WO2012163190A1 - Device and method for detecting movable counterweight of crane - Google Patents

Device and method for detecting movable counterweight of crane Download PDF

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Publication number
WO2012163190A1
WO2012163190A1 PCT/CN2012/074210 CN2012074210W WO2012163190A1 WO 2012163190 A1 WO2012163190 A1 WO 2012163190A1 CN 2012074210 W CN2012074210 W CN 2012074210W WO 2012163190 A1 WO2012163190 A1 WO 2012163190A1
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Prior art keywords
weight
pressure
cylinder
active
sensing device
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PCT/CN2012/074210
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French (fr)
Chinese (zh)
Inventor
吴炜烨
李庆
部小平
Original Assignee
湖南三一智能控制设备有限公司
三一汽车起重机械有限公司
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Application filed by 湖南三一智能控制设备有限公司, 三一汽车起重机械有限公司 filed Critical 湖南三一智能控制设备有限公司
Publication of WO2012163190A1 publication Critical patent/WO2012163190A1/en

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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
    • 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
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • 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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical

Definitions

  • the invention relates to the field of engineering machinery, and particularly relates to a device and a method for detecting the weight of a crane.
  • the weight of the vehicle When the crane is driving on the road, it is subject to traffic regulations.
  • the weight of the vehicle must be less than the weight specified in the regulations.
  • the device with the active weight has appeared.
  • the movable counterweight is assembled only when the crane is working, and is not assembled on the vehicle when driving. This not only satisfies the self-weight of the vehicle while driving on the road, but also improves stability and lifting performance when it is working. .
  • the activity counterweight because of the occurrence of the activity counterweight, it has brought some problems. Since the cranes have different lifting performance corresponding to different weights, for safety reasons, it is necessary to select the lifting condition corresponding to the weight when the crane is hoisted. Therefore, it is necessary to obtain the active weight before the crane is hoisted. Weight, in order to get the total weight of the counterweight combined with the fixed weight and the active weight.
  • a first object of the present invention is to provide a detecting device capable of automatically sensing a crane's active weight, comprising: a pressure sensing device for sensing a pressure in a counterweight cylinder Information; controller, for determining the weight of the active weight corresponding to the weight cylinder according to the pressure information.
  • a second object of the present invention is to provide a detection method capable of automatically sensing a crane's active weight, comprising: a pressure sensing device sensing weight The sensing step of the pressure information of the cylinder; the determining step of the controller determining the weight of the active weight corresponding to the weight cylinder according to the pressure information.
  • the pressure information in the weight cylinder sensed by the pressure sensing device is determined in real time, thereby determining the weight of the active weight corresponding to the pressure information, thereby automatically determining the weight of the active weight, which is beneficial to the lifting. Automatic selection of working conditions.
  • FIG. 1 is a schematic view showing the position of a crane detecting weight detecting device according to the present invention on a crane;
  • FIG. 2 is a schematic structural view of an embodiment of a device for detecting a moving weight of a crane according to the present invention
  • FIG. 3 is a schematic structural view of an embodiment of a controller for detecting a moving weight of a crane according to the present invention
  • FIG. 4 is a flow chart showing an embodiment of a method for detecting a crane active weight according to the present invention.
  • the embodiment may include: two pressure sensors 12 and 14, a controller 16 and a display 18; wherein the pressure sensor 12 is used to sense the pressure in the rodless cavity of the counterweight cylinder 10. Information, the pressure sensor 14 is used to sense the pressure information in the rod cavity of the counterweight cylinder 10; the controller 16 calculates the weight of the current active weight by the pressure information collected by the two pressure sensors 12 and 14; The weight of the weight sent by the controller 16 and its corresponding lifting condition information are used to receive the condition selection information, and the condition selection information is sent to the controller 16.
  • FIG. 1 A schematic diagram of the above-mentioned counterweight cylinder 10, pressure sensors 12 and 14, controller 16 and display screen 16 on the crane is shown in Fig. 1.
  • D and d are the large cavity and small cavity diameter of the counterweight cylinder respectively, and ⁇ is the circumference ratio;
  • the tensile force of the counterweight cylinder is F1 according to the above formula; the tension F2 of the counterweight cylinder when installing two counterweights, and the tensile force F3 when installing 3 counterweights can also be obtained.
  • the gravity according to the active weight is the pressure difference between the installed active weight and the unmounted active weight of the counterweight cylinder.
  • the calculation of the active weight ⁇ is:
  • M (Fi - F0) ⁇ g ( 2 ) where g is the coefficient of gravity.
  • the controller 16 calculates the total weight according to the pre-stored fixed weight, and then automatically selects the corresponding weight according to the correspondence between the total weight and the working condition. Further, the controller 16 can also send the total weight and the corresponding working condition to the display 18 for display to prompt selection of the working condition, after receiving the working condition selection information, The condition selection information is returned to the controller 16, and accordingly, the priority of the manual selection condition and the automatic selection condition can be set in the controller 16, such as: if the priority of the manual selection is set high, the display 18 returns After the working condition selection information, the operation information is selected according to the working condition.
  • the operation is directly performed according to the information of the automatic selection working condition; of course, the actual operation may not set the priority.
  • the operation is directly performed according to the information of the automatic selection working condition; of course, the actual operation may not set the priority.
