Medium-low speed anti-loose magnetic suspension fastener system

Abstract

The utility model discloses a medium-low speed anti-loosening magnetic suspension fastener system which comprises an anchor bolt, a positioning nut and an iron base plate which are pre-buried in a concrete sleeper, and a height adjusting base plate, H-shaped steel, a distance adjusting pinch plate, a square gasket, a wedge-shaped anti-loosening gasket and a fastening nut are sequentially arranged above the iron base plate. The wedge-shaped lock washer is formed by combining two same washers. Compared with the prior art, the utility model has the positive effects that the anti-loosening structure of the wedge-shaped anti-loosening washer is utilized, the performance and the structural design of each part of the fastener system are integrated, the anti-loosening function of the fastener system is realized, the influence of nut loosening caused by vibration is resisted when the fastener system is in a complex service condition, and the service life of the fastener system is prolonged. And the effectiveness and the stability of the fastener system are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of low-speed anti-loose maglev fastener system. BACKGROUND

[0002] With the development of urban rail transit in China, the construction of maglev rail transit is gradually laid. Compared with traditional urban rail transit, maglev rail transit has the advantages of fast speed and comfortable riding experience. Maglev fasteners have generated fastener systems with different functional characteristics to adapt to different maglev rail lines.

[0003] The patent application with the authorized announcement number CN211734876U discloses an adjustable split type low-speed maglev fastener system. The fastener system includes an anchoring structure and a clamping structure. One end of the anchoring structure is used for anchoring connection with the rail support platform, and the other end of the anchoring structure is fixed with an upper iron pad. The clamping structure is used for connecting the sleeper and the upper iron pad. The upper iron pad is provided with a through groove along its length direction, and the anchoring structure is installed in the through groove. The anchoring structure can move along the through groove. The clamping structure includes a gauge block installed on the upper iron pad. The gauge block is provided with a boss. The boss is used for adapting to the notch on the sleeper. The clamping structure further includes an elastic structure. The anchoring structure and / or the clamping structure is provided with an adjustable pad. By adjusting the adjustable pad, the vertical adjustment of the track row is realized. By adjusting the installation position of the anchoring structure on the through groove, the longitudinal adjustment of the track row is realized. By replacing the gauge block with different boss positions, the transverse adjustment of the track row is realized.

[0004] The patent application with the authorized announcement number CN211734876U discloses an easy-to-maintain damping buckle plate type maglev fastener system to simplify the structure of the fastener system and improve the convenience of fastener adjustment, effectively improve the construction efficiency, and reduce the maintenance and repair cost. The fastener system includes T-shaped bolts and buckle plates arranged on both sides of the H-shaped sleeper rail waist. The buckle plate has a vertical downward extending front toe and a rear toe below the plate body, and a buckle plate long circular hole between the front toe and the rear toe. The iron pad plate surface is provided with a front toe hole and a rear toe hole corresponding to the front toe and the rear toe, and an iron pad long circular hole corresponding to the buckle plate long circular hole. The front toe and the rear toe are inserted into the front toe hole and the rear toe hole, respectively, and there is a gap between the lower end face and the iron pad bottom surface. The lower part of the T-shaped bolt is embedded and fixed in the rail support platform concrete, and the upper part passes through the iron pad long circular hole and the buckle plate long circular hole. The fastening bolt assembly installed at the upper end acts on the plate body of the buckle plate, and provides clamping pressure on the rail bottom of the H-shaped sleeper from the front end of the plate body.

[0005] In the low-speed maglev line, the fastener system is fixed and connected with the rail by bolt + nut mode. In the service process, the threaded connection mode will produce loosening with the increase of service time and the change of site environmental conditions, which increases the workload of daily maintenance and causes the failure risk of the fastener system. Therefore, the threaded connection structure is optimized on the basis of the existing maglev fastener to prevent the nut from loosening in the service process and ensure the stability of the fastener system in the service process. Utility model content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a low-speed anti-loosening maglev fastener system.

[0007] The utility model solves technical scheme that the utility model adopts: a low-speed anti-loosening maglev fastener system, including anchor bolt, locating nut and iron backing plate embedded in concrete sleeper, height adjusting backing plate, H-shaped steel, distance adjusting backing plate, square washer, wedge-shaped anti-loosening washer and fastening nut are sequentially arranged above the iron backing plate, the wedge-shaped anti-loosening washer is combined by two identical washers.

