WO2015090109A1 - Dispositif d'inclinaison variable de la fléchette, grue et procédé d'inclinaison variable de la fléchette - Google Patents

Dispositif d'inclinaison variable de la fléchette, grue et procédé d'inclinaison variable de la fléchette Download PDF

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Publication number
WO2015090109A1
WO2015090109A1 PCT/CN2014/089026 CN2014089026W WO2015090109A1 WO 2015090109 A1 WO2015090109 A1 WO 2015090109A1 CN 2014089026 W CN2014089026 W CN 2014089026W WO 2015090109 A1 WO2015090109 A1 WO 2015090109A1
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WO
WIPO (PCT)
Prior art keywords
luffing
jib
pulley
boom
pull plate
Prior art date
Application number
PCT/CN2014/089026
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English (en)
Chinese (zh)
Inventor
陈林
张晓广
韦仕持
Original Assignee
三一汽车起重机械有限公司
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Publication date
Application filed by 三一汽车起重机械有限公司 filed Critical 三一汽车起重机械有限公司
Publication of WO2015090109A1 publication Critical patent/WO2015090109A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/66—Outer or upper end constructions

Definitions

  • the present disclosure relates to the field of crane technology, and in particular to a jib luffing device, a crane and a jib framing method.
  • Cranes typically include a main boom and a secondary boom.
  • the secondary boom generally has a variable amplitude function.
  • the mechanical luffing is an artificial initial setting of the jib of the jib, and the main jib can only perform the manual luffing operation of the sub-boom after being retracted.
  • the advantage of this luffing method is that the cost is lower, but the problem is that the operation is troublesome.
  • the automatic variable width is automatically adjusted by the hydraulic cylinder disposed between the jib fixed truss arm and the variable truss arm. The advantage is that the operation is convenient, labor-saving and time-saving, but the problem is high cost.
  • the present disclosure proposes a jib luffing device, a crane and a jib luffing method to facilitate the luffing operation of the sub-crane arm and reduce the cost.
  • the present disclosure discloses a jib luffing device for a luffing operation of a crane jib, comprising: a fixed truss arm of the jib, a jib arm of the jib, and a luffing pulley mechanism; Wherein the fixed truss arm is disposed at a head of the crane main boom; the variator truss arm is hinged with the fixed truss arm; and the variator pulley mechanism includes a first sliding hinged with the fixed truss arm a wheel, and a second pulley hingedly coupled to the yoke arm; when the jib is subjected to a slewing operation using the slewing pulley mechanism, the slewing hoisting wire is wound around the slewing pulley mechanism On the first pulley and the second pulley.
  • variable hoisting wire rope is a main hoisting wire rope or a sub-winding steel wire rope.
  • the jib lapping device further includes: a sprocket assembly; the sprocket assembly includes a over sprocket and a sprocket; the strop is hinged to the strop The variable hoisting wire rope is wound onto the slewing pulley mechanism via the sprocket wheel.
  • the over-the-rope carrier includes a first carrier body and a second carrier body, and the second carrier body is coupled to the middle of the first carrier body And a certain angle between the first wheel frame body and the second wheel frame body.
  • the first pulley includes a plurality of first wheel bodies disposed side by side
  • the second pulley includes a plurality of second wheel bodies disposed side by side; the first wheel body and the second wheel The axes of the bodies are parallel.
  • the jib luffing device further includes a limiting unit disposed on both sides of the slewing pulley mechanism and configured to mechanically limit the limit position of the auxiliary jib.
  • the limiting unit in the jib luffing device is a limit pull plate assembly.
  • the limit pull plate assembly includes a first pull plate and a second pull plate, and the first pull plate is slidable relative to the second pull plate; Changing the amplitude of the auxiliary boom relative to the sliding of the second pulling plate, and after the auxiliary lifting arm reaches a given position, connecting the first pulling by pin positioning a plate and the second pull plate.
  • the present disclosure also discloses a crane provided with the jib luffing device of any of the above.
  • the present disclosure also discloses a jib amplitude sizing method, which is based on the above-described jib luffing device, and performs a sub-boom sag action by retracting and displacing the hoisting wire rope.
  • FIG. 1 is a schematic structural view of an embodiment of a secondary crane arm luffing device in the present disclosure
  • Figure 2 is a perspective view showing the embodiment of the auxiliary crane arm luffing device shown in Figure 1;
  • Fig. 3 is a schematic view showing the state of the sub-crane arm in a variable amplitude state in the case of employing the embodiment of the sub-crane arm luffing device of the present disclosure.
  • the jib luffing device of the present embodiment is used for the slewing operation of the sub-crane arm 10, and includes a fixed truss arm 7A of the jib, a yoke arm 7B of the jib, and a slewing pulley mechanism 11.
  • the fixed truss arm 7A is disposed on the head of the crane main boom, and the variable truss arm 7B is hinged to the fixed truss arm 7A through the pin; the first pulley and the second pulley in the variator pulley mechanism 11 are respectively fixed to the truss
  • the arm 7A is hinged to the yoke arm 7B; when the jib mechanism 10 is used for the slewing operation of the sub jib 10, the swelled hoisting rope 2 is wound around the slewing pulley mechanism.
  • the variable amplitude hoisting wire rope 2 may be a main hoisting wire rope or a secondary hoisting wire rope. As shown in FIG. 1, when the auxiliary boom 10 is in the auxiliary state, the idle hoisting wire rope 2 is used to wind the rope and provide the auxiliary power of the auxiliary boom 10, and the hoisting wire rope 1 is hoisted. .
  • the luffing pulley mechanism 11 includes: a first pulley and a second pulley disposed in parallel, each set of pulleys including a single or a plurality of variable amplitude pulleys, wherein the first pulley is hinged to the fixed truss arm 7A, the second pulley Hinged to the yoke arm 7B.
  • the first pulley comprises a plurality of first wheel bodies arranged side by side (ie, the axes of the respective first wheel bodies coincide), and the second pulley comprises a plurality of second wheel bodies arranged side by side (ie, the second wheel bodies of the respective second wheel bodies)
  • the axis is coincident
