubrication points that require continuous lubrication can be continuously lubricated by the circulating piston group, thereby further improving the lubrication efficiency of the device and thereby increasing the service life of the construction machine.
  • the grease distribution mechanism 3 has a circulation oil outlet 361.
  • the specific structure of the above grease pump 2 may be as follows:
  • the grease pump 2 includes a first cavity 21 and a second cavity 22, the outer ends of the two cavities respectively having a power port; the first plunger 23 disposed in the first cavity 21 and the second cavity
  • the second plunger 24 of 22 is connected by a connecting rod 25 of a suitable length;
  • the first cavity 21 has a first oil inlet port 28 near its outer end surface and a first oil port 26 at the inner end of the first oil inlet port 28,
  • the second cavity 22 has a second oil inlet port 29 near the outer end surface thereof and a second oil port 27 located at the inner end of the second oil inlet port 29; the distance between the first oil inlet port 28 and the outer end surface of the first cavity body 21 More than the axial length of the first plunger 23, the distance between the first port 26 and the outer end surface of the first cavity 21 is greater than the axial length of the first plunger 23, which is smaller than the axial length of the first cavity 21;
  • the distance between the second oil inlet port 29 and the outer end surface of the second cavity 22 is greater than the
  • FIG. 6 is a schematic structural view of another embodiment of a multi-channel synchronous lubrication device according to the present invention.
  • the grease pump 2 and the valve body assembly of the lubricating device provided by the present invention may have a unitary structure, that is, the grease pump 2 and the valve body assembly are integrated into one casing, thus The structure of the device is more compact, smaller in size, and requires less piping after integration, which reduces the risk of leakage of the pipeline, thereby improving the reliability of the device.
  • the grease pump 2 When the grease pump 2 and the valve body assembly are integrally arranged, the grease pump 2 can be arranged side by side on the left side of the valve body assembly, and the working principle is the same as the above working principle, and will not be described herein.
  • the grease pump 2 is not limited to be disposed on the left side of the valve body assembly, and may be disposed according to factors such as the layout of the whole machine. Other parts, as long as they can meet the requirements of the two, the specific setting method should not be limited by this specification.
  • the grease pump 2 and the valve body assembly may have a split structure, that is, the grease pump 2 is composed of a pump body and an independent gland thereof, and the valve body assembly is composed of a valve body and An external independent gland.
  • the grease pump 2 and the valve body assembly can be added separately
  • the work process simplifies the machining process; at the same time, the two can be repaired and replaced separately, which simplifies the maintenance process and saves maintenance costs.
  • the above grease pump 2 is not limited to being disposed above the valve body assembly, and may be based on various factors such as actual working conditions and layout of the whole machine, so that the two have other setting modes.
  • Each of the grease distribution mechanisms 3 may have a separate structure, that is, each surface of each grease distribution mechanism 3 has a gland, so that each grease distribution mechanism 3 can be separately processed, which simplifies the processing steps; Each grease distribution mechanism 3 can be separately repaired and replaced, which simplifies the maintenance process, thereby saving maintenance costs.
  • the present invention also provides a construction machine including the above-described multi-way synchronous lubricating device.
  • the above construction machine may be a concrete transfer pump, and the multi-way synchronous lubrication device passes grease for moving parts such as a transfer cylinder.
  • the multi-way synchronous lubrication device passes grease for moving parts such as a transfer cylinder.

