WO2022241936A1 - Seamless track railway structure for normal conductive short stator magnetic levitation system - Google Patents

Abstract

A seamless track railway structure for a normal conductive short stator magnetic levitation system, which comprises running rails (2) and suspension rails (5); the running rails (2) are fixedly connected to top surfaces of railway ties (3), the suspension rails (5) are slidably connected to bottom surfaces of the railway ties (3), the suspension rails (5) are able to slide in a direction of mileage of a track, and the suspension rails (5) are a seamless structure. A seamless track railway system splits a traditional low speed magnetic levitation F rail structure into running rails (2) and suspension rails (5), which are respectively mounted to upper and lower surfaces of railway ties (3), a load of a train being borne and a driving function being provided for the train by means of the running rails (2), and suspension, guidance, and braking functions being provided for the train by means of the suspension rails (5). Also, the suspension rails (5) can slide in a direction of mileage of a track, and can be adapted for an expansion and contraction deformation requirement as necessary for temperature changes; further, the suspension rails (5) being able to be designed as a seamless structure eliminates the problem of discontinuity of a collision and suspension detection surface of a seamed track at a rail seam, operating stability and comfort of a train can be improved, and same can be adapted for higher speed levels.

Description

The track structure of the seamless line of the maglev system with a constant guide short stator technical field

The invention relates to the technical field of maglev transportation systems, in particular to a seamless line track structure of a constant conduction short stator maglev system.

Background technique

Medium and low-speed maglev rail transit generally adopts a maglev system with a constant guide short stator to support the operation of the vehicle, carry the load of the train, and cooperate with the vehicle to provide suspension, guidance, driving, braking and other functions. The cross section of the rail is designed to be F-shaped, and the rail row is formed by fixedly connecting the high-strength bolts and the steel sleepers, and then the rail row is fixed on the rail platform and the concrete beam through the fastener system, and several rail rows run on the train through the F-rail joint. The directions are connected longitudinally into track lines.

The normal guide short stator maglev track takes the rail row as the unit, and expansion joints need to be set between adjacent rail rows to adapt to the expansion and contraction deformation caused by the temperature of the rail row and the lower foundation. When the maglev train passes through the expansion joint, the gap sensor is prone to failure of the test point, and the support wheel is prone to fall and collision during operation, which will affect the stability of the train operation and passenger comfort. For this reason, various rail expansion joints have appeared at home and abroad, such as Type I, II, III, and IV expansion joints. The rail expansion joints are difficult to process, high in cost, and low in installation efficiency. waste.

Expansion joints and various types of expansion joints have greatly affected the integrity, stability and reliability of the constant guide short stator maglev track, resulting in most of its existing speed grades being 100km/h, with a maximum speed of no more than 160km/h .

Contents of the invention

The purpose of the present invention is to provide a constant-conduction-short Stator maglev system seamless line track structure.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A seamless circuit track structure of a normal-conducting short stator maglev system, comprising a running rail and a suspension rail, the running rail is fixedly connected to the top surface of the sleeper, the suspension rail is slidingly connected to the bottom surface of the sleeper, and the suspension rail can Sliding along the mileage direction of the line, the suspension rail has a seamless structure.

The seamless line track system of the present invention splits the traditional medium-low speed maglev F-rail structure into running rails and suspension rails, which are respectively installed on the upper and lower surfaces of sleepers, and the running rails carry the train load to provide driving functions for the train. Provide suspension, guidance and braking functions for the train through the suspension rail. And the suspension rail can slide along the mileage direction of the line, which can adapt to the expansion and deformation requirements required by temperature changes, and the suspension rail can be designed as a seamless structure, which eliminates the collision of the seamed line at the rail seam and the discontinuity of the suspension detection surface It can improve the stability and comfort of train operation, and can adapt to higher speed grades.

As a preferred solution of the present invention, the suspension rail is provided with a first chute, the first chute is arranged along the mileage direction of the line, the bottom surface of the sleeper is fixedly connected with a first slider, and the first slider Slidably connected with the first chute. Through this structure, the suspension rail can slide along the mileage direction of the line. The suspended rail and the first slider adopt a form of embedded structure. When installing, you only need to slide the first slider to the corresponding position to be positioned and installed with the sleeper, which greatly improves the manufacturing accuracy and flexibility of the track structure.

As a preferred solution of the present invention, the first slider has an enlarged head structure, and the shape of the first sliding groove is adapted to the first slider. Through the design of the enlarged head structure, the problem of falling off of the suspended rail and sleeper can be effectively prevented.

