Safety technical inspection of crane
Safety inspection technology is the key for heavy equipment management, effect using heavy machinery to a large extent determined in heavy machinery used in the process of safety and technical inspection and daily maintenance of the quality of maintenance and management. Do crane safety inspection technology, and based on the actual situation of the inspection, timely maintenance, maintenance, to extend equipment service life, improve equipment intact rate and utilization rate, eliminate hidden dangers of accidents to ensure safety in production, with important significance.
In order to guarantee from the safe operation of heavy machinery, shall establish and improve a hoisting machinery maintenance, regular inspection, safety regulations and shift system, education and relevant personnel carefully executed. The unit of heavy machinery should register, a detailed record of the every cranes, specifications, and other relevant technical data, at the same time, the crane of the previous technical inspection, overhaul, change the crane important performance and major accidents, should make a record, to preparation day after search and reference.
Do crane safety management work is an important content, is the need to strengthen safety education to the crane operator, supervise the operator conscientiously do a good job on the daily inspection of crane and maintenance. The safety inspection of the daily pre class crane and electrical system is the work of the operator's responsibility. Only daily inspection and professional inspection combined to ensure the safe operation of the crane.
Test of running environment
Although the operating environment is not the scope of the crane itself, but the safe operation of the crane has a direct relationship, it is also an essential part of the safety inspection of cranes. The inspection of a crane to see the operating range of the power line (especially the high-voltage line), the crane should be maintained at the time of the safe distance. Otherwise, corresponding measures should be taken to limit the operating range of the crane. To check the surrounding buildings, temporary facilities have no interfere with the normal operation of the crane, boom, balance and other parts will collide with the, especially in portal crane rail extension or stationary crane lift high displacement, especially should pay attention to check. There should also be a sufficient test for the vehicle crane to have enough support to the leg, the ground floor and the size of the bearing capacity of the ground. Detailed inspection of crane rail, rail, rail ends of the collision avoidance device, the track of the track and the rail temperature gap, etc..
Two, walking part of the inspection
Check the main walking wheel tread, the open wheel, coupling, transmission of the foundation bolts and walking wheel of the oil hole and site such as walking wheel tread surface hardness of the quality is not good, in the inspection can be seen on the block, overburden, and the open wheel, shaft coupling should be equipped with protective cover; if the transmission of the foundation bolts loose should be tightened in time; to keep walking axle oil hole smooth.
Three, metal structure inspection
Must pay attention to the plastic deformation of the metal structure. Girder arch degree is a key parts of the inspection of crane structure and avoid the overload, thermal radiation and other factors of the effects caused by crane girder arch disappear even under torsion. Also for boom with or without touch the bending and twisting; arm and balance arm root portion of the bolt lug, the bridge crane girder webs under cover and whether the split between weld should focus on examination.
Examination of important parts of the crane, tower crane tower, portal crane rotary center bearing seat, a crawler crane base is the main structure of the bolt. Because of the position of the frequent bolt under tensile force, shearing force and torque force, if occurred from the root fracture of the consequences will be very serious.
Four. Check the body and parts.
1, brake brake is an important component of the crane, a direct impact on the accuracy of the mechanism motion reliability. Therefore, it is necessary to carefully check up mechanism and luffing mechanism of the brake, brake shoe open degree and the friction element wear was observed. Band brake should pay attention to check the brake band steel back lining crack, the drive brake is flexible, brake frame is in good condition and main spring and an auxiliary spring elastic whether meet the requirements.
2, reducer to check whether there is leakage of oil, running the box body is no different. There are different ring general due to bearing problems or gear meshing side gap is too large, tooth wear and other reasons caused by serious.
3, steel wire rope and check the pulley wire rope has no breakage, abrasion, kink and corrosion, etc., to wear, broken wires in a more serious but not yet the standard position, to mark to focus on re examination; examination of wire rope reel safety limit is whether effective, reel wire rope clamp is pressed.
Inspection of the pulley is focused on whether the end of the groove wear is excessive, whether there is a crack in the cast iron pulley. Pitching mechanism of pulley block balance wheel is easy to be ignored, the installation must be checked before the rotation flexibility, if the balance wheel rotation is not flexible, installation about stoop Yang rope length and tension can not be the balance wheel adjustment from will increase in altitude adjustment stoop Yang steel wire rope and the difficulty of operating risk.
4 coupling, check the availability of loose coupling or "roll key". Focus on examination of elastic column pin joint coupling of the elastic rubber ring any abnormal wear, gear coupling should pay special attention to the pinion and ring gear wear condition. In between the two, the installation of the accuracy with larger offset case, the ring gear will soon bald. If this is the case, it is easy to have a serious occurrence.
