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 Wysłany: Sob 23:45, 07 Maj 2011 Temat postu: franklin & marshall Unloader operations and grab t |
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Unloader operations and grab the automatic swing control
Acceleration speed to 112 rated speed, and to maintain until the completion of 112 to grab the swing cycle, and then to the original acceleration of the car to accelerate to rated speed operation,[link widoczny dla zalogowanych], in order to achieve the initial grab sway. If you choose to static discharge, hopper car in the proper position before the start to a constant deceleration rate of deceleration to 112 and maintain the rated speed until the completion of the grab 1 / 2 sway cycle, and then slow down to the original car deceleration stop position, to achieve still grab the top of the hopper discharge, discharge after lifting the car and then run to the hopper side of the reverse curve of the speed control operation, that is, grab the automatic cycle to achieve discharge; If you select dynamic discharge , hopper car in the proper position before the constant deceleration to slow down to zero, and wait for the grab to complete 1 / 2 the total sway cycle analogy. Ro, 6g'2007IISlll,[link widoczny dla zalogowanych], 1. 3 Total Pi luj (deceleration time of such working conditions less than 1 / 2 sway cycle), when put to the car before the bottom of the grab, the grab bucket while the discharge opening, and then from rise and then reverse the car running. From the comparison between the two point of view, dynamic unloading, due to the opening of the grab bucket deceleration time and the car forward and reverse acceleration time to overlap, thus increasing production efficiency. Static and dynamic discharge discharge shown in Figure 4 and 5, respectively. This method is relatively simple, and relatively high production efficiency, should be widely applied shake, ',, car run time in Figure 4 one-way car to run second car acceleration and deceleration method of static discharge running time of Figure 5 one-way car is running the second acceleration and deceleration method 2.4 Other methods dynamically unloading the car running before the start position and stop position can also be placed under long-grab by two different two different acceleration and deceleration, or be adjusted according to the actual length of the car put acceleration and deceleration to grab to control the swing of the purpose, this paper will not elaborate. 3 program control block diagram of the automatic unloader unloading process in addition to the swinging of the grab to control, but also take full account of productivity and job security. To improve efficiency, should try to grab the car running time and enhance the overlap time (the best track), thus shortening the operating cycle. To ensure safety, should grab and hold or hopper to prevent collisions between. Figure 6 shows the acceleration and deceleration using the second method the procedure control block diagram. 4 Conclusion This article describes the automatic operation of several ship unloader swing control of the process of party power grab lY Ya machinery continued to rise I soil N / Lei ',,, i touch Zhao / V put an iterative method to calculate the average length 』Back I determined,[link widoczny dla zalogowanych], 2, and, 2J calculated according to the hopper to run before the detection of trace le point grab the height / i N / wife afternoon mu,[link widoczny dla zalogowanych], Static father stabbed Rights Il Ci 1 state fleet by Jing Ba ql ● La bottles back to the dumb farm Kui step process control block diagram of the method in Figure 6, the company invested in my machine automatically unloading operation has been successfully applied, in particular, the second acceleration and deceleration method, the calculation is relatively simple, efficient and higher, should be widely applied. References: [1】 Yan Ming law, a single rainbow tone. Wenzhou Power Plant Electrical Control System unloader 【JJ. Refrigeration Air Conditioning & Electric Power Machinery, 2006, (1). Received date :2007 -09-17 Revised :2007-1O a 1OAutomationandGrabSwingControlofaShipunloaderYANLv-ming,[link widoczny dla zalogowanych], HUGuang-yue, XUJing, XIANGJian-rong (HangzhouHuaxinMechanicalandElectricalEngineeringCo., Ltd, Han ~ u310030, China) Abstract: Introducedtheautomationprocessofthegraboperationofgrabtypeshipunloaders, establishedthemathematicalmodelofthegrabswing, putforwardseveralmethodsofswingcontrolandrecommendedespeciallythetwostepspeed- up (down) methodwhichisveryusefu1. Keywords: shipunloader; automationprocess; grab; swingcontrol Author: Yan Ming Law (1957 a), male, Hangzhou, senior engineer, chief engineer. 11N total. First. 6/Il2080 stabbed 7 2 curl
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