WO2019011318A1 - 可实现整体顶升和局部顶升的顶升钢平台的控制方法 - Google Patents

可实现整体顶升和局部顶升的顶升钢平台的控制方法 Download PDF

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WO2019011318A1
WO2019011318A1 PCT/CN2018/095590 CN2018095590W WO2019011318A1 WO 2019011318 A1 WO2019011318 A1 WO 2019011318A1 CN 2018095590 W CN2018095590 W CN 2018095590W WO 2019011318 A1 WO2019011318 A1 WO 2019011318A1
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jacking
cylinder
oil
hydraulic
main
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PCT/CN2018/095590
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English (en)
French (fr)
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陈跃熙
丁云波
张锐
胡宁
徐永亮
徐帅
周可
刘奕
陈舜
李绍俊
刘�东
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四川华西集团有限公司
中国华西企业有限公司
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Publication of WO2019011318A1 publication Critical patent/WO2019011318A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails

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  • the invention relates to a control technology for jacking of a high-rise building, in particular to a control method for a jack-up steel platform capable of achieving overall jacking and partial jacking.
  • Super high-rises usually refer to buildings with more than 40 floors or more than 200 meters in height. And the super high-rise generally adopts a cylinder structure and a steel structure. At present, the construction of super high-rise buildings in China generally adopts the overall climbing steel platform formwork system of Shanghai Construction Engineering and the large-top formwork frame system of Chinese architecture.
  • the shortcoming of the climbing control of the formwork system commonly used in the construction of super high-rise buildings in China is that it is too integrated, and it can only be carried out at the same time. Because the over-integrated system must rise together, such as any part of the rise of the formwork If the fault or the construction period lags, it must be stopped and processed to carry out the next step, which will cause further lag effect on the construction period.
  • the integrated control system needs special design, the used system and parts are specially customized, and the energy consumption is high. And the control system has very low reuse rate at different sites.
  • the technical problem to be solved by the present invention is that the control of the existing super high-rise steel platform can only be carried out as a whole, which causes great limitations, high energy consumption, and low reuse rate of the control system at different construction sites.
  • the invention provides a control method for a jacking steel platform capable of achieving overall jacking and partial jacking.
  • the control method can perform overall jacking and partial jacking of the steel platform, thereby greatly improving precise control during use thereof.
  • the steel platform in different positions needs to be lifted and does not affect the overall construction progress.
  • a control method for a jacking steel platform that can achieve overall jacking and partial jacking, comprising the following steps:
  • N is a natural number in 1, 2, 3, etc.
  • the steel platform of the formwork system commonly used in the construction of super high-rise buildings in China is an integral steel platform.
  • the steel platform basically covers the top surface of the whole building.
  • the control system of the jacking also needs special design and use.
  • the system and parts are specially customized, the energy consumption is high, and the repetitive utilization rate of the control system at different sites is extremely low, and because the over-integrated system must be lifted together, if any part of the mold frame rises or fails If the construction period lags, it must be stopped and processed before it can carry out the next step, causing further lag effects on the construction period.
  • the jacking force and power during jacking it is very demanding, which in turn increases the cost.
  • the current control system and control method are formed by separating the steel platform into multiple modules. In this case, the steel platform cannot meet the requirement of local jacking.
  • the scheme is designed to control the jacking steel platform that can achieve overall jacking and partial jacking.
  • This control method can be better combined with the control system. It meets the jacking requirements of the assembled steel platform, and it has the functions of overall jacking and partial jacking. It also satisfies the reuse of the control system and is more in line with the requirements of green construction, which better solves the needs of the jacking system. Special customization, high energy consumption, high cost, and extremely low reuse rate at different sites.
  • the platform is designed into multiple units, each unit adopts independent hydraulic system.
  • This hydraulic system is a mature and standard system in the construction market. It does not need special design. Under normal circumstances, it is realized by electrical total control. Under normal circumstances, the whole ascends together; when encountering a problem caused by the construction of a certain node, when a partial jacking is required, multiple units can select any combination according to the hysteresis part, and the unit with the hysteresis problem stops processing and lags. The problem, the remaining units continue to rise and not affected, so that the construction can continue in accordance with the running water, to avoid the chain effect of the work and construction delay.
