WO2013020259A1 - 起重机防过卷开关的限位重锤 - Google Patents

起重机防过卷开关的限位重锤 Download PDF

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Publication number
WO2013020259A1
WO2013020259A1 PCT/CN2011/078076 CN2011078076W WO2013020259A1 WO 2013020259 A1 WO2013020259 A1 WO 2013020259A1 CN 2011078076 W CN2011078076 W CN 2011078076W WO 2013020259 A1 WO2013020259 A1 WO 2013020259A1
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WO
WIPO (PCT)
Prior art keywords
limit block
mounting surface
weight
limit
right half
Prior art date
Application number
PCT/CN2011/078076
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English (en)
French (fr)
Inventor
岳红磊
Original Assignee
长沙中联重工科技发展股份有限公司
湖南中联重科专用车有限责任公司
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Application filed by 长沙中联重工科技发展股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 长沙中联重工科技发展股份有限公司
Priority to PCT/CN2011/078076 priority Critical patent/WO2013020259A1/zh
Publication of WO2013020259A1 publication Critical patent/WO2013020259A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/50—Applications of limit circuits or of limit-switch arrangements

Definitions

  • the present invention relates to a crane anti-rolling switch, and more particularly to a limit weight of an over-winding switch.
  • BACKGROUND OF THE INVENTION During the lifting process of a crane, the height of the hook of the crane is gradually increased with the hoisting of the wire rope, and a heavy hammer type over-winding switch is arranged on the path of lifting the hook, and the anti-rolling switch is also called over-roll protection. Device. When the hook contacts the limit weight of the anti-roll switch, the anti-roll switch operates.
  • Fig. 1 shows a state of use of the anti-roll switch. As shown in Fig.
  • the anti-roll switch 1 is mounted on the boom 10', and the hook wire 12' runs through the limit weight 13'.
  • the hook 14' moves upward to raise the limit weight 13', The position of the weight 13' is relieved of the tension of the anti-roll switch, and the anti-roll switch 1 is actuated to emit a signal corresponding to the overwinding of the wire 12'.
  • the wire rope through hole of the existing limit weight is formed by the combination of the left half limit block and the right half limit block, and the left half limit block and the right half limit block are connected by two bolts. When the wire rope override is changed, the wire rope needs to be removed from the limit weight. Therefore, the two bolts need to be removed, and the wire rope can be taken out from the wire rope through hole.
  • the object of the present invention is to provide a limit weight of a crane anti-roll switch which is convenient to disassemble.
  • the present invention provides a limit weight of a crane anti-rolling switch, comprising: a left half limit block and a right half limit block, which are pivotally connected together by a pin shaft, and are in a fan-shaped opening and closing state, wherein The joint surface of the left half limit block and the joint surface of the right half limit block form a wire rope through hole when closed; the lock column and the nut screwed on the lock column, and the lock column is fixedly connected to the left half limit block or the right half One of the limiting blocks is located at one end away from the pin shaft; and the lock plate is pivotally connected to the other of the left half limit block or the right half limit block and is located away from the pin One end of the shaft, the second end has an open slot that is in locking engagement with the locking post on the second mounting surface of the right half limiting block and a counterbore that receives the nut.
  • the left half limit block and the right half limit block are assembled and disassembled quickly, and the wire rope rate can be quickly replaced, and the time for replacing the magnification can be reduced.
  • one end of the left half limit block away from the pin shaft has a first mounting surface, and the first mounting surface has a bolt, and the first end of the lock plate is pivotally connected to the bolt; the left half limit block is away from the pin shaft
  • One end has a second mounting surface, and the locking post is fixedly coupled to the second mounting surface. This facilitates the operator to open the lock plate or close the lock plate.
  • first mounting surface of the left half limit block and the second mounting surface of the right half limit block are flush with each other when the left half limit block and the right half limit block are closed. This can inform the operator whether the left half limit block and the right half limit block are completely closed, if not completely closed, it is not flush, if it is completely closed, it is flush. Further, the inner surface of the lock plate is in contact with the first mounting surface and the second mounting surface. This gives the operator a feel that allows the operator to intuitively know if the lock plate is in place. Further, in an embodiment, the first mounting surface and the second mounting surface are located on a side of the limit weight.
  • the end of the pin on the left half limit block further includes a first slice parallel to the first mounting surface
  • the end of the pin on the right half limit block further includes a second parallel to the second mounting surface.