  • manual selection and automatic selection it can be operated according to the working condition determined by any one of the selection methods.
  • a proximity switch (not shown) connected to the controller 16, and the proximity switch can sense whether the active weight is installed and the number of the active weights is installed.
  • pressure measuring elements such as pressure switches can also be used to achieve the purpose of the invention; the electrical connection between the pressure sensor and the controller 16 can be changed.
  • the wireless connection method in addition, because the crane truck is equipped with different movable weights, the tension of each cavity in the weight cylinder is naturally different.
  • the pressure information collected from the weight cylinder pressure sensor is used to put the pressure information. After sorting and summarizing, the corresponding relationship between the weight of the counterweight and the pressure information is obtained. Therefore, the pressure information can be collected by measuring a rod cavity with a relatively large pressure value change, and the corresponding pre-installed rod cavity is installed.
  • the invention detects the pressure information in the weight cylinder through the pressure sensor, and then the controller determines the weight of the active weight according to the pressure information, thereby realizing automatic acquisition of the active weight information; further, according to the weight and working condition Corresponding relationship, automatically select the corresponding lifting condition, realize the automatic selection and the lifting condition corresponding to the weight, avoiding the influence of human factors; preferably, the controller can also determine the weight of the total weight corresponding to the loader After that, the weight of the counterweight and the corresponding lifting condition are sent to the display, prompting the operator to select the correct lifting condition to avoid the occurrence of the lifting fault caused by the incorrect selection of the lifting condition.
  • the cost of the design is low, only the pressure sensor data needs to be collected, the existing controller and display resources are utilized, no additional cost is required, and the entire device is required.
  • the device is relatively small, easy to install, debug, and maintain.
  • the controller 16 can include:
  • the transceiver unit 160 is configured to exchange information with a pressure sensor, a display, etc.; for example, receiving pressure information transmitted by a pressure sensor or two pressure sensors, receiving condition selection information transmitted by the display, and the like;
  • the determining unit 161 is configured to determine whether the transceiver unit 160 interacts with a pressure sensor or two pressure sensors, and when determining information interaction with a pressure sensor, the trigger processing unit 164 operates, and determines and the two pressure sensors. When the information interaction is performed, the trigger calculation unit 162 performs a work;
  • the calculating unit 162 is configured to calculate the difference between the tensile force of the counterweight cylinder when the active weight is installed and when the active weight is not installed, and determine the ratio of the tensile force difference to the gravity acceleration as the active weight of the weight cylinder
  • the tensile force of the counterweight cylinder is determined according to formula (1);
  • the storage unit 163 is configured to store a correspondence between a preset pressure change value in the rod cavity and an active weight
  • the processing unit 164 is configured to determine, according to the pressure information sensed by the pressure sensing device in real time The real-time pressure value should be calculated, and the pressure difference between the real-time pressure value and the pressure value in the rod cavity when the active weight is not installed is calculated, and then the weight of the active weight corresponding to the pressure difference is selected according to the correspondence relationship;
  • the working condition determining unit 165 is configured to automatically select a lifting condition corresponding to the weight of the active weight according to a preset correspondence between the weight of the active weight and the working condition.
  • FIG. 4 is a flow chart of an embodiment of the method. The explanations of FIG. 1, FIG. 2, and FIG. 3 are all compatible with the embodiment. As shown in FIG. 4, the method includes:
  • Step 402 The pressure sensing device senses pressure information of the weight cylinder
  • the step 402 may include: a first pressure sensing device in the pressure sensing device, sensing pressure information of the rodless cavity of the weight cylinder;
  • a second pressure sensing device in the pressure sensing device senses pressure information of the rod chamber of the weight cylinder
  • the step 402 may include:
  • the pressure sensing device senses pressure information of the rod cavity of the weight cylinder
  • Step 404 The controller determines the weight of the active weight corresponding to the weight cylinder according to the pressure information.
  • the step 404 may include: the controller calculates the weighting cylinder in the installation activity.
  • the ratio of the tensile force difference to the gravitational acceleration is determined as the weight of the active weight corresponding to the counterweight cylinder;
  • the pulling force of the counterweight cylinder is F, as shown in the above formula (1;);
  • the step 404 may include:
  • the controller determines a corresponding real-time pressure value according to the pressure information sensed by the pressure sensing device in real time, and calculates a pressure difference between the real-time pressure value and the pressure value in the rod cavity when the active weight is not installed, and then Selecting the weight of the active weight corresponding to the pressure difference according to a preset correspondence between the pressure change value in the rod cavity and the weight of the active weight;
  • Step 406 automatically select a lifting condition corresponding to the weight of the active weight according to a preset correspondence between the weight of the active weight and the working condition.
  • step 406 is a preferred solution, which implements an automatic selection condition to avoid errors in human operation. In specific operations, it may also include:
  • the pressure information of the weight cylinder is obtained by a pressure sensor or the like, and then the weight of the active weight is determined by the controller; preferably, the lifting condition corresponding to the weight can be automatically selected by the controller, and can also be The lifting condition corresponding to the active weight is displayed for the operator to select, thus avoiding the accident caused by the selection of the wrong lifting condition, and at the same time, laying the foundation for the intelligent control of the crane.