  • a set of hydraulic control units In order to achieve local jacking, a set of hydraulic control units must be set for each platform unit in the platform unit, so that the position can be achieved and accurate when jacking up.
  • each hydraulic control unit has any of the following states:
  • the manual reversing valve In the motor starting state, the manual reversing valve is in the middle "H" position, the motor starts to drive the oil pump to work, the hydraulic oil enters the oil pump through the oil filter and returns to the oil tank through the intermediate position of the reversing valve, and the system is in the unloading state;
  • the manual reversing valve handle In the motor starting state, the manual reversing valve handle is moved to the rising position, the high-pressure oil enters the large cavity of the cylinder through the high-pressure hose, and the cylinder is pushed up.
  • the system pressure is set by the high-pressure relief valve, and the hydraulic oil of the small cylinder of the cylinder passes through the low-pressure oil pipe to the balancing valve.
  • the balance valve causes the oil to generate back pressure, so that the cylinder rises smoothly, and returns to the fuel tank after the manual reversing valve.
  • the jacking speed and synchronism of the cylinder are adjusted by the throttle valve, and the general cylinder is four, and each factory is shipped. The cylinders of one unit are adjusted;
  • the manual reversing valve handle In the motor starting state, the manual reversing valve handle is moved to the falling position, the hydraulic oil enters the small chamber of the cylinder through the low pressure hose and the hydraulic lock controls the oil chamber, the control oil pushes the hydraulic lock, and the large cylinder oil flows through the throttle valve and the hydraulic lock.
  • the system pressure is set by the low pressure relief valve, and the cylinder recovery speed is set by the throttle valve;
  • the invention has the following advantages and beneficial effects: the control method can perform overall jacking and partial jacking on the steel platform, greatly improving the precise control during use thereof, and satisfying the steel platform at different positions.
  • the jacking needs, so as not to affect the overall construction progress.
  • Figure 1 is a hydraulic electrical control circuit diagram of the present invention
  • Figure 2 is a hydraulic electrical control circuit diagram of the present invention
  • Figure 3 is a schematic diagram of the working principle of the hydraulic system
  • Figure 4 is a schematic view of the structure of the cylinder
  • Figure 5 is a plan view of Figure 4.
  • Figure 6 is a schematic diagram of the working principle of the cylinder.
  • 1-start switch 2-manual reversing valve, 3-motor, 4-hydraulic lock, 5-combination valve, 6-pressure gauge, 7-tank, 8-throttle, 9-oil pump, 10-safety valve, 11-High pressure relief valve, 12-manual ball valve.
  • a control method of the jacking steel platform for overall jacking and partial jacking can be realized, and each platform unit in the platform unit is correspondingly provided with a group of hydraulic control units.
  • This scheme takes the super high-rise of six jacking units as an example.
  • the first unit is taken as an example:
  • each hydraulic system includes a fuel tank 7, and a motor 3, a manual reversing valve 2, a combination valve 5, and a pressure gauge 6 are installed above the fuel tank 7.
  • a start switch 1 is mounted on the motor 3, and in the hydraulic system, the motor 3 is connected to the oil pump 9, and the oil pump 9 is sequentially connected to the safety valve 10, the high pressure relief valve 11, the manual reversing valve 2, and the combination valve 5, and then sequentially and sequentially After connecting the manual ball valve 12, the throttle valve 8 and the hydraulic lock 4, it is connected to the jacking cylinder.
  • each hydraulic control unit has any of the following states:
  • the handle of the manual reversing valve 2 is moved to the rising position, the high-pressure oil enters the large cavity of the cylinder through the high-pressure hose, and the cylinder is pushed up, the system pressure is set by the high-pressure relief valve 11, and the hydraulic oil of the small cylinder of the cylinder passes through the low-pressure oil pipe.
  • the balance valve causes the oil to generate back pressure, so that the cylinder rises smoothly, and returns to the fuel tank 7 after the manual reversing valve.
