带式输送机液压张紧装置Hydraulic tensioning device - 产品展示

1、产品概述长距离带式输送机要求配套采用张紧力动态可调的张紧装置：启动阶段满足胶带运输机的动态防滑要求，等速阶段降低张紧力以维持胶带机正常运行要求，同时有张紧力实时监控功能。煤矿井下长距离阻燃整芯胶带的伸长率是常规皮带的10倍，简单的绞车或重锤张紧等张紧装置受其张紧距离和张紧力的限制而难以适应特别是500米以上皮带的张紧要求。液压涨紧装置是根据皮带输送机运行特点和受力模型分析及大量实验数据开发的新型产品。它保证了皮带启动和运行中皮带对涨紧力和缓冲要求。

2、液压张紧装置功能及特点
2.1 本装置能够自动实现对胶带机提供启动张力和运行张力的张紧动作，以满足胶带启动时防止打滑及胶带正常运行对张紧力的不同要求。
2.2 液压张紧装置的液压张力缓冲装置能够被及时拉紧胶带机启动时的松边，改善了启动特性，减轻甚至消除其他张紧出现的波涌、打带现象。
2.3 本装置除了自动提供启动张紧力、运行张紧力外还可根据用户需要自动提供皮带停机张力，这样既节约了能耗，又延长了胶带使用寿命。
3.4 张紧装置可根据用户的实际拉紧行程需要在大行程范围内实现自动张紧，这样便能够适应伸长率大的整芯胶带机和长距离胶带机的张紧要求。
3.5 当停机或意外停电时，张紧装置能实现自动制动，此时仍能可靠地确保运输带处于张紧状态。
3.6 本装置配有可靠的张力监控系统，能对张力变化作出及时反应和调整。有效的防止了皮带机运行中的打滑现象。
3.7 本装置设有手动控制，便于胶带整机的维护。

3、ZYJ型液压张紧装置 3.1结构和工作原理：拉线开关本装置主要由基座、张紧绞车、张紧油缸、液压张力缓冲装置、控制箱和张力传感器六部分组成。图示中游动小车是皮带机部件。该装置还可采用分散布置来满足特定场合的安装要求。下面示例为电厂和钢厂采用的分散垂直布置：基本工作原理简述如下：在自动控制模式下，控制系统首先自检胶带张力，如张紧系统有故障，任何操作都无效。如检测正常，则启动张紧装置张紧皮带。当张紧拉力达到设定的启动张紧力时，停止张紧，同时电器控制箱发出胶带机可以起动的信号，胶带机起动并加速运行。在胶带机达到等速运行状态后，控制器控制张紧装置降低张力。当输送带张力降低到正常运行所需值时，张紧停止。张力监测装置自动随时监测胶带的张紧力。一旦发现张紧力小于设定“下限”时，它将重新启动张紧装置，增大胶带张力。张力缓冲装置在胶带机正常运输过程中，可吸收皮带运行中短暂的张力波动。

1. product overview long-distance belt conveyor requirements with tension dynamic adjustable tensioning device: start-up phase to meet the belt conveyor dynamic anti-skid requirements, isokinetic phase to reduce tension to maintain the belt conveyor normal operation requirements, at the same time has tension real-time monitoring function. the elongation of long distance flame retardant whole core tape under coal mine is 10 times higher than that of conventional belt. tensioning devices such as simple winch or heavy hammer tensioning are difficult to adapt to the tensioning requirements of belt especially more than 500 meters due to the limitation of its tensioning distance and tensioning force. Hydraulic tension device is a new product developed according to the characteristics of belt conveyor operation and force model analysis and a large number of experimental data. It ensures belt tension and buffer requirements during belt start-up and operation. Function and Characteristics of 2. Hydraulic Tensioning Device 2.1 The device can automatically provide the belt machine with start-up tension and operating tension tensioning action, to meet the tape start-up to prevent slippage and tape normal operation of the different tension requirements. 2.2 The hydraulic tension buffer device of the hydraulic tension device can tighten the loose edge of the belt conveyor when it starts in time, improve the starting characteristics, and reduce or even eliminate the wave surge and strip phenomenon of other tensioners. 2.3 In addition to providing the starting tension and running tension, the device can also provide the belt stop tension automatically according to the user's needs, which saves energy consumption and prolongs the service life of the tape. 3.4 The tensioning device can achieve automatic tensioning in a wide range according to the user's actual tensioning stroke, so that it can adapt to the tensioning requirements of the whole core tape machine and the long distance tape machine with high elongation. 3.5 When shutdown or accidental power failure occurs, the tensioning device can automatically brake, which can still reliably ensure that the belt is in tension. 3.6 The device is equipped with a reliable tension monitoring system, which can respond and adjust the tension changes in time. Effectively prevent the belt in the operation of the skid phenomenon. 3.7 The device is equipped with manual control to facilitate the maintenance of the tape machine. 3.ZYJ type hydraulic tensioning device 3.1 structure and working principle: the cable switch this device mainly consists of six parts: base, tensioning winch, tensioning oil cylinder, hydraulic tension buffer device, control box and tension sensor. The swimming car in the diagram is a belt machine component. The device can also adopt a decentralized arrangement to meet the installation requirements of specific occasions. The following example is the decentralized vertical arrangement used by the power plant and the steel plant: the basic working principle is briefly described as follows: in the automatic control mode, the control system first self-check the tape tension, such as the tension system has a failure, any operation is invalid. If the detection is normal, start the tensioning device to tension the belt. When the tension force reaches the set start tension, stop the tension, and the electrical control box sends the signal that the tape machine can start, and the tape machine starts and accelerates the operation. After the belt machine reaches the constant speed operation state, the controller controls the tensioning device to reduce the tension. When the conveyor belt tension is reduced to the required value for normal operation, the tension stops. The tension monitoring device automatically monitors the tension of the tape at any time. Once it is found that the tension is less than the set “lower limit ”, it will restart the tensioning device and increase the tape tension. The tension buffer device can absorb the transient tension fluctuation in the belt operation during the normal transportation of the belt machine.