CN114890109A - A large transformer steering device and method - Google Patents

A large transformer steering device and method Download PDF

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Publication number
CN114890109A
CN114890109A CN202210556600.0A CN202210556600A CN114890109A CN 114890109 A CN114890109 A CN 114890109A CN 202210556600 A CN202210556600 A CN 202210556600A CN 114890109 A CN114890109 A CN 114890109A
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turntable
annular
steel
steel rail
ring
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任洪涛
卢求真
陈建锋
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/52Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
    • B65G47/53Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G35/00Mechanical conveyors not otherwise provided for
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

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  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The invention provides a large-scale transformer steering device and a method, wherein the steering device comprises two steel rails, the extending directions of the two steel rails are different, and annular turntables are arranged at the corners of the two steel rails; the annular turntable is provided with a turntable steel rail, a transition steel rail is arranged between the turntable steel rail and the steel rail to form connection between the turntable steel rail and the steel rail, the center of the annular turntable is provided with a center buttress, and the annular turntable rotates along the center buttress at the center to form steering of the large transformer. The steering device provided by the invention can realize steering of a 300 t-grade large transformer, and has a small turning radius; the steering method provided by the invention has the advantages that the steering process is simple, the transformer does not need to be lifted, the steering is realized by the rolling friction of the support balls, the resistance is small, and the required tension of the winch is small; the track of the support ball in the steering device provided by the invention is fixed, the stress is uniform, each support ball bears the gravity of the transformer stably in the steering process, and the reliability is high.

Description

一种大型变压器转向装置及方法A large transformer steering device and method

技术领域technical field

本发明属于大型变压器安装技术领域,尤其是涉及一种大型变压器转向装置及方法。The invention belongs to the technical field of large-scale transformer installation, and in particular relates to a large-scale transformer steering device and method.

背景技术Background technique

很多大型抽水蓄能电站、水电站的厂房位于山体内,需要将变压器运输至山体中,不少电站受地形、地质条件的限制,进厂交通洞与变压器安装间垂直,变压器就位需要完成一侧转向。360MVA及以上容量的大型变压器外形为长条形,变压器运输车在地下厂房转弯的半径比较大,如果采用运输车转向,不仅地下厂房开挖投资很大,对司机技术水平要求也很高,一旦出现失误造成损失较大。Many large-scale pumped-storage power plants and hydropower plants are located in the mountains, and the transformers need to be transported to the mountains. Many power plants are restricted by terrain and geological conditions. The traffic tunnel entering the plant is perpendicular to the transformer installation room, and the transformer needs to be installed on one side. turn. Large-scale transformers with a capacity of 360MVA and above are elongated in shape, and the turning radius of the transformer transporter in the underground workshop is relatively large. If the transporter is used to turn, not only the investment in the excavation of the underground workshop is large, but also the technical level of the driver is very high. Mistakes result in greater losses.

中国专利CN102110955A公开了一种基于环形轨道的转向装置,但由于小车的滑轮为直型,且轨道圆弧度有偏差时,很容易出现卡死现象。Chinese patent CN102110955A discloses a steering device based on an annular track, but since the pulley of the trolley is straight, and the track circular arc is deviated, it is easy to get stuck.

中国专利CN207107816U公开了一种基于转盘的转向结构,该转盘采用了大量小型滚珠,滚珠无固定轨道,且小型滚珠承受压强较小,在转向过程中,滚珠很容易出现不均匀分布,导致部分滚珠被压碎,导致变压器失去平衡发生倾斜;并且这种方式转向时需要采用千斤顶等工具将变压器抬起,过程费时费力,适合对重量在200t以下的变压器转向。Chinese patent CN207107816U discloses a steering structure based on a turntable. The turntable uses a large number of small balls, the balls have no fixed track, and the small balls bear less pressure. During the steering process, the balls are easily distributed unevenly, resulting in some balls. It is crushed, causing the transformer to lose its balance and tilt; and when turning in this way, it is necessary to use tools such as jacks to lift the transformer, which is time-consuming and labor-intensive, and is suitable for turning transformers weighing less than 200t.