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

Abstract

Disclosed are a device and a method for detecting a movable counterweight of a crane. The device for detecting the movable counterweight of the crane comprises: a pressure sensing device, for sensing information about pressure in a counterweight oil cylinder; and a controller (16), for determining the weight of a movable counterweight corresponding to the counterweight oil cylinder according to the pressure information. With the device and the method, the weight of the movable counterweight corresponding to the counterweight oil cylinder can be automatically determined, thereby facilitating automatic selection of hoisting working conditions.

Description

起重机活动配重的检测装置及方法 本申请要求于 2011 年 06 月 01 日提交中国专利局、 申请号为 201110146861.7、 发明名称为"起重机活动配重的检测装置及方法"的中国 专利申请的优先权， 其全部内容通过引用结合在本申请中。  The present invention claims the priority of the Chinese patent application filed on June 1, 2011 by the Chinese Patent Office, the application number is 201110146861.7, and the invention is entitled "Detecting device and method for crane active weight". The entire contents of which are incorporated herein by reference.
技术领域 Technical field
本发明涉及工程机械领域， 具体涉及一种起重机活动配重的检测装置 及方法。  The invention relates to the field of engineering machinery, and particularly relates to a device and a method for detecting the weight of a crane.
背景技术 Background technique
起重机在道路上行驶的时候， 受到交通法规的约束， 车辆的自重必须 小于法规规定的重量， 同时， 在起重机工作的时候， 又要求进一步提升起 重机的稳定性和起重性能， 为解决这一矛盾， 出现了活动配重这个装置。 活动配重只有在起重机工作的时候才装配上， 在行驶的时候没有装配在车 辆上， 这样不仅满足车辆在道路上行驶时候的自重， 又能够在其工作的时 候， 提高稳定性和起重性能。 但是， 也因为活动配重的出现， 带来了一些 问题。 由于不同的配重所对应的起重机起重性能不一样， 出于安全考虑， 在起重机吊载的时候需要选择与配重对应的吊载工况， 因此需要在起重机 吊载之前得到活动配重的重量， 才能得到固定配重与活动配重相组合的配 重的总配重重量。  When the crane is driving on the road, it is subject to traffic regulations. The weight of the vehicle must be less than the weight specified in the regulations. At the same time, when the crane is working, it is required to further improve the stability and lifting performance of the crane. The device with the active weight has appeared. The movable counterweight is assembled only when the crane is working, and is not assembled on the vehicle when driving. This not only satisfies the self-weight of the vehicle while driving on the road, but also improves stability and lifting performance when it is working. . However, because of the occurrence of the activity counterweight, it has brought some problems. Since the cranes have different lifting performance corresponding to different weights, for safety reasons, it is necessary to select the lifting condition corresponding to the weight when the crane is hoisted. Therefore, it is necessary to obtain the active weight before the crane is hoisted. Weight, in order to get the total weight of the counterweight combined with the fixed weight and the active weight.
目前， 起重机进行工作的时候， 需要操作手人工选择对应配重的吊载 工况， 但是， 这种人工选择肯定会受到一定的人为因素的影响， 如疲劳、 操作不熟悉或者懒惰等情况的影响。 因此， 任何自动确定活动配重重量， 进而实现自动工况的选择， 成为一个亟待解决的问题。  At present, when the crane is working, the operator needs to manually select the lifting condition of the corresponding weight. However, this manual selection will definitely be affected by certain human factors, such as fatigue, unfamiliar operation or laziness. . Therefore, any automatic determination of the weight of the active weight, and thus the selection of automatic working conditions, becomes an urgent problem to be solved.
发明内容 Summary of the invention
为了克服现有技术的上述缺陷和不足， 本发明的第一目的在于提供一 种能自动感测起重机活动配重的检测装置， 包括： 压力感测装置， 用于感 测配重油缸中的压力信息； 控制器， 用于 ^据压力信息， 确定配重油缸对 应的活动配重重量。  In order to overcome the above-mentioned drawbacks and deficiencies of the prior art, a first object of the present invention is to provide a detecting device capable of automatically sensing a crane's active weight, comprising: a pressure sensing device for sensing a pressure in a counterweight cylinder Information; controller, for determining the weight of the active weight corresponding to the weight cylinder according to the pressure information.
为了克服现有技术的上述缺陷和不足， 本发明的第二目的在于提供一 种能自动感测起重机活动配重的检测方法， 包括： 压力感测装置感测配重 油缸的压力信息的感测步骤； 控制器根据压力信息确定配重油缸对应的活 动配重重量的确定步骤。 In order to overcome the above-mentioned drawbacks and deficiencies of the prior art, a second object of the present invention is to provide a detection method capable of automatically sensing a crane's active weight, comprising: a pressure sensing device sensing weight The sensing step of the pressure information of the cylinder; the determining step of the controller determining the weight of the active weight corresponding to the weight cylinder according to the pressure information.
本发明各实施例通过压力感测装置实时感测到的配重油缸中的压力信 息， 进而确定与该压力信息对应的活动配重重量， 实现了自动确定活动配 重重量， 有利于实现吊载工况的自动选择。  In the embodiments of the present invention, the pressure information in the weight cylinder sensed by the pressure sensing device is determined in real time, thereby determining the weight of the active weight corresponding to the pressure information, thereby automatically determining the weight of the active weight, which is beneficial to the lifting. Automatic selection of working conditions.