起重机安全技术检验安全检测技术是影响很大的程度上,决定在安全和技术检查和日常维护质量的维护和管理过程中使用的重型机械使用重型机械重型设备管理的关键。做起重机安全检测技术和基于检查的实际情况,及时维护,保养,延长设备使用寿命,提高设备完好率和利用率,消除安全的隐患的事故,确保安全生产,具有重要的意义。为了保证从重型机械的安全运行,应建立和完善起重机械维修、 定期检查、 安全规程和转移制度、 教育和相关人员认真执行。重型机械单位应登记,每个起重机,规格,详细的记录和其他有关的技术资料,同时,起重机的以前的技术检查,检修,更改重要性能和重大事故,应使记录向后搜索和引用的预备日起重机。做起重机安全管理工作是一项重要内容,是需要加强对起重机操作员安全教育,监督经营者认真做好日常检验的起重机和维护工作。每日预类起重机和电气系统的安全检查是责任的经营者的工作。只有日常检查和专业检查相结合,确保起重机的安全运行。运行环境试验虽然经营环境不是起重机的范围本身,但对起重机的安全运行有着直接的关系,它也是起重机的起重机安全检查的重要组成部分。检查的看到电源线 (尤其是高电压线) 的经营范围一台起重机,起重机应保持安全距离的时间。否则,应采取相应措施限制起重机的操作范围。若要检查周围的建筑,临时设施没有干扰正常运行的起重机,繁荣、 平衡和其他零件会碰撞,特别是在门户起重机轨道扩展或固定式起重机升降机高位移,尤其应注意检查。应该有充分的测试车辆起重机有腿、 地面地板和地基承载力的大小足够的支持。详细检查起重机钢轨、 轨、 轨端的防碰撞装置,轨道的轨道的钢轨温度差距等......二、 行走部分的检查检查主要行走车轮踏面、 块、 上覆岩层和开放的车轮上可以看到开放的车轮,耦合、 传输的基础螺栓和行走轮的油孔和网站如行走车轮踏面表面硬度的质量不是好的在检查、 联轴器应配备保护罩;如果传输的基础螺栓松动应收紧在时间;要坚持走下去轴油孔光滑。三、 金属结构检测必须注意的金属结构的塑性变形。主梁拱度是检验起重机结构的关键部件,避免过载,热辐射和其他因素的影响造成的起重机主梁拱消失甚至下挠。也为繁荣有或没有触摸的弯曲和扭曲;臂和平衡臂根螺栓把手,桥式起重机主梁的部分站点掩护下,是否焊缝之间的分歧应重点检查。起重机、 塔式起重机塔、 门座起重机回转中心轴承座、 履带式起重机基地的重要组成部分的考试是螺栓的主要结构。由于频繁螺栓的拉伸力、 剪力和扭矩力的位置如果发生从根部断裂的后果将非常严重。四。检查身体和零件。1, brake brake is an important component of the crane, a direct impact on the accuracy of the mechanism motion reliability. Therefore, it is necessary to carefully check up mechanism and luffing mechanism of the brake, brake shoe open degree and the friction element wear was observed. Band brake should pay attention to check the brake band steel back lining crack, the drive brake is flexible, brake frame is in good condition and main spring and an auxiliary spring elastic whether meet the requirements.2, reducer to check whether there is leakage of oil, running the box body is no different. There are different ring general due to bearing problems or gear meshing side gap is too large, tooth wear and other reasons caused by serious.3, steel wire rope and check the pulley wire rope has no breakage, abrasion, kink and corrosion, etc., to wear, broken wires in a more serious but not yet the standard position, to mark to focus on re examination; examination of wire rope reel safety limit is whether effective, reel wire rope clamp is pressed.Inspection of the pulley is focused on whether the end of the groove wear is excessive, whether there is a crack in the cast iron pulley. Pitching mechanism of pulley block balance wheel is easy to be ignored, the installation must be checked before the rotation flexibility, if the balance wheel rotation is not flexible, installation about stoop Yang rope length and tension can not be the balance wheel adjustment from will increase in altitude adjustment stoop Yang steel wire rope and the difficulty of operating risk.4 coupling, check the availability of loose coupling or "roll key". Focus on examination of elastic column pin joint coupling of the elastic rubber ring any abnormal wear, gear coupling should pay special attention to the pinion and ring gear wear condition. In between the two, the installation of the accuracy with larger offset case, the ring gear will soon bald. If this is the case, it is easy to have a serious occurrence.
正在翻譯中..
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