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Description

一种工程机械及其多路同步润滑装置
本申请要求于 2009 年 12 月 22 日提交中国专利局、 申请号为 200910259450.1、 发明名称为"一种工程机械及其多路同步润滑装置"的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及工程机械领域, 特别涉及一种多路同步润滑装置。 本发明 还涉及一种包括上述多路同步润滑装置的工程机械。 背景技术
随着我国经济建设的快速发展, 用于高楼、 立交桥等建设的大型工程 机械得到了越来越广泛的应用, 各种工程机械在使用的过程中均需要对其 运动部件进行润滑。
下面以混凝土输送泵为例介绍一种典型的润滑装置。
在混凝土输送泵的使用过程中, 为了保证其工作性能和安全性, 各相 互接触的运动部件之间, 尤其是混凝土输送缸与活塞等运动部件之间的润 滑极为重要, 因此, 在混凝土输送泵中一般均设置有润滑装置。
请参考图 1 , 图 1为现有技术中一种典型的用于混凝土输送泵的润滑 装置的原理示意图。
在该现有技术中, 混凝土输送泵的润滑装置包括双向作用的润滑脂泵
13 , 该润滑脂泵 13的左无杆腔和右无杆腔分别通过油管与外部油路连通, 其左有杆腔和右有杆腔分别通过油管与润滑脂箱 11 连通, 且在润滑脂箱 11与润滑脂泵 13之间设置有脂滤器 12;左有杆腔与双向阀 17的左进油口 连通, 该左进油口的一端通过双向阀 17 内的左单向阀并与左调节阀相连 通, 另一端与输送缸上的第一润滑点 141连通, 并为该第一润滑点 141提 供润滑脂; 相应地, 右有杆腔与双向阀 17的右进油口连通, 该右进油口的 一端通过双向阀 17内的右单向阀并与右调节阀连通,另一端与输送缸上的 第二润滑点 142连通, 并为第二润滑点 142提供润滑脂。
图中箭头方向为润滑脂流入润滑脂泵 13的方向。当液压油驱动上述润 滑脂泵 13的活塞向右运动时,左有杆腔的容积缩小, 左有杆腔中的润滑脂 被压向双向阀 17的左进油口 ,并通过左进油口的一端注入输送缸上的第一 润滑点 141 ; 具有压力的润滑脂从左进油口的另一端通过左单向阀进入左 调节阀, 当润滑脂的压力超过左调节阀的卸载压力时, 润滑脂通过左调节 阀进入润滑脂箱 11。 相应地, 当液压油驱动润滑脂泵 13 的活塞向左运动 时, 润滑脂泵 13为上述第二润滑点 142提供润滑脂, 其具体过程与上述过 程相应, 在此不再赘述。
上述润滑装置能够根据输送缸上两个不同润滑点的润滑状况提供润 滑。 但是, 随着混凝土泵的大排量级别的产品的开发和生产, 输送缸的直 径也随之增大, 因此, 上述只能对两个润滑点进行间歇润滑的润滑装置已 无法满足润滑的需要, 无法达到多点同步润滑。
请参考图 2, 图 2为现有技术中一种多路同步润滑方式的结构示意图。 为了解决大直径输送缸无法多点同步润滑的问题, 一般通过在润滑管 路上安装三通接头 10的方式实现润滑脂的分路润滑。通过设置于主油路上 的三通接头 10实现对输送虹上第一润滑点 141和第二润滑点 142的润滑。 但是, 通过三通接头 10分流的润滑点在工作中不可避免地会出现压差,也 即分流后的多个润滑点与进油口之间的阻力不同,显然地, 当出现压差时, 润滑脂会流向阻力较小的一路, 从而不能实现各点有效地同步润滑。
综上所述, 如何使较大型工程机械上多个需要同步润滑的润滑点实现 有效地同步定量润滑, 从而提高润滑效果就成为本领域的技术人员亟须解 决的问题。 发明内容
本发明的目的是提供多路同步润滑装置, 其能够较好地实现多润滑点 的同步定量润滑, 从而具有较好的润滑效果; 本发明的另一目的是提供一 种包括上述多路同步润滑装置的工程机械。