附图说明 DRAWINGS
图 1为本发明起重机活动配重的检测装置实施例在起重机上的位置示 意图；  1 is a schematic view showing the position of a crane detecting weight detecting device according to the present invention on a crane;
图 2为本发明起重机活动配重的检测装置实施例的结构示意图； 图 3为本发明起重机活动配重的检测装置中控制器的实施例结构示意 图；  2 is a schematic structural view of an embodiment of a device for detecting a moving weight of a crane according to the present invention; FIG. 3 is a schematic structural view of an embodiment of a controller for detecting a moving weight of a crane according to the present invention;
图 4所示为本发明起重机活动配重的检测方法的实施例流程图。  4 is a flow chart showing an embodiment of a method for detecting a crane active weight according to the present invention.
具体实施方式 detailed description
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的 范围。  The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
如图 1及图 2所示， 本实施例可以包括： 两个压力传感器 12及 14、 控制器 16及显示器 18 ; 其中， 压力传感器 12用于感测配重油缸 10的无 杆腔中的压力信息， 压力传感器 14用于感测配重油缸 10的有杆腔中的压 力信息；控制器 16通过两个压力传感器 12及 14采集的压力信息来计算当 前活动配重的重量； 显示器 18用于显示控制器 16发送的配重重量及其对 应的吊载工况信息， 并用于接收工况选择信息， 以及将该工况选择信息发 送至控制器 16。  As shown in FIG. 1 and FIG. 2, the embodiment may include: two pressure sensors 12 and 14, a controller 16 and a display 18; wherein the pressure sensor 12 is used to sense the pressure in the rodless cavity of the counterweight cylinder 10. Information, the pressure sensor 14 is used to sense the pressure information in the rod cavity of the counterweight cylinder 10; the controller 16 calculates the weight of the current active weight by the pressure information collected by the two pressure sensors 12 and 14; The weight of the weight sent by the controller 16 and its corresponding lifting condition information are used to receive the condition selection information, and the condition selection information is sent to the controller 16.
上述配重油缸 10、 压力传感器 12及 14、 控制器 16及显示屏 16在起 重机上位置安装示意图见图 1。  A schematic diagram of the above-mentioned counterweight cylinder 10, pressure sensors 12 and 14, controller 16 and display screen 16 on the crane is shown in Fig. 1.
其中，该控制器 16根据两个压力传感器 12及 14的感测信号，计算活 动配置重量的过程具体解释如下：  The process of calculating the active configuration weight by the controller 16 based on the sensing signals of the two pressure sensors 12 and 14 is specifically explained as follows:
以一个配重油缸进行分析， 在没有安装活动配重时， 根据两个压力传 感器 12、 14测得的信号， 即大腔感测（对应无杆腔）信号为 PI , 小腔（对 应有杆腔）信号为
Figure imgf000005_0001
Analyze with a counterweight cylinder, according to two pressure passes when no active weight is installed The signals measured by the sensors 12 and 14 , that is, the signals of the large cavity sensing (corresponding to the rodless cavity) are PI, and the signals of the small cavity (corresponding to the rod cavity) are
Figure imgf000005_0001
其中， D、 d分别为配重油缸大腔和小腔直径， π为圓周率；  Wherein D and d are the large cavity and small cavity diameter of the counterweight cylinder respectively, and π is the circumference ratio;
若安装一个活动配重， 根据上面的计算公式得到配重油缸承受的拉力 为 F1 ; 同样可以得出安装两个配重时配重油缸所受的拉力 F2 ,安装 3个配 重时的拉力 F3; 根据活动配重的重力即为配重油缸在安装活动配重与未安 装活动配重之间的压力差， 可以得到活动重量 Μ的计算方式为：  If an active counterweight is installed, the tensile force of the counterweight cylinder is F1 according to the above formula; the tension F2 of the counterweight cylinder when installing two counterweights, and the tensile force F3 when installing 3 counterweights can also be obtained. The gravity according to the active weight is the pressure difference between the installed active weight and the unmounted active weight of the counterweight cylinder. The calculation of the active weight 为 is:
M = (Fi - F0) ÷ g ( 2 ) 其中 g为重力系数。 M = (Fi - F0) ÷ g ( 2 ) where g is the coefficient of gravity.
进一步地，该控制器 16在得到活动配重的重量后， ^据预存的固定配 重重量计算总配重重量， 进而根据总配重重量与工况之间的对应关系， 自 动选择之对应的吊载工况； 更进一步地，该控制器 16还可以将总配重重量 及与之对应的工况发送至显示器 18进行显示以提示对工况进行选择，在接 收到工况选择信息后， 将该工况选择信息返回至控制器 16 , 相应地， 控制 器 16中可以设置手动选择工况及自动选择工况的优先级，如： 若设置手动 选择的优先级高时，在显示器 18返回工况选择信息后，按照该工况选择信 息进行操作，在显示器 18没有返回工况选择信息时，直接按照自动选择工 况的信息进行操作； 当然， 实际操作时也可以不设置优先级， 在存在手动 选择及自动选择时， 按照任何一种选择方式确定的工况进行操作即可。  Further, after obtaining the weight of the active weight, the controller 16 calculates the total weight according to the pre-stored fixed weight, and then automatically selects the corresponding weight according to the correspondence between the total weight and the working condition. Further, the controller 16 can also send the total weight and the corresponding working condition to the display 18 for display to prompt selection of the working condition, after receiving the working condition selection information, The condition selection information is returned to the controller 16, and accordingly, the priority of the manual selection condition and the automatic selection condition can be set in the controller 16, such as: if the priority of the manual selection is set high, the display 18 returns After the working condition selection information, the operation information is selected according to the working condition. When the display 18 does not return the working condition selection information, the operation is directly performed according to the information of the automatic selection working condition; of course, the actual operation may not set the priority. When there is manual selection and automatic selection, it can be operated according to the working condition determined by any one of the selection methods.
