WO2024055830A1 - 平衡重系统及塔式起重机 - Google Patents

平衡重系统及塔式起重机 Download PDF

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Publication number
WO2024055830A1
WO2024055830A1 PCT/CN2023/114601 CN2023114601W WO2024055830A1 WO 2024055830 A1 WO2024055830 A1 WO 2024055830A1 CN 2023114601 W CN2023114601 W CN 2023114601W WO 2024055830 A1 WO2024055830 A1 WO 2024055830A1
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WO
WIPO (PCT)
Prior art keywords
pulley
counterweight
mobile
truss structure
arm
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PCT/CN2023/114601
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English (en)
French (fr)
Inventor
喻乐康
孙旭国
李桂芳
Original Assignee
中联重科建筑起重机械有限责任公司
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Application filed by 中联重科建筑起重机械有限责任公司 filed Critical 中联重科建筑起重机械有限责任公司
Publication of WO2024055830A1 publication Critical patent/WO2024055830A1/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
    • 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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib

Definitions

  • the present application relates to tower cranes and, in particular, to a counterweight system.
  • a tower crane is involved.
  • the tower crane is a kind of lifting equipment commonly used in the current construction process. Its structure is that the tower body is equipped with a balance arm, a lifting arm and an operating room. The lifting arm is equipped with a trolley and a hook. The height of the hanging tower is generally It is relatively high and has high requirements for the stability of the pendant itself.
  • Existing tower cranes generally require a fixed balance weight at the tail of the balance arm.
  • a few tower cranes also have a moving balance weight on the balance arm.
  • the lower chord of the balance arm is used as the running guide rail
  • a luffing trolley is installed on the lower chord of the balance arm
  • the mobile balance weight is hung on the luffing trolley.
  • the luffing trolley runs back and forth on the lower chord of the balance arm to change the moving balance weight. s position.
  • the technical problem to be solved by this disclosure is to provide a counterweight system that enables a wider movement range of the movable counterweight and can relatively flexibly adjust the bending moment of the tower crane head.
  • the technical problem to be solved by the present disclosure is to provide a tower crane whose mobile counterweight system enables a wider movement range of the mobile counterweight and can relatively flexibly adjust the bending moment of the tower crane head.
  • a counterweight system on the one hand including an arm.
  • the arm includes a lifting arm and a balance arm.
  • a fixed balance weight is installed on the balance arm.
  • a fixed balance weight is installed on the arm.
  • There is a mobile balance weight the mobile balance weight is equipped with rollers that guide the movement of the mobile balance weight, the arm frame is formed with a channel for the mobile balance weight to travel, the mobile balance weight is connected to a traction mechanism to enable The mobile counterweight is driven to reciprocate on the lifting arm and the balance arm.
  • the upper part of the boom is formed with a channel for the mobile counterweight to pass through.
  • the boom is a truss structure
  • the truss structure includes an upper truss structure and a lower truss structure arranged up and down.
  • the channel is formed in the upper truss structure
  • the upper truss structure includes two parallel rods.
  • the bottom of the upper chord is a lower cover, and the two flange plates extending inward from the lower cover are formed into tracks that cooperate with the relative movement of the rollers, and the rollers are symmetrically arranged on the moving Balance the left and right sides of the weight.
  • the upper truss structure and the lower truss structure are connected through pins.
  • the traction mechanism includes a winch, a first pulley set and a second pulley set.
  • the first pulley set is installed on the lifting arm, and the second pulley set is installed on the balance arm.
  • the winch is driven by a A traction rope goes around the first pulley group and the moving
  • the front end of the counterweight is connected, and the hoist is connected to the rear end of the mobile counterweight by passing another traction rope around the second pulley group, so that the hoist can wind up one of the traction ropes at the same time.
  • the other traction rope is released simultaneously, thereby driving the mobile counterweight to move.
  • the first pulley set includes a first pulley and a second pulley.