发明内容SUMMARY OF THE INVENTION

本发明第一个目的在于,针对现有技术中存在的不足,提供一种大型变压器转向装置。The first objective of the present invention is to provide a large-scale transformer steering device in view of the deficiencies in the prior art.

为此,本发明的上述目的通过如下技术方案实现:For this reason, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

一种大型变压器转向装置,包括两条钢轨,两条钢轨的延伸方向不同,两条钢轨的拐角处设有环形转盘;A large-scale transformer steering device comprises two steel rails, the extending directions of the two steel rails are different, and an annular turntable is arranged at the corners of the two steel rails;

所述环形转盘上设有转盘钢轨,所述转盘钢轨与钢轨之间设置过渡钢轨以形成转盘钢轨与钢轨之间的衔接,所述环形转盘的中央具有中心支墩,所述环形转盘沿着中央的中心支墩转动以形成对大型变压器的转向。The annular turntable is provided with a turntable rail, and a transition rail is arranged between the turntable rail and the rail to form the connection between the turntable rail and the rail. The center pier is turned to form a turn for the large transformer.

在采用上述技术方案的同时,本发明还可以采用或者组合采用如下技术方案:While adopting the above technical solutions, the present invention can also adopt or combine the following technical solutions:

作为本发明的一种优选技术方案:所述环形转盘包括转盘钢轨、钢轨垫板、地脚螺栓、主体混凝土块、钢板、插筋;As a preferred technical solution of the present invention: the annular turntable includes a turntable rail, a rail backing plate, an anchor bolt, a main concrete block, a steel plate, and a rib;

所述转盘钢轨焊接在钢轨垫板上,所述钢轨垫板经地脚螺栓固定至主体混凝土上,所述钢板经插筋固定至主体混凝土下表面;The turntable rail is welded on a rail backing plate, the rail backing plate is fixed to the main body concrete by anchor bolts, and the steel plate is fixed to the lower surface of the main body concrete by inserting ribs;

所述环形转盘下方沿着中心支墩设置多圈支撑球。A plurality of circles of support balls are arranged below the annular turntable along the central support pier.

作为本发明的一种优选技术方案:所述环形转盘的边缘上设有U型环,环形转盘上的U型环与移动式卷扬机上的牵引绳相连接以牵引环形转盘转动。As a preferred technical solution of the present invention, a U-shaped ring is arranged on the edge of the annular turntable, and the U-shaped ring on the annular turntable is connected with the traction rope on the mobile hoist to pull the annular turntable to rotate.

作为本发明的一种优选技术方案:环形转盘的外侧地基上设置两个U型环,两个U型环之间呈一定角度且角度满足大型变压器的转向角度,地基上的U型环经定位销与环形转盘上的U型环配套限位环形转盘。As a preferred technical solution of the present invention: two U-shaped rings are arranged on the outer foundation of the annular turntable, and the two U-shaped rings are at a certain angle and the angle meets the steering angle of the large transformer, and the U-shaped rings on the foundation are positioned The pin is matched with the U-ring on the annular turntable to limit the annular turntable.

作为本发明的一种优选技术方案:所述支撑球下方的混凝土内预埋环状凹钢圈,所述环状凹钢圈形成支撑球的旋转轨道;As a preferred technical solution of the present invention: an annular concave steel ring is pre-buried in the concrete below the support ball, and the annular concave steel ring forms a rotating orbit of the support ball;

所述钢板下表面设有与环状凹钢圈相对应的钢板凹槽,所述钢板凹槽与环状凹钢圈相配合以分别形成支撑球的旋转上轨道和旋转下轨道。The lower surface of the steel plate is provided with a steel plate groove corresponding to the annular concave steel ring, and the steel plate groove cooperates with the annular concave steel ring to respectively form a rotating upper track and a rotating lower track for supporting the ball.