As a preferred solution of the present invention, a chute block is fixedly installed on the bottom surface of the sleeper, and the chute block is provided with a second chute along the mileage direction of the line, and the suspension rail can slide in the second chute . Through this structure, the suspension rail can slide along the mileage direction of the line. The suspension rail and the second chute adopt the embedded structure, and only need to slide the suspension rail to the corresponding position during installation, which greatly improves the manufacturing accuracy and flexibility of the rail structure.

As a preferred solution of the present invention, the second chute is a concave chute, and the suspension rail is a π-shaped structure. Through the design of concave chute and π-shaped suspension rail, the problem of suspension rail and sleeper falling off can be effectively prevented.

As a preferred solution of the present invention, the cross-sectional shape of the sleeper is rectangular, I-shaped or sub-shaped. The sleeper adopts a structure with a uniform cross-section, and there is no need for traditional medium and low-speed maglev H-shaped steel sleepers to be beveled at both ends. The requirements for the processing accuracy of the mounting surface are low, and the processing and manufacturing are more convenient.

As a preferred solution of the present invention, the sleeper is installed on the rail platform through a fastener system, the fastener system includes vertically arranged anchor bolts, and the sleeper and the rail platform are connected by the anchor bolts, The anchor bolts are sheathed with shrapnel, and both ends of the shrapnel compress the sleeper.

The present invention improves the traditional fastener system. By setting vertical anchor bolts, the installation of each component of the fastener system is facilitated. Through the shrapnel installed on the anchor bolts, the sleeper can be directly buckled vertically, so that the sleeper and The rail platform is fastened and connected, and the fastener system of the present invention is convenient for installation and adjustment.

As a preferred solution of the present invention, the bottom surface of the sleeper is provided with a square hole, and the fastener system includes a gauge block, and the gauge block is provided with an eccentric bolt hole. Through the design of square and round holes and eccentric bolt holes, it is convenient to carry out horizontal adjustment, and the installation and adjustment are convenient and fast. The horizontal direction is perpendicular to the direction of the line mileage.

As a preferred solution of the present invention, the fastener system also includes a positioning nut, an iron backing plate, an elastic backing plate, a height-adjusting backing plate and a fastening nut, and the positioning nut, the iron backing plate, the elastic backing plate, and the height-adjusting pad Plates, gauge blocks, shrapnel and fastening nuts are sequentially installed on the anchor bolts from bottom to top.

The invention also discloses a method for installing a seamless line track structure of a normally-guided short-stator maglev system, which includes the following steps:

Step 1: Install the induction plate on the running rail, and fix it with several sleepers to form a rail row;

Step 2: slidingly connecting the suspension rail to the bottom surface of the sleeper;

Step 3: fixing the fastener system on the bottom of the sleeper;

Step 4: Place the assembled rail row on the top of the rail girder, install the formwork of the rail platform, and pour the rail platform;

Step 5: After the fine adjustment of the track is completed, a locknut is screwed in above the fastener system, and the suspension rails are sequentially welded to form a seamless line.

According to the installation method of the present invention, the sleeper is fixed on the rail platform on the top of the rail beam through the fastener system, and the precise positioning of the track in all directions can be accurately positioned through the post-cast rail platform, which can reduce the cost of construction due to off-line construction. The influence of accuracy caused by foundation construction errors can be easily adjusted horizontally and vertically through the fastener system, which is convenient for construction and installation, and can better adapt to the deformation of the offline foundation.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

1. The seamless track system of the present invention splits the traditional medium-low speed maglev F-rail structure into running rails and suspension rails, which are respectively installed on the upper and lower surfaces of sleepers, and the running rails carry the load of the train to provide driving for the train. The function provides suspension, guidance and braking functions for the train through the suspension rail. And the suspension rail can slide along the mileage direction of the line, which can adapt to the expansion and deformation requirements required by temperature changes, and the suspension rail can be designed as a seamless structure, which eliminates the collision of the seamed line at the rail seam and the discontinuity of the suspension detection surface It can improve the stability and comfort of train operation, and can adapt to higher speed grades.

2. According to the installation method of the present invention, the sleeper is fixed on the rail platform on the top of the rail beam through the fastener system, and the precise positioning of the track in all directions can be accurately positioned through the post-cast rail platform, which can reduce the line The influence of the accuracy caused by the construction error of the lower civil foundation can be easily adjusted horizontally and vertically through the fastener system, which is convenient for construction and installation, and can better adapt to the deformation of the underground foundation.