具体操作时，还可以通过增设与控制器 16连接的接近开关（图未示）， 通过接近开关可以感测是否安装活动配重， 以及活动配重的安装个数。  In the specific operation, it is also possible to add a proximity switch (not shown) connected to the controller 16, and the proximity switch can sense whether the active weight is installed and the number of the active weights is installed.
本领域技术人员可以理解， 除了利用压力传感器感测配重油缸中的压 力信息外， 还可以利用压力开关等压力测量元件来达到发明目的； 可以将 压力传感器与控制器 16之间的电气连接改为无线连接方式； 另外， 由于起 重车装配不同的活动配重，配重油缸中各个腔所受到的拉力自然也不一样， 利用从配重油缸压力传感器采集到的压力信息，把这些压力信息进行整理、 总结， 得出不同的配重重量与压力信息的对应关系， 故可以通过测量一个 压力值变化比较大的有杆腔来实现压力信息采集， 对应预设有杆腔在安装 活动配重后与没有安装活动配重时之间的压力变化值与活动配重重量之间 的对应关系， 如： 当装一号配重时， 有杆腔对应的压力差 （即为装一号配 重后的压力值与没有装配重时的压力值之间的差值）为 pl、 装一号和二号 配重时的压力差为 p2、 当装一号和三号配重时， 压力差为 p3; 这样， ^艮据 有杆腔中压力变化值及上述对应关系， 可以得出导致该压力出现变化的活 动配置的重量。 Those skilled in the art can understand that in addition to using the pressure sensor to sense the pressure information in the counterweight cylinder, pressure measuring elements such as pressure switches can also be used to achieve the purpose of the invention; the electrical connection between the pressure sensor and the controller 16 can be changed. For the wireless connection method; in addition, because the crane truck is equipped with different movable weights, the tension of each cavity in the weight cylinder is naturally different. The pressure information collected from the weight cylinder pressure sensor is used to put the pressure information. After sorting and summarizing, the corresponding relationship between the weight of the counterweight and the pressure information is obtained. Therefore, the pressure information can be collected by measuring a rod cavity with a relatively large pressure value change, and the corresponding pre-installed rod cavity is installed. Correspondence between the pressure change value and the weight of the active weight after the active weight is not installed, such as: When the weight is loaded, there is a pressure difference corresponding to the rod cavity (ie, one is installed) The difference between the pressure value after the counterweight and the pressure value when there is no assembly weight is pl, the pressure difference when loading the weights of No.1 and No.2 is p2, when the weights of No.1 and No.3 are loaded, The pressure difference is p3; thus, according to the pressure change value in the rod cavity and the above corresponding relationship, the weight of the active configuration causing the pressure to change can be obtained.
本发明通过压力传感器检测配重油缸中的压力信息， 进而由控制器根 据该压力信息确定活动配重的重量， 实现了活动配重信息的自动获取； 进 一步地， ^据配重重量与工况的对应关系， 自动选择相应吊载工况， 实现 自动选择和配重对应的吊载工况， 避免了人为因素的影响； 优选地， 还可 以在控制器确定总配重重量对应的吊载工况后， 将配重重量与之对应的吊 载工况发送至显示器中， 提示操作人员进行选择正确的吊载工况， 以避免 因吊载工况选择不正确而产生的吊载故障的发生， 从而增加了起重机的使 用安全系数； 该方案设计所需成本低廉， 只需要对压力传感器数据进行采 集， 利用现有的控制器和显示器资源， 无需要增加额外的成本， 且整个装 置所需的器件比较少， 便于安装、 调试、 维护。  The invention detects the pressure information in the weight cylinder through the pressure sensor, and then the controller determines the weight of the active weight according to the pressure information, thereby realizing automatic acquisition of the active weight information; further, according to the weight and working condition Corresponding relationship, automatically select the corresponding lifting condition, realize the automatic selection and the lifting condition corresponding to the weight, avoiding the influence of human factors; preferably, the controller can also determine the weight of the total weight corresponding to the loader After that, the weight of the counterweight and the corresponding lifting condition are sent to the display, prompting the operator to select the correct lifting condition to avoid the occurrence of the lifting fault caused by the incorrect selection of the lifting condition. , thereby increasing the safety factor of the crane; the cost of the design is low, only the pressure sensor data needs to be collected, the existing controller and display resources are utilized, no additional cost is required, and the entire device is required. The device is relatively small, easy to install, debug, and maintain.
