阅读说明：本技术 水轮发电机转子作业安全防坠落装置 (Safe anti-falling device for operation of hydraulic generator rotor ) 是由 卢彬 李永杰 高冠群 李甲俊 黄嘉� 高磊 郭旭东 李永红 胡立昂 张苗苗 于 2019-12-11 设计创作，主要内容包括：一种水轮发电机转子作业安全防坠落装置,由直径大于水轮发电机转子中心孔的圆形底板、可旋转立柱、梅花状多挂点安全带悬挂盘及三个固定螺栓构成,使用时,通过三个固定螺栓和水轮发电机转子上原有的上端轴安装法兰盘上的上端轴连接螺栓孔配合,即可安装在水轮发电机转子上端的中心位置,一方面封堵住水轮发电机转子的中心孔,防止检修期间人员、机件及工具不慎坠入水轮发电机转子中心孔,另一方面为检修人员在水轮发电机转子上端作业提供多个合规的安全带挂点,能确保检修人员人身安全；而多安全带挂点设计,又使其能够满足多位登顶水轮发电机转子上端的检修人员同时使用的需要,适应水轮发电机转子大修更多的是多位检修人员协同作业的工况。(A hydro-generator rotor operation safety anti-falling device comprises a circular bottom plate, a rotatable upright post, a plum blossom-shaped multi-hanging-point safety belt hanging disc and three fixing bolts, wherein the diameter of the circular bottom plate is larger than the center hole of a hydro-generator rotor, the plum blossom-shaped multi-hanging-point safety belt hanging disc is matched with an upper end shaft connecting bolt hole on an original upper end shaft mounting flange disc on the hydro-generator rotor when the anti-falling device is used, the anti-falling device can be mounted at the center position of the upper end of the hydro-generator rotor, on one hand, the center hole of the hydro-generator rotor is blocked, and personnel, machine parts and tools are prevented from accidentally falling into the center hole of the hydro-generator rotor during maintenance, on the other; and many safety belts hanging point designs make it can satisfy the needs that the maintainer of many tops of climbing hydraulic generator rotor upper end used simultaneously again, and what the adaptation hydraulic generator rotor overhaul was more is the operating mode of many maintainers collaborative operation.)

1. The utility model provides a hydraulic generator rotor operation safety anti-falling device which characterized in that: the hydraulic generator rotor is composed of a circular bottom plate (1) with the diameter larger than a center hole of a hydraulic generator rotor, a rotatable upright post (3), a plum blossom-shaped multi-hanging-point safety belt hanging disc (4) and three fixing bolts (2), wherein three mounting feet (11) are uniformly distributed on the periphery of the circular bottom plate (1) and correspond to upper end shaft connecting bolt holes in an original upper end shaft mounting flange plate on the hydraulic generator rotor, and the three mounting feet (11) are respectively provided with a fixing bolt hole for mounting the circular bottom plate; each petal of the plum blossom-shaped multi-hanging-point safety belt hanging disc (4) is provided with a safety belt hanging hole (41); the rotatable upright column comprises an outer cylinder body (32), an inner core shaft (34), an upper radial bearing (33) and a lower thrust bearing (31), wherein the upper radial bearing and the lower thrust bearing are used for installing the inner core shaft in the outer cylinder body, the lower end of the outer cylinder body (32) is fixedly arranged at the central position of the circular bottom plate (1), and the upper end of the inner core shaft (34) is fixed with the central position of the bottom of the plum blossom-shaped multi-hanging-point safety belt hanging disc (4).

2. The hydro-generator rotor operation safety anti-falling device of claim 1, wherein: and tetrafluoro gaskets (12) are also arranged at the bottoms of the three mounting feet (11) of the circular bottom plate.

3. The hydro-generator rotor operation safety anti-falling device as claimed in claim 1 or 2, wherein: the plum blossom-shaped multi-hanging-point safety belt hanging disc (4) is provided with six petals, and each petal is provided with a safety belt hanging hole (41).

Technical Field

The invention relates to a special apparatus for overhauling a hydraulic generator rotor, in particular to a safe anti-falling device for the operation of the hydraulic generator rotor.

Background

The overhaul of the hydro-turbo generator set is the work that the power generation enterprises must do every few years, and the performance of the equipment is maintained, recovered or improved by carrying out comprehensive disassembly inspection and repair on the generator set. The overhaul of the hydroelectric generating set comprises various inspections and repairs of a rotor after the rotor is lifted out of a machine pit, the large-scale hydroelectric generating set rotor is placed on a buttress after being lifted out of the machine pit, the rotor is four or five meters high from the ground to the upper end of the rotor, and at the height, a maintainer needs to stand carefully and stably and move and apply force to perform various operations; the safety accidents in the overhaul of the rotor of the hydraulic generator not only have personal safety accidents of maintainers, but also include a plurality of equipment and equipment safety accidents, and because the maintainers are in a nervous state for a long time during the operation of the upper end of the rotor, the accidents that machine parts and hand-held tools which are being disassembled fall due to fatigue and numbness often occur, the machine parts and the tools which fall are damaged, or the rotor body is injured and scratched by smashing, the economic loss is huge.

The falling accident is the most serious, particularly the falling accident into the central hole of the rotor, and the central hole of the rotor is deep and has small diameter, so that the falling accident of personnel can increase scratch and bruise, and the rescue is difficult; the picking of falling parts and tools can be laborious if the parts and tools fall.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a device which can block the central hole of the hydraulic generator rotor during overhaul and provide a compliant safety belt hanging point for a maintainer on the upper end site of the rotor so as to comprehensively ensure the safety of overhaul operation, namely a hydraulic generator rotor operation safety anti-falling device.