  • the first pulley and the second pulley are installed inside the upper truss structure of the boom, and one of the traction ropes One end is connected to the hoist, and the other end is connected to the front end of the mobile counterweight by bypassing the second pulley and the first pulley in turn;
  • the second pulley set includes a third pulley and a fourth pulley, and the third pulley is The three pulleys and the fourth pulley are installed in the upper truss structure of the balance arm. One end of the other traction rope is connected to the winch, and the other end of the pulley goes around the fourth pulley and the third pulley in turn.
  • Three pulleys are connected to the rear end of the mobile counterweight.
  • the front and rear ends of the mobile counterweight are respectively provided with mounting seats for connection with the traction rope.
  • diagonal braces are provided in the lower truss structure.
  • the mobile balance weight includes several separate balance weights connected in sequence.
  • Another aspect of the present disclosure provides a tower crane provided with the mobile counterweight system described in any one of the above technical solutions.
  • the present disclosure is provided with a track and a traction mechanism. Driven by the traction mechanism, the mobile counterweight can be moved along the track, thereby reciprocating on the lifting arm and the balance arm. The movement range of the mobile counterweight is wider, thereby adjusting the The range of bending moment at the front end of the tower crane is relatively Width.
  • Figure 1 is a schematic structural diagram of a mobile counterweight system in a specific embodiment of the present disclosure
  • Figure 2 is a partial enlarged view of part A in Figure 1;
  • Figure 3 is a partial enlarged view of part B in Figure 1;
  • Figure 4 is a schematic structural diagram along direction C in Figure 2;
  • Figure 5 is a schematic structural diagram of a mobile counterweight in a specific embodiment of the present disclosure.
  • the terms “setting”, “installation” and “connection” should be understood in a broad sense.
  • it can be a fixed connection or a detachable connection.
  • Connection, or integrated connection it can be a direct connection or an indirect connection through an intermediary.
  • It can be an internal connection between two components or an internal connection between two components. interaction of components.
  • orientation terms are based on the orientation of the counterweight system in use, and its orientation is basically consistent with the orientation of the tower crane in use.
  • front and rear refer to the front and rear directions of the tower crane in use
  • up and down refer to the up and down directions of the tower crane itself.
  • the lifting arm 1 is located at the balance arm 2 4, the upper truss structure is located above the lower truss structure; the orientation or positional relationship shown in the drawings is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must be Has a specific orientation, is constructed and operates in a specific orientation and therefore is not to be construed as limiting the disclosure.
  • the present disclosure provides a counterweight system, including a boom.
  • the boom includes a lifting arm 1 and a balance arm 2.
  • a fixed balance weight 3 is installed on the balance arm 2.
  • a fixed balance weight 3 is installed on the boom.
  • the mobile counterweight 4 is equipped with rollers 41 for guiding the movement of the mobile counterweight 4.
  • the mobile counterweight 4 is connected to a traction mechanism.
  • the traction mechanism is used to drive the mobile counterweight 4 to move along the track.
  • the arm frame forms a useful The passage through which the movable counterweight 4 travels enables the movable counterweight 4 to reciprocate on the lifting arm 1 and the counterbalance arm 2.
  • the jib is erected on the tower body of the tower crane, and the tower body divides the jib into lifting parts. Arm 1 and balance arm 2.
  • the lifting load and balance arm sides are used to match The weight of the hoisted counterweight will be very large.
  • the moment on the side of the boom changes greatly, and the moment on the tower body will also be very large.
  • the mobile counterweight 4 can be moved to different positions according to different working conditions to prevent the boom from rising.
  • the movable counterweight 4 can be moved to different positions according to different working conditions.
  • the mobile counterweight 4 can be moved to the lifting arm so that the boom does not rise.
  • the mobile counterweight 4 can be moved to the counterweight arm so that the boom does not rise. Can't stand up.