  • the jacking speed and synchronism of the four cylinders are adjusted by the throttle valve 8, and each time before leaving the factory The cylinders of one unit are adjusted;
  • the manual reversing valve 2 handle In the starting state of the motor 3, the manual reversing valve 2 handle is moved to the falling position, the hydraulic oil enters the small cavity of the cylinder through the low pressure rubber hose and the hydraulic lock controls the oil chamber, the control oil pushes the hydraulic lock, and the oil in the large cavity of the oil cylinder passes through the throttle valve 8
  • the hydraulic lock 4 is returned to the oil tank 7 to retract the cylinder, the system pressure is set by the low pressure relief valve, and the cylinder recovery speed is set by the throttle valve 8;
  • the principle of the hydraulic system is the same unit, and the six hydraulic control operators operate in the same position in the operation position of the six hydraulic control units to perform the jacking operation.
  • the operation of the unit can be stopped immediately, and the remaining units can continue to be lifted without being affected; since the hydraulic system and cylinder of each unit can be completely interchanged, it can be used nearby. After the completed system or cylinder is replaced, the lifting operation is completed, and the impact on the construction period is minimized.
  • the state of the hydraulic system in the hydraulic control unit coincides with the state mentioned in Embodiment 1.
  • this scheme takes the super high-rise of six jacking units as an example.
  • the first unit, the second unit and the third unit are simultaneously jacked up as an example. :
  • the principle of the hydraulic system is the same unit, and the three liquid control operators operate in the same position in the operation position of the three hydraulic control units to perform the jacking operation.
  • the three liquid control operators operate in the same position in the operation position of the three hydraulic control units to perform the jacking operation.
