Opening and closing device of the utility model discloses a push rod type, including closed cylinder, main nut, hollow push rod and screw push rod assembly, wherein the main nut and a hollow push rod into a whole and closed set in the cylinder, the screw rod is installed on the main push rod nut and a hollow cavity and the formation of screw thread fit with the cylinder flange is fixed on the frame by frame in the set above the cylinder thrust bearing to install thrust roller bearings, thrust bearing is installed on the thrust bearing cover, and the thrust bearing cover and spherical roller bearing is arranged between the shoulder ring; the upper end of the screw rod is supported on the thrust roller bearing, screw nut in the bearing installation above the thrust roller bearing support part, the upper part of the bearing nut by a lock nut on the screw rod to make wire rod suspension in cylinder, the upper end of the screw rod through the The flat bond is connected to the drive shaft of the reducer. The utility model has the weight of the push rod assembly by the top support device, which can improve the reliability of the product.
【技术实现步骤摘要】
推杆式启闭装置
本技术涉及启闭装置,尤其涉及一种推杆式启闭装置。
技术介绍
推杆启闭装置用推杆直接或通过导向滑块、连杆与工件(如闸门门页)相连接,推杆上下移动时可以启闭工件。典型推杆启闭装置将其推杆总成中的丝杆上端焊接悬挂于蜗轮蜗杆变速箱内的蜗轮上,推杆总成的重量主要由涡轮承担,工作久后可能在丝杆与涡轮之间产生裂痕,由此存在可靠性问题。
技术实现思路
有鉴于此,本技术的目的在于提供一种推杆式启闭装置,用以提高产品可靠性。为解决以上技术问题,本技术提供一种推杆式启闭装置,具有包括缸筒、主螺母、空心推杆及丝杆的密闭式推杆总成,其中主螺母和空心推杆连成一个整体并密闭式地装于缸筒内,丝杆装于主螺母和空心推杆的内腔并形成螺纹配合,缸筒通过法兰盘固定于机架,机架在缸筒的上方设置止推轴承座来安装推力调心滚子轴承,止推轴承座上安装止推轴承盖,且推力轴承盖与调心滚子轴承之间安装轴肩挡圈;丝杆的上端部支撑于推力调心滚子轴承,丝杆在推力调心滚子轴承支撑部的上方安装承重螺母,承重螺母由锁紧螺母锁紧于丝杆的上端部来使得丝杆悬挂于缸筒,丝杆的上端部通过平键连接于减速机的传动轴。与现有技术相比,本技术 ...
【技术保护点】
一种推杆式启闭装置,具有包括缸筒、主螺母、空心推杆及丝杆的密闭式推杆总成,其中主螺母和空心推杆连成一个整体并密闭式地装于缸筒内,丝杆装于主螺母和空心推杆的内腔并形成螺纹配合,其特征在于,缸筒通过法兰盘固定于机架,机架在缸筒的上方设置止推轴承座来安装推力调心滚子轴承,止推轴承座上安装止推轴承盖,且推力轴承盖与调心滚子轴承之间安装轴肩挡圈;丝杆的上端部支撑于推力调心滚子轴承,丝杆在推力调心滚子轴承支撑部的上方安装承重螺母,承重螺母由锁紧螺母锁紧于丝杆的上端部来使得丝杆悬挂于缸筒,丝杆的上端部通过平键连接于减速机的传动轴。
【技术特征摘要】
1.一种推杆式启闭装置,具有包括缸筒、主螺母、空心推杆及丝杆的密闭式推杆总成,其中主螺母和空心推杆连成一个整体并密闭式地装于缸筒内,丝杆装于主螺母和空心推杆的内腔并形成螺纹配合,其特征在于,缸筒通过法兰盘固定于机架,机架在缸筒的上方设置止推轴承座来安装推力调心滚子轴承,止推轴承座上安装止推轴承盖,且推力轴承盖与调心滚子轴承之间安装轴肩挡圈;丝杆的上端部支撑于推力调心滚子轴承,丝杆在推力调心...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。