  • the movement of the mobile counterweight 4 can be driven, and the track extends on the lifting arm 1 and the balance arm 2, so that the mobile counterweight 4 can move between the lifting arm 1 and the balance arm 2
  • the reciprocating motion makes the adjustment range of the bending moment of the tower crane head relatively more flexible.
  • the track is provided on the arm, and the roller 41 is provided on the movable balance weight 4.
  • the movable balance weight 4 can be moved The lifting arm 1 and the balance arm 2 move.
  • a channel can be provided at the upper part of the boom for the mobile counterweight 4 to pass through.
  • the boom is a truss structure.
  • the truss structure includes an upper truss structure and a lower truss structure.
  • the upper truss structure and the lower truss structure are arranged in the up and down direction.
  • the upper truss structure includes two upper chords 51 arranged in parallel. and two lower chords arranged in parallel, two parallel arranged The upper chord 51 and the two parallel lower chords are arranged in the up and down direction.
  • the cross section is rectangular, thereby forming a channel in the upper truss structure to facilitate the movement of the counterweight 4; the upper chord 51 and the lower chord are both hollow.
  • the rectangular cross-section beam, the bottom of the upper chord 51 is the lower cover plate 52, and the inwardly extending flange plates of the two lower cover plates 52 of the two upper chord 51 form a track, and there is no need to lay additional tracks for the mobile counterweight 4 ,
  • the rollers 41 are symmetrically arranged on the left and right sides of the movable counterweight 4, and the movement of the movable counterweight 4 is realized by rolling the rollers 41 on the track.
  • the roller 41 may be a roller with a rim.
  • the upper truss structure and the lower truss structure are connected through a pin 53 .
  • the lower truss structure is structurally similar to the upper truss structure, and its cross-section is rectangular. In the rectangular frame, diagonal braces 54 are provided to enhance the structural strength.
  • the traction mechanism includes a winch 6, a first pulley set and a second pulley set.
  • the first pulley set is installed on the lifting arm 1
  • the second pulley set is installed on the balance On the arm 2
  • the winch 6 bypasses the first pulley group and is connected to the front end of the movable counterweight 4 through a traction rope
  • the hoist 6 bypasses the second pulley group and is connected to the rear end of the movable counterweight 4 through another traction rope.
  • the winch 6 will retract one traction rope and simultaneously release the other traction rope, thereby driving the mobile counterweight 4 to move smoothly on the boom at a constant speed.
  • the winch 6 can be installed on the boom as shown in Figure 1.
  • the winch 6 can also be installed at other positions according to design needs, such as a position on the tower close to the boom.
  • the first pulley group includes a first pulley 71 and a second pulley.
  • the wheel 72, the first pulley 71 and the second pulley 72 are installed inside the upper truss structure of the boom 1, and are connected using a traction rope.
  • one end of the traction rope is connected to the winch 6, and
  • the other end of the traction rope is sequentially wound around the second pulley 72 and the first pulley 71 and connected to the front end of the movable balance weight 4.
  • the front end of the movable balance weight 4 is provided with a mounting base 42.
  • the mounting base 42 is For connecting with the traction rope, the mounting base 42 can be an ear plate, with a mounting hole provided on the ear plate, and the traction rope is tied to the mounting hole; as shown in Figure 3, the second pulley group includes a third pulley 73 and a fourth pulley 74.
  • the third pulley 73 and the fourth pulley 74 are installed inside the upper truss structure of the balance arm 2, and are connected using another traction rope. Specifically, one end of the other traction rope is connected to the winch 6, and the other traction rope is connected to the winch 6. The other end of a traction rope sequentially bypasses the fourth pulley 74 and the third pulley 73 and is connected to the rear end of the mobile balance weight 4.
  • the rear end of the mobile balance weight 4 is also provided with a mounting base 42.
  • the mounting base 42 is used to connect with the traction rope
  • the mounting base 42 can be an ear plate, a mounting hole is provided on the ear plate, and the traction rope is tied to the installation hole.
  • the traction rope is preferably a steel wire rope.