作为本发明的一种优选技术方案:所述钢板凹槽对应支撑球的球心角度为a1,环状凹钢圈对应支撑球的球心角度a2>1.05a1;钢板厚度H≥2r[1-cos(a1/2)],其中r为支撑球的半径;变压器运输重量为M牛顿;支撑球可以是空心或实心,其可承受的压强PaAs a preferred technical solution of the present invention: the center angle of the steel plate groove corresponding to the support ball is a 1 , the annular concave steel ring corresponding to the center angle of the support ball a 2 >1.05a 1 ; the steel plate thickness H≥2r [1-cos(a 1 /2)], where r is the radius of the support sphere; the transport weight of the transformer is M Newtons; the support sphere can be hollow or solid, and the pressure it can withstand P a :

Figure BDA0003655140290000021
Figure BDA0003655140290000021

作为本发明的一种优选技术方案:所述转盘钢轨的一端焊接有阻进臂,所述转盘钢轨的另一端布置临时挡块,以限位载有大型变压器的小车;As a preferred technical solution of the present invention: one end of the turntable rail is welded with a blocking arm, and the other end of the turntable rail is arranged with a temporary stop to limit the trolley carrying the large transformer;

所述阻进臂位于大型变压器转向变化前小车的前端,且环形转盘转向后正好使得阻进臂位于小车的后端以方便小车进入下一条钢轨。The advance blocking arm is located at the front end of the trolley before the steering change of the large transformer, and after the annular turntable is turned, the advancing blocking arm is located at the rear end of the trolley to facilitate the trolley to enter the next rail.

作为本发明的一种优选技术方案:钢轨的中心距为L1;环形转盘上转盘钢轨的长度为L1,其对应的圆周角度为90°;环形转盘的内半径为

Figure BDA0003655140290000031
环形转盘的外半径R4=2R1。As a preferred technical solution of the present invention: the center distance of the rail is L 1 ; the length of the steel rail of the turntable on the annular turntable is L 1 , and its corresponding circumferential angle is 90°; the inner radius of the annular turntable is
Figure BDA0003655140290000031
The outer radius of the annular turntable is R 4 =2R 1 .

作为本发明的一种优选技术方案:环形转盘下方支撑球的半径为r=0.45R1As a preferred technical solution of the present invention: the radius of the support ball under the annular turntable is r=0.45R 1 ;

支撑球内圈轨道半径为R2=1.25R1,内圈共有16个支撑球;The track radius of the inner ring of the support ball is R 2 =1.25R 1 , and there are 16 support balls in the inner ring;

支撑球外圈轨道半径为R3=1.75R1,外圈共有22个支撑球。The track radius of the outer ring of the support ball is R 3 =1.75R 1 , and there are 22 support balls in the outer ring.

作为本发明的一种优选技术方案:所述过渡钢轨的长度L2的范围为0.1L1~0.12L1,其中,L1为钢轨的中心距;所述过渡钢轨用于调节过渡钢轨分别与钢轨、转盘钢轨之间具有2~3mm的间隙。As a preferred technical solution of the present invention, the length L 2 of the transition rail is in the range of 0.1L 1 to 0.12L 1 , wherein L 1 is the center distance of the rail; the transition rail is used to adjust the There is a gap of 2 to 3 mm between the rail and the turntable rail.

本发明还有一个目的在于,针对现有技术中存在的不足,提供一种大型变压器的转向方法。Another object of the present invention is to provide a steering method for a large transformer in view of the deficiencies in the prior art.

为此,本发明的上述目的通过如下技术方案实现:For this reason, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

一种大型变压器的转向方法,包括如下步骤:A steering method for a large transformer, comprising the following steps:

S1、将大型变压器放在小车上,将过渡钢轨布置在大型变压器当前所在钢轨与转盘钢轨之间;承载大型变压器的小车沿钢轨运输至环形转盘上的转盘钢轨上,小车的前侧滑轮顶住位于环形转盘上的阻进臂;S1. Put the large transformer on the trolley, and arrange the transition rail between the rail where the large transformer is currently located and the turntable rail; the trolley carrying the large transformer is transported along the rail to the turntable rail on the ring turntable, and the front pulley of the trolley bears against it. A stop arm located on the circular turntable;

