WO2013102343A1 - 挖掘装载机装载端正转八连杆工作装置 - Google Patents

挖掘装载机装载端正转八连杆工作装置 Download PDF

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Publication number
WO2013102343A1
WO2013102343A1 PCT/CN2012/078084 CN2012078084W WO2013102343A1 WO 2013102343 A1 WO2013102343 A1 WO 2013102343A1 CN 2012078084 W CN2012078084 W CN 2012078084W WO 2013102343 A1 WO2013102343 A1 WO 2013102343A1
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WO
WIPO (PCT)
Prior art keywords
boom
point
bucket
hinged
rocker
Prior art date
Application number
PCT/CN2012/078084
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English (en)
French (fr)
Inventor
刘寅
申硕
蓝强
Original Assignee
江苏柳工机械有限公司
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Filing date
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Application filed by 江苏柳工机械有限公司 filed Critical 江苏柳工机械有限公司
Priority to BR112014014510A priority Critical patent/BR112014014510A2/pt
Priority to US14/367,189 priority patent/US9091043B2/en
Priority to EP12864515.7A priority patent/EP2775039A4/en
Priority to RU2014126243/03A priority patent/RU2570871C1/ru
Publication of WO2013102343A1 publication Critical patent/WO2013102343A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • E02F3/3408—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism of the parallelogram-type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • E02F3/3411—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism of the Z-type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • 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
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/46—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions
    • F16H21/54—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions for conveying or interconverting oscillating or reciprocating motions

Definitions

  • the present invention relates to a working device for a backhoe loader, and more particularly to a working device for a forward-rotating eight-link of a loading end of a backhoe loader, which belongs to the technical field of engineering machinery.
  • the front and rear ends of the backhoe loader are the loading end and the excavation end respectively, and the same machine can realize the loading and excavating functions, so it is commonly called “two heads busy”.
  • the current excavating loader In order to improve the lifting performance of the loading end, the current excavating loader generally adopts a forward-rotating eight-link or a forward-rotating six-link mechanism, and comprehensively considers the balance of the loading end lifting.
  • Most manufacturers will choose a forward-rotating eight-link structure.
  • the bucket cylinder, the bucket rocker and the bucket lever are hinged at the same point, but the three-bar hinged working device at the same point is equal in engine power.
  • the digging force is relatively small.
  • the size ratio of the rods of the working device of the forward eight-link structure and the position of the hinge point are different, so the unloading height and the unloading distance and the digging force are different.
  • Object of the Invention In order to optimize the performance of a digging loader working end working device, obtain a reasonable unloading height and unloading distance, and obtain a larger loading end excavation force with the same engine output power, the present invention provides a A loading and unloading eight-link working device with a better loading performance with twelve optimized hinge points.
  • a front-end eight-link working device for a loader of a backhoe loader including a front frame, a boom, a bucket cylinder, a boom cylinder, a swing rocker arm, a bucket pull rod, a boom pull rod, and a moving An arm rocker and a bucket;
  • the frame is respectively hinged to the A point at one end of the boom, and is hinged to the C point at one end of the boom link, and is hinged to the E point at one end of the boom cylinder, and the other end of the boom and the bucket Hinged to point B, the other end of the boom link is hinged to the point D at one end of the boom, and the other end of the boom is hinged to the point F in the middle of the boom;
  • the middle and the boom of the boom Hinged to point G, G point is located between two points A and F;
  • the other end of the boom rocker is hinged to the H point at one end of the bucket cylinder, and the other end of the bucket cylinder is hinged to
  • the other end of the swing rocker arm and the bucket are hinged at point J; the two ends of the bucket pull rod are respectively hinged to the swing arm and the boom at two points K and L, and the point is located between points I and J.
  • connection of each hinge point is simplified into an eight-bar linkage mechanism: the connection between the hinge points A and B on the front frame constitutes a rod AB, and the connection between the hinge points C and D at both ends of the boom rod
  • the line constitutes the rod two CD
  • the connection between the two hinge points E and F on the boom cylinder constitutes the rod EF
  • the hinge point between the two ends of the boom rocker 1 constitutes the rod EF
  • the line between the H constitutes the rod four DH
  • the connection between the hinge points H and I at both ends of the bucket cylinder constitutes the rod five HI
  • the connection between the hinge points I and J at both ends of the bucket rocker arm constitutes the rod six IJ
  • the hinge point at both ends of the bucket rod L
  • the connection between the two constitutes the rod seven KL
  • the connection of the two hinge points B and J on the bucket constitutes the rod eight BJ
  • the rod one to the rod eight constitute a forward
  • the double-plate structure of the bucket rod is respectively located on the inner and outer sides of the boom and the swing arm of the bucket.
  • the forward-rotating eight-bar linkage mechanism enables the loading end working device to obtain a larger digging force under the same engine power, so that the distribution of the bridge load is more reasonable, and the work efficiency and operation are improved. Balance.
  • FIG. 1 is a schematic structural view of a piston rod of a boom cylinder and a rotary cylinder in a retracted position according to the present invention
  • FIG. 2 is a structural schematic view showing the piston rod of the boom cylinder and the rotary cylinder of the present invention in an extended position.
  • a loading end forward rotation eight-link working device of a backhoe loader includes a front frame 1, a boom 2, a rotary cylinder 3, a boom cylinder 4, a swing rocker arm 5, a bucket pull rod 6, a boom pull rod 7, a boom rocker 8 and a bucket 9; wherein: the frame 1 is hinged to the arm 2 end at A The point and the boom pull rod 7 are hinged at point C, and the end of the boom cylinder 4 is hinged at point E.
  • the other end of the boom 2 is hinged to the bucket 9 at point B, and the other end of the boom rod 7 is
  • the boom rocker 8 is hinged at point D, and the other end of the boom cylinder 4 is hinged to the point F of the middle of the boom 2; the middle of the boom rocker 8 and the boom 2 are hinged to the G point, G point Located between two points A and F; the other end of the boom rocker 8 is hinged to the H point at the end of the bucket cylinder 3, and the other end of the bucket cylinder 3 is hinged to the I point of the bucket rocker arm at point I.
  • the other end of the bucket arm 5 is hinged to the point J at the point J; the two ends of the bucket rod 6 are respectively hinged to the swing arm 5 and the boom 2 at two points K and L, and the points are located at I, J.
  • the point L is located between the points F and B; the double-plate structure is located on the inner and outer sides of the boom 2 and the swing arm 5 respectively; the connection of each hinge point is simplified into an eight-bar linkage mechanism:
  • the connection between the hinge points A and B on the front frame 1 constitutes a rod AB, and the connection between the hinge points C and D at both ends of the boom rod 7 constitutes the rod 2 CD, and the two hinge points on the boom cylinder 4
  • the connection between E and F constitutes the rod EF, and the connection between the hinge points D and H at both ends of the boom rocker 8 constitutes a rod DH, and the connection between the hinge points H and I at both ends of the bucket cylinder 3
  • the line constitutes the rod HI, between the hinge points I and J at both
  • the forward-rotating eight-bar linkage mechanism enables the loading-end working device to obtain a larger digging force under the same engine power, which makes the bridge load distribution of the whole machine more reasonable, and improves work efficiency and work balance.

