机械5

带液压缸的带式输送机液压拉紧系统设计 DESIGN OF HYDRAULIC TENSIONING SYSTEM FOR BELT CONVEYOR WITH HYDRAULIC CYLINDRE 摘要 随着当代科技的发展，带式输送机的用途正在发生日异月新的变化。带液压油缸的带式输送机发展尤为迅速，其性能功率正影响着机械行业的各个领域。作为机械专业的一名大学生面对我们国家的机械行业的壮大感到深深的震撼。在带式输送机的制启过程中，研究力的变化对带式输送机使用寿命的影响尤为重要。在此过程中，拉紧力变化应与带式输送机张力变化相适应，对此研究带式输送机动态变化成为我们去探讨的重点。 在本次的带液压油缸的带式输送机液压拉紧系统设计中，我们的设计应本着一些基本原则：在电机启动过程中，拉紧力变化应该在电机驱动力变化范围之内，不应超出电机载荷；在电机制动过程中，皮带张力应自动松弛以减缓对带式输送机造成的负面影响。自适用拉紧系统在本次的设计中起到关键作用，不仅如此，其他行业对自适用控制理论的应用更为广泛。采用液压拉紧装置可以很轻松的解决皮带传动过程中存在的拉紧问题，能实现传动过程中拉紧控制的调节，使带式输送机的制启过程有效方便的进行。 关键词；带液压油缸；带式输送机；液压拉紧装置；拉紧力；皮带张力 Abstract With the developme
nt of moder
n scie
nce a
nd tech
nology, the use of belt co
nveyor is cha
ngi
ng. The belt co
nveyor with hydraulic cyli
nder is developi
ng rapidly, a
nd its performa
nce power is affecti
ng all fields of the machi
nery i
ndustry. As a college stude
nt i
n the mecha
nical professio
n, we are deeply shocked by the growth of the mecha
nical i
ndustry i
n our cou
ntry. It is very importa
nt to study the i
nflue
nce of the cha
nge of force o
n the service life of belt co
nveyor i
n the process of maki
ng up belt co
nveyor. I
n this process, the te
nsio
n force cha
nge should be adapted to the te
nsio
n cha
nge of the belt co
nveyor. The research o
n the dy
namic cha
nge of the belt co
nveyor has become the focus of our discussio
n . I
n the system desig
n of the belt co
nveyor with te
nsio
ni
ng, our desig
n should be based o
n some basic pri
nciples: duri
ng the motor start-up process, the te
nsio
n force cha
nge should be withi
n the ra
nge of motor drivi
ng force cha
nge, should
not exceed the motor load; Duri
ng the braki
ng process of electric machi
ne, belt te
nsio
n should be relaxed automatically to slow dow
n the
negative impact o
n belt co
nveyor. The self-applicatio
n te
nsio
ni
ng system plays a key role i
n this desig
n. Not o
nly that, but other i
ndustries have applied the self-applicatio
n co
ntrol theory more widely. The use of hydraulic te
nsio
n device ca
n easily solve the te
nsio
n problem i
n the process of Pidaichua
ndo
ng, a
nd ca
n realize the adjustme
nt of te
nsio
n co
ntrol i
n the tra
nsmissio
n process, so that the belt co
nveyor's ope
ni
ng process ca
n be effectively a
nd co
nve
nie
ntly carried out. Keywords hydraulic cyli
nder hydraulic te
nsio
ni
ng device tighte
n force belt te
nsio
n 目录 摘要I Abstract II 1绪论1 1.1带液压油缸1 1.1.1带液压油缸定义1 1.1.2液压油缸的组成及原理1 1.1.3带液压油缸的分类2 1.2带式输送机2 1.2.1带式输送机对液压拉紧系统的要求3 2拉紧装置4 2.1拉紧装置简介4 2.1.1拉紧装置的发展历程4 2.1.2带式输送机对拉力系统要求4 2．2张紧装置的组成及其主要功能4 2．2．1张紧装置的组成4 2.2.2带式输送机张力装置的作用5 2.3带式输送机对张紧装置的性能要求5 2.3.1自动跟踪性能5 2.3.2克服系统的滞后性能6 2.3.3克服工作条件的变化6 3皮带张紧器液压拉紧系统设计11 3.1带式输送机液压伺服张紧系统总体设计11 3.1.1液压拉紧装置的构成和工况分析11 3.1.2伺服张紧装置的特点13 3.2建立液压张紧系统模型13 3.2.1建立液压缸阀控制的相关表达式13 3.3系统模型仿真分析16 3.3.1实验仿真数据17 3.3.2由仿真函数求得系统函数传递值20 结论22 致谢23 参考文献24