S2、采用临时挡块顶住小车的后侧滑轮;S2. Use a temporary block to withstand the rear pulley of the trolley;

S3、拔出位于环形转盘的外侧地基上U型环与环形转盘的U型环之间的定位销,将移动式卷扬机的牵引绳套在环形转盘的U型环上;S3. Pull out the positioning pin located between the U-shaped ring on the outer foundation of the annular turntable and the U-shaped ring of the annular turntable, and put the traction rope of the mobile winch on the U-shaped ring of the annular turntable;

S4、启动移动式卷扬机,缓慢将环形转盘旋转90度,直到环形转盘的U型环与环形转盘的外侧地基上的另一个U型环对齐时停止,随后两个U型环插入定位稍,将环形转盘锁止固定;S4. Start the mobile winch, slowly rotate the annular turntable by 90 degrees, and stop when the U-ring of the annular turntable is aligned with another U-ring on the outer foundation of the annular turntable. Then the two U-rings are inserted into the positioning point, and the The ring turntable is locked and fixed;

S5、将过渡钢轨转移至另一条钢轨上,此时,环形转盘上的阻进臂正好位于小车的后端,拆除临时挡块,大型变压器即完成转向。S5. Transfer the transition rail to another rail. At this time, the blocking arm on the annular turntable is just at the rear end of the trolley. Remove the temporary block and the large transformer will complete the steering.

本发明提供一种大型变压器转向装置及方法,与现有技术相比,具有如下有益效果:The present invention provides a large transformer steering device and method, which have the following beneficial effects compared with the prior art:

1)、本发明所提供的转向装置能够实现300t级的大型变压器转向,转弯半径小;1), the steering device provided by the present invention can realize the steering of a large transformer of 300t level, and the turning radius is small;

2)、本发明所提供的转向方法转向过程简便,无需抬起变压器,依靠支撑球滚动摩擦实现转向,阻力小,所需卷扬机拉力小;2), the steering method provided by the present invention has a simple steering process, does not need to lift the transformer, and relies on the rolling friction of the support ball to realize the steering, the resistance is small, and the required hoist pulling force is small;

3)、本发明所提供的转向装置中支撑球的轨道固定,受力均匀,转向过程中每个支撑球承受变压器重力平稳,可靠性高。3) The track of the support ball in the steering device provided by the present invention is fixed, and the force is evenly applied. During the steering process, each support ball bears the gravity of the transformer smoothly and has high reliability.

附图说明Description of drawings

图1为本发明所提供的大型变压器转向装置处于初始状态时的平面布置图。FIG. 1 is a plan view of the large transformer steering device provided by the present invention in an initial state.

图2为本发明所提供的大型变压器转向装置处于卷扬机牵引时的平面布置图。FIG. 2 is a plan layout view of the large-scale transformer steering device provided by the present invention when it is being pulled by a hoist.

图3为本发明所提供的大型变压器转向装置处于转向完成后的平面布置图。FIG. 3 is a plan layout view of the large-scale transformer steering device provided by the present invention after the steering is completed.

图4为图1中A-A剖面图。FIG. 4 is an A-A sectional view in FIG. 1 .

图5为支撑球与钢板凹槽、环状凹钢圈的布置图示。Figure 5 is a diagram showing the arrangement of the support ball, the steel plate groove and the annular concave steel ring.

图6为小车在环形转盘上的固定图示。Figure 6 is a diagram showing the fixation of the trolley on the annular turntable.

具体实施方式Detailed ways

下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

一种大型变压器转向装置,包括钢轨1、环形转盘2、中心支墩3、过渡钢轨4、支撑球5、U型环6、定位销7、阻进臂8、临时挡块9。A large transformer steering device includes a rail 1, an annular turntable 2, a central buttress 3, a transition rail 4, a support ball 5, a U-shaped ring 6, a positioning pin 7, a blocking arm 8, and a temporary stop 9.

