该专利技术的有益效果是： 1.该自由门控制器的上轴转动控制装置采用上置式安装，设置在门扇顶部的门框上，不需要在制作门框时预设天轴插销，也不需要在地面上开凿或预留方洞，而只是在门框制作和地面施工完成后进行安装，省时省力。 2．改变液压式凸轮结构为弹簧板阻尼结构，体积小，重量轻，结构精密，性能稳定。 3．转轴控制装置采用上置式安装，改变了传统的转轴控制装置下置式安装承载门体重量的缺陷；上轴转动装置采用轴承机构，较传统地弹簧的上轴插销和上轴轴套之间的摩擦力减小，下轴采取圆锥轴承支撑，摩擦力减小，门扇开启所需驱动力较传统地弹簧小，所以控制器弹性部件所需弹力减小，各工作部件之间受力及磨损减小，使用寿命延长，可靠性提高。 4．用途广泛，可以替代目前普遍采用的地弹簧，适用于铝合金自由门，玻璃自由门，木制、钢制自由门等。 以上为授权专利说明书中的有益效果，下面是实际应用中的有益效果。 1.节能降耗：“恒仪天轴”重量为1.5公斤/只左右，地弹簧重量约为5.5公斤/台，“恒仪天轴”可替代地弹簧的功能且用途更为广泛，按我国县级区域年用量20000只估算，若推广此项技术，每年可为国家节约上千万吨钢铁等金属材料。 2.安装省时省力：“恒仪天轴”的安装用时约为地弹簧的二十分之一，且劳动强度大幅度降低。 3.清洁环保：由于采取了与地弹簧完全不同的控制机构，彻底杜绝了磨损漏油等问题，不污染环境，清洁美观。 4.降低费用：用户购买“恒仪天轴”，使用寿命是同价位“地弹簧”的数倍。 自由门控制器--恒仪天轴的8大功能特点: （取代地弹簧） 专利技术：新概念 新技术 打破旧传统. 用途广泛：替代旧产品、用途更广泛。可以在原地弹簧报废后从地面上拆除，填平预留洞，改用本产品。 品种齐全：型号多样。可以适用于各种尺寸、各种材质的门。 使用寿命长：天轴 “恒仪天轴”不承载门体重量，控制部件受力小、磨损小，使用寿命长,是同价位地弹簧的数倍。地轴承重，采取圆锥轴承支撑，转动灵活、性能稳定，安全可靠。 安装方便：后置式安装、工艺简单。不用事先在地面开凿槽口和水泥施工，只需在地面钻孔放入地轴即可，安装便捷。 开闭灵活：开闭轻松、舒适自如。可以方便地调节开闭力度和开闭速度。 定位精准：由于特殊的控制机构，门体开启、关闭定位准确，不存在定位不准，关闭不严的问题。 外形美观：不锈钢或钛金外表，豪华大方。不漏油，无污染，清洁美观。 The beneficial effects of this patent technology: 1、The top axis rotational control device of this free door controller is installed on the door frame, which is on the top of the door, in the upper/top manner. There is no need to preinstall shaft bolt while making the door frame as well as to excavate or to prepare quadrate hole in advance. The device can be installed after the door frame manufacture and the floor construction, saving time and effect efficiently. 2、Spring plate damp structure is employed/used to replace the traditional hydraulic cam structure so that small size，light weight，precise structure and stable performance/quality can be guaranteed. 3、The revolution axis control device is installed in the upper/top manner to improve the disadvantage that the traditional revolution axis control device in the underneath type bears the gate body weight. Shaft bearing device is employed for the upper axis rotation installment to reduce the frictional force between the upper roll clevis pin and the upper roll axle sleeve. The tapered shaft bearing is used/adopted to support the lower shaft in order to reduce the frictional force. The driving force for opening the door leaf is smaller comparing with the traditional floor spring, so the elastic force which the controller elastic part needs is smaller too, and the stress and the attrition are reduced between each working part. The prolonged longevity and improved reliability are guaranteed in this way. 4、It is widely used and can replace the floor spring which is generally used at present. It is suitable for aluminum alloy free gate、glass free gate、wooden or steeliness free gate and so on. The above is the beneficial effects announced in the authorization specification, and the below is the beneficial effects in practical application. 1、Energy saving and consumption lowering: The weight of “Hengyi line shaft” is about 1.5 kilograms while the floor spring weights approximately 5.5 kilograms. “Hengyi line shaft” can replace the floor spring functionally and can be more widely used. According as the year consumption amounts to about 10000 in our country’s county level region, it may save more than ten million tons of steel and iron metal materials and so on every year for the country if this technology can be widely promoted. 2、Time-saving and effort-saving installation: The installation procedure of “Hengyi line shaft” only takes about 1/20 of time approximately comparing with the installation of the place spring while the labor intensity can be reduced in large scale. 3. Environment protecting: Due to/Owing to the completely different control mechanism comparing with the place spring, the problems with attrition, oil leak and so on can be ceased thoroughly so that pollution-free quality and clean appearance can be guaranteed. 4. Expense reducing: The longevity of “Hengyi Tianzhou” is several times of that of the “the floor spring” at the same price. Freedom door Controller - 8 functional characteristics of Hengyi line shaft: (replacing the floor spring) Patent technology: New concept, new technology, breaking the old tradition. Versatility: It can substitute the old products and wider usage can be fulfilled. The reserved hole can be filled and leveled up to use this product when the original floor spring was discarded as it is no longer used. Sufficient variety: The models are diverse and are suitable for gates of diverse size and material quality. There is no need for the “Hengyi line shaft” to bear the gate body weight so that smaller stress of the control device and the reduction of attrition can be guaranteed. The prolonged longevity is several times of that of the “the floor spring” at the same price. The earth axis bears the weight using the tapered bearing for support, so that it can rotate flexibly and stable performance as well as reliability can be fulfilled. Easy to install: There is no need for the notch-digging and the concretes work, but only to drill a hole on the ground and put the earth axis into the hole. Convenient installation is guaranteed. Nimble open/close: Easy, comfortable to open and close. The strength and speed of opening and closing can be adjusted conveniently. Precise localization: As a result of the special control mechanism, the door’s opening and closing localization are accurate, and there does not exist the problem that localization is not accurate or does not arrives at the position. Artistic outlook：Stainless steel or titanium gold appearance，luxurious/fancy and decent. Oil leak-free, pollution-free, clean and concise.

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