  • the mobile balance weight 4 can be designed to be composed of multiple small balance weights, and the weight of the mobile balance weight 4 can be adjusted by increasing or decreasing the number of balance weights.
  • the mobile balance weight 4 is composed of several split balance weights connected in sequence. Hooks are provided on the outer sides of the split balance weights, and adjacent split balance weights are connected through the hooks.
  • the balance weight system in the preferred embodiment of the present disclosure includes an arm
  • the boom includes a lifting arm 1 and a balance arm 2.
  • the balance arm 2 is equipped with a fixed balance weight 3, and the boom is equipped with a movable balance weight 4.
  • the boom is a truss structure, and the upper truss structure includes two parallel ones.
  • the upper chord 51 and two parallel lower chords are arranged in the up and down direction to form a channel in the upper truss structure. Both the upper chord 51 and the lower chord are hollow.
  • the bottom of the upper chord 51 is the lower cover plate 52, and the inwardly extending flange plates of the two lower cover plates 52 of the two upper chord rods 51 are formed as guide rails, and there is no need to lay additional movable counterweights 4
  • the rollers 41 are symmetrically arranged on the left and right sides of the mobile counterweight 4, and the rollers 41 roll on the guide rails to guide the movement of the mobile counterweight 4.
  • the mobile counterweight 4 is designed to run from the rear end of the balance arm to the front end of the boom, with a wider range of movement, which can balance the bending moment of the tower crane's head and adjust the bending moment of the tower crane's head more flexibly.