  • other conditions are encountered: when any two units, four units, or five units are required to be simultaneously jacked up, it is similar to the operation of this embodiment.
  • the state of the hydraulic system in the hydraulic control unit coincides with the state mentioned in Embodiment 1.
  • the invention better solves the problem that the jacking system needs special customization, high energy consumption and high cost. Since each unit adopts a separate hydraulic system and is a mature standard system for the construction market, no special customization is required. When a project is completed, each unit has an independent hydraulic and electronic control system, and each unit can meet the corresponding requirements.
  • the need for ordinary high-rise building construction has greatly improved the utilization of control and hydraulic jacking systems. In the event of an unexpected failure during the jacking operation, the system and the cylinders that are used can be completely interchanged to complete the jacking operation, which will not have a significant impact on the construction period. Since the jacking system is evenly arranged in each unit, the concentrated load of the structure is reduced and the platform structure is stressed and the bearing capacity is greater.

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  • Physics & Mathematics (AREA)
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Abstract

可实现整体顶升和局部顶升的顶升钢平台的控制方法，先合上N个主电源开关、N个控制变压器电源开关和N个控制线路开关；启动时按下与上述控制线路开关连接的电磁起动器上对应的启动开关，对应的主接触器线圈得电吸合，该主接触器常开辅助头闭合自锁、主接触器主触头闭合，对应的电动机得电启动并连续运转；停止时按下与上述控制线路开关连接的电磁启动器上的停止开关，对应的主接触器线圈失电断开，该主接触器自锁触头分断、主接触器主触头分断，对应的电动机失电停止运转。能够对钢平台进行整体顶升和局部顶升，大大提高其使用过程中的精确控制，满足不同位置的钢平台顶升需要，不影响整体的施工进度。

Description

可实现整体顶升和局部顶升的顶升钢平台的控制方法 技术领域
本发明涉及一种高层建筑顶升的控制技术，具体涉及一种可实现整体顶升和局部顶升的顶升钢平台的控制方法。
背景技术
超高层通常指40层以上或高度200米以上的建筑。并且超高层一般采用筒体结构以及钢结构。目前国内超高层建筑施工普遍采用上海建工的整体爬升钢平台模架体系和中国建筑的大顶模模架体系。
目前国内超高层建筑施工普遍采用的模架体系爬升控制的缺点是过于集成，只能是同时进行整体顶升，由于过于集成系统必须一起顶升，如遇到模架顶升中任一环节出现故障或工期滞后，都必须停下处理好方能进行下一步工作，对工期造成进一步的滞后影响，而且集成式的控制系统需要采用特殊设计，使用的系统和零件均为特殊定制，能耗高、且控制系统在不同工地的重复利用率极低。
