WO2023088474A1 - 一种四滑轮组二级容差式吊钩 - Google Patents

一种四滑轮组二级容差式吊钩 Download PDF

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WO2023088474A1
WO2023088474A1 PCT/CN2022/133349 CN2022133349W WO2023088474A1 WO 2023088474 A1 WO2023088474 A1 WO 2023088474A1 CN 2022133349 W CN2022133349 W CN 2022133349W WO 2023088474 A1 WO2023088474 A1 WO 2023088474A1
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Prior art keywords
balance beam
hook
level
level balance
tolerance type
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PCT/CN2022/133349
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English (en)
French (fr)
Inventor
夏泳泳
米成宏
刘磊
郑怀鹏
陈长华
张阳羊
王成运
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徐州建机工程机械有限公司
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Priority to AU2022390580A priority Critical patent/AU2022390580A1/en
Publication of WO2023088474A1 publication Critical patent/WO2023088474A1/zh

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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
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Definitions

  • the invention relates to a two-stage tolerance type suspension hook of four pulley blocks, which belongs to the technical field of construction machinery.
  • the hook is an important part of the tower crane, which carries the hoisting operation of the whole tower crane.
  • the quality of the hook design directly affects the working performance and hoisting efficiency of the tower crane.
  • the existing tower crane hook corresponds to one hoisting mechanism, and the hoisting operation of conventional tower cranes is realized in the form of single lifting and single hook.
  • two or more The synchronous operation of multiple hoisting mechanisms affects the hoisting performance of the tower crane and the multi-magnification switching function, and has a certain impact on the hoisting operation range of the tower crane.
  • the purpose of the present invention is to overcome the deficiencies in the prior art, and provide a two-level tolerance type four-pulley hook, which is used to solve the problem of hoisting performance, Cases where the multi-magnification switching function is affected.
  • a four-pulley block secondary tolerance type hook including the hook body, and also includes a primary balance beam, a connecting frame, a secondary balance beam and Moving pulley block, the hook body is fixedly connected to the middle of the bottom end of the first-level balance beam, the left and right ends of the first-level balance beam are respectively fixedly connected to a connecting frame, and the two connecting frames are respectively connected to a second-level balance beam.
  • the two-level balance beam is connected to the first-level balance beam in a cross shape, and the first-level balance beam and the second-level balance beam form an "H" shape as a whole.
  • a first limiting device for limiting the primary balance beam and a second limiting device for limiting the secondary balance beam are fixedly connected to the connecting frame.
  • the beneficial effect achieved by the present invention is that the two-level tolerance hook of the four-pulley block, through the four movable pulley blocks on the secondary balance beam, makes the tower crane not in the left and right directions when there is a hoisting load.
  • it can be controlled by the limit device of the first-level balance beam.
  • the limit device of the second-level balance beam When the front and rear directions of the hoisting are not synchronized, it can be controlled by the limit device of the second-level balance beam, and then the height tolerance of the hook when working can be controlled at a certain level.
  • the synchronization and coordination of multi-mechanism lifting operations in the front, rear and left and right directions are finally realized.
  • the synchronous lifting operation of four moving pulleys and multi-magnification is realized.
  • the four moving pulleys can work independently and simultaneously, and then realize the hoisting of super large tonnage as a whole.
  • Fig. 1 is a schematic diagram of an embodiment of the present invention when the primary balance beam is limited.
  • Fig. 2 is a schematic diagram of the embodiment of the present invention when the secondary balance beam is limited.
  • Fig. 3 is a front view of the connecting frame of the embodiment of the present invention.
  • Fig. 4 is a side view of the connecting frame of the embodiment of the present invention.
  • Fig. 5 is a front view of the primary balance beam structure of the embodiment of the present invention.
  • Fig. 6 is a front view of the secondary balance beam structure of the embodiment of the present invention.
  • Fig. 7 is a schematic diagram of the structure of the double jib frame of the tower crane in the prior art.
  • Fig. 8 is a top view of the structure of the embodiment of the present invention.
  • First-level balance beam 2. Second-level balance beam; 3. Connecting frame; 4. Moving pulley block; 5. Upper side plate; 6. Lower side plate; 7. Bolt rod group; 10, the second pin hole; 11, the third pin hole; 12, the hook body; 13, the left arm frame; 14, the right arm frame; 15, the left trolley; 16, the right trolley.
  • a two-level tolerance type four-pulley hook includes a hook body, specifically, the hook body 12 includes a hook and a hook head, and the hook is balanced with the first level