[0008] Compared with the prior art, the positive effect of the utility model is:

[0009] The utility model utilizes the anti-loosening structure of the wedge-shaped anti-loosening washer, integrates the performance and structural design of each component of the fastener system, realizes the anti-loosening function of the fastener system, ensures that the fastener system resists the loosening influence of the nut caused by vibration under the complex conditions in the service, guarantees the effectiveness and stability of the fastener system. Specific advantages are as follows:

[0010] (1) the fastener system of the utility model has excellent anti-loosening performance

[0011] The utility model utilizes the self-locking relationship between the tooth shape rise angle of the wedge-shaped anti-loosening washer and the thread rise angle, realizes the anti-loosening of the nut, reduces the failure risk of the fastener system in the service process by using the wedge-shaped anti-loosening washer and the rigid cooperation between each component.

[0012] (2) the fastener system of the utility model has flexible adjustment amount

[0013] The utility model realizes the height adjustment and the height reduction of the fastener system by adjusting the height adjusting backing plate model configuration and the distance adjusting backing plate model configuration, satisfies the line site use requirement. ACCURACY OF DRAWINGS

[0014] The utility model will be explained by example and with reference to the mode of the accompanying drawings, wherein:

[0015] Figure 1 It is the assembly schematic view of the fastener system of the utility model;

[0016] Figure 2 is an exploded view of the fastener system of the utility model;

[0017] Figure 3 is a schematic view of an anchor bolt;

[0018] Figure 4 is a schematic view of a positioning nut;

[0019] Figure 5 is a schematic view of an iron backing plate, wherein: (1) is an upper surface; (2) is a lower surface;

[0020] Figure 6 is a schematic view of an adjustable height backing plate;

[0021] Figure 7 is a schematic view of an H-shaped steel;

[0022] Figure 8 is a schematic view of an adjustable distance clamping plate, wherein: (1) is an upper surface; (2) is a lower surface;

[0023] Figure 9 is a schematic view of a square washer;

[0024] Figure 10 is a schematic view of a wedge-shaped lock washer, wherein: (1) is a combination surface; (2) is a working surface;

[0025] Figure 11 is a schematic view of a wedge-shaped lock washer combination;

[0026] Figure 12 is a schematic view of a fastening nut;

[0027] Figure 13 is a schematic view of an anchor bolt, a positioning nut and an iron backing plate installation;

[0028] Figure 14 is a schematic view of an adjustable height backing plate installation process;

[0029] Figure 15 is a schematic view of an adjustable height backing plate installation completion;

[0030] Figure 16 is a schematic view of an H-shaped steel installation;

[0031] Figure 17 is a schematic view of an adjustable distance clamping plate installation;

[0032] Figure 18 is a schematic view of a square washer installation;

[0033] Figure 19 is a schematic view of a wedge-shaped lock washer installation;

[0034] Figure 20 is a schematic view of a fastening nut installation. DETAILED DESCRIPTION

[0035] A low-speed anti-loose magnetic levitation fastener system, as shown in Figure 1 and Figure 2 , comprises a concrete sleeper 1, an anchor bolt 2, a positioning nut 3, an iron pad 4, an adjustable height pad 5, an H-shaped steel 6 (i.e. a track), an adjustable distance fastener plate 7, a square washer 8, a wedge-shaped anti-loose washer 9, and a fastening nut 10, etc., wherein:

[0036] The structure of the anchor bolt 2 is shown in Figure 3 , which comprises a bolt head 2.1 and a thread 2.2. The bolt head can be designed as a square head, or a round head or other shapes, wherein the square head design helps to improve the pullout resistance of the anchor bolt in the concrete sleeper, and the thread 2.2 is used to fasten the fastener system and the H-shaped steel.

[0037] The structure of the positioning nut 3 is shown in Figure 4 . The positioning nut 3 is used in cooperation with the anchor bolt 2 and is installed below the iron pad 4 for positioning the iron pad.

[0038] The structure of the iron pad 4 is shown in Figure 5 , which comprises two circular through holes 4.1 for bolt installation and three transverse reinforcing ribs 4.2 arranged on the lower surface. The iron pad 4 is a cast iron piece. The iron pad is provided with bolt installation circular through hole general features for installation through the bolt. The number and shape of the transverse reinforcing ribs can be increased or decreased according to actual conditions. The function of the transverse reinforcing ribs is to enhance the transverse force resistance of the iron pad 4 when the iron pad 4 is pre-embedded in the concrete sleeper. After the sleeper is poured, the iron pad 4 needs to be embedded in the sleeper by 1mm-2mm.

[0039] The structure of the adjustable height pad 5 is shown in Figure 6 , which comprises a bolt installation hole 5.1 and a bolt quick installation hole 5.2. The adjustable height pad 5 is used for adjusting the height of the H-shaped steel. When the fastener system is normally installed, a certain thickness of the adjustable height pad is installed, and when height adjustment and lowering operation is needed, the thickness and number of the adjustable height pad are adjusted and reconfigured.

[0040] The structure of the H-shaped steel 6 is shown in Figure 7 . The H-shaped steel is selected according to the structure of the magnetic levitation track. When the fastener is installed, the square hole matching the adjustable distance fastener plate is processed at the corresponding position of the H-shaped steel, so that the fastener system can be normally installed.