  • the mobile counterweight 4 is located in the upper part of the internal space of the lifting arm 1 and the counterweight arm 2, making installation, disassembly, inspection and maintenance convenient and safe.
  • the present disclosure also provides a tower crane, which adopts the above-mentioned embodiments.
  • the counterweight system in the example therefore has the technical effects of the counterweight systems in the above-mentioned embodiments.
  • any combination of various embodiments of the present disclosure can also be carried out, and as long as they do not violate the idea of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.

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

Abstract

一种平衡重系统及塔式起重机，该平衡重系统包括臂架，臂架包括起重臂（1）和平衡臂（2），平衡臂（2）上安装有固定平衡重（3），臂架上安装有移动平衡重（4），移动平衡重（4）安装有引导移动平衡重（4）移动的滚轮（41），臂架形成有用于移动平衡重（4）穿行的通道，移动平衡重（4）与牵引机构连接，以能够驱动移动平衡重（4）在起重臂（1）与平衡臂（2）上往复运动。

Description

平衡重系统及塔式起重机
相关申请的交叉引用
本申请要求2022年09月15日提交的中国专利申请202222449271.8的权益，该申请的内容通过引用被合并于本文。
技术领域
本申请涉及塔机，具体地，涉及一种平衡重系统。此外，还涉及一种塔式起重机。
背景技术
塔机是目前建筑施工过程中常用的一种起重设备，其结构是在塔身上设有平衡臂、起重臂和操作室，起重臂上设有小车和吊钩，吊塔的高度一般比较高，对于吊塔自身的稳定性具有较高的要求。
现有的塔机一般需要在平衡臂的尾部固定平衡重，为了降低塔机头部弯矩，少数塔机还会在平衡臂上设置移动平衡重。具体地，以平衡臂下弦杆作为运行导轨，在平衡臂下弦杆上安装变幅小车，移动平衡重挂在变幅小车上，通过变幅小车在平衡臂下弦杆上前后运行，改变移动平衡重的位置。
但是，这种设计调节塔机头部弯矩的能力相对受限。
发明内容
本公开所要解决的技术问题是提供一种平衡重系统，该平衡重系统使移动平衡重的移动范围更广，能够相对更灵活调节塔机头部弯矩。
本公开还要解决的技术问题是提供一种塔式起重机，该塔式起重机的移动平衡重系统使移动平衡重的移动范围更广，能够相对更灵活调节塔机头部弯矩。
为了解决上述技术问题，本公开一方面提供一种平衡重系统，包括臂架，所述臂架包括起重臂和平衡臂，所述平衡臂上安装有固定平衡重，所述臂架上安装有移动平衡重，所述移动平衡重安装有引导所述移动平衡重移动的滚轮，所述臂架形成有用于所述移动平衡重穿行的通道，所述移动平衡重与牵引机构连接，以能够驱动所述移动平衡重在所述起重臂与所述平衡臂上往复运动。
可选地，所述臂架上部形成有用于所述移动平衡重穿行的通道。
进一步地，所述臂架为桁架结构，所述桁架结构包括上下布置的上部桁架结构和下部桁架结构，所述上部桁架结构内形成有所述通道，且所述上部桁架结构包括两根平行布置的上弦杆，所述上弦杆底部为下盖板，两个所述下盖板向内伸出的翼缘板形成为与所述滚轮相对移动配合的轨道，所述滚轮对称布置在所述移动平衡重的左右两侧。
更进一步地，所述上部桁架结构和所述下部桁架结构之间通过销轴连接。