  • the cut surface wherein the first surface and the second cut surface are flush with each other when the left half limit block and the right half limit block are closed. This can inform the operator whether the left half limit block and the right half limit block are completely closed, if not completely closed, it is not flush, if it is completely closed, it is flush.
  • the first mounting surface and the second mounting surface are located on a top surface of the limit weight having a lifting lug.
  • the tops of the left half limit block and the right half limit block respectively form a lifting lug, wherein the limit weight is suspended by a wire rope passing through the lifting lug and the top of the left half limit block and the right half limit block Maintain a horizontal attitude.
  • the nut is a dish nut. With the disc nut, it can be screwed manually, without the need for additional tools, and is quick and easy.
  • the lock plate further includes a counterbore for receiving the nut disposed at the opening groove of the lock plate. In this way, the lock plate does not move after the butterfly nut is tightened, thereby preventing the limit weight from loosening.
  • FIG. 1 is a view showing a state of use of a prior art anti-rolling switch
  • Fig. 2 is a side view showing a structure of a limit weight of a crane anti-rolling switch according to the present invention
  • FIG. 4 is a schematic structural view of the limit weight of the crane anti-rolling switch
  • FIG. 4 is a structural view of the limit weight of the limit hammer shown in FIG.
  • Fig. 6 is a plan view showing the lock plate of the limit weight shown in Fig. 2.
  • the limit weight 10 of the present invention includes: a left half limit block 11, a right half limit block 12, and a left half limit block 11 and a right half limit block 12 pivoted together. a pin 13 , a bolt 14 fixedly connected to the left half limit block 11 , a lock post 15 fixedly connected to the right half limit block 12 , and a lock plate pivotally connected to the bolt 14 for locking the lock post 15 16.
  • the left half limit block 11 and the right half limit block 12 are pivotally connected together by the pin shaft 13 in a fan-shaped opening and closing state, wherein the joint surface 11a and the right half limit block 12 of the left half limit block 11 are
  • the joint face 12a forms a wire rope passage hole 10a when closed.
  • the tops of the left half limit block 11 and the right half limit block 12 form lugs 111, 121, respectively.
  • the lifting lugs 111, 121 are used to hoist the limit weight 10 on the pull-down lever of the anti-roll switch through a thin wire rope.
  • the bolt 14 is fixedly connected to the first mounting surface 112 of the left half limit block 11, wherein the bolt 14 is disposed perpendicular to the first mounting surface 112.
  • the locking post 15 is fixedly connected to the second mounting surface 122 of the right half limiting block 12, wherein the locking post 15 is disposed perpendicular to the second mounting surface 122, and the first mounting surface 112 and the second mounting surface 122 are in the left half limit.
  • Block 11 and right half limit block 12 are flush with each other when closed.
  • 5 and FIG. 6 are schematic views showing the structure of the lock plate 16 of the limit weight. As shown in FIG. 5 and FIG.
  • one end of the lock plate 16 is pivotally connected to the bolt 14 of the left half limit block 11, and the other end is
  • the opening groove 161 has a locking fit with the lock post 15 of the right half limit block 12, and the open groove 161 has a U shape.
  • a disc nut 17 is screwed onto the lock cylinder 15 for manually tightening the lock plate 16.
  • the wing nut 17 is loosened. Due to the presence of the open groove 161 at the right end of the lock plate 16, the lock plate 16 can be rotated counterclockwise around the bolt 14 without completely removing the wing nut 17.
  • the left half limit block 11 and the right half limit block 12 are loosened.
  • the wire rope replacement magnification is removed, and after the magnification is changed, the fixing can be completed according to the reverse process.
  • the right end opening groove 161 of the lock plate 16 has a counterbore 162
  • the movement of the lock plate 16 after the wing nut 17 is tightened can be prevented, thereby preventing the limit weight from coming loose.
  • the inner surface of the lock plate 16 is fitted to the first mounting surface 112 and the second mounting surface 122 to give the operator a feel that allows the operator to intuitively know if the lock plate 16 is in place.
  • the lifting lug 111 of the left half limit block 11 and the lifting lug 121 of the right half limit block 12 are located directly above the center of gravity of the limit weight 10 to maintain the limit weight 10 in a horizontal sagging posture.
  • the first mounting surface 112 and the second mounting surface 122 are located in the limit weight
  • the left half limit block 11 further includes a first cut surface 113 parallel to the first mounting surface 112
  • the right half limit block 12 further includes a second cut surface 123 parallel to the second mounting surface 122, wherein the first cut surface 113 And the second cutting surface 123 is flush with each other when the left half limit block and the right half limit block are closed, is located outside the pin shaft 13, is compact, and can inform the operator whether the left half limit block and the right half limit block are Fully closed, if not fully closed, it is not flush, if it is completely closed, it is flush.