如图 3所示， 控制器 16可以包括：  As shown in FIG. 3, the controller 16 can include:
收发单元 160 , 用于与压力传感器、 显示器等进行信息交互； 如接收 一个压力传感器或两个压力传感器传送的压力信息， 接收显示器传送的工 况选择信息等；  The transceiver unit 160 is configured to exchange information with a pressure sensor, a display, etc.; for example, receiving pressure information transmitted by a pressure sensor or two pressure sensors, receiving condition selection information transmitted by the display, and the like;
判断单元 161 , 用于判断收发单元 160与一个压力传感器还是两个压 力传感器进行信息交互， 并在判定与一个压力传感器进行信息交互时， 触 发处理单元 164进行工作，以及在判定与两个压力传感器进行信息交互时， 触发计算单元 162进行工作；  The determining unit 161 is configured to determine whether the transceiver unit 160 interacts with a pressure sensor or two pressure sensors, and when determining information interaction with a pressure sensor, the trigger processing unit 164 operates, and determines and the two pressure sensors. When the information interaction is performed, the trigger calculation unit 162 performs a work;
计算单元 162 , 用于计算配重油缸在安装活动配重时与在没有安装活 动配重时 7 受的拉力差， 再将拉力差与重力加速度的比值确定为配重油缸 对应的活动配重重量； 配重油缸承受的拉力为 F根据公式（ 1 )确定；  The calculating unit 162 is configured to calculate the difference between the tensile force of the counterweight cylinder when the active weight is installed and when the active weight is not installed, and determine the ratio of the tensile force difference to the gravity acceleration as the active weight of the weight cylinder The tensile force of the counterweight cylinder is determined according to formula (1);
存储单元 163 , 用于存放预设的有杆腔中的压力变化值与活动配重重 量的对应关系；  The storage unit 163 is configured to store a correspondence between a preset pressure change value in the rod cavity and an active weight;
处理单元 164 , 用于 ^据压力感测装置实时感测到的压力信息确定对 应的实时压力值， 并计算实时压力值与在没有安装活动配重时的有杆腔中 的压力值之间的压力差值， 再根据对应关系， 选择压力差值对应的活动配 重重量； The processing unit 164 is configured to determine, according to the pressure information sensed by the pressure sensing device in real time The real-time pressure value should be calculated, and the pressure difference between the real-time pressure value and the pressure value in the rod cavity when the active weight is not installed is calculated, and then the weight of the active weight corresponding to the pressure difference is selected according to the correspondence relationship;
工况确定单元 165 , 用于根据预设的活动配重重量与工况的对应关系， 自动选择活动配重重量对应的吊载工况。  The working condition determining unit 165 is configured to automatically select a lifting condition corresponding to the weight of the active weight according to a preset correspondence between the weight of the active weight and the working condition.
方法实施例  Method embodiment
图 4是方法的实施例流程图， 图 1、 图 2、 图 3的解释说明均与本实施 例相适应， 如图 4所示， 包括：  4 is a flow chart of an embodiment of the method. The explanations of FIG. 1, FIG. 2, and FIG. 3 are all compatible with the embodiment. As shown in FIG. 4, the method includes:
步骤 402 , 压力感测装置感测配重油缸的压力信息；  Step 402: The pressure sensing device senses pressure information of the weight cylinder;
优选地， 在压力感测装置的个数为两个时， 该步骤 402可以包括： 压力感测装置中的第一压力感测装置， 感测配重油缸的无杆腔的压力 信息；  Preferably, when the number of the pressure sensing devices is two, the step 402 may include: a first pressure sensing device in the pressure sensing device, sensing pressure information of the rodless cavity of the weight cylinder;
压力感测装置中的第二压力感测装置， 感测配重油缸的有杆腔的压力 信息；  a second pressure sensing device in the pressure sensing device senses pressure information of the rod chamber of the weight cylinder;
在压力感测装置的个数为一个时， 该步骤 402可以包括：  When the number of the pressure sensing devices is one, the step 402 may include:
压力感测装置感测配重油缸的有杆腔的压力信息；  The pressure sensing device senses pressure information of the rod cavity of the weight cylinder;
步骤 404 , 控制器根据压力信息确定配重油缸对应的活动配重重量； 优选地， 在压力感测装置的个数为两个时， 该步骤 404可以包括： 控制器计算配重油缸在安装活动配重时与在没有安装活动配重时承受 的拉力差， 再将拉力差与重力加速度的比值确定为配重油缸对应的活动配 重重量；  Step 404: The controller determines the weight of the active weight corresponding to the weight cylinder according to the pressure information. Preferably, when the number of the pressure sensing devices is two, the step 404 may include: the controller calculates the weighting cylinder in the installation activity. When the counterweight is different from the tensile force that is received when the active weight is not installed, the ratio of the tensile force difference to the gravitational acceleration is determined as the weight of the active weight corresponding to the counterweight cylinder;
配重油缸承受的拉力为 F , 详见上述公式（ 1；);  The pulling force of the counterweight cylinder is F, as shown in the above formula (1;);
在压力感测装置的个数为一个时， 该步骤 404可以包括：  When the number of the pressure sensing devices is one, the step 404 may include:
控制器根据压力感测装置实时感测到的压力信息确定对应的实时压力 值， 并计算实时压力值与在没有安装活动配重时的有杆腔中的压力值之间 的压力差值， 再根据预设的有杆腔中的压力变化值与活动配重重量的对应 关系， 选择压力差值对应的活动配重重量；  The controller determines a corresponding real-time pressure value according to the pressure information sensed by the pressure sensing device in real time, and calculates a pressure difference between the real-time pressure value and the pressure value in the rod cavity when the active weight is not installed, and then Selecting the weight of the active weight corresponding to the pressure difference according to a preset correspondence between the pressure change value in the rod cavity and the weight of the active weight;
步骤 406 , 根据预设的活动配重重量与工况的对应关系， 自动选择活 动配重重量对应的吊载工况。 对应于对图 1-图 3的解释说明可知， 步骤 406为优选的方案， 其实现 了自动选择工况， 避免人为操作的误差； 具体操作时， 还可以包括： 通过 Step 406: automatically select a lifting condition corresponding to the weight of the active weight according to a preset correspondence between the weight of the active weight and the working condition. Corresponding to the explanation of FIG. 1 - FIG. 3, step 406 is a preferred solution, which implements an automatic selection condition to avoid errors in human operation. In specific operations, it may also include:
1-图 3中各元件的操作及功能均可适用于本方法实施例。 The operation and function of each of the elements in FIG. 3 can be applied to the embodiment of the method.