3. The suspended rail and the first slider of the present invention adopt an embedded structure. When installing, only the first slider needs to be slid to the corresponding position to be positioned and installed with the sleeper, which greatly improves the manufacturing accuracy and flexibility of the rail structure. The suspension rail and the second chute adopt an embedded structure, and only need to slide the suspension rail to the corresponding position during installation, which greatly improves the manufacturing accuracy and flexibility of the rail structure.

4. The sleeper of the present invention adopts a structure with a uniform cross-section, and there is no need for oblique cutting of the traditional medium and low-speed maglev H-shaped steel sleeper at both ends. The processing accuracy of the mounting surface is low, and the processing and manufacturing are more convenient.

5. The present invention improves the traditional fastener system. By setting vertical anchor bolts, the installation of various parts of the fastener system is facilitated. Through the shrapnel installed on the anchor bolts, the sleeper can be directly buckled vertically, so that The sleeper and the rail platform are fastened and connected, and the fastener system of the present invention is designed with square and round holes and eccentric bolt holes to facilitate lateral adjustment, and the installation and adjustment are convenient and quick.

Description of drawings

Fig. 1 is a schematic structural view of the track structure of the seamless track of the constant conduction short stator maglev system described in Embodiment 1 of the present invention.

Fig. 2 is a front view of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

Fig. 4 is a schematic structural diagram of the suspended rail according to Embodiment 1 of the present invention.

Fig. 5 is a first structural schematic diagram of the first slider according to Embodiment 1 of the present invention.

Fig. 6 is a second structural schematic diagram of the first slider according to Embodiment 1 of the present invention.

Fig. 7 is a first schematic diagram of the installation of the sleeper, the first slider and the suspension rail according to the first embodiment of the present invention.

Fig. 8 is a second schematic diagram of the installation of the sleeper, the first slider and the suspension rail according to the first embodiment of the present invention.

Fig. 9 is a first structural schematic diagram of the sleeper according to Embodiment 1 of the present invention.

Fig. 10 is a second structural schematic diagram of the sleeper described in Embodiment 1 of the present invention.

Fig. 11 is a schematic structural view of the chute block according to Embodiment 2 of the present invention.

Fig. 12 is a schematic structural diagram of the suspended rail according to Embodiment 2 of the present invention.

Fig. 13 is a schematic structural view of the track structure of the seamless track of the constant conduction short stator maglev system described in Embodiment 3 of the present invention.

Fig. 14 is a cross-sectional view of the track structure of the seamless track of the constant conduction short stator maglev system described in Embodiment 3 of the present invention.

Fig. 15 is a schematic structural view of the fastener system according to Embodiment 3 of the present invention.

Fig. 16 is a schematic diagram of the installation of the fastener system according to Embodiment 3 of the present invention.

Fig. 17 is a schematic structural view of the gauge block according to Embodiment 3 of the present invention.

Fig. 18 is a schematic structural view of the shrapnel according to Embodiment 3 of the present invention.

Fig. 19 is a schematic diagram of a sleeper with an I-shaped section according to Embodiment 3 of the present invention.

Fig. 20 is a schematic diagram of a sleeper with a sub-shaped cross-section according to Embodiment 3 of the present invention.

Icons: 1-induction plate, 2-running rail, 3-sleeper, 31-sunk head bolt, 32-slider installation hole, 33-fastener system installation hole, 34-bottom bolt hole, 35-square hole, 36- Top bolt hole, 4-first slider, 41-inverted T-bolt, 42-adjusting backing plate, 43-fastening nut, 44-lock nut, 5-suspension rail, 51-first chute, 6- Fastener system, 61-anchor bolt, 62-locating nut, 63-iron backing plate, 64-elastic backing plate, 65-height adjustment backing plate, 66-gauge block, 67-shrapnel, 68-eccentric bolt hole, 7 -rail platform, 8-rail beam, 9-chute block, 91-the second chute.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in detail.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example 1

As shown in Fig. 1-Fig. 3, a seamless line track structure of a constant guide short stator maglev system, including an induction plate 1, a running rail 2, a sleeper 3, a first slider 4 and a suspension rail arranged from top to bottom 5.