  • the axes of the first wheel body and the second wheel body are parallel
  • the variable amplitude hoisting wire rope 2 is sequentially wound around each of the first wheel body and the second wheel body.
  • the first pulley, the second pulley, and the variable hoisting rope 2 correspond to the formation of the pulley block, and by providing the number of the first wheel bodies and the number of the second wheel bodies, different labor-saving magnifications can be realized.
  • the jib lapping device further includes a over sheave assembly; the over sheave assembly includes a over sheave 8 and a over sheave 9; the over sheave 9 is disposed on the over sheave 8;
  • the wire rope 2 is wound around the first pulley and the second pulley of the luffing pulley of the luffing pulley mechanism 11 via the sheave 9 .
  • the cross-rope frame 8 may be in a herringbone shape, that is, the over-the-rope frame comprises a first wheel frame body and a second wheel frame body, and the second wheel frame body is connected to the middle of the first wheel frame body, and the two are fixed between the two Angle.
  • the jib luffing device further includes a limiting unit disposed on both sides of the luffing pulley mechanism and configured to mechanically limit the limit position of the sub-boom 10, ie
  • the jib mechanical luffing mechanism known in the prior art eliminates the positioning of the pin at 20° position so that the jib can freely vary from 0° to 40°.
  • the limiting unit may be a limiting pull plate assembly, and the limiting pull plate assembly comprises a first pull plate 3 and a second pull plate 4, the first pull plate 3 is slidable relative to the second pull plate 4; During the sliding of the second pull plate 4, the amplitude of the auxiliary boom 10 is changed, and after the auxiliary boom 10 reaches a given position, the pin 5 is positioned and connected.
  • variable pulley mechanism 11 can realize the wire rope combination of different magnifications through the pulley block to reduce the wire rope pulling force; the limit pull plate assembly can perform the mechanical limit of 0° and 40° on the auxiliary boom 10 to avoid the auxiliary boom 10 Receive or over discharge.
  • the sub-boom 10 When the main boom is extended, the sub-boom 10 is at an angle of 0° by tightening the variable hoisting rope 2 (Fig. 1), and the main boom is extended to drive the variable hoisting rope 2 Rope; when the main boom is retracted, the hoisting and hoisting synchronously tightens the wire rope, and the main boom is retracted by the combination of the main boom and the variable hoisting wire rope 2.
  • the sub-boom 10 When the sub-boom 10 is in operation, the sub-boom 10 is swung by the retracting and hoisting wire 2, as shown in FIG.
  • the auxiliary boom 10 When the auxiliary boom 10 is operated at an angle of 40°, the working load is carried by the limit pull plate assembly, and the variable hoisting wire rope 2 is unstressed and in a relatively relaxed state.
  • the angle change of the auxiliary boom 0°, 20°, 40° can be manually realized by the limit pull plate assembly, and the limit pull plate assembly and the universal The mechanical luffing mechanism is similar.
  • the embodiment of the jib luffing device of the present disclosure utilizes a pulley mechanism for luffing, combined with a main hoisting wire rope or a sub-winding wire rope as a wire rope for sizing; it can realize automatic variability of the working state of the jib of the crane, saving time and labor No additional electrical or hydraulic equipment is required to save costs.
  • the hoisting wire rope is synchronously recovered, and the auxiliary arm can be assisted. Reduce the pressure load on the main arm retractor cylinder. This is because when the main boom is extended, the hoisting rope can be driven to release the rope; when the main boom is retracted, the jib of the auxiliary boom is hoisted to simultaneously tighten the wire rope, and the main boom is retracted.
  • the cylinder and the variable amplitude hoisting wire rope work together to achieve the retraction of the main boom.
  • due to the limited pulling force of the hoisting wire rope generally no more than 15 tons, the main boom and the auxiliary boom structure are not damaged, thereby simplifying the operation procedure of the telescopic arm, and the operation is simple, convenient and practical.
  • the jib luffing device may be replaced with a hydraulic ram; the hydraulic ram is also disposed between the fixed truss arm and the luffing truss arm.
  • variable amplitude pulley mechanism 11 can be disassembled and replaced with a hydraulic oil cylinder, and a hydraulic oil delivery reel can be installed on the auxiliary arm.
  • a hydraulic oil delivery reel can be installed on the auxiliary arm.
  • the auxiliary arm luffing device of the present embodiment can be interchanged with the hydraulic oil cylinder for convenient selection and configuration.
  • the jib luffing device of the present disclosure can realize the interchange and matching of the conventional mechanical luffing, the hydraulic cylinder automatic luffing and the hoisting wire rope automatic luffing.
  • the present disclosure also discloses a crane provided with the jib luffing device of any of the above. Since the crane includes the above-described jib luffing device, it also has the technical effect that the jib luffing device should have. I will not repeat them.
  • the present disclosure also discloses a jib amplitude sizing method, which is based on the above-described jib luffing device, and performs a sub-boom sag operation by retracting the slanted hoisting wire 2 .
  • the luffing wire rope 2 may be wound around the luffing pulley mechanism 11, and the luffing operation of the sub-boom 10 may be realized by controlling the retracting of the luffing wire rope 2.
  • the jib luffing device, the crane and the jib luffing method provided by the present disclosure using the variable amplitude pulley
  • the mechanism combined with the variable amplitude hoisting wire rope, can realize the automatic amplitude change of the working state of the crane jib, saving time and labor; no additional electrical or hydraulic equipment is needed, and the cost is saved, for example, compared with the hydraulic cylinder of the prior art.
  • the frame mechanism can save the cost of one cylinder, one hose reel and related hydraulic accessories; and the hoisting wire rope is synchronously recovered when the main arm is retracted, which can play the role of auxiliary retracting arm and reduce the pressure of the main arm retracting arm cylinder load. Therefore, the jib luffing device, the crane and the jib luffing method of the present disclosure have industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