  • the first mounting surface 112 and the second mounting surface 122 may be located on the top surface 10b of the limit weight 10 having the ears 111, 121.
  • the disc nut described above may be replaced by a conventional nut.
  • the limit weight of the crane anti-roll switch of the invention has the advantages of quick assembly and disassembly of the left half limit block and the right half limit block, which can realize the rapid replacement of the wire rope rate and can reduce the replacement time.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

一种起重机防过卷开关的限位重锤，包括左半限位块（11）和右半限位块（12），通过销轴（13）枢接在一起，呈扇形开合状态，其中，左半限位块的接合面（11a）和右半限位块的接合面（12a）在闭合时形成钢丝绳过孔（10a）；锁柱（15）和螺接在锁柱上的螺母（17），锁柱固定连接在右半限位块的远离销轴的一端；以及锁板（16），第一端枢接在左半限位块的远离销轴的一端，第二端具有与右半限位块的第二安装面上的锁柱呈锁定配合的开口槽（161）和接纳螺母的沉孔（162）。该限位重锤拼装和拆卸快捷，可实现钢丝绳倍率的快速更换，能够减少更换倍率的时间。

Description

起重机防过卷开关的限位重锤 技术领域 本发明涉及一种起重机防过卷开关， 尤其涉及防过卷开关的限位重锤。 背景技术 在起重机起吊过程中， 起重机的吊钩的高度随钢丝绳的卷扬逐渐提升， 在吊钩提 升的路径上设有重锤式防过卷开关， 该防过卷开关也称为过卷保护装置。 当吊钩接触 到防过卷开关的限位重锤时， 防过卷开关动作。 图 1示出了防过卷开关的使用状态图。 如图 1所示， 防过卷开关 1 安装在吊臂 10' 上， 吊钩钢丝绳 12' 贯穿限位重锤 13 '， 当吊钩 14' 向上运动抬起限位重锤 13 ' 时， 限位重锤 13 ' 对防过卷开关的拉力消除， 防过卷开关 1 动作， 发出与钢丝绳 12' 过卷相对应的信号。 现有的限位重锤的钢丝绳过孔由左半限位块和右半限位块拼合在一起形成， 并且 左半限位块和右半限位块通过两螺栓连接在一起。 当更换钢丝绳倍率时， 钢丝绳需要 脱离限位重锤， 如此需要将两螺栓拆除， 钢丝绳才能从钢丝绳过孔中脱出。 在起重机调试和作业中， 有时需要更换钢丝绳倍率， 然而现有的限位重锤的左半 限位块和右半限位块的拆分不方便， 螺栓和螺母等连接件容易丢失。 发明内容 本发明目的在于提供一种拆分方便的起重机防过卷开关的限位重锤。 为此， 本发明提供了一种起重机防过卷开关的限位重锤， 包括： 左半限位块和右 半限位块， 通过销轴枢接在一起， 呈扇形开合状态， 其中， 左半限位块的接合面和右 半限位块的接合面在闭合时形成钢丝绳过孔； 锁柱和螺接在锁柱上的螺母， 锁柱固定 连接在左半限位块或右半限位块二者中的一个上并且位于远离销轴的一端；以及锁板， 第一端枢接在左半限位块或右半限位块二者中的另一个上并且位于的远离销轴的一 端， 第二端具有与右半限位块的第二安装面上的锁柱呈锁定配合的开口槽和接纳螺母 的沉孔。 根据本发明的起重机防过卷开关的限位重锤， 左半限位块和右半限位块拼装和拆 卸快捷， 可实现钢丝绳倍率的快速更换， 能够减少更换倍率的时间。 进一步地， 上述左半限位块的远离销轴的一端具有第一安装面， 第一安装面上具 有螺栓， 锁板的第一端枢接于螺栓上； 左半限位块的远离销轴的一端具有第二安装面 上， 锁柱固定连接在第二安装面上。 这样方便操作人员打开锁板或闭合锁板的操作。 