具体地，所述牵引机构包括卷扬机、第一滑轮组和第二滑轮组，所述第一滑轮组安装在所述起重臂上，所述第二滑轮组安装在所述平衡臂上，所述卷扬机通过一根牵引绳绕过所述第一滑轮组与所述移动 平衡重的前端连接，且所述卷扬机通过另一根牵引绳绕过所述第二滑轮组与所述移动平衡重的后端连接，以能够使所述卷扬机卷收一根所述牵引绳的同时同步释放另一根所述牵引绳，从而驱动所述移动平衡重移动。
更具体地，所述第一滑轮组包括第一滑轮和第二滑轮，所述第一滑轮和所述第二滑轮安装在所述起重臂的所述上部桁架结构内部，一根所述牵引绳的一端与所述卷扬机连接，其另一端依次绕过所述第二滑轮和第一滑轮与所述移动平衡重的前端连接；所述第二滑轮组包括第三滑轮和第四滑轮，所述第三滑轮和所述第四滑轮安装在所述平衡臂的所述上部桁架结构内，另一根所述牵引绳的一端与所述卷扬机连接，其另一端依次绕过所述第四滑轮和第三滑轮与所述移动平衡重的后端连接。
可选地，所述移动平衡重的前后端分别设置有用于与所述牵引绳连接的安装座。
可选地，所述下部桁架结构内设置有斜撑杆。
可选地，所述移动平衡重包括若干依次相连的分体平衡重块。
本公开另一方面提供一种塔式起重机，设置有上述技术方案中任一项所述的移动平衡重系统。
通过上述技术方案，本公开的有益效果如下：
本公开设置了轨道和牵引机构，在牵引机构的驱动下，可以使移动平衡重移动沿着轨道移动，从而在起重臂与平衡臂上往复运动，移动平衡重的移动范围更广，从而调节塔机前端头部弯矩的范围相对较 宽。
本公开的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是本公开具体实施方式中的移动平衡重系统的结构示意图；
图2是图1中A部分的局部放大图；
图3是图1中B部分的局部放大图；
图4是图2中沿C方向的结构示意图；
图5是本公开具体实施方式中的移动平衡重的结构示意图。
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，本公开的保护范围并不局限于下述的具体实施方式。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或者是一体连接；可以是直接连接，也可以是通过中间媒介间接连接，可以是两个元件内部的连通或两个 元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
此外，术语“第一”、“第二”、“第三”、“第四”等仅用于描述的目的，而不能理解为指示或暗示相对重要性或隐含指明所指示的技术特征的数量，因此，限定有“第一”、“第二”、“第三”、“第四”等的特征可以明示或隐含地包括一个或更多个所述特征。
在本公开的描述中，需要理解的是，方位术语以平衡重系统使用状态的方位为基准，其使用的方位与塔式起重机在使用状态时的方位基本一致，为了便于描述本公开和简化描述，术语“前、后”是指塔式起重机在使用状态中的前后方向，术语“上、下”是指塔式起重机自身的上下方向，例如，参照图1，起重臂1位于平衡臂2的前方，参照图4，上部桁架结构位于下部桁架结构的上方；附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
如图1至图5所示，本公开提供了一种平衡重系统，包括臂架，臂架包括起重臂1和平衡臂2，平衡臂2上安装有固定平衡重3，臂架上安装有移动平衡重4，移动平衡重4安装有用于引导移动平衡重4移动的滚轮41，移动平衡重4与牵引机构连接，牵引机构用于驱动移动平衡重4沿着轨道移动，臂架形成有用于移动平衡重4穿行的通道，从而实现移动平衡重4在起重臂1与平衡臂2上进行往复运动。
通常地，臂架架设在塔式起重机的塔身上，塔身将臂架分为起重 臂1和平衡臂2两部分。在一些大型甚至超大型塔式起重机(例如，应用于风电、核电设施等)的应用中，尤其是行走式(例如履带式)塔式起重机的应用中，吊载和平衡臂侧的用于匹配吊载的平衡重的重量会很大，在这种塔式起重机起吊过程中，起重臂侧的力矩变化较大，对塔身作用的力矩也会很大。在正常吊载的情况下，根据不同工况可以将移动平衡重4移动到不同位置，使臂架不上扬，例如，当起重力矩小于固定平衡重作用在臂架上的力矩时，可以将移动平衡重4移动到起重臂上，使臂架不上扬，或者，当起重力矩大于固定平衡重作用在臂架上的力矩时，可以将移动平衡重4移动到平衡臂上，使臂架不上扬。