为解决上述技术问题, 本发明提供一种多路同步润滑装置, 包括通过 第一油口和第二油***替向阀体组件供油或自阀体组件回油的润滑脂泵, 以及用于储存润滑脂的润滑脂箱; 所述阀体組件包括至少两个相互并联, 且内部腔体的结构尺寸相同的润滑脂分配机构, 各润滑脂分配机构均设有 向不同的润滑点同步输出润滑油的出油口。
优选地, 各所述润滑脂分配机构均具有第一活塞腔和第二活塞腔, 两 者通过靠近第一端面的第一通道和靠近第二端面的第二通道连通; 第二活 塞腔具有第一出油口和第二出油口; 第一油口和第二油口与第二活塞腔分 别连通于所述第一端面和所述第二端面;
设于第一活塞腔中的第一活塞包括密封体, 以及分别位于密封体两端 且外径均小于密封体的第一导液柱和第二导液柱;
设于第二活塞腔中的第二活塞包括第一密封体、 第二密封体和中部密 封体, 第一密封体和中部密封体之间具有第一连杆, 第二密封体与中部密 封体之间具有第二连杆;
第一通道在第一活塞腔上的开口与第一活塞腔的第一端面的距离小于 第一导液柱的轴向长度, 且第一通道在第二活塞腔上的开口与第二活塞腔 的第一端面的距离大于第一密封体的轴向长度; 第二通道在第一活塞腔上 的开口与第一活塞腔的第二端面的距离小于第二导液柱的轴向长度, 且第 二通道在第二活塞腔上的开口与第二活塞腔的第二端面的距离大于第二密 封体的轴向长度;
第一出油口与第二活塞腔的第一端面的距离大于第一密封体的轴向长 度, 小于第一密封体与第一连杆的轴向长度之和; 第二出油口与第二活塞 腔的第二端面的距离大于第二密封体的轴向长度, 小于第二密封体与第二 连杆的轴向长度之和。
优选地, 所述润滑脂分配机构的数目至少为三个, 且至少任一所述润 滑脂分配机构的第一出油口和第二出油口通过连通油路连通, 且所述连通 油路上开设有循环出油口。
优选地, 润滑脂泵包括同轴设置的第一腔体和第二腔体, 两腔体的外 端分别具有动力油口;
设于第一腔体中的第一柱塞和设于第二腔体中的第二柱塞通过适当长 度的连杆连接;
所述第一油口开设于所述第一腔体的内端部, 且开设于所述第一腔体 上的第一进油口位于所述第一油口的外侧; 所述第二油口开设于所述第二 腔体的内端部, 且开设于所述第二腔体上的第二进油口位于所述第二油口 所述第一进油口与所述第一腔体的外端面的距离大于所述第一柱塞的 轴向长度; 所述第二进油口与所述第二腔体的外端面的距离大于所述第二 柱塞的轴向长度。
优选地, 所述润滑脂泵与所述阀体組件具有一体式结构。
优选地, 所述润滑脂泵与所述阀体组件具有分体式结构。
优选地,所述阀体组件中的各润滑脂分配机构之间具有分体式的结构。 本发明还提供一种工程机械, 包括上述任一项所述的多路同步润滑装 置。
优选地, 具体为混凝土输送泵, 所述多路同步润滑装置为所述混凝土 输送泵的运动部件提供润滑。
本发明所提供的多路同步润滑装置, 包括通过第一油口和第二油*** 替向阀体组件供油或自阀体组件回油的润滑脂泵, 以及用于储存润滑脂的 润滑脂箱; 所述阀体组件包括至少两个相互并联, 且腔体内部的结构尺寸 相同的润滑脂分配机构, 各润滑脂分配机构均具有出油口, 以便各所述润 滑脂分配机构通过各自的出油口, 向不同的润滑点同步输出润滑油。 由于 各润滑脂分配机构之间的构造相同, 则各润滑脂分配机构通过相应的任一 出口推出的润滑脂的体积相同,均为第一活塞腔的容积与第一活塞的差值, 从而实现了多润滑点的同步定量润滑, 进而提高了多点同步润滑装置的润 滑效果。