进一步地， 上述左半限位块的第一安装面与右半限位块的第二安装面在左半限位 块和右半限位块闭合时相互齐平。 这样能够告知操作人员左半限位块和右半限位块是 否完全闭合， 若未完全闭合， 则不平齐， 若完全闭合， 则齐平。 进一步地， 上述锁板的内表面与第一安装面和第二安装面贴合。 这样以给操作人 员一种手感， 使操作人员能够凭直觉知晓锁板是否安装到位。 进一步地， 在一实施例中， 上述第一安装面和第二安装面位于限位重锤的侧面。 进一步地，上述左半限位块上销轴所在一端还包括与第一安装面平行的第一切面， 右半限位块上销轴所在的一端还包括与第二安装面平行的第二切面， 其中， 第一切面 和第二切面在左半限位块和右半限位块闭合时相互齐平。 这样能够告知操作人员左半 限位块和右半限位块是否完全闭合， 若未完全闭合， 则不平齐， 若完全闭合， 则齐平。 进一步地， 在另一实施例中， 上述第一安装面和第二安装面位于限位重锤的具有 吊耳的顶面。 进一步地， 上述左半限位块和右半限位块的顶部分别形成吊耳， 其中， 限位重锤 通过穿设吊耳的钢丝绳悬挂并且左半限位块和右半限位块的顶部保持水平姿态。 进一步地， 上述螺母为碟形螺母。 使用碟形螺母， 可以手动旋拧操作， 无需其他 的工具辅助， 方便快捷。 进一步地， 上述锁板还包括在锁板的开口槽处设置的接纳螺母的沉孔。 如此在旋 紧蝶形螺母后锁板不会移动， 起到了防止限位重锤松脱的作用。 除了上面所描述的目的、 特征、 和优点之外， 本发明具有的其它目的、 特征、 和 优点， 将结合附图作进一步详细的说明。 附图说明 构成本说明书的一部分、 用于进一步理解本发明的附图示出了本发明的优选实施 例， 并与说明书一起用来说明本发明的原理。 图中： 图 1示出了现有技术的防过卷开关的使用状态图； 图 2是根据本发明的起重机防过卷开关的限位重锤的侧视结构示意图； 图 3是图 2所示起重机防过卷开关的限位重锤的俯视结构示意图； 图 4是图 2所示限位重锤在打开时的结构示意图； 图 5是图 2所示限位重锤的锁板的立体示意图； 以及 图 6是图 2所示限位重锤的锁板的平面示意图。 具体实施方式 以下结合附图对本发明的实施例进行详细说明， 但是本发明可以由权利要求限定 和覆盖的多种不同方式实施。 图 2至图 4示出了根据本发明的起重机防过卷开关的限位重锤的侧视结构示意图。 结合参照图 2至图 4， 本发明的限位重锤 10包括： 左半限位块 11、 右半限位块 12、 将左半限位块 11和右半限位块 12枢接在一起的销轴 13、 固定连接在左半限位块 11 上的螺栓 14、固定连接在右半限位块 12上的锁柱 15、 以及枢接在螺栓 14上用于锁定 锁柱 15的锁板 16、 以及螺接在锁柱 15上用于锁紧锁板 16的蝶形螺母 17。 具体地， 左半限位块 11和右半限位块 12通过销轴 13枢接在一起， 呈扇形开合状 态， 其中， 左半限位块 11的接合面 11a和右半限位块 12的接合面 12a在闭合时形成 钢丝绳过孔 10a。 左半限位块 11和右半限位块 12的顶部分别形成吊耳 111、 121。 吊 耳 111、 121用于通过较细的钢丝绳将限位重锤 10吊装在防过卷开关的下拉杆上。 螺栓 14固定连接在左半限位块 11的第一安装面 112上， 其中， 螺栓 14垂直于第 一安装面 112设置。 锁柱 15固定连接在右半限位块 12的第二安装面 122上，其中，锁柱 15垂直于第 二安装面 122设置，第一安装面 112和第二安装面 122在左半限位块 11和右半限位块 12闭合时相互齐平。 图 5和图 6示出了限位重锤的锁板 16的结构示意图， 如图 5和图 6所示， 锁板 16的一端枢接在左半限位块 11的螺栓 14上， 另一端具有与右半限位块 12的锁柱 15 呈锁定配合的开口槽 161， 该开口槽 161呈 U形。 碟形螺母 17螺接在锁柱 15上， 用 于手动紧固锁板 16。 当需要更换钢丝绳倍率时， 旋松蝶形螺母 17， 由于锁板 16右端的开口槽 161的 存在， 可在不完全取下蝶形螺母 17的情况下， 通过绕螺栓 14逆时针旋转锁板 16、 松 开左半限位块 11和右半限位块 12， 在左半限位块 11和右半限位块 12展开后， 取下 钢丝绳更换倍率， 更换倍率后可按反向过程完成固定。 由于锁板 16的右端开口槽 161处有沉孔 162， 可防止旋紧蝶形螺母 17后锁板 16 的移动， 起到了防止限位重锤松脱的作用。 优选地， 锁板 16的内表面与第一安装面 112和第二安装面 122贴合， 以给操作人 员一种手感， 使操作人员能够凭直觉知晓锁板 16是否安装到位。 优选地， 左半限位块 11的吊耳 111和右半限位块 12的吊耳 121位于限位重锤 10 的重心的正上方， 以使限位重锤 10保持水平的下垂姿态。 在图 2至图 4所示的实施例中， 第一安装面 112和第二安装面 122位于限位重锤