发明内容
本发明所要解决的技术问题是现有超高层钢平台的控制只能进行整体顶升，造成很大的局限性，其能耗高、且控制系统在不同工地的重复利用率极低，其目的在于提供一种可实现整体顶升和局部顶升的顶升钢平台的控制方法，这种控制方法能够对钢平台进行整体顶升和局部顶升，大大提高其使用过程中的精确控制，满足不同位置的钢平台顶升需要，并且不影响整体的施工进度。
本发明通过下述技术方案实现：
可实现整体顶升和局部顶升的顶升钢平台的控制方法，包括以下步骤：
(1)根据需要顶升的工作平台单元的顶升单元位置和数量，开启对应的液压控制单元；
(2)先合上N个主电源开关、N个控制变压器电源开关和N个控制线路开关(N为1、2、3……中的自然数)；
(3)启动时，按下与上述控制线路开关连接的电磁起动器上对应的启动开关，使得对应的主接触器线圈得电吸合，从而该主接触器常开辅助头闭合自锁、主接触器主触头闭合，然后对应的电动机得电启动并连续运转；
(4)停止时按下与上述控制线路开关连接的电磁启动器上的停止开关，使得对应的主接触器线圈失电断开，从而该主接触器的自锁触头分断、主接触器主触头分断，然后对应的电动机失电停止运转。
目前国内超高层建筑施工普遍采用的模架体系的钢平台都是整体钢平台，这种钢平台基本是覆盖整个建筑的顶面，对应地，其顶升的控制系统也需要采用特殊设计，使用的系统和零件均为特殊定制，能耗高、且控制系统在不同工地的重复利用率极低，而且由于过于集成系统必须一起顶升，如遇到模架顶升中任一环节出现故障或工期滞后，都必须停下处理好方能进行下一步工作，对工期造成进一步的滞后影响。同时对于顶升时的顶升力和功率，都要求很大，无形中又增大了成本。随着超高层施工技术的进步，整体式钢平台的缺陷也越来越明显，因此人们有意识地开始设计组装式钢平台，目前的控制系统和控制方法对于将钢平台分开为多个模块组合形成的钢平台，无法实现局部顶升的需求，针对这一情况，本方案设计了可实现整体顶升和局部顶升的顶升钢平台的控制方法，这种控制方法结合控制系统，能够更好的满足组装式钢平台顶升需求，其具备整体顶升和局部顶升的功能，同时也更能满足控制系统的重复利用，也更符合绿色施工的要求，较好的解决了顶升系统需要特殊定制，能耗高、造价高，且在不同工地的重复利用率极低现象。
根据核心筒的结构图将平台设计成多个单元，每个单元采用均独立的液压系统，这种液压系统为建筑市场通用成熟的标准系统，不需特殊设计，正常情况下通过电气总控实现正常情况下整体一起顶升；当遇到了某个节点施工出现问题造成滞后现象，需要局部顶升时，多个单元便可根据滞后部位选择任意的组合，对有滞后问题的单元停下处理滞后问题，其余单元继续顶升不受影响，使施工能够按照流水继续进行，避免窝工和工期滞后带来连锁影响。
为了能够实现局部顶升，必须将平台单元中每个平台单元对应设置一组液压控制单元，这样顶升时才能够实现到位和准确。
而在平台单元对应的液压控制单元启动后，每个液压控制单元中的液压系统有以下任意一种状态：
(1)、液压系统卸荷状态：
在电机启动状态，手动换向阀处于中间“H”位置，电机启动带动油泵工作，液压油经滤油器进入油泵再经换向阀中间位置回到油箱，此时系统处于卸荷状态；
(2)、油缸顶升状态：
在电机启动状态，手动换向阀手柄移到上升位，高压油经高压胶管进入油缸大腔，推动油缸上升，系统压力由高压溢流阀调定，油缸小腔液压油经低压油管至平衡阀，平衡阀使油液产生背压，使油缸上升平稳，经手动换向阀后回到油箱，油缸的顶升速度和同步性通过节流阀进行调节，一般油缸为四个，并且出厂前每一单元的油缸均进行了调节；
(3)、油缸收回状态：
在电机启动状态，手动换向阀手柄移到下降位，液压油经低压胶管进入油缸小腔与液压 锁控制油腔，控制油推开液压锁，油缸大腔油液经节流阀、液压锁回到油箱，使油缸收回，系统压力由低压溢流阀调定，油缸收回速度由节流阀调定；
(4)、停机或意外故障状态：
(a)带负荷或油缸顶升状态的停机或意外故障：固定在油缸上的液压锁将油液锁在油缸大腔，使得油缸不发生位移；
(b)无负荷或油缸收回状态的停机：小腔油液保留了平衡阀设定压力，使顶升下支座部分自重不会将油缸活塞杆拉出。
上述几种状态，都是液压系统根据顶升过程中得出到的状态，保证使用时的安全性。
本发明与现有技术相比，具有如下的优点和有益效果：这种控制方法能够对钢平台进行整体顶升和局部顶升，大大提高其使用过程中的精确控制，满足不同位置的钢平台顶升需要，从而不影响整体的施工进度。
附图说明
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，并不构成对本发明实施例的限定。在附图中：
图1为本发明的液压电气控制线路图；
图2为本发明的液压电气控制线路图；
图3为液压系统工作原理图；
图4为油缸结构示意图；
图5为图4的俯视图；
图6为油缸工作原理图。
附图中标记及对应的零部件名称：
