林木采伐机工作头设计
摘要：林业是一个国家的基础产业，是国民经济的重要组成部分。发达的林业是国家富强、民族繁荣、社会文明的重要标志之一。但是与林业发达国家相比，我国的林业机械化和自动化水平还相当低。我国森林资源紧缺，虽然森林抚育工程越来越得到国家、地区政府的大力支持，然而欧美伐木头不适合我国的抚育采伐，国内的抚育采伐工具功能单一、效率低下。此外当前国内关于森林抚育伐木头的专利甚少。因此，设计一种适合我国林区的多功能森林抚育伐木头并且对其进行专利挖掘具有重要意义。
林木联合采伐机是一种多功能、高自动化、高效率的林木采伐机械，其工作头作为其重要的组成部分将直接关系到其作业的范围、精度和效率。根据配套形式,采伐联合机基本上分为两类一类是在伐区直接生产原木,即在立木旁完成伐木、打枝、造材、截梢和归堆作业,另一类是在伐区装车场生产原木,即在立木旁完成伐木,在伐区装车场完成打枝、造材、截梢和归堆或装车作业,称原条联合机,而按其行走方式的不同,采伐联合机可分为轮式、履带式和步行式。伐木头是采伐联合机中最重要的部分。它通过液压马达连接在机械臂前端，具有伐木、打枝、量材、造材、归楞等功能。采伐头结构主要由回转马达、打枝刀、测距辊、驱动辊、锯切机构和夹抱机构等组成。
关键词：林业机械；林木采伐机；工作头
Literature review of working head design of tree cutting machine
Abstract：Forestry is the basic industry of a country and an important part of national economy. Developed forestry is one of the important symbols of national prosperity, national prosperity and social civilization. However, compared with the forestry developed countries, China#39;s forestry mechanization and automation level is quite low. However, compared with the forestry developed countries, China#39;s forestry mechanization and automation level is quite low. The shortage of forest resources in our country, although the forest tending engineering more and more have strong support from countries, regional government, however, Europe and the United States logging is not suitable for our country#39;s cradle cut head, domestic cradle cut tool function of a single, low efficiency. In addition, there are very few patents in the current domestic forest. Therefore, it is of great significance to design a multi-functional forest felling head that is suitable for forest in our country.
Trees joint cutting machine is a kind of multi-functional, high automation, high efficiency of forest tree cutting machine, the working head as its important part will be directly related to the scope of its operation, precision and efficiency. According to the supporting form, the felling machine is basically divided into two categories, namely, to produce logs directly in the cutting area, namely, to complete logging, twigs, materials, cuttings, and homing operations next to the tree. The other type is to produce logs in the cutting area, that is, to complete the logging by the side of the tree, and to finish the shoot, the material, the truncation and the return or loading operation in the cutting area, which is called the original combination machine. However, according to the different way of walking, the cutting machine can be divided into wheel type, crawler and walking type. The cutting head is the most important part of the felling machine. It is connected to the front end of the mechanical arm through a hydraulic motor. It has the functions of cutting wood, cutting branches, measuring materials, making materials and returning to the ground. The cutting head structure is mainly composed of rotary motor, cutting knife, ranging roller, driving roller, sawing mechanism and clamping mechanism.
Key words: Forestry machinery；Tree cutting machine；Work first
1、人工林的现状及发展趋势
以上是毕业论文文献综述，课题毕业论文、任务书、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。