L'invention concerne un dispositif d'inclinaison variable de la fléchette, une grue et un procédé d'inclinaison variable de la fléchette. Le dispositif d'inclinaison variable de la fléchette comprend : une flèche en treillis fixe (7A), une flèche en treillis à inclinaison variable (7B) et un mécanisme de poulies à inclinaison variable (11), la flèche en treillis fixe (7A) étant agencée sur la partie supérieure d'une flèche principale d'une grue, la flèche en treillis à inclinaison variable (7B) étant articulée à la flèche en treillis fixe (7A) et le mécanisme de poulies à inclinaison variable (11) comprenant une première poulie articulée à la flèche en treillis fixe (7A) et une seconde poulie articulée à la flèche en treillis à inclinaison variable (7B). Lorsque le mécanisme de poulies à inclinaison variable (11) est utilisé pour incliner la fléchette (10), un câble en acier de levage et à inclinaison variable est enroulé autour du mécanisme de poulies à inclinaison variable (11). La solution technique utilise le mécanisme de poulies à inclinaison variable (11) combiné à un câble en acier de levage principal ou à un câble en acier de levage auxiliaire qui fait office de câble en acier à inclinaison variable pour réaliser une inclinaison variable automatique de la condition de travail de la fléchette de la grue, ce qui permet d'économiser du temps et de l'énergie sans avoir besoin de dispositifs électriques ou hydrauliques supplémentaires, et d'économiser le coût. De plus, le câble en acier de levage est retiré en même temps que la flèche principale est rétractée de sorte à aider à la rétractation et à réduire la charge de pression d'un cylindre à huile pour permettre la rétractation de la flèche principale.
PCT/CN2014/089026 2013-12-17 2014-10-21 Dispositif d'inclinaison variable de la fléchette, grue et procédé d'inclinaison variable de la fléchette WO2015090109A1 (fr)