本实施例通过压力传感器等获取配重油缸的压力信息， 进而由控制器 确定活动配重重量； 优选地， 可以由控制器自动选择与配重相对应的吊载 工况， 还可以通过显示器将活动配重对应的吊载工况显示给操作者供其选 择， 从而避免了因选择错误的吊载工况而产生事故， 同时， 为实现起重机 的智能化控制奠定了基础。  In this embodiment, the pressure information of the weight cylinder is obtained by a pressure sensor or the like, and then the weight of the active weight is determined by the controller; preferably, the lifting condition corresponding to the weight can be automatically selected by the controller, and can also be The lifting condition corresponding to the active weight is displayed for the operator to select, thus avoiding the accident caused by the selection of the wrong lifting condition, and at the same time, laying the foundation for the intelligent control of the crane.
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 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。  The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

1、 一种起重机活动配重的检测装置， 其特征在于， 包括： A detecting device for a crane active weight, characterized in that it comprises:
压力感测装置， 用于感测配重油缸中的压力信息；  a pressure sensing device for sensing pressure information in the weight cylinder;
控制器， 用于根据所述压力信息， 确定所述配重油缸对应的活动配重 重量。  And a controller, configured to determine, according to the pressure information, a weight of the active weight corresponding to the weight cylinder.
2、根据权利要求 1所述的检测装置， 其特征在于， 所述压力感测装置 包括第一压力感测装置与第二压力感测装置；  2. The detecting device according to claim 1, wherein the pressure sensing device comprises a first pressure sensing device and a second pressure sensing device;
所述第一压力感测装置， 用于感测所述配重油缸的无杆腔中的压力信 息；  The first pressure sensing device is configured to sense pressure information in a rodless cavity of the counterweight cylinder;
所述第二压力感测装置， 用于感测所述配重油缸的有杆腔中的压力信 息。  The second pressure sensing device is configured to sense pressure information in a rod cavity of the counterweight cylinder.
3、 根据权利要求 2所述的检测装置， 其特征在于， 所述控制器包括： 计算单元， 用于计算所述配重油缸在安装活动配重时与在没有安装活 动配重时承受的拉力差， 再将所述拉力差与重力加速度的比值确定为所述 配重油缸对应的活动配重重量。  3. The detecting device according to claim 2, wherein the controller comprises: a calculating unit configured to calculate a pulling force of the counterweight cylinder when the movable weight is installed and when the active weight is not installed Poor, the ratio of the tensile force difference to the gravitational acceleration is determined as the weight of the active weight corresponding to the weight cylinder.
4、根据权利要求 1所述的检测装置， 其特征在于， 所述压力感测装置 的个数为一个， 用于感测所述配重油缸的有杆腔中的压力信息。  The detecting device according to claim 1, wherein the number of the pressure sensing devices is one for sensing pressure information in a rod cavity of the weight cylinder.
5、根据权利要求 4所述的检测装置，其特征在于，所述控制器还包括： 存储单元， 用于存放预设的所述有杆腔中的压力变化值与活动配重重 量的对应关系；  The detecting device according to claim 4, wherein the controller further comprises: a storage unit, configured to store a correspondence between a preset pressure change value in the rod cavity and an active weight weight ;
处理单元， 用于 ^据所述压力感测装置实时感测到的压力信息确定对 应的实时压力值， 并计算所述实时压力值与在没有安装活动配重时的所述 有杆腔中的压力值之间的压力差值， 再根据所述对应关系， 选择所述压力 差值对应的活动配重重量。  a processing unit, configured to determine a corresponding real-time pressure value according to the pressure information sensed by the pressure sensing device in real time, and calculate the real-time pressure value and the rod cavity in the case where the active weight is not installed The pressure difference between the pressure values is further selected according to the corresponding relationship, and the weight of the active weight corresponding to the pressure difference is selected.