The top of both ends of the rectangular steel sleeper 3 is fixedly installed with the running rail 2, and the upper surface of the running rail 2 is bonded with sealant and fastened with screws on the top surface to install the induction plate 1. Rectangular steel sleeper 3 two ends bottoms are installed by the first slide block 4 interlockingly and arrange some suspension rails 5 along the line longitudinal direction (the line longitudinal direction is the line mileage direction), and the suspension rails 5 can slide longitudinally along the line. The suspension rails 5 are sequentially welded along the longitudinal direction of the line to form a seamless line.

As shown in Figure 4, the upper part of the suspension rail 5 is provided with a first chute 5 along the longitudinal length of the line. . As shown in Figures 5-6, the upper part of the first slider 4 is a flat plate, and the lower part is a convex slider (enlarging head). In the vertical direction, the cross-sectional size of the lower part of the first slider 4 gradually increases. The first sliding block 4 is compatible with the first chute 5 , and the first sliding block 4 can slide in the first chute 5 .

As shown in FIGS. 7-8 , a bolt through hole is provided in the middle of the first slider 4 , and a square countersunk groove is provided at the bottom of the lower slider for installing inverted T-shaped bolts 41 . The first slider 4 is bolted to the bottom of the rectangular steel sleeper 3 through inverted T-shaped bolts 41, and the fastening nut 43 is installed through the slider mounting hole 32 at the waist of the rectangular steel sleeper 3 or the side, and the first slider 4 is connected to the rectangular steel rail. An adjustment backing plate 42 is arranged between the bottoms of the pillows 3 . Further, a lock nut 44 may also be provided above the fastening nut 43 .

As shown in Figures 9-10, the cross-section of the sleeper 3 is rectangular, and the top bolt holes 36 are set at the corresponding positions of the top running rails 2 at both ends of the rectangular steel sleeper 3, and the bottom bolt holes 34 are set at the corresponding positions of the bottom suspension rails 5 at both ends, and the bottom support rails A rectangular square hole 35 is provided at the corresponding position of the table 7, a slider mounting hole 32 is provided at the waist of the suspension rail 5 at the corresponding position, and a fastener system mounting hole 33 is provided at the waist of the fastener system at the corresponding position. The sleeper 3 is fixedly connected with the running rail 2 through a countersunk bolt 31 .

Example 2

The difference between this embodiment and Embodiment 1 is that the cross-sectional forms of the sleeper 3 and the suspension rail 5 used in this embodiment are different. Specifically, as shown in Figures 11-12, the bottom surface of the sleeper 3 is fixedly installed with sliding Slot block 9, the bottom of chute block 9 is provided with a second chute 91, the second chute 91 is a concave chute, and the second chute 91 is longitudinally arranged along the line. The suspension rail 5 is a π-shaped structure. The upper part of the suspension rail 5 is a flat slider structure, which can be embedded in the second chute 91 and can slide longitudinally along the line in the second chute 91. The lower part of the suspension rail 5 is Maglev surface.

Example 3

On the basis of embodiment 1 or embodiment 2, this embodiment improves the traditional fastener system, specifically, as shown in Figure 13-Figure 16:

A seamless line track structure of a constant guide short stator maglev system. The sleeper 3 is installed on the rail support platform 7 through the fastener system 6. The fastener system 6 connects the positioning nut 62 and the iron backing plate through the anchor bolt 61 from bottom to top. 63, elastic backing plate 64, height-adjusting backing plate 65, gauge block 66, shrapnel 67, fastening nut 43 are connected in series with rectangular steel sleeper 3 and are fixedly connected. Wherein, the positioning nut 62 supports the upper part of the fastener system 6 and completes the positioning function. When the fastener system 6 is installed, the anchor bolt 61 is screwed into the positioning nut 62 earlier, and the iron backing plate 63, the elastic backing plate 64, and the heightening backing plate 65 are put into successively, and then the positioning nut 62 is adjusted so that the above-mentioned parts reach the designated position. Put the anchor bolt 61 through the rectangular square and round hole 35 at the bottom of the rectangular steel sleeper 3, then put it into a suitable gauge block 66 according to the horizontal adjustment requirements, put in the shrapnel 67, screw in the fastening nut 43, and fix the fastener system 6 on the rectangular rail. Steel sleeper 6, installation preliminary installation. As shown in FIG. 17 , the gauge block 66 is a cuboid with an eccentric bolt hole 68 arranged in the middle. As shown in Figure 18, the shrapnel 67 has an inverted "concave" shape structure, with bolt holes in the middle, and the curved structures on both sides contact with the inside of the rectangular steel sleeper 3 to complete the crimping.