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CN201310693620.3 2013-12-17
CN201310693620.3A CN103626058B (zh) 2013-12-17 2013-12-17 副臂变幅装置、起重机及副臂变幅方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109809310A (zh) * 2018-12-24 2019-05-28 科曼萨建设机械（杭州）有限公司 一种动臂塔机拉杆及其安装方法
CN110526138A (zh) * 2019-07-31 2019-12-03 中铁九桥工程有限公司 一种变幅式架梁起重机
CN113135511A (zh) * 2021-04-29 2021-07-20 徐州重型机械有限公司 主臂、起重机以及起重机的副臂收放方法
CN116891123A (zh) * 2023-09-11 2023-10-17 山西建投建筑产业有限公司 一种板材输送半自动式搬运设备

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CN103626058B (zh) * 2013-12-17 2016-02-24 三一汽车起重机械有限公司 副臂变幅装置、起重机及副臂变幅方法
CN104528556A (zh) * 2014-12-31 2015-04-22 徐州重型机械有限公司 第三支架自动收放装置以及起重机
CN105060143B (zh) * 2015-07-14 2017-03-29 三一汽车起重机械有限公司 一种起重机臂架机构及起重机
CN106241628A (zh) * 2016-08-25 2016-12-21 徐州重型机械有限公司 桁架臂结构及起重机
CN106672824B (zh) * 2016-12-22 2018-04-13 中联重科股份有限公司 过绳滑轮组件和工程机械
CN109368515A (zh) * 2018-11-12 2019-02-22 三汽车起重机械有限公司 副臂变幅装置、副臂装置及起重机
CN109534191A (zh) * 2018-12-11 2019-03-29 中联重科股份有限公司 起重机的副臂、臂架以及起重机
CN111137796A (zh) * 2019-12-12 2020-05-12 徐州重型机械有限公司 一种新型臂架起重机

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CN101898728B (zh) * 2009-05-26 2012-01-04 徐州重型机械有限公司 用于起重机的副起重臂
CN102358581B (zh) * 2011-09-14 2013-02-13 哈尔滨东建机械制造有限公司 单绳三段式水平吊臂翻折缓冲自锁装置
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Publication number Priority date Publication date Assignee Title
GB1378740A (en) * 1966-03-25 1974-12-27 Secr Defence Load handling mechanism
EP0443353B1 (fr) * 1990-02-17 1994-07-27 Fried. Krupp AG Hoesch-Krupp Grue téléscopique montée sur véhicule
CN2249232Y (zh) * 1996-01-31 1997-03-12 徐州工程机械集团有限公司 起重机可变幅超长副臂装置
CN201473227U (zh) * 2009-05-26 2010-05-19 徐州重型机械有限公司 用于起重机的副起重臂
CN103626058A (zh) * 2013-12-17 2014-03-12 三一汽车起重机械有限公司 副臂变幅装置、起重机及副臂变幅方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109809310A (zh) * 2018-12-24 2019-05-28 科曼萨建设机械（杭州）有限公司 一种动臂塔机拉杆及其安装方法
CN109809310B (zh) * 2018-12-24 2024-06-11 科曼萨建设机械（杭州）有限公司 一种动臂塔机拉杆及其安装方法
CN110526138A (zh) * 2019-07-31 2019-12-03 中铁九桥工程有限公司 一种变幅式架梁起重机
CN113135511A (zh) * 2021-04-29 2021-07-20 徐州重型机械有限公司 主臂、起重机以及起重机的副臂收放方法
CN113135511B (zh) * 2021-04-29 2024-05-14 徐州重型机械有限公司 主臂、起重机以及起重机的副臂收放方法
CN116891123A (zh) * 2023-09-11 2023-10-17 山西建投建筑产业有限公司 一种板材输送半自动式搬运设备
CN116891123B (zh) * 2023-09-11 2023-11-28 山西建投建筑产业有限公司 一种板材输送半自动式搬运设备

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