1-启动开关，2-手动换向阀，3-电机，4-液压锁，5-组合阀，6-压力表，7-油箱，8-节流阀，9-油泵，10-安全阀，11-高压溢流阀，12-手动球阀。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白，下面结合实施例和附图，对本发明作进一步的详细说明，本发明的示意性实施方式及其说明仅用于解释本发明，并不作为对本发明的限定。
实施例1：
如图1至图3所示，可实现整体顶升和局部顶升的顶升钢平台的控制方法，平台单元中每个平台单元对应设置一组液压控制单元。
本方案以六个顶升单元的超高层为例，在需要任意一个单元顶升时(以第一单元为例)：
(1)先合上主电源开关1QF1、控制变压器电源开关TS1Di和控制线路开关1QF2；
(2)启动时，按下与上述控制线路相关的的电磁起动器上的启动开关1SB 1，使1KM1主接触器线圈得电吸合并带动1KM1主接触器常开辅助头闭合自锁、1KM1主接触器主触头也同时闭合，电动机M1得电启动并连续运转；
(3)停止时按下与上述控制线路相关的电磁启动器上的停止开关1SB 2，使得1KM1主接触器线圈失电断开，从而带动1KM1主接触器自锁触头分断、1KM1主接触器主触头分断，电动机M1失电停止运转。
如图4至图6所示，每个单元的液压系统结构相同，每个液压系统都包括油箱7，在油箱7上方安装有电机3、手动换向阀2、组合阀5和压力表6，电机3上安装有启动开关1，在液压系统中，电机3与油泵9连接，油泵9依次连接安全阀10、高压溢流阀11、手动换向阀2和组合阀5，然后再分别与依次连接手动球阀12、节流阀8和液压锁4后在与顶升油缸连接。
平台单元对应的液压控制单元启动后，每个液压控制单元中的液压系统有以下任意一种状态：
(1)、液压系统卸荷状态：
在电机3启动状态，手动换向阀2处于中间“H”位置，电机3启动带动油泵9工作，液压油经滤油器进入油泵再经换向阀中间位置回到油箱，此时系统处于卸荷状态；
(2)、油缸顶升状态：
在电机3启动状态，手动换向阀2手柄移到上升位，高压油经高压胶管进入油缸大腔，推动油缸上升，系统压力由高压溢流阀11调定，油缸小腔液压油经低压油管至平衡阀，平衡阀使油液产生背压，使油缸上升平稳，经手动换向阀后回到油箱7，四个油缸的顶升速度和同步性通过节流阀8进行调节，出厂前每一单元的油缸均进行了调节；
(3)、油缸收回状态：
在电机3启动状态，手动换向阀2手柄移到下降位，液压油经低压胶管进入油缸小腔与液压锁控制油腔，控制油推开液压锁，油缸大腔油液经节流阀8、液压锁4回到油箱7，使油缸收回，系统压力由低压溢流阀调定，油缸收回速度由节流阀8调定；
(4)、停机或意外故障状态，其根据是否带有负荷分为两种情况：
(a)带负荷状态，即油缸处于顶升状态的停机或意外故障：固定在油缸上的液压锁4将油液锁在油缸大腔，保证油缸不发生位移，保证架体在意外发生时的安全；
(b)无负荷状态，即油缸处于收回状态的停机：小腔油液保留了平衡阀设定压力，使顶升下支座部分自重不会将油缸活塞杆拉出。
实施例2：
如图1至图4所示，本方案以六个顶升单元的超高层为例，在需要六单元同时顶升时：
(1)先合上主电源开关1QF1、2QF1、3QF1、4QF1、5QF1、6QF1、控制变压器电源开关TS1Di和控制线路开关1QF2、2QF2、3QF2、4QF2、5QF2、6QF2；
(2)启动时，按下与上述控制线路上相关的开关1QF2、2QF2、3QF2、4QF2、5QF2、6QF2对应的电磁起动器上的启动开关1SB 1、2SB 1、3SB 1、4SB 1、5SB 1、6SB 1，使得1KM1、2KM1、3KM1、4KM1、5KM1、6KM1主接触器线圈得电吸合，从而带动1KM1、2KM1、3KM1、4KM1、5KM1、6KM1主接触器常开辅助头闭合自锁、1KM1、2KM1、3KM1、4KM1、5KM1、6KM1主接触器主触头闭合，电动机M1、M2、M3、M4、M5、M6得电启动连续运转；
(3)停止时按下与上述控制线路上相关的开关1QF2、2QF2、3QF2、4QF2、5QF2、6QF2连接的电磁启动器上的停止开关1SB 2、2SB 2、3SB 2、4SB 2、5SB 2、6SB 2，使得1KM1、2KM1、3KM1、4KM1、5KM1、6KM1主接触器线圈失电断开，从而使1KM1、2KM1、3KM1、4KM1、5KM1、6KM1的主接触器自锁触头分断、1KM1、2KM1、3KM1、4KM1、5KM1、6KM1主接触器主触头分断，电动机M1、M2、M3、M4、M5、M6失电停止运转。
液压系统原理同一个单元，在六个液控单元的操作位置由六个液控操作人员同步操作进行顶升作业。当任一单元的油缸或系统发生意外或故障时，可以立即停止该单元的操作，其余单元可以继续不受影响完成顶升操作；由于每一单元的液压系统和油缸可以完全互换，可用临近已完成的系统或油缸进行更换后完成顶升作业，对工期的影响降到最低。