As shown in Figures 19-20, as an alternative, the section of the sleeper 3 can also be designed as an I-shape or a sub-shape.

Example 4

A method for installing a seamless line track structure of a normally-conducting short-stator maglev system, comprising the following steps:

Step 1: Install the induction plate 1 on the running rail 2, and fix it with a number of sleepers 3 to form a rail row;

Step 2: Slidingly connect the suspension rail 5 to the bottom surface of the sleeper 3, and fixedly connect the first slider 4 or the chute block 9 to the sleeper 3;

Step 3: Fix the fastener system 6 on the bottom of the sleeper 3;

Step 4: Place the assembled rail row on the top of the rail bearing beam 8, and install the formwork of the rail bearing platform 7 through the support of the corresponding tooling, complete the binding of steel bars, and perform the pouring of the rail bearing platform 7;

Step 5: After the fine adjustment of the track is completed, screw the lock nut 44 above the fastening nut 43, weld the suspension rail 5 in turn to form a seamless line, and complete the installation process of the track structure of the seamless line.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

A seamless line track structure of a constant guide short stator maglev system, characterized in that it includes a running rail (2) and a suspension rail (5), the running rail (2) is fixedly connected to the top surface of the sleeper (3), The suspension rail (5) is slidably connected to the bottom surface of the sleeper (3), the suspension rail (5) can slide along the mileage direction of the line, and the suspension rail (5) is a seamless structure. According to claim 1, the seamless line track structure of the constant guide short stator maglev system is characterized in that, the suspension rail (5) is provided with a first chute (51), and the first chute (51) Arranged along the mileage direction of the line, a first slider (4) is fixedly connected to the bottom surface of the sleeper (3), and the first slider (4) is slidably connected to the first slide groove (51). According to claim 2, the seamless line track structure of the constant lead short stator maglev system is characterized in that, the first slider (4) is an enlarged head structure, and the shape of the first chute (51) is the same as The first slider (4) is suitable. According to claim 1, the seamless line track structure of the constant guide short stator maglev system is characterized in that a chute block (9) is fixedly installed on the bottom surface of the sleeper (3), and the chute block (9) A second chute (91) is provided along the mileage direction of the line, and the suspension rail (5) can slide in the second chute (91). According to claim 4, the seamless line track structure of the constant conduction short stator maglev system is characterized in that, the second chute (91) is a concave chute, and the suspension rail (5) is a π-shaped structure . According to claim 1, the seamless line track structure of the constant conduction short stator maglev system is characterized in that the cross-sectional shape of the sleeper (3) is rectangular, I-shaped or sub-shaped. According to any one of claims 1-6, the seamless line track structure of the constant guide short stator maglev system is characterized in that the sleeper (3) is installed on the rail platform (7) through a fastener system (6) , the fastener system (6) includes vertically arranged anchor bolts (61), the sleeper (3) and the rail platform (7) are connected through the anchor bolts (61), and the anchor bolts ( 6) The upper sleeve is provided with shrapnel (67), and both ends of the shrapnel (67) press the sleeper (3). According to claim 7, the seamless line track structure of the constant guide short stator maglev system is characterized in that, the bottom surface of the sleeper (3) is provided with a square hole (35), and the fastener system (6) includes a rail A distance block (66), the gauge block (66) is provided with an eccentric bolt hole (68). According to claim 7, the seamless line track structure of the constant guide short stator maglev system is characterized in that the fastener system (6) also includes a positioning nut (62), an iron backing plate (63), and an elastic backing plate (64), height-adjusting backing plate (65) and fastening nut (43), described positioning nut (62), iron backing plate (63), elastic backing plate (64), height-adjusting backing plate (65), rail The distance block (66), the shrapnel (67) and the fastening nut (43) are sequentially installed on the anchor bolt (61) from bottom to top. A method for installing a seamless line track structure of a normally-guided short-stator maglev system, characterized in that it includes the following steps: Step 1: Install the induction plate (1) on the running rail (2), and fix it with several sleepers (3) to form a rail row; Step 2: slidingly connecting the suspension rail (5) to the bottom surface of the sleeper (3); Step 3: fixing the fastener system (6) on the bottom of the sleeper (3); Step 4: Place the assembled rail row on the top of the rail girder (8), install the formwork of the rail platform (7), and pour the rail platform (7); Step 5: After the fine adjustment of the track is completed, a lock nut (44) is screwed in above the fastener system (6), and the suspension rail (5) is sequentially welded to form a seamless line.

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