  • the beam 1 is fixedly connected, and the hook head is rotatably connected to the bottom of the hook. It also includes a primary balance beam 1, a connecting frame 3, a secondary balance beam 2 and a moving pulley block 4.
  • the hook body is fixedly connected to the bottom middle of the primary balance beam 1, the left and right ends of the primary balance beam 1 are respectively fixedly connected to a connecting frame 3, and the two connecting frames 3 are respectively connected to a secondary
  • the balance beam 2 specifically, the secondary balance beam 2 is symmetrically distributed at both ends of the primary balance beam 1, the secondary balance beam 2 is connected to the primary balance beam 1 in a cross shape, and the secondary balance beam 2 Symmetrically distributed at both ends of the first-level balance beam 1, as shown in Figure 8, the first-level balance beam 1 and the second-level balance beam 2 form an "H" shape as a whole, and the two ends of each second-level balance beam 2 are respectively connected by pins A moving block 4.
  • the first pin hole 9 on the connecting frame 3 is connected to the primary balance beam 1, and the second pin hole 10 is connected to the middle position of the secondary balance beam 2 on both sides,
  • the first pin hole 9 and the second pin hole 10 are distributed in a cross shape as a whole.
  • the four-moving pulley block 4 on the two-stage tolerance type hook of the four-pulley block is aimed at the double arm frame structure, which are respectively the left arm frame 13, the right arm frame 14, the left trolley 15, the right arm frame Dolly 16, wherein left and right trolleys are front and rear double trolleys, and pulleys are respectively arranged on the double trolleys, and the four-moving pulley blocks 4 on the secondary tolerance type hook of the four pulley blocks respectively correspond to the pulley blocks on the left and right trolleys.
  • the super-large tonnage hoisting of the jib structure is different from the traditional single jib single hook pulley block form, and each movable pulley block 4 is respectively connected to a hoisting mechanism of the tower crane through transmission.
  • the two ends of the primary balance beam 1 and the secondary balance beam 2 are in the shape of circular arcs, the bottom circular arcs are tangentially connected, the upper part of the circular arcs is tangential to a part, and the middle is a protruding structure , to ensure the strength requirements of the intermediate force.
  • the first-level balance beam 1 and the second-level balance beam 2 are provided with two axisymmetric third pin holes 11, and are fixedly connected with the upper side plate 5. The difference is only that the first-level balance beam 1 and the second-level balance beam The protruding angles of the protruding structures of 2 and the lengths of the two balance beams are different.
  • the distance between the third pin holes 11 on both sides of the primary balance beam 1 is about 2000 mm, and the height of both sides is about 500 mm.
  • the first-level balance beam 1 is in a horizontal state.
  • the shaft holes 11 are respectively connected with the movable pulley blocks 4 on the left and right sides.
  • the secondary balance beam 2 is in a horizontal state.
  • a first limiting device for limiting the primary balance beam 1 and a second limiting device for limiting the secondary balance beam 2 are fixedly connected to the connecting frame 3 .
  • the first limiting device is the lower side plate 6, and the lower side plate 6 is fixed on the secondary balance beam 2 and the connecting frame 3 through pin shafts
  • the second limiting device includes The lower side plate 6 fixedly connected with the connecting frame 3 under the beam 2 and the bolt rod group 7 above the secondary balance beam 2 .
  • the movable pulley blocks 4 of the left and right secondary balance beams 2 above the primary balance beam 1 will be combined
  • the primary balance beam 1 can be dislocated up and down, resulting in a certain range of height margins in the combination of the movable pulley blocks 4 on both sides, and the maximum height margin difference can reach 600mm until the structure of the primary balance beam 1
  • the upper side plate 5 is in contact with the lower side plate 6 of the secondary balance beam 2 in the combination of the right moving pulley block 4. At this time, it reaches the maximum limit position.
  • the left and right sides are relieved. Synchronization caused by different lifting speeds of the lifting mechanism.
  • the hoisting mechanism controls the hook to move up and down
  • the wire rope pulley block in the front and rear direction of the hook controlled by the hoisting mechanism has the front and rear pulley blocks connected by pin shafts on the two secondary balance beams 2 due to the asynchronous lifting speed in the front and rear directions.
  • Asynchronous, one suddenly high, one suddenly low, in this state the structure of the secondary balance beam 2 itself is needed to ease the control, the height difference between the front and rear of the secondary balance beam 2 due to the asynchronous lifting speed of the front and rear
  • the bolt rod group 7 and the rib plate 8 limit the vertical movement range of the secondary balance beam 2.
  • the maximum position is to touch the limit devices on both sides.
  • the position device controls the tolerance of the secondary balance beam 2 within 600mm, and finally balances the asynchrony of the lifting speed in the front and rear directions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