Abstract

一种挖掘装载机装载端正转八连杆工作装置，包括前车架（1）、动臂（2）、转斗油缸（3）、动臂油缸（4）、转斗摇臂（5）、转斗拉杆（6）、动臂拉杆（7）、动臂摇杆（8）和铲斗（9）。正转八连杆机构使得装载端工作装置在发动机功率相同的情况下能够获得更大的掘起力，整机桥荷分配更加合理。

Description

挖掘装载机装载端正转八连杆工作装置 技术领域
[0001] 本发明涉及一种挖掘装载机的工作装置， 特别是一种挖掘装载机装载端正转八连杆 工作装置， 属于工程机械技术领域。
背景技术
[0002] 挖掘装载机前后端分别为装载端和挖掘端， 同样一台整机可以实现装载和挖掘功 能， 因此俗称为 "两头忙"。
[0003] 目前的挖掘装载机为了提高装载端的提升性能一般都会采用正转八连杆或正转六连 杆机构， 综合考虑装载端提升的平衡性多数厂家会选择正转八连杆结构。 一般正转八连杆结 构会有十一个铰接点， 转斗油缸、 转斗摇杆和转斗拉杆共同铰接于同一点， 但是这种三杆铰 接于同一点的工作装置在发动机功率相等的情况下掘起力相对较小。 正转八连杆结构的工作 装置的各杆的尺寸比例和铰接点位置各不相同， 因此会导致卸载高度和卸载距离以及掘起力 各不相同。
发明内容
[0004] 发明目的： 为了优化挖掘装载机挖掘端工作装置的性能， 获得合理的卸载高度和卸 载距离， 并且在发动机输出功率相同的情况下获得更大的装载端掘起力， 本发明提供一种具 有十二个经过优化设计的铰接点的装载性能更优的挖掘装载机装载端正转八连杆工作装置。
[0005] 技术方案： 一种挖掘装载机装载端正转八连杆工作装置， 包括前车架、 动臂、 转斗 油缸、 动臂油缸、 转斗摇臂、 转斗拉杆、 动臂拉杆、 动臂摇杆和铲斗； 所述车架分别与动臂 一端铰接于 A点、 与动臂拉杆一端铰接于 C点， 与动臂油缸一端铰接于 E点， 所述动臂另 一端与铲斗铰接于 B 点， 所述动臂拉杆另一端与动臂摇杆一端铰接于 D点， 所述动臂油缸 另一端铰接于动臂中部的 F点； 所述动臂摇杆的中部与动臂铰接于 G点， G点位于 A 、 F 两点之间； 所述动臂摇杆另一端与转斗油缸一端铰接于 H 点， 转斗油缸另一端与转斗摇臂 一端铰接于 I点， 转斗摇臂另一端与铲斗铰接于 J点； 所述转斗拉杆两端分别与转斗摇臂和 动臂铰接于 K、 L两点， 所述 Κ点位于 I、 J点之间， 所述 L点位于 F、 B点之间； 所述正转 八连杆机构的点位关系如下： 令基准长度为 1， 贝 ij IK=1， 0.9<AC<1.2， 3.4<AG<3.8， 2<GH<2.4 , 6.2<GL<6.8 , 2.2<KL<2.5 , 2.8<KJ<3.2 , 1.6<BJ<1.9 , 2.2<BL<2.6 , 1.2<DG<1.5， HI 伸縮长度在 5.04 到 9.3 之间， EF 伸縮长度在 5.03 到 8.9 之间。 其中 AC=1.03， AG=3.6， GH=2.24， GL=6.52， KL=2.35， KJ=2.93， BJ=1.75， BL=2.43， DG=1.31。
[0006] 将各铰接点的连线简化成八连杆机构： 前车架上铰接点 A和 B之间的连线构成杆一 AB， 动臂拉杆两端的铰接点 C、 D之间的连线构成杆二 CD， 动臂油缸上的两铰接点 E、 F 之间的连线构成杆三 EF， 动臂摇杆两端的铰接点1)、 H之间的连线构成杆四 DH， 转斗油缸 两端的铰接点 H、 I之间的连线构成杆五 HI， 转斗摇臂两端的铰接点 I、 J之间的连线构成杆 六 IJ， 转斗拉杆两端的铰接点 、 L之间的连线构成杆七 KL， 铲斗上的两个铰接点 B、 J的 连线构成杆八 BJ， 杆一至杆八构成了正转八连杆机构。 杆六 IJ以 K点为支点形成了杠杆原 理， 增加了本工作装置的掘起力。