在一种优选的实施方式中, 本发明所提供的润滑脂分配机构的数目至 少为三个, 且至少任一润滑脂分配机构的第一出油口和第二出油口通过连 通油路连通, 且连通油路上开设有循环出油口。 这样, 当第一出油口出油 或者第二出油口出油时, 其流出的润滑脂均会进入连通油路, 并通过该连 通油路上的循环出油口流向需要连续润滑的润滑点; 这样, 能够通过循环 活塞組对需要连续润滑的指定润滑点进行连续润滑, 从而进一步提高了装 置的润滑效果, 进而提高了工程机械的使用寿命。 附图说明
图 1为现有技术中一种典型的用于混凝土输送泵的润滑装置的原理示 意图; 图 2为现有技术中一种多路同步润滑方式的结构示意图;
图 3为本发明所提供多路同步润滑装置的原理示意图;
图 4为本发明所提供多路同步润滑装置一种具体实施方式的结构示意 图;
图 5为本发明所提供多路同步润滑装置的润滑脂分配机构一种具体实 施方式的结构放大图;
图 6为本发明所提供多路同步润滑装置另一种具体实施方式的结构示 意图。 具体实施方式
本发明的核心是提供一种多路同步润滑装置, 其能够较好地实现工程 机械上的多润滑点的同步定量润滑, 从而具有较好的润滑效果; 本发明的 另一核心是提供一种包括上述润滑装置的工程机械。
为了使本技术领域的人员更好地理解本发明的技术方案, 下面结合附 图和具体实施方式对本发明作进一步的详细说明。
请参考图 3、 图 4以及图 5 , 图 3为本发明所提供多路同步润滑装置的 原理示意图; 图 4为本发明所提供多路同步润滑装置一种具体实施方式的 结构示意图; 图 5为本发明所提供多路同步润滑装置的润滑脂分配机构一 种具体实施方式的结构放大图。
在一种具体实施方式中,本发明所提供的多路同步润滑装置包括 润滑 脂泵 2 (标于图 4中) 和阀体组件; 该润滑脂泵 2靠近阀体组件的一侧具 有第一油口 26和第二油口 27, 且通过第一油口 26和第二油口 27交替向 阀体组件供油或自阀体组件回油, 具体地, 当第一油口 26向阀体组件供油 时, 第二油口 27 自阀体組件回油, 而当第一油口 26 自阀体组件回油时, 第二油口 27向阀体组件供油, 两油***替进行供油工作和回油工作; 上述阀体組件包括至少两个结构尺寸相同的润滑脂分配机构 3 , 各润 滑脂分配机构 3均具有第一活塞腔 31和第二活塞腔 32, 且第一活塞腔 31 和第二活塞腔 32通过靠近第一端面的第一通道 331和靠近第二端面的第二 通道 332连通; 第二活塞腔 32具有第一出油口 321和第二出油口 322, 且 两出油***替向不同的润滑点供油; 具体地, 上述第一端面为图 4所示的 C平面, 而第二端面为图 4所示的 D平面。
上述润滑脂分配机构 3的结构尺寸相同是指, 该机构的腔体内部的结 构尺寸相同, 而其壁厚以及外形尺寸不受本说明书的限制。
上述第一活塞腔 31和第二活塞腔 32可以为圓柱体, 当然也可以为其 他能够实现使用功能的形状。
显然地, 图 4中的第一端面 C和第二平面 D均为水平面, 当然, 两端 面也不局限于水平面, 第一端面 C具体为第一活塞腔的第一端面 311和第 二活塞腔的第一端面 323所组成的平面; 相应地, 第二端面 D具体为第一 活塞腔的第二端面 312和第二活塞腔的第二端面 324组成的平面。 上述第 一油口 26和第二油口 27分别通过第二活塞腔的第一端面 323和第二活塞 腔的笫二端面 324连通。
设于第一活塞腔 31 中的第一活塞 34包括密封体 341 , 以及分别位于 密封体 341两端且外径均小于密封体 341的第一导液柱 342和第二导液柱 343; 上述密封体 341具体为径向截面的形状与第一活塞腔 31的径向截面 的形状相同且其外径与第一活塞腔 34的内径相等的几何体。