一种四滑轮组二级容差式吊钩，包括吊钩本体，还包括一级平衡梁（1）、连接架（3）、二级平衡梁（2）和动滑轮组（4），所述吊钩本体固定连接于一级平衡梁（1）的底端中部，所述一级平衡梁（1）的左右两端分别与一个连接架（3）固定连接，两个所述连接架（3）分别连接一个二级平衡梁（2），所述二级平衡梁（2）与一级平衡梁（1）十字形相连，一级平衡梁（1）与二级平衡梁（2）整体形成 "H" 形，每个二级平衡梁（2）两端分别通过销轴相连一个动滑轮组（4）。

Description

一种四滑轮组二级容差式吊钩 技术领域
本发明涉及一种四滑轮组二级容差式吊钩，属于建筑机械技术领域。
背景技术
吊钩是塔式起重机上的重要组成部分，承载着整台塔机的吊装作业。吊钩设计的好坏直接影响塔机的工作性能和吊装效率。现有的塔机吊钩对应一个起升机构，按照单起升、单吊钩的形式实现常规塔机的吊装作业，在面对超大吨位双臂架式塔机时，不能实现二个及以上多起升机构的同步作业，影响塔机吊装的性能及多倍率切换功能，并对塔机的吊装作业范围造成一定影响。
发明内容
本发明的目的在于克服现有技术中的不足，提供一种四滑轮组二级容差式吊钩，用于解决现有吊钩在面对拥有多个起升机构的塔机时，吊装性能、多倍率切换功能受到影响的情况。
为解决所述技术问题，本发明是采用下述技术方案实现的：一种四滑轮组二级容差式吊钩，包括吊钩本体，还包括一级平衡梁、连接架、二级平衡梁和动滑轮组，所述吊钩本体固定连接于一级平衡梁的底端中部，所述一级平衡梁的左右两端分别与一个连接架固定连接，两个所述连接架分别连接一个二级平衡梁，所述二级平衡梁与一级平衡梁十字形相连，一级平衡梁与二级平衡梁整体形成“H”形，每个二级平衡梁两端分别通过销轴相连一个动滑轮组，所述连接架上固定连接有用于限位一级平衡梁的第一限位装置和用于限位二级平衡梁的第二限位装置。
与现有技术相比，本发明所达到的有益效果：该四滑轮组二级容差式吊钩，通过设置的二级平衡梁上的四个动滑轮组，使塔机在存在吊载左右方向不同步时，可通过一级平衡梁的限位装置控制，当存在吊载前后方向不同步时，可通过二级平衡梁的限位装置控制，进而将吊钩工作时的高度容差控制在一定范围内，最终实现多机构前后和左右方向起升操作的同步性和协调性。通过在二级平衡梁上分别安置左右动滑轮组，以实现四动滑轮组、多倍率的同步起升作业，四动滑轮组既可单独作业，又可同步作业，进而整体实现超大吨位的吊装。
附图说明
图1是本发明实施例一级平衡梁被限位时的示意图。
图2是本发明实施例二级平衡梁被限位时的示意图。
图3是本发明实施例连接架的正视图。
图4是本发明实施例连接架的侧视图。
图5是本发明实施例一级平衡梁结构正视图。
图6是本发明实施例二级平衡梁结构正视图。
图7是现有技术中塔机双臂架结构示意图。
图8是本发明实施例结构俯视图。
1、一级平衡梁；2、二级平衡梁；3、连接架；4、动滑轮组；5、上侧板；6、下侧板；7、螺栓杆组；8、筋板；9、第一销轴孔；10、第二销轴孔；11、第三销轴孔；12、吊钩本体；13、左臂架；14、右臂架；15、左小车；16、右小车。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
如图1、图2所示，一种四滑轮组二级容差式吊钩，包括吊钩本体，具体的，所述吊钩本体12包括吊钩和钩头，所述吊钩与一级平衡梁1固定连接，所述钩头转动连接于吊钩底部。还包括一级平衡梁1、连接架3、二级平衡梁2和动滑轮组4。所述吊钩本体固定连接于一级平衡梁1的底端中部，所述一级平衡梁1的左右两端分别与一个连接架3固定连接，两个所述连接架3分别连接一个二级平衡梁2，具体的，所述二级平衡梁2对称分布于一级平衡梁1的两端，所述二级平衡梁2与一级平衡梁1十字形相连，所述二级平衡梁2对称分布于一级平衡梁1的两端，如图8所示，一级平衡梁1与二级平衡梁2整体形成“H”形，每个二级平衡梁2两端分别通过销轴相连一个动滑轮组4。如图3、图4所示，在连接时，所述连接架3上的第一销轴孔9连接一级平衡梁1，第二销轴孔10连接两侧二级平衡梁2中间位置，第一销轴孔9销、第二销轴孔10整体呈十字形交叉分布。