在本实施例中，液压控制单元中的液压系统的状态与实施例1中提到的状态相符合。
实施例3：
如图1至图4所示，本方案以六个顶升单元的超高层为例，在需要三个单元顶升时(以第一单元、第二单元和第三单元同时顶升为例)：
(1)先合上主电源开关1QF1、2QF1、3QF1、控制变压器电源开关TS1Di和控制线路开关1QF2、2QF2、3QF2；
(2)启动时，按下与上述控制线路相关的开关1QF2、2QF2、3QF2连接的电磁起动器上的启动开关1SB 1、2SB 1、3SB 1，使得1KM1、2KM1、3KM1主接触器线圈得电吸合，从而带动1KM1、2KM1、3KM1主接触器常开辅助头闭合自锁、1KM1、2KM1、3KM1主接触器主触头闭合，电动机M1、M2、M3得电启动并连续运转；
(3)停止时按下与上述控制线路相关的开关1QF2、2QF2、3QF2连接的电磁启动器上的停止开关1SB 2、2SB 2、3SB 2，使得1KM1、2KM1、3KM1主接触器线圈失电断开，从而 带动1KM1、2KM1、3KM1主接触器自锁触头分断、1KM1、2KM1、3KM1主接触器主触头分断，电动机M1、M2、M3失电停止运转。
液压系统原理同一个单元，在三个液控单元的操作位置由三个液控操作人员同步操作进行顶升作业。当遇到其他情况：需要任意二个单元、四个单元或五个单元同步顶升时，其与本实施例操作类似进行。
在本实施例中，液压控制单元中的液压系统的状态与实施例1中提到的状态相符合。
本发明较好的解决了顶升系统需要特殊定制，能耗高、造价高的问题。由于每个单元采用均独立的液压系统且为建筑市场通用成熟的标准系统，无需特殊定制，当一个项目施工完毕，每个单元具有独立的液压和电控系统，每个单元又能满足相应的普通高层建筑施工的需要，大大提高了控制及液压顶升系统的利用率。在顶升作业过程中遇到意外故障情况，由于采用的系统和油缸均可完全互换完成顶升作业，对工期不会造成明显影响。由于顶升系统在每一单元均匀布置，减少了结构的集中荷载并使平台结构受力合理、承载力更大。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (4)

  1. 可实现整体顶升和局部顶升的顶升钢平台的控制方法，其特征在于，包括以下步骤：
    (1)根据需要顶升的工作平台单元的顶升单元位置和数量，开启对应的液压控制单元；
    (2)先合上N个主电源开关、N个控制变压器电源开关和N个控制线路开关(N为1、2、3……中的自然数)；
    (3)启动时，按下与上述控制线路开关连接的电磁起动器上对应的启动开关，使得对应的主接触器线圈得电吸合，从而该主接触器常开辅助头闭合自锁、主接触器主触头闭合，然后对应的电动机得电启动并连续运转；
    (4)停止时按下与上述控制线路开关连接的电磁启动器上的停止开关，使得对应的主接触器线圈失电断开，从而该主接触器的自锁触头分断、主接触器主触头分断，然后对应的电动机失电停止运转。
  2. 根据权利要求1所述的可实现整体顶升和局部顶升的顶升钢平台的控制方法，其特征在于，所述平台单元对应的液压控制单元启动后，每个液压控制单元中的液压系统有以下任意一种状态：
    (1)、液压系统卸荷状态：
    在电机(3)启动状态，手动换向阀(2)处于中间“H”位置，电机(3)启动带动油泵(9)工作，液压油经滤油器进入油泵再经换向阀中间位置回到油箱，此时系统处于卸荷状态；
    (2)、油缸顶升状态：
    在电机(3)启动状态，手动换向阀(2)手柄移到上升位，高压油经高压胶管进入油缸大腔，推动油缸上升，系统压力由高压溢流阀(11)调定，油缸小腔液压油经低压油管至平衡阀，平衡阀使油液产生背压，使油缸上升平稳，经手动换向阀后回到油箱(7)；
    (3)、油缸收回状态：
    在电机(3)启动状态，手动换向阀(2)手柄移到下降位，液压油经低压胶管进入油缸小腔与液压锁控制油腔，控制油推开液压锁，油缸大腔油液经节流阀(8)、液压锁(4)回到油箱，使油缸收回，系统压力由低压溢流阀调定，油缸收回速度由节流阀(8)调定；
    (4)、停机或意外故障状态：
    (a)带负荷或油缸顶升状态的停机或意外故障：固定在油缸上的液压锁(4)将油液锁在油缸大腔，使得油缸不发生位移；
    (b)无负荷或油缸收回状态的停机：小腔油液保留了平衡阀设定压力，使顶升下支座部分自重不会将油缸活塞杆拉出。
  3. 根据权利要求2所述的可实现整体顶升和局部顶升的顶升钢平台的控制方法，其特征在于，所述油缸的顶升速度和同步性通过节流阀(8)进行调节。
  4. 根据权利要求1至3中任意一项所述的可实现整体顶升和局部顶升的顶升钢平台的控制方法，其特征在于，所述平台单元中每个平台单元对应设置一组液压控制单元。
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