The purpose of the invention can be realized by the following technical scheme: the device capable of blocking the center hole of the hydraulic generator rotor during overhaul and providing a compliant safety belt hanging point for an overhaul worker on the upper end site of the rotor so as to comprehensively ensure the safety of overhaul operation is a hydraulic generator rotor operation safety anti-falling device, which consists of a circular bottom plate with the diameter larger than the center hole of the hydraulic generator rotor, a rotatable upright post, a plum blossom-shaped multi-hanging-point safety belt hanging disc and three fixing bolts, wherein three mounting feet are uniformly distributed on the periphery of the circular bottom plate and correspond to upper end shaft connecting bolt holes on an original upper end shaft mounting flange disc on the hydraulic generator rotor, and the three mounting feet are respectively provided with a fixing bolt hole for mounting the circular bottom plate; each petal of the plum blossom-shaped multi-hanging-point safety belt hanging disc is provided with a safety belt hanging hole; the rotatable upright column comprises an outer cylinder body, an inner core shaft, an upper radial bearing and a lower thrust bearing, wherein the upper radial bearing and the lower thrust bearing are used for installing the inner core shaft in the outer cylinder body, the lower end of the outer cylinder body is fixedly arranged at the center of a circular bottom plate, and the upper end of the inner core shaft is fixed with the center of the bottom of the plum blossom-shaped multi-hanging-point safety belt hanging disc. When the safety anti-falling device for the operation of the hydraulic generator rotor is used, the three fixing bolts are matched with the upper end shaft connecting bolt holes on the original upper end shaft mounting flange plate on the hydraulic generator rotor, so that the safety anti-falling device can be mounted at the central position of the upper end of the hydraulic generator rotor, on one hand, the central hole of the hydraulic generator rotor is blocked, the careless falling of personnel, parts and tools into the central hole of the hydraulic generator rotor during maintenance is prevented, and on the other hand, a plurality of safety belt hanging points are provided for the operation of the maintenance personnel at the upper end of the hydraulic generator rotor.

According to the safe anti-falling device for the operation of the hydraulic generator rotor, the tetrafluoro gaskets which can prevent damage and scratch the upper end shaft mounting flange plate on the hydraulic generator rotor can be further arranged at the bottoms of the three mounting feet of the circular bottom plate.

The safety anti-falling device for the operation of the hydraulic generator rotor preferably comprises a plum blossom-shaped multi-hanging-point safety belt hanging disc with six petals, and each petal of the safety belt hanging disc is provided with a safety belt hanging hole.

The safety anti-falling device for the operation of the hydraulic generator rotor has simple structure and simple and convenient installation, can provide a closest safety belt hanging point for a maintainer no matter the maintainer climbs the upper end of the hydraulic generator rotor from the same direction when in use, ensures that the maintainer can use the safety belt when the maintainer climbs the upper end of the hydraulic generator rotor for the first time, and, in the using process, because the safety belt hanging point used by the maintainer can rotate along with the movement and the dragging of the maintainer, the situation that the hanging point needs to be reselected to hang the safety belt due to the change of the position of the maintainer can not occur, the risk caused by instantaneous loss of safety measures due to the fact that safety belts are hung again can be avoided, the safety measures of the maintainers are guaranteed to be uninterrupted during the period that the maintainers climb the upper end of the rotor of the hydraulic generator, and personal safety of the maintainers is guaranteed; and many safety belts hanging point designs make it can satisfy the needs that the maintainer of many tops of climbing hydraulic generator rotor upper end used simultaneously again, and what the adaptation hydraulic generator rotor overhaul was more is the operating mode of many maintainers collaborative operation.

Drawings

Fig. 1 is a schematic view of a safety fall-preventing device for operation of a rotor of a hydro-generator according to an embodiment of the present invention;

fig. 2 is a schematic bottom view of a circular base plate mounting foot of the hydro-generator rotor operation safety anti-falling device provided by the embodiment of the invention;

the labels in the figure are: 1. circular bottom plate, 11, installation foot, 12, tetrafluoro gasket, 2, fixing bolt, 3, rotatable stand, 31, thrust bearing, 32, outer barrel, 33, radial bearing, 34, inner core axle, 4, plum blossom form multiple hanging point safety belt hanging disc, 41, safety belt hanging hole.

Detailed Description

The present invention is further described in detail below with reference to examples, but the scope of the present invention is not limited thereto, and the scope of the invention is set forth in the claims.

Referring to the attached drawings, the embodiment of the invention provides a safe anti-falling device for operation of a hydraulic generator rotor, which is composed of a 10mm thick steel circular bottom plate 1 with the diameter larger than a center hole of the hydraulic generator rotor, rotatable upright posts 3, a 10mm thick steel quincunx multi-hanging-point safety belt hanging disc 4 and three fixing bolts 2, wherein three mounting feet 11 are uniformly distributed on the periphery of the circular bottom plate 1, tetrafluoro gaskets 12 are adhered to the bottoms of the three mounting feet 11 and correspond to upper end shaft connecting bolt holes on an original upper end shaft mounting flange disc on the hydraulic generator rotor, and the three mounting feet 11 are respectively provided with a fixing bolt hole for mounting the circular bottom plate; the plum blossom-shaped multi-hanging-point safety belt hanging disc 4 is provided with six petals, and each petal is provided with a safety belt hanging hole 41; the rotatable upright column comprises an outer cylinder body 32, an inner core shaft 34, an upper radial bearing 33 and a lower thrust bearing 31, wherein the upper radial bearing 33 and the lower thrust bearing 31 are used for installing the inner core shaft in the outer cylinder body, the lower end of the outer cylinder body 32 is fixed at the central position of the circular bottom plate 1, and the upper end of the inner core shaft 34 is fixed with the central position of the bottom of the plum blossom-shaped multi-hanging-point safety belt hanging disc 4.