在使用时，如图7所示，本四滑轮组二级容差式吊钩上的四动滑轮组4是针对双臂架结构，分别为左臂架13、右臂架14，左小车15、右小车16，其中 左右小车均为前后双小车，双小车上各有滑轮，该四滑轮组二级容差式吊钩上的四动滑轮组4分别对应左右小车上的滑轮组，这种结构形式特别针对双臂架结构的超大吨位吊载，区别于传统的单臂架单吊钩滑轮组形式，每个所述动滑轮组4分别与塔机的一个起升机构传动连接。
如图5、图6所示，所述一级平衡梁1、二级平衡梁2两端为圆弧形状，底部圆弧直线相切相连，上部圆弧直线相切一部分，中间为凸出结构，以保证中间受力的强度要求。所述一级平衡梁1、二级平衡梁2均开设有两个轴对称的第三销轴孔11，并固定连接有上侧板5，区别仅在于一级平衡梁1和二级平衡梁2的凸出结构的凸起角度以及两平衡梁的长度不同。具体的，所述一级平衡梁1的两侧第三销轴孔11的距离约为2000mm，两侧高度上约为500mm，两侧的第三销轴孔11分别与左右侧的连接架3相连，正常状态下，一级平衡梁1处于水平状态所述一级平衡梁1的两侧第三销轴孔11的距离约为2500mm，两侧高度上约为500mm，两侧的第三销轴孔11分别与左右侧的动滑轮组4相连，正常状态下，二级平衡梁2处于水平状态。
所述连接架3上固定连接有用于限位一级平衡梁1的第一限位装置和用于限位二级平衡梁2的第二限位装置。具体的，所述第一限位装置为下侧板6，所述下侧板6通过销轴固定在二级平衡梁2和连接架3上，所述第二限位装置包括位于二级平衡梁2下方的与连接架3固定连接的下侧板6和二级平衡梁2上方的螺栓杆组7。当一级平衡梁1两侧起升速度不一致时，通过一级平衡梁1的高度容差来平衡，限位时通过一级平衡梁1的上侧板5接触到二级平衡梁2的下侧板6，此时，两侧动滑轮组4达到最大高度差，高度差约为600mm。当二级平衡梁2两侧起升速度不一致时，通过二级平衡梁2的高度容差来平衡，此时，二级平衡梁2的下侧板6接触到连接架3上的筋板8，另一侧，二级平衡梁2上的上侧板5接触到螺栓杆组7，通过两层装置限位，实现二级平衡梁2的高度差限位。
工作原理，当起升机构控制着吊钩前后方向移动时，考虑到左右两侧钢丝绳起升速度的不同步，一级平衡梁1上方的左右两侧二级平衡梁2的动滑轮组4组合会处于不同的高度位置，此时，一级平衡梁1可以上下错位，导致两侧动滑轮组4组合存在一定范围的高度余量，高度余量差最大可达到600mm，直到 一级平衡梁1结构的上侧板5接触到右侧动滑轮组4组合中的二级平衡梁2的下侧板6，此时达到最大极限位置，通过一级平衡梁1这个范围的高度容差，缓解左右两侧由起升机构起升速度不同所引起的同步性。当起升机构控制吊钩上下方向移动时，起升机构控制的吊钩前后方向钢丝绳滑轮组，由于前后方向起升速度的不同步，存在两个二级平衡梁2上销轴连接的前后滑轮组的不同步性，一个忽高、一个忽低，这种状态下，需要二级平衡梁2自身的结构来进行缓解控制，二级平衡梁2由于前后起升速度的不同步所引起的前后高度差时，二级平衡梁2上下方向存在两处限位装置螺栓杆组7、筋板8限制二级平衡梁2的上下移动范围，最大位置为接触到两侧限位装置，通过这两侧限位装置，将二级平衡梁2的容差量控制在600mm以内，最终平衡前后方向起升速度的不同步。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本发明的保护范围。