在上述技术方案中，通过牵引机构的设置，可以驱动移动平衡重4的移动，轨道在起重臂1与平衡臂2上延伸，从而使移动平衡重4能够在起重臂1与平衡臂2上进行往复运动，使得塔机头部弯矩的调节范围相对更灵活。
在本公开的具体实施例中，如图4所示，轨道设置在臂架上，滚轮41设置在移动平衡重4上，在轨道和滚轮41两者的配合下，使得移动平衡重4能够在起重臂1与平衡臂2上进行移动。
一般地，对于臂架上的用于移动平衡重4穿行的通道的设置，可以在臂架的上部设置通道，用于移动平衡重4穿行。具体地，如图4所示，臂架为桁架结构，桁架结构包括上部桁架结构和下部桁架结构，上部桁架结构和下部桁架结构沿上下方向布置，上部桁架结构包括两根平行布置的上弦杆51和两根平行布置的下弦杆，两根平行布置的 上弦杆51和两根平行布置的下弦杆按照上下方向布置，从截面看去，截面呈矩形，从而使上部桁架结构内形成通道，便于移动平衡重4穿行；上弦杆51和下弦杆均为中空的矩形截面梁，上弦杆51的底部为下盖板52，两根上弦杆51的两个下盖板52向内伸出的翼缘板形成为轨道，不需要额外为移动平衡重4铺设轨道，相对应地，滚轮41对称布置在移动平衡重4的左右两侧，通过滚轮41在轨道上滚动，实现移动平衡重4的移动。其中，滚轮41可以为带轮缘的滚轮。
在本公开的具体实施例中，如图1至图4所示，上部桁架结构和下部桁架结构之间通过销轴53连接。下部桁架结构在结构上与上部桁架结构比较近似，其截面呈矩形，在矩形框中，设置斜撑杆54，以增强结构强度。
作为牵引机构的一种具体结构形式，如图1至图3所示，牵引机构包括卷扬机6、第一滑轮组和第二滑轮组，第一滑轮组安装在起重臂1上，第二滑轮组安装在平衡臂2上，卷扬机6通过一根牵引绳绕过第一滑轮组与移动平衡重4的前端连接，且卷扬机6通过另一根牵引绳绕过第二滑轮组与移动平衡重4的后端连接，在控制移动平衡重4移动的过程中，卷扬机6卷收一根牵引绳的同时，还会同步释放另一根牵引绳，从而驱动移动平衡重4匀速平稳地在臂架上移动。其中，在优选情况下，可以如图1所示，将卷扬机6安装在臂架上，当然，也可以根据设计的需要，将卷扬机6安装在其它位置，如塔身上靠近臂架的位置。
进一步地，如图2所示，第一滑轮组包括第一滑轮71和第二滑 轮72，第一滑轮71和第二滑轮72安装在起重臂1的上部桁架结构的内部，，使用一根牵引绳进行连接，具体地，将一根牵引绳的一端与卷扬机6连接，并将该根牵引绳另一端依次绕过第二滑轮72和第一滑轮71与移动平衡重4的前端连接，如图5所示，移动平衡重4的前端设置有安装座42，安装座42用于与牵引绳连接，安装座42可以为耳板，在耳板上设置安装孔，牵引绳绑扎在安装孔上；如图3所示，第二滑轮组包括第三滑轮73和第四滑轮74，第三滑轮73第四滑轮74安装在平衡臂2的上部桁架结构的内部，，使用另一根牵引绳进行连接，具体地，将另一根牵引绳的一端与卷扬机6连接，并将该另一根牵引绳另一端依次绕过第四滑轮74和第三滑轮73与移动平衡重4的后端连接，如图5所示，移动平衡重4的后端也设置有安装座42，安装座42用于与牵引绳连接，安装座42可以为耳板，在耳板上设置安装孔，牵引绳绑扎在安装孔上。其中，牵引绳优选为钢丝绳。
在本公开的具体实施例中，可以将移动平衡重4设计为由多个小的平衡重块组成，通过增减平衡重块的数量，调节移动平衡重4的重量。具体地，如图5所示，移动平衡重4由若干依次相连的分体平衡重块组成，分体平衡重块的外侧面设置挂钩，通过挂钩将相邻的分体平衡重块相连接。
为了更好地理解本公开的技术构思，下面结合相对全面的技术特征对本公开的技术方案进行描述。
如图1至图5所示，本公开优选实施例中的平衡重系统，包括臂 架，臂架包括起重臂1和平衡臂2，平衡臂2上设置有固定平衡重3，臂架上安装有移动平衡重4，臂架为桁架结构，上部桁架结构包括两根平行布置的上弦杆51和两根平行布置的下弦杆，两根平行布置的上弦杆51和两根平行布置的下弦杆按照上下方向布置，使上部桁架结构内形成通道，上弦杆51和下弦杆均为中空的矩形金属管，上弦杆51的底部为下盖板52，两根上弦杆51的两个下盖板52向内伸出的翼缘板形成为导向轨道，不需要额外为移动平衡重4铺设轨道，相对应地，滚轮41对称布置在移动平衡重4的左右两侧，通过滚轮41在导向轨道上滚动，引导移动平衡重4的移动。在臂架上设置卷扬机6，使用一根牵引绳进行连接，将一根牵引绳的一端与卷扬机6连接，并将该根牵引绳另一端依次绕过第二滑轮72和第一滑轮71与移动平衡重4的前端的安装座42连接，使用另一根牵引绳进行连接，将另一根牵引绳的一端与卷扬机6连接，并将该另一根牵引绳另一端依次绕过第四滑轮74和第三滑轮73与移动平衡重4的后端的安装座42连接，在控制移动平衡重4移动的过程中，卷扬机6卷收一根牵引绳的同时，还会同步释放另一根牵引绳，从而驱动移动平衡重4匀速平稳地在臂架上移动。