6、根据上述权利要求 1-5中任一项所述的检测装置， 其特征在于， 还 包括： 与所述控制器连接的接近开关， 用于感测活动配重的数量。  The detecting device according to any one of the preceding claims 1 to 5, further comprising: a proximity switch connected to the controller for sensing the number of active weights.
7、根据上述权利要求 1-5中任一项所述的检测装置， 其特征在于， 所 述控制器还包括：  The detecting device according to any one of claims 1 to 5, wherein the controller further comprises:
工况确定单元， 根据预设的活动配重重量与工况的对应关系， 自动选 择所述活动配重重量对应的吊载工况。 The working condition determining unit automatically selects a lifting condition corresponding to the weight of the active weight according to a preset correspondence between the weight of the active weight and the working condition.
8、 根据权利要求 7所述的检测装置， 其特征在于， 还包括： 与所述控制器连接的显示器， 用于显示所述活动配重重量及对应的吊 载工况， 并接收工况选择信息， 以及将所述工况选择信息发送至所述控制 哭口 。 The detecting device according to claim 7, further comprising: a display connected to the controller, configured to display the weight of the active weight and the corresponding lifting condition, and receive the working condition selection Information, and transmitting the condition selection information to the control crying port.
9、根据上述权利要求 1-5中任一项所述的检测装置， 其特征在于， 所 述压力感测装置为压力传感器或压力开关。  The detecting device according to any one of claims 1 to 5, wherein the pressure sensing device is a pressure sensor or a pressure switch.
10、 一种起重机活动配重的检测方法， 其特征在于， 包括：  10. A method for detecting a crane active weight, characterized in that it comprises:
压力感测装置感测配重油缸的压力信息；  The pressure sensing device senses pressure information of the weight cylinder;
控制器 ^据所述压力信息确定所述配重油缸对应的活动配重重量。  The controller determines the weight of the active weight corresponding to the weight cylinder according to the pressure information.
11、根据权利要求 1 0所述的检测方法， 其特征在于， 所述压力感测装 置感测配重油缸的压力信息的步骤包括： The detecting method according to claim 10, wherein the step of sensing the pressure information of the weight cylinder by the pressure sensing device comprises:
所述压力感测装置中的第一压力感测装置， 感测所述配重油缸的无杆 腔的压力信息；  a first pressure sensing device in the pressure sensing device senses pressure information of the rodless cavity of the weight cylinder;
所述压力感测装置中的第二压力感测装置， 感测所述配重油缸的有杆 腔的压力信息。  A second pressure sensing device in the pressure sensing device senses pressure information of the rod chamber of the counterweight cylinder.
12、根据权利要求 1 1所述的检测方法， 其特征在于， 所述控制器根据 所述压力信息确定所述配重油缸对应的活动配重重量的步骤包括：  The detecting method according to claim 1 , wherein the step of determining, by the controller, the weight of the active weight corresponding to the weight cylinder according to the pressure information comprises:
所述控制器计算所述配重油缸在安装活动配重时与在没有安装活动配 重时承受的拉力差， 再将所述拉力差与重力加速度的比值确定为所述配重 油缸对应的活动配重重量。  The controller calculates a tensile force difference of the weight cylinder when the movable weight is installed and when the movable weight is not installed, and determines the ratio of the tensile force difference to the gravity acceleration as the activity corresponding to the weight cylinder Counterweight weight.
1 3、 根据权利要求 10所述的检测方法， 其特征在于， 所述压力感测 装置感测配重油缸的压力信息的步骤包括：  The detecting method according to claim 10, wherein the step of sensing the pressure information of the weight cylinder by the pressure sensing device comprises:
所述压力感测装置感测所述配重油缸的有杆腔的压力信息。  The pressure sensing device senses pressure information of the rod chamber of the counterweight cylinder.
14、根据权利要求 1 3所述的检测方法， 其特征在于， 所述控制器根据 所述压力信息确定所述配重油缸对应的活动配重重量的步骤包括：  The detecting method according to claim 13, wherein the step of determining, by the controller, the weight of the active weight corresponding to the weight cylinder according to the pressure information comprises:
所述控制器 ^据所述压力感测装置实时感测到的压力信息确定对应的 实时压力值， 并计算所述实时压力值与在没有安装活动配重时的所述有杆 腔中的压力值之间的压力差值， 再根据预设的所述有杆腔中的压力变化值 与活动配重重量的对应关系， 选择所述压力差值对应的活动配重重量。 The controller determines a corresponding real-time pressure value according to the pressure information sensed by the pressure sensing device in real time, and calculates the real-time pressure value and the pressure in the rod cavity when the active weight is not installed The pressure difference between the values is further selected according to the preset relationship between the pressure change value in the rod chamber and the weight of the active weight, and the weight of the active weight corresponding to the pressure difference is selected.
15、根据上述权利要求 1 0-14中任一项所述的检测方法，其特征在于， 在所述确定步骤后还包括： The detection method according to any one of the preceding claims, wherein after the determining step, the method further comprises:
根据预设的活动配重重量与工况的对应关系， 自动选择所述活动配重 重量对应的吊载工况。  According to the preset correspondence between the weight of the active weight and the working condition, the lifting condition corresponding to the weight of the active weight is automatically selected.
PCT/CN2012/074210 2011-06-01 2012-04-17 Device and method for detecting movable counterweight of crane WO2012163190A1 (en)

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