环形转盘2具有转盘钢轨2.1、钢轨垫板2.2、地脚螺栓2.3、主体混凝土块2.4、钢板2.5、插筋2.6、U型环2.7、环状凹钢圈2.8。转盘钢轨2.1焊接在钢轨垫板2.2上,钢轨垫板2.2通过地脚螺栓2.3固定在主体混凝土2.4上;钢板2.5通过插筋2.6固定在主体混凝土2.4下表面。环形转盘2下方设置两圈支撑球5;支撑球5下方混凝土内预埋环状凹钢圈2.8;环形转盘2上转盘钢轨2.1的一端焊接有阻进臂8。The annular turntable 2 has a turntable rail 2.1, a rail backing plate 2.2, an anchor bolt 2.3, a main concrete block 2.4, a steel plate 2.5, a rib 2.6, a U-shaped ring 2.7, and an annular concave steel ring 2.8. The turntable rail 2.1 is welded on the rail backing plate 2.2, and the rail backing plate 2.2 is fixed on the main concrete 2.4 through the anchor bolts 2.3; Two circles of support balls 5 are arranged below the annular turntable 2 ; an annular concave steel ring 2.8 is pre-buried in the concrete below the support balls 5 ;

钢轨1的中心距为L1=1.5m,环形转盘2上的转盘钢轨2.1的长度为L1,其对应的圆周角度为90°;环形转盘的内半径R1=1.06m;环形转盘的外半径R4=2.12m。钢板2.5具有两圈钢板凹槽,与预埋环状凹钢圈2.8的中心对齐,共同构成支撑球5的滑行轨道。支撑球5的半径r=0.477m;支撑球的内圈轨道半径为R2=1.325m,内圈共有16个支撑球;支撑球的外圈轨道半径为R3=1.855m,外圈共有22个支撑球。The center distance of the rail 1 is L 1 =1.5m, the length of the turntable rail 2.1 on the annular turntable 2 is L 1 , and its corresponding circumferential angle is 90°; the inner radius of the annular turntable R 1 =1.06m; Radius R 4 =2.12m. The steel plate 2.5 has two steel plate grooves, which are aligned with the center of the embedded annular concave steel ring 2.8, and together form a sliding track for supporting the ball 5. The radius of the support ball 5 is r=0.477m; the inner ring track radius of the support ball is R 2 =1.325m, and there are 16 support balls in the inner ring; the outer ring track radius of the support ball is R 3 =1.855m, and the outer ring has a total of 22 a support ball.

钢板凹槽对应支撑球的球心角度a1为30°,环状凹钢圈2.8对应支撑球的球心角度a2为32°;钢板2.5厚度H为4mm;大型变压器运输重量为3000kN;支撑球可以是空心或实心,其可承受压强Pa为2Mpa.The center angle a 1 of the steel plate groove corresponding to the support ball is 30°, the annular concave steel ring 2.8 corresponding to the center angle a 2 of the support ball is 32°; the thickness H of the steel plate 2.5 is 4mm; the transport weight of the large transformer is 3000kN; The ball can be hollow or solid, and its pressure Pa is 2Mpa.

过渡钢轨4放在钢轨1与环形转盘2上转盘钢轨2.1之间,其长度L2为0.16m,过渡钢轨4可移动以调节过渡钢轨4与钢轨1、转盘钢轨2.1之间具有2mm的间隙。The transition rail 4 is placed between the rail 1 and the turntable rail 2.1 on the annular turntable 2 , and its length L2 is 0.16m. The transition rail 4 can be moved to adjust the transition rail 4 and the rail 1 and the turntable rail 2.1 have a gap of 2mm.

环形转盘2外沿两条钢轨中心线上分别具有一个U型环,与环形转盘上U型环开孔朝向一致以方便转向前、后经定位销7锁止钢轨上的U型环与处于环形转盘上U型环。The ring-shaped turntable 2 has a U-shaped ring on the center line of the two rails, which is in the same direction as the opening of the U-shaped ring on the ring-shaped turntable to facilitate the front and rear of the turning. U-ring on the turntable.