将移动平衡重4设计为可以从平衡臂后端运行到起重臂的前端，移动的范围更广，可以平衡塔机的头部弯矩，更灵活地调节的塔机头部弯矩。移动平衡重4位于起重臂1和平衡臂2内部空间的上部分，安拆、检查和维护方便安全。
本公开还提供了一种塔式起重机，该塔式起重机采用上述各实施 例中的平衡重系统，因此，具有上述各实施例中的平衡重系统的技术效果。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。

Claims (10)

  1. 一种平衡重系统，包括臂架，其特征在于，所述臂架包括起重臂(1)和平衡臂(2)，所述平衡臂(2)上安装有固定平衡重(3)，所述臂架上安装有移动平衡重(4)，所述移动平衡重(4)安装有引导所述移动平衡重(4)移动的滚轮(41)，所述臂架形成有用于所述移动平衡重(4)穿行的通道，所述移动平衡重(4)与牵引机构连接，以能够驱动所述移动平衡重(4)在所述起重臂(1)与所述平衡臂(2)上往复运动。
  2. 根据权利要求1所述的平衡重系统，其特征在于，所述臂架上部形成有用于所述移动平衡重(4)穿行的通道。
  3. 根据权利要求1所述的平衡重系统，其特征在于，所述臂架为桁架结构，所述桁架结构包括上下布置的上部桁架结构和下部桁架结构，所述上部桁架结构内形成有所述通道，且所述上部桁架结构包括两根平行布置的上弦杆(51)，所述上弦杆(51)底部为下盖板(52)，两个所述下盖板(52)向内伸出的翼缘板形成为与所述滚轮(41)相对移动配合的轨道，所述滚轮(41)对称布置在所述移动平衡重(4)的左右两侧。
  4. 根据权利要求3所述的平衡重系统，其特征在于，所述上部桁架结构和所述下部桁架结构之间通过销轴(53)连接。
  5. 根据权利要求4所述的平衡重系统，其特征在于，所述牵引机构包括卷扬机(6)、第一滑轮组和第二滑轮组，所述第一滑轮组安装在所述起重臂(1)上，所述第二滑轮组安装在所述平衡臂(2)上，所述卷扬机(6)通过一根牵引绳绕过所述第一滑轮组与所述移动平衡重(4)的前端连接，且所述卷扬机(6)通过另一根牵引绳绕过所述第二滑轮组与所述移动平衡重(4)的后端连接，以能够使所述卷扬机(6)卷收一根所述牵引绳的同时同步释放另一根所述牵引绳，从而驱动所述移动平衡重(4)移动。
  6. 根据权利要求5所述的平衡重系统，其特征在于，所述第一滑轮组包括第一滑轮(71)和第二滑轮(72)，所述第一滑轮(71)和所述第二滑轮(72)安装在所述起重臂(1)的所述上部桁架结构的内部，一根所述牵引绳的一端与所述卷扬机(6)连接，其另一端依次绕过所述第二滑轮(72)和第一滑轮(71)与所述移动平衡重(4)的前端连接；所述第二滑轮组包括第三滑轮(73)和第四滑轮(74)，所述第三滑轮(73)和所述第四滑轮(74)安装在所述平衡臂(2)的所述上部桁架结构的内部，另一根所述牵引绳的一端与所述卷扬机(6)连接，其另一端依次绕过所述第四滑轮(74)和第三滑轮(73)与所述移动平衡重(4)的后端连接。
  7. 根据权利要求5所述的平衡重系统，其特征在于，所述移动 平衡重(4)的前后端分别设置有用于与所述牵引绳连接的安装座(42)。
  8. 根据权利要求3至7中任一项所述的平衡重系统，其特征在于，所述下部桁架结构内设置有斜撑杆(54)。
  9. 根据权利要求1至7中任一项所述的平衡重系统，其特征在于，所述移动平衡重(4)包括若干依次相连的分体平衡重块。
  10. 一种塔式起重机，其特征在于，设置有权利要求1至9中任一项所述的平衡重系统。
PCT/CN2023/114601 2022-09-15 2023-08-24 平衡重系统及塔式起重机 WO2024055830A1 (zh)

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