第二活塞腔 32中设有第二活塞, 该第二活塞包括第一密封体 351、 第 二密封体 352和中部密封体 353 , 第一密封体 351和中部密封体 353之间 具有第一连杆 354, 第二密封体 352与中部密封体 353之间具有第二连杆 355; 与上文相似地, 上述第一密封体 351、 第二密封体 352以及中间密封 体 353均为径向截面的形状与第二活塞腔 32的径向截面的形状相同且其外 径与笫二活塞腔 32的内径相等的几何体, 而第一连杆 354和第二连杆 355 的外径均小于各密封体的外径。
第一通道 331在第一活塞腔 31上的开口与第一活塞腔的第一端面 311 的距离小于第一导液柱 342的轴向长度, 且第一通道 331在第二活塞腔 32 上的开口与第二活塞腔的第一端面 323的距离大于第一密封体 351的轴向 长度; 第二通道 332在第一活塞腔 31 上的开口与第一活塞腔的第二端面 312的距离小于第二导液柱 343的轴向长度, 且第二通道 332在第二活塞 腔 32上的开口与第二活塞腔的第二端面 324的距离大于第二密封体 352 的轴向长度; 则当润滑脂进入第二活塞腔 32的过程中,各通道在第一活塞 腔 31和第二活塞腔 32中的开口开闭状态为:靠近润滑脂进入端的通道(即 第一通道 331或第二通道 332 ) 逐渐由关闭到打开, 而远离润滑脂进入端 的通道逐渐由打开到关闭, 而第一通道 331和第二通道 332在第一活塞腔 31上的开口始终处于打开的状态。
第一出油口 321与第二活塞腔的第一端面 323的距离大于第一密封体
351的轴向长度, 小于第一密封体 351与第一连杆 354的轴向长度之和, 第二出油口 322与第二活塞腔的第二端面 324的距离大于第二密封体 352 的轴向长度, 小于第二密封体 352与第二连杆 355的轴向长度之和; 由于 出油口 (即第一出油口 321或第二出油口 322 )和与其靠近的端面 (即第 二活塞腔的第一端面 323或第二活塞腔的第二端面 324 )之间的距离大于 该侧密封体(即第一密封体 351或第二密封体 352或中部密封体 353 ) 的 轴向长度,而小于该侧密封体与该侧连杆(即第一连杆 354或第二连杆 355 ) 的轴向长度之和, 则在润滑脂进入第二活塞腔 32的过程中, 靠近其进入端 的出油口逐渐由打开到关闭, 而远离润滑脂进入端的出油口逐渐由关闭到 打开; 当第二活塞腔 32上的润滑脂进入端的通道打开后, 润滑脂通过该通 道进入第一活塞腔 31与该通道连通的一端, 从而推动第一活塞 34向第一 活塞腔 31的另一端运动, 将另一端中的润滑脂由第二活塞腔 32上打开的 出口推出。
众所周知的, 在本发明所提供的多路同步润滑装置中还包括润滑脂箱 1 , 该润滑脂箱 1通过第一进油口 28和第二进油口 29与润滑脂泵 2连通, 以便为装置提供和储存润滑脂。
上述润滑脂箱 1可以为容积和外壁厚度适当的框式箱体, 当然其形状 也不局限于框式, 也可以为圓柱形罐体等。
显然地, 上述润滑脂箱 1的主要作用是能够为润滑装置提供和储存润 滑脂,能够实现上述目的的容器类装置均可以作为润滑脂箱 1的具体形式, 而其具体形状和箱体材料不应受到本说明书的限制。
当第一油口 26或者第二油口 27向阀体组件供油时, 润滑脂自第二活 塞腔的第一端面 323或者第二活塞腔的第二端面 324进入第二活塞腔 32, 推动第二活塞向另一端运动, 此时, 由于出油口和与其靠近的端面之间的 距离大于该侧密封体的轴向长度, 而小于该侧密封体与该侧连杆的轴向长 度之和, 则在润滑脂进入第二活塞腔 32的过程中, 靠近其进入端的出油口 逐渐由打开到关闭, 而远离润滑脂进入端的出油口逐渐由关闭到打开。
同时,由于第一通道 331或者第二通道 332在第二活塞腔 32上的开口 和该活塞腔上与其靠近的端面的距离大于该侧密封体的轴向长度, 则润滑 脂进入第二活塞腔 32的过程中,靠近润滑脂进入端的通道逐渐由关闭到打 开, 而远离润滑脂进入端的通道逐渐由打开到关闭。