[0041] The structure of the adjustable distance fastener plate 7 is shown in Figure 8As shown, including: bolt installation long circular hole 6.1, square washer limiting boss 6.2 and distance buckle limiting boss 6.3; distance buckle 7 for the transverse and longitudinal adjustment of the track row. The outer wall surface of the distance buckle limiting boss 6.3 cooperates with the square hole of the H-shaped steel, and the square washer limiting boss 6.2 is used for the installation of the square washer 8. When transverse and longitudinal adjustment is needed, the direction of the distance buckle can be rotated and different types of distance buckle can be replaced to achieve the adjustment.

[0042] The structure of the square washer 8 is as shown in Figure 9 The square washer 8 is installed between the distance buckle 7 and the wedge-shaped lock washer 9.

[0043] The wedge-shaped lock washer 9 realizes the anti-loose function by the wedge-shaped teeth on the surface. Each wedge-shaped lock washer is composed of two identical washers. The tooth features on the upper and lower surfaces of the washer are as shown in Figure 10 The tooth features on the upper and lower surfaces of the washer are as shown in Figure 11 The tooth features on the upper and lower surfaces of the washer are as shown in

[0044] The structure of the fastening nut 10 is as shown in Figure 12 The fastening nut 10 is used in cooperation with the anchor bolt 2 for the fastening and fixing of the entire fastener system.

[0045] Installation instructions:

[0046] (1) During installation, first install the anchor bolt 2, the positioning nut 3 and the iron pad 4.

[0047] First, screw the positioning thin nut 3 into the anchor bolt 2 at the appropriate position, and then pass the circular hole 4.1 on the iron pad through the anchor bolt. After installation, as shown in Figure 13

[0048] (2) Install the height adjustment pad 5. Insert the bolt installation hole 5.1 feature of the height adjustment pad at any angle into the anchor bolt, and then rotate the height adjustment pad to insert the bolt quick installation hole 5.2 feature into the other anchor bolt. As shown in Figure 14 After installation, as shown in Figure 15

[0049] (3) Install the H-shaped steel 6. After drilling holes on the H-shaped steel, align the hole center of the H-shaped steel with the anchor bolt, and press the H-shaped steel to install it on the fastener system. As shown in Figure 16

[0050] (4) Install the distance buckle 7. Insert the distance buckle into the anchor bolt and the H-shaped steel as shown in Figure 17 During installation, attention should be paid to the direction of the long hole of the distance buckle.​​​

[0051] (5) Install the square washer 8. Insert the square washer into the anchor bolt, ensuring it retracts into the square washer limiting boss 6.2 of the adjusting plate. For example... Figure 18 As shown.

[0052] (6) Install the wedge-shaped anti-loosening washer 9. Insert the finished wedge-shaped anti-loosening washer into the anchor bolt. For example... Figure 19 As shown.

[0053] (7) Install the fastening nut 10. Place the fastening nut as follows: Figure 20 Insert the fastener into the anchor bolts as shown and tighten them to complete the installation of the fastener system.

Claims

1. A low to medium speed anti-loose maglev fastening system, characterized in that: The anchor bolt, the positioning nut and the iron base plate are embedded in the concrete sleeper, the height adjusting base plate, the H-shaped steel, the distance adjusting clamping plate, the square washer, the wedge-shaped anti-loosening washer and the fastening nut are sequentially arranged above the iron base plate, and the wedge-shaped anti-loosening washer is combined by two same washers.

2. A low-medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The lower surface of the iron base plate is provided with a reinforcing rib.

3. A low-medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The bolt mounting type hole and the bolt quick mounting type hole are arranged on the height adjusting base plate.

4. A low to medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The long circular through hole for mounting the anchor bolt is arranged in the center of the distance adjusting clamping plate, the square washer limiting boss is arranged on the upper surface of the distance adjusting clamping plate, the distance adjusting clamping plate limiting boss is arranged on the lower surface of the distance adjusting clamping plate, and the outer wall surface of the distance adjusting clamping plate limiting boss is matched with the square hole arranged on the H-shaped steel.

5. A low to medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The upper and lower surfaces of the two washers are respectively combined tooth shape and working tooth shape, and the combined tooth shape of the two washers is combined into the wedge-shaped anti-loosening washer.

6. A low to medium speed anti-loose maglev fastener system according to claim 5, characterized in that: The adhesive is coated on the combined surface of the two washers.

7. A low to medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The bolt of the anchor bolt is a square bolt head.

8. A low to medium speed anti-loose maglev fastener system according to claim 1, characterized in that: The embedding depth of the iron base plate in the concrete sleeper is 1mm-2mm.

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