[0007] 为了提高杆六 IJ 工作的稳定性， 所述转斗拉杆为双板结构分别位于动臂和转斗摇臂 内外两侧。
[0008] 有益效果： 本正转八连杆机构使得装载端工作装置在发动机功率相同的情况下能够 获得更大的掘起力， 使得整机桥荷分配比较更加合理， 提高了作业效率和作业平衡性。
附图说明
[0009] 图 1为本发明动臂油缸和转头油缸的活塞杆处于收縮位置的结构示意图；
图 2为本发明动臂油缸和转头油缸的活塞杆处于伸展位置的结构示意图。
具体实施方式
[0010] 下面结合附图和实施例对本发明作进一步说明， 如图所示， 一种挖掘装载机装载端 正转八连杆工作装置， 包括前车架 1、 动臂 2、 转斗油缸 3、 动臂油缸 4、 转斗摇臂 5、 转斗 拉杆 6、 动臂拉杆 7、 动臂摇杆 8和铲斗 9; 其特征在于： 所述车架 1分别与动臂 2—端铰 接于 A点、 与动臂拉杆 7—端铰接于 C点， 与动臂油缸 4一端铰接于 E点， 所述动臂 2另 一端与铲斗 9铰接于 B点， 所述动臂拉杆 7另一端与动臂摇杆 8—端铰接于 D点， 所述动 臂油缸 4另一端铰接于动臂 2中部的 F点； 所述动臂摇杆 8的中部与动臂 2铰接于 G点， G 点位于 A 、 F两点之间； 所述动臂摇杆 8另一端与转斗油缸 3—端铰接于 H点， 转斗油缸 3另一端与转斗摇臂 5—端铰接于 I点， 转斗摇臂 5另一端与铲斗 9铰接于 J点； 所述转斗 拉杆 6两端分别与转斗摇臂 5和动臂 2铰接于 K、 L两点， 所述 Κ点位于 I、 J点之间， 所 述 L点位于 F、 B点之间； 所述转斗拉杆 6为双板结构分别位于动臂 2和转斗摇臂 5内外两 侧； 将各铰接点的连线简化成八连杆机构： 前车架 1上铰接点 A和 B之间的连线构成杆一 AB， 动臂拉杆 7两端的铰接点 C、 D之间的连线构成杆二 CD， 动臂油缸 4上的两铰接点 E、 F之间的连线构成杆三 EF， 动臂摇杆 8两端的铰接点 D、 H之间的连线构成杆四 DH， 转斗油缸 3两端的铰接点 H、 I之间的连线构成杆五 HI， 转斗摇臂 5两端的铰接点 I、 J之间 的连线构成杆六 IJ， 转斗拉杆 6两端的铰接点 K、 L之间的连线构成杆七 KL， 铲斗 9上的 两个铰接点 B、 J的连线构成杆八 BJ， 杆一至杆八构成了正转八连杆机构。 杆六 IJ以 K点 为支点形成了杠杆原理， 增加了本工作装置的掘起力。
[0011] 所述正转八连杆机构的点位关系如下： 令基准长度为 1， 贝 IJ IK=1， 0.9<AC<1.2， 3.4<AG<3.8 ， 2<GH<2.4 ， 6.2<GL<6.8 ， 2.2<KL<2.5 ， 2.8<KJ<3.2 ， 1.6<BJ<1.9 ， 2.2<BL<2.6， 1.2<DG<1.5, HI伸縮长度在 5.04到 9.3之间， EF伸縮长度在 5.03到 8.9之 间。 其中 AC=1.03， AG=3.6， GH=2.24， GL=6.52， KL=2.35， KJ=2.93， BJ=1.75， BL=2.43， DG=1.31时是最佳方案。
[0012] 本正转八连杆机构使得装载端工作装置在发动机功率相同的情况下能够获得更大的 掘起力， 使得整机桥荷分配比较更加合理， 提高了作业效率和作业平衡性。