一种大型变压器的转向方法,包括如下步骤:A steering method for a large transformer, comprising the following steps:

S1、将大型变压器放在小车上,将过渡钢轨布置在大型变压器当前所在钢轨与转盘钢轨之间;承载大型变压器的小车沿钢轨运输至环形转盘上的转盘钢轨上,小车的前侧滑轮顶住位于环形转盘上的阻进臂;S1. Put the large transformer on the trolley, and arrange the transition rail between the rail where the large transformer is currently located and the turntable rail; the trolley carrying the large transformer is transported along the rail to the turntable rail on the ring turntable, and the front pulley of the trolley bears against it. A stop arm located on the circular turntable;

S2、采用临时挡块顶住小车的后侧滑轮;S2. Use a temporary block to withstand the rear pulley of the trolley;

S3、拔出位于环形转盘的外侧地基上U型环与环形转盘的U型环之间的定位销,将移动式卷扬机的牵引绳套在环形转盘的U型环上;S3. Pull out the positioning pin located between the U-shaped ring on the outer foundation of the annular turntable and the U-shaped ring of the annular turntable, and put the traction rope of the mobile winch on the U-shaped ring of the annular turntable;

S4、启动移动式卷扬机,缓慢将环形转盘旋转90度,直到环形转盘的U型环与环形转盘的外侧地基上的另一个U型环对齐时停止,随后两个U型环插入定位稍,将环形转盘锁止固定;S4. Start the mobile winch, slowly rotate the annular turntable by 90 degrees, and stop when the U-ring of the annular turntable is aligned with another U-ring on the outer foundation of the annular turntable. Then the two U-rings are inserted into the positioning point, and the The ring turntable is locked and fixed;

S5、将过渡钢轨转移至另一条钢轨上,此时,环形转盘上的阻进臂正好位于小车的后端,拆除临时挡块,大型变压器即完成转向。S5. Transfer the transition rail to another rail. At this time, the blocking arm on the annular turntable is just at the rear end of the trolley. Remove the temporary block and the large transformer will complete the steering.

上述具体实施方式用来解释说明本发明,仅为本发明的优选实施例,而不是对本发明进行限制,在本发明的精神和权利要求的保护范围内,对本发明做出的任何修改、等同替换、改进等,都落入本发明的保护范围。The above-mentioned specific embodiments are used to explain the present invention, and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modification or equivalent replacement made to the present invention is within the spirit of the present invention and the protection scope of the claims. , improvements, etc., all fall within the protection scope of the present invention.

Claims (11)