由于第一通道 331或第二通道 332在第一活塞腔 31上的开口和与其靠 近的端面的距离小于该侧导液柱的轴向长度, 则第一通道 331和第二通道 332在第一活塞腔 31上的开口始终处于打开的状态。
当第二活塞腔 32上的润滑脂进入端的通道打开后,润滑脂通过该通道 进入第一活塞腔 31与该通道连通的一端, 从而推动第一活塞 34向第一活 塞腔 31的另一端运动, 将另一端中的润滑脂由第二活塞腔 32上打开的出 口推出。 由于各润滑脂分配机构 3之间的构造相同, 则各润滑脂分配机构 3通过相应地任一出口推出的润滑脂的体积相同, 均为第一活塞腔 31的容 积与第一活塞 34的差值, 而各润滑脂分配机构 3的结构尺寸相同, 则排出 的润滑脂体积相同, 从而实现了多润滑点的同步定量润滑, 进而提高了多 点同步润滑装置的润滑效果。
还可以对本发明所提供的多路同步润滑装置进行进一步改进。
请继续参考图 4, 在另一种具体实施方式中, 本发明所提供的润滑脂 分配机构 3的数目可以至少为三个, 且至少任一润滑脂分配机构 3的第一 出油口 321和第二出油口 322通过连通油路 36连通, 连通油路 36上开设 有循环出油口 361。 当第一出油口 321 出油或者第二出油口 322出油时, 其流出的润滑脂均会进入连通油路 36, 并通过该连通油路 36上的循环出 油口 361流向需要连续润滑的润滑点。
这样, 能够通过循环活塞组对需要连续润滑的指定润滑点进行连续润 滑,从而进一步提高了装置的润滑效杲, 进而提高了工程机械的使用寿命。
显然地, 上述润滑脂分配机构 3的数目并不局限于两个或者三个, 在 工作条件允许的情况下, 也可以为更多个; 同样地, 也不局限于只有一組 润滑脂分配机构 3具有循环出油口 361。
上述润滑脂泵 2的具体结构可以为下文所述结构:
润滑脂泵 2包括第一腔体 21和第二腔体 22, 两腔体的外端分别具有 动力油口;设于第一腔体 21中的第一柱塞 23和设于第二腔体 22中的第二 柱塞 24通过适当长度的连杆 25连接;第一腔体 21具有靠近其外端面的第 一进油口 28和位于第一进油口 28内端的第一油口 26, 第二腔体 22具有 靠近其外端面的第二进油口 29和位于第二进油口 29内端的第二油口 27; 第一进油口 28与第一腔体 21 的外端面的距离大于第一柱塞 23的轴向长 度,第一油口 26与第一腔体 21的外端面的距离大于第一柱塞 23的轴向长 度, 小于第一腔体 21的轴向长度; 第二进油口 29与第二腔体 22的外端面 的距离大于第二柱塞 24的轴向长度,笫二油口 27与第二腔体 22的外端面 的距离大于第二柱塞 24的轴向长度, 小于第二腔体 22的轴向长度。 这样, 能够较好地为阀体组件供油, 工作效率较为稳定, 结构简单。
还可以对本发明所提供的多路同步润滑装置进行进一步改进。
请参考图 6 , 图 6为本发明所提供多路同步润滑装置另一种具体实施 方式的结构示意图。
在另一种具体实施方式中, 本发明所提供的润滑装置的润滑脂泵 2和 阀体组件可以具有一体式结构, 也即润滑脂泵 2与阀体组件集成于一个外 壳中, 这样, 使得装置的结构更加筒单, 体积较小, 且集成后所需管路较 少, 降低了管路泄露的危险性, 从而提高了装置的可靠性。
润滑脂泵 2与阀体组件一体式设置时, 可以将润滑脂泵 2并列地设置 于阀体组件的左侧, 其工作原理与上述工作原理相同, 在此不再赘述。
显然地, 当润滑脂泵 2与阀体组件以一体式的结构设置时, 也不局限 于将润滑脂泵 2设置于阀体组件的左侧, 也可以根据整机布局等因素将其 设置于其他部位, 只要能够满足二者的使用要求, 其具体设置方式不应受 本说明书的限制。