10的侧面。左半限位块 11还包括与第一安装面 112平行的第一切面 113， 右半限位块 12还包括与第二安装面 122平行的第二切面 123，其中，第一切面 113和第二切面 123 在左半限位块和右半限位块闭合时相互齐平， 位于销轴 13的外侧， 结构紧凑， 并且能 够告知操作人员左半限位块和右半限位块是否完全闭合， 若未完全闭合， 则不平齐， 若完全闭合， 则齐平。 在其它实施例中， 上述第一安装面 112和第二安装面 122可以位于限位重锤 10 的具有吊耳 111、 121的顶面 10b。 在其它实施例中， 上述碟形螺母可以由普通的螺母 代替。 本发明的起重机防过卷开关的限位重锤， 左半限位块和右半限位块拼装和拆卸快 捷， 可实现钢丝绳倍率的快速更换， 能够减少更换倍率的时间。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种起重机防过卷开关的限位重锤， 其特征在于， 包括：
左半限位块和右半限位块， 通过销轴枢接在一起， 呈扇形开合状态， 其中， 所述左半限位块的接合面和右半限位块的接合面在闭合时形成钢丝绳过孔； 锁柱和螺接在所述锁柱上的螺母， 所述锁柱固定连接在左半限位块或所述 右半限位块二者中的一个上并且位于远离所述销轴的一端； 以及
锁板， 第一端枢接在所述左半限位块或右半限位块二者中的另一个上并且 位于远离所述销轴的一端， 第二端具有与所述右半限位块的第二安装面上的锁 柱呈锁定配合的开口槽。
2. 根据权利要求 1所述的起重机防过卷开关的限位重锤， 其特征在于，
所述左半限位块的远离所述销轴的一端具有第一安装面， 所述第一安装面 上具有螺栓， 所述锁板的第一端枢接于所述螺栓上；
所述左半限位块的远离所述销轴的一端具有第二安装面上， 所述锁柱固定 连接在所述第二安装面上。
3. 根据权利要求 2所述的起重机防过卷开关的限位重锤， 其特征在于，
所述左半限位块的第一安装面与右半限位块的第二安装面在所述左半限位 块和右半限位块闭合时相互齐平。
4. 根据权利要求 2所述的起重机防过卷开关的限位重锤， 其特征在于， 所述锁板 的内表面与所述第一安装面和第二安装面贴合。
5. 根据权利要求 2所述的起重机防过卷开关的限位重锤， 其特征在于， 所述第一 安装面和第二安装面位于所述限位重锤的侧面。
6. 根据权利要求 2所述的起重机防过卷开关的限位重锤， 其特征在于， 所述左半 限位块上所述销轴所在一端还包括与所述第一安装面平行的第一切面， 所述右 半限位块上所述销轴所在的一端还包括与所述第二安装面平行的第二切面， 其 中，所述第一切面和第二切面在所述左半限位块和右半限位块闭合时相互齐平。 根据权利要求 2所述的起重机防过卷开关的限位重锤， 其特征在于， 所述左半 限位块和右半限位块的顶部分别形成吊耳， 所述限位重锤通过穿设所述吊耳的 钢丝绳悬挂并且所述左半限位块和右半限位块的顶部保持水平姿态。 根据权利要求 7所述的起重机防过卷开关的限位重锤， 其特征在于， 所述第一 安装面和第二安装面位于所述限位重锤的具有所述吊耳的所述顶面。 根据权利要求 1所述的起重机防过卷开关的限位重锤， 其特征在于， 所述螺母 为碟形螺母。 根据权利要求 1至 9中任一项所述的起重机防过卷开关的限位重锤， 其特征在 于， 所述锁板还包括在所述开口槽处设置的接纳所述螺母的沉孔。
PCT/CN2011/078076 2011-08-05 2011-08-05 起重机防过卷开关的限位重锤 WO2013020259A1 (zh)

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