1. A large-scale transformer turns to device which characterized in that: the large transformer steering device comprises two steel rails, the extending directions of the two steel rails are different, and annular turntables are arranged at the corners of the two steel rails;
the annular turntable is provided with a turntable steel rail, a transition steel rail is arranged between the turntable steel rail and the steel rail to form connection between the turntable steel rail and the steel rail, the center of the annular turntable is provided with a center buttress, and the annular turntable rotates along the center buttress at the center to form steering of the large transformer.
2. The large transformer steering device according to claim 1, wherein: the annular turntable comprises turntable steel rails, steel rail base plates, foundation bolts, main concrete blocks, steel plates and joint bars;
the turntable steel rail is welded on a steel rail base plate, the steel rail base plate is fixed on the main concrete through anchor bolts, and the steel plate is fixed on the lower surface of the main concrete through joint bars;
and a plurality of circles of supporting balls are arranged below the annular turntable along the central buttress.
3. Large transformer turning device according to claim 1 or 2, characterized in that: the edge of the annular turntable is provided with a U-shaped ring, and the U-shaped ring on the annular turntable is connected with a traction rope on the movable winch to pull the annular turntable to rotate.
4. The large transformer steering device according to claim 3, wherein: set up two U type rings on the outside ground of annular carousel, be certain angle and angle between two U type rings and satisfy large-scale transformer's steering angle, the U type ring on the ground is through the supporting spacing annular carousel of U type ring on locating pin and the annular carousel.
5. The large transformer steering device according to claim 2, wherein: an annular concave steel ring is pre-embedded in the concrete below the supporting ball, and the annular concave steel ring forms a rotating track of the supporting ball;
the lower surface of the steel plate is provided with a steel plate groove corresponding to the annular concave steel ring, and the steel plate groove is matched with the annular concave steel ring to form a rotary upper track and a rotary lower track of the supporting ball respectively.
6. The large transformer steering device according to claim 5, wherein: the steel plate groove corresponds to the sphere center angle of the supporting ball and is a 1 The angle a of the annular concave steel ring corresponding to the center of the supporting ball 2 >1.05a 1 (ii) a The thickness H of steel plate is greater than or equal to 2r 1-cos (a) 1 /2)]Wherein r is the radius of the support sphere; the transport weight of the transformer is M newtons; pressure P bearable by support ball a
Figure FDA0003655140280000021
7. The large transformer steering device according to claim 1, wherein: a feed stopping arm is welded at one end of the turntable steel rail, and a temporary stop block is arranged at the other end of the turntable steel rail to limit a trolley loaded with a large transformer;
the advance-stopping arm is positioned at the front end of the trolley before the steering change of the large transformer, and the advance-stopping arm is just positioned at the rear end of the trolley after the annular turntable is steered so as to facilitate the trolley to enter the next steel rail.
8. Large transformer turning device according to claim 1 or 2, characterized in that: the center distance of the steel rails is L 1 (ii) a The length of the turntable steel rail on the annular turntable is L 1 The corresponding circumferential angle is 90 degrees; the inner radius of the annular turntable is
Figure FDA0003655140280000022
Ring rotorOuter radius of the disc R 4 =2R 1
9. The large transformer steering device according to claim 8, wherein: the radius of the supporting ball under the annular turntable is 0.45R ═ R 1
The radius of the track of the inner ring of the supporting ball is R 2 =1.25R 1 The inner ring has 16 supporting balls;
the radius of the track of the outer ring of the supporting ball is R 3 =1.75R 1 And the outer ring has 22 supporting balls.
10. The large transformer steering device according to claim 1, wherein: length L of the transition rail 2 In the range of 0.1L 1 ~0.12L 1 Wherein L is 1 The center distance of the steel rails; the transition steel rail is used for adjusting gaps of 2-3 mm between the transition steel rail and the steel rail and between the transition steel rail and the turntable steel rail respectively.
11. A steering method of a large transformer is characterized in that: the steering method comprises the following steps:
s1, placing the large transformer on the trolley, and arranging the transition steel rail between the current steel rail of the large transformer and the turntable steel rail; a trolley for bearing the large transformer is transported to a turntable steel rail on the annular turntable along the steel rail, and a front side pulley of the trolley props against a stopping arm on the annular turntable;
s2, adopting a temporary stop block to prop against a rear pulley of the trolley;
s3, pulling out a positioning pin between the U-shaped ring on the foundation outside the annular turntable and the U-shaped ring of the annular turntable, and sleeving a traction rope of the mobile winch on the U-shaped ring of the annular turntable;
s4, starting the movable winch, slowly rotating the annular turntable by 90 degrees until the U-shaped ring of the annular turntable is aligned with the other U-shaped ring on the foundation outside the annular turntable, and then inserting the two U-shaped rings into the positioning pin to lock and fix the annular turntable;
and S5, transferring the transition steel rail to another steel rail, wherein the advance stopping arm on the annular turntable is just positioned at the rear end of the trolley, and the temporary stop block is removed, so that the large transformer can complete steering.
CN202210556600.0A 2022-05-20 2022-05-20 A large transformer steering device and method Pending CN114890109A (en)

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Publication number Priority date Publication date Assignee Title
DE8901360U1 (en) * 1988-04-13 1989-06-08 Miller, Franz Georg, 71229 Leonberg Device for converting a rotary movement into a longitudinal movement and vice versa
EP1026343A1 (en) * 1999-02-05 2000-08-09 Antivols Simplex S.A. Lock with a two part fixed lock body
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Application publication date: 20220812