Claims (7)

  1. 一种四滑轮组二级容差式吊钩，包括吊钩本体，其特征在于：还包括一级平衡梁、连接架、二级平衡梁和动滑轮组；
    所述吊钩本体固定连接于一级平衡梁的底端中部，所述一级平衡梁的左右两端分别与一个连接架固定连接，两个所述连接架分别连接一个二级平衡梁，所述二级平衡梁与一级平衡梁十字形相连，一级平衡梁与二级平衡梁整体形成“H”形，每个二级平衡梁两端分别通过销轴相连一个动滑轮组；
    所述连接架上固定连接有用于限位一级平衡梁的第一限位装置和用于限位二级平衡梁的第二限位装置。
  2. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：所述二级平衡梁对称分布于一级平衡梁的两端。
  3. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：所述一级平衡梁、二级平衡梁两端为圆弧形状，底部圆弧直线相切相连，上部圆弧直线相切一部分，中间为凸出结构。
  4. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：所述第一限位装置为下侧板，所述下侧板通过销轴固定在二级平衡梁和连接架上，所述第二限位装置包括位于二级平衡梁上方的与连接架固定连接的筋板和二级平衡梁下方的螺栓杆组。
  5. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：每个所述动滑轮组分别与塔机的一个起升机构传动连接。
  6. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：所述吊钩本体包括吊钩和钩头，所述吊钩与一级平衡梁固定连接，所述钩头转动连接于吊钩底部。
  7. 如权利要求1所述的一种四滑轮组二级容差式吊钩，其特征在于：所述连接架上的第一销轴孔连接一级平衡梁，第二销轴孔连接两侧二级平衡梁中间位置，第一销轴孔销、第二销轴孔整体呈十字形交叉分布。
PCT/CN2022/133349 2021-11-22 2022-11-21 一种四滑轮组二级容差式吊钩 WO2023088474A1 (zh)

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