请继续参考图 4, 上述润滑脂泵 2和阀体組件可以具有分体式结构, 也即润滑脂泵 2由泵体本体及其外部的独立压盖組成, 而阀体组件由阀体 本体及其外部的独立压盖组成。 这样, 润滑脂泵 2和阀体组件可以分别加 工, 简化了加工工序; 同时, 二者能够分别维修和更换, 简化了维修过程, 从而节约了维护成本。
上述润滑脂泵 2也不局限于设置于阀体組件的上方, 也可以根据实际 工况以及整机的布局等多方面因素的综合考虑, 令二者具有其他的设置方 式。
上述各润滑脂分配机构 3之间也可以具有分体式结构, 也即各润滑脂 分配机构 3的表面分别具有压盖, 这样, 各润滑脂分配机构 3可以分别加 工, 简化了加工工序; 同时, 各润滑脂分配机构 3能够分别维修和更换, 简化了维修过程, 从而节约了维护成本。
除了上述多路同步润滑装置, 本发明还提供一种包括上述多路同步润 滑装置的工程机械。
具体地, 上述工程机械可以为混凝土输送泵, 多路同步润滑装置为其 输送缸等运动部件通过润滑脂。 该混凝土输送泵的其他各部分的结构请参 考现有技术, 在此不再赘述。
以上对本发明所提供的一种工程机械及其多路同步润滑装置进行了详 以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。 应当指 出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下, 还可以对本发明进行若干改进和修饰 , 这些改进和修饰也落入本发明权利 要求的保护范围内。

Claims

权 利 要 求
1、 一种多路同步润滑装置, 包括通过第一油口(26)和第二油口(27)交 替向阀体組件供油或自阀体组件回油的润滑脂泵 (2) , 以及用于储存润滑脂 的润滑脂箱(1); 其特征在于, 所述阀体组件包括至少两个相互并联, 且腔 体内部的结构尺寸相同的润滑脂分配机构 (3),各润滑脂分配机构 (3)均设有 向不同的润滑点同步输出润滑油的出油口。
2、 根据权利要求 1所述的多路同步润滑装置, 其特征在于, 各所述润滑脂分配机构 (3)均具有第一活塞腔 (31)和第二活塞腔 (32),两 者通过靠近第一端面的第一通道 (331)和靠近第二端面的第二通道 (332)连 通;第二活塞腔 (32)具有第一出油口(321)和第二出油口(322); 第一油口(26) 和第二油口(27)与第二活塞腔 (32)分別连通于所述第一端面和所述第二端 面;
设于第一活塞腔 (31)中的第一活塞 (34)包括密封体 (341),以及分别位于 密封体 (341 )两端且外径均小于密封体 (341)的第一导液柱 (342)和第二导液 柱 (343);
设于第二活塞腔 (32)中的第二活塞包括第一密封体 (351)、 第二密封体 (352)和中部密封体 (353) , 第一密封体 (351)和中部密封体 (353)之间具有第 一连杆 (354), 第二密封体 (352)与中部密封体 (353)之间具有第二连杆 (355); 第一通道 (331)在第一活塞腔 (31)上的开口与第一活塞腔的第一端面 (311)的距离小于第一导液柱 (342)的轴向长度,且第一通道 (331)在第二活塞 腔 (32)上的开口与第二活塞腔的第一端面 (323)的距离大于第一密封体 (351) 的轴向长度; 第二通道 (332)在第一活塞腔 (31)上的开口与第一活塞腔的第 二端面 (312)的距离小于第二导液柱 (343)的轴向长度,且第二通道 (332)在第 二活塞腔 (32)上的开口与第二活塞腔的第二端面 (324)的距离大于第二密封 体 (352)的轴向长度;