Claims

WO 2013/102343 权 利 要 求 书 PCT/CN2012/078084
1. 一种挖掘装载机装载端正转八连杆工作装置， 包括前车架 （1 )、 动臂 （2)、 转斗油缸
(3 )、 动臂油缸 （4)、 转斗摇臂 （5 )、 转斗拉杆 （6)、 动臂拉杆 （7 )、 动臂摇杆 （8 ) 和铲 斗 （9); 其特征在于： 所述车架 （1 ) 分别与动臂 （2) —端铰接于 A点、 与动臂拉杆 （7) 一端铰接于 C点， 与动臂油缸 （4) 一端铰接于 E点， 所述动臂 （2) 另一端与铲斗 （9) 铰 接于 B 点， 所述动臂拉杆 （7 ) 另一端与动臂摇杆 （8 ) —端铰接于 D 点， 所述动臂油缸
(4) 另一端铰接于动臂 （2) 中部的 F点； 所述动臂摇杆 （8) 的中部与动臂 （2) 铰接于 G 点， G 点位于 A 、 F两点之间； 所述动臂摇杆 （8) 另一端与转斗油缸 （3) —端铰接于 H 点， 转斗油缸 （3) 另一端与转斗摇臂 （5) —端铰接于 I 点， 转斗摇臂 （5 ) 另一端与铲斗
(9) 铰接于 J 点； 所述转斗拉杆 （6) 两端分别与转斗摇臂 （5) 和动臂 （2) 铰接于 K、 L 两点， 所述 Κ点位于 I、 J点之间， 所述 L点位于 F、 B点之间； 所述正转八连杆机构的点 位关系如下： 令基准长度为 1， 贝 lj IK=1， 0.9<AC<1.2， 3.4<AG<3.8， 2<GH<2.4， 6.2<GL<6.8, 2.2<KL<2.5, 2.8<KJ<3.2, 1.6<BJ<1.9, 2.2<BL<2.6, 1.2<DG<1.5, HI 伸縮长 度在 5.04到 9.3之间， EF伸縮长度在 5.03到 8.9之间。
2. 如权利要求 1 所述的挖掘装载机装载端正转八连杆工作装置， 其特征在于： 其中 AC=1.03 , AG=3.6 , GH=2.24 , GL=6.52 , KL=2.35 , KJ=2.93 , BJ=1.75 , BL=2.43 , DG=1.31。
3. 如权利要求 1 或 2所述的挖掘装载机装载端正转八连杆工作装置， 其特征在于： 所述转 斗拉杆 （6) 为双板结构分别位于动臂 （2) 和转斗摇臂 （5) 内外两侧。
PCT/CN2012/078084 2012-01-04 2012-07-03 挖掘装载机装载端正转八连杆工作装置 WO2013102343A1 (zh)

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US14/367,189 US9091043B2 (en) 2012-01-04 2012-07-03 Forward eight-bar linkage working device for loading end of a backhoe loader
EP12864515.7A EP2775039A4 (en) 2012-01-04 2012-07-03 CONTROL DEVICE WITH EIGHT ROTATION LINKS BEFORE THE LOADING END OF A LOADER EXCAVATOR
RU2014126243/03A RU2570871C1 (ru) 2012-01-04 2012-07-03 Рабочий орган переднего восьмизвенного механизма для погрузочной стороны экскаваторной погрузочной машины

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