第一出油口(321)与第二活塞腔的第一端面 (323)的距离大于第一密封 体 (351 )的轴向长度, 小于第一密封体 (351)与第一连杆 (354)的轴向长度之 和; 第二出油口(322)与第二活塞腔的第二端面 (324)的距离大于第二密封体 (352)的轴向长度, 小于第二密封体 (352)与第二连杆 (355)的轴向长度之和。
3、 根据权利要求 2所述的多路同步润滑装置, 其特征在于, 所述润滑 脂分配机构 (3)的数目至少为三个,且至少任一所述润滑脂分配机构 (3)的第 一出油口(321)和第二出油口(322)通过连通油路 (36)连通, 且所述连通油路 (36)上开设有循环出油口(361)。
4、根据权利要求 1至 3任一项所述的多路同步润滑装置,其特征在于, 所述润滑脂泵 (2)包括同轴设置的第一腔体 (21)和第二腔体 (22),两腔体 的外端分别具有动力油口;
设于第一腔体 (21)中的第一柱塞 (23)和设于第二腔体 (22)中的第二柱塞 (24)通过适当长度的连杆 (25)连接;
所述第一油口(26)开设于所述第一腔体 (21)的内端部,且开设于所述第 一腔体 (21)上的第一进油口(28)位于所述第一油口(26)的外侧; 所述第二油 口(27)开设于所述第二腔体 (22)的内端部, 且开设于所述第二腔体 (22)上的 第二进油口(28)位于所述第二油口(27)的外侧;
所述第一进油口(28)与所述第一腔体 (21)的外端面的距离大于所述第 一柱塞 (23)的轴向长度; 所述第二进油口(29)与所述第二腔体 (22)的外端面 的距离大于所述第二柱塞 (24)的轴向长度。
5、 根据权利要求 4所述的多路同步润滑装置, 其特征在于, 所述润滑 脂泵 (2)与所述阀体组件具有一体式结构。
6、 根据权利要求 4所述的多路同步润滑装置, 其特征在于, 所述润滑 脂泵 (2)与所述阀体組件具有分体式结构。
7、 根据权利要求 6所述的多路同步润滑装置, 其特征在于, 所述阀体 组件中的各润滑脂分配机构 (3)之间具有分体式的结构。
8、一种工程机械, 其特征在于, 包括权利要求 1至 7任一项所述的多 路同步润滑装置。
9、根据权利要求 8所述工程机械,其特征在于,具体为混凝土输送泵, 所述多路同步润滑装置为所述混凝土输送泵的运动部件提供润滑。
PCT/CN2010/073750 2009-12-22 2010-06-10 一种工程机械及其多路同步润滑装置 WO2011075979A1 (zh)

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CN102913448B (zh) * 2012-10-29 2015-11-25 三一汽车制造有限公司 一种递进式分配器防堵方法、装置和泵送机械
CN102943951B (zh) * 2012-11-27 2014-12-24 中联重科股份有限公司 润滑装置及包括该润滑装置的混凝土机械设备
CN203757349U (zh) * 2013-08-08 2014-08-06 温州市维东润滑设备制造有限公司 液压增压润滑泵

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US4947733A (en) * 1987-11-19 1990-08-14 Honeywell Lucifer S.A. Valve subplate for alternative double-acting or single-acting operation of cylinder
CN2108217U (zh) * 1991-12-21 1992-06-24 上海市申达油泵厂 手动润滑加油分油器
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