Vertical skid device of medium-low speed maglev train

Abstract

The utility model discloses a vertical skid device of a medium-low speed maglev train, which belongs to the technical field of maglev trains, and comprises a mounting support and a mounting hole formed in the mounting support, a fixed seat is mounted at the bottom end of the mounting support, and the bottom end of the fixed seat is provided with a sliding block. A mounting groove is formed in the bottom of the fixing seat, a friction block with the bottom protruding out of the fixing seat is mounted on the inner side of the mounting groove, and in the friction process, the maglev train is in a sliding state, so that airflow makes contact with the friction block through an air channel formed in the heat dissipation plate, and part of heat on the friction block can be effectively taken away; and the friction block is in direct contact with the heat dissipation plate, heat can be conducted to the heat dissipation plate, meanwhile, the heat exchange area is increased through the fins, the overall heat of the friction block can be effectively reduced, the friction force between the friction block and the rail is improved, and the sensitivity of horizontal adjustment of the maglev train is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation train technology, and more specifically, to a vertical skid device for a medium- and low-speed magnetic levitation train. Background Technology

[0002] Currently, the more mature maglev trains include medium- and low-speed maglev trains and high-speed maglev trains. They have three basic functions: levitation, guidance, and traction. Suspension refers to achieving non-contact between the maglev train and the track; guidance enables the maglev train to turn and prevent rollover; and traction enables the maglev train to move forward. When power is cut off, the magnetic force disappears, and the train will descend onto the track. If the track is not flat or contains small foreign objects, the train will be directly placed on the track, which can damage the train equipment and track structure, and also hinder equipment maintenance.

[0003] Patent authorization number CN204956147U discloses an inorganic composite polystyrene Class A insulation board with fireproof function, including a mounting bracket and a friction block fixing seat. The friction block fixing seat is fixed to the lower end of the mounting bracket. The mounting bracket is fixedly installed at the bottom of a medium-low speed maglev train. The friction block fixing seat is located below the maglev train and above the track of the maglev train. When the power is off, the vertical skid device is mounted on the track, which can be used to support the car body, prevent the car body from being impacted, and facilitate equipment maintenance and inspection.

[0004] However, in patent authorization number CN204956147U, a groove is provided below the friction block fixing seat, and a friction block is installed in the groove. When the power is off, the vertical skid device at the bottom of the train is supported on the F-rail to prevent the train equipment from directly contacting the track and damaging the equipment and track. If unevenness is encountered, the friction block will rub against the F-rail to adjust the level. Because the friction block generates high temperature during contact with the track, the high temperature will weaken the friction between the friction block and the track, resulting in insensitive level adjustment. Therefore, we propose a vertical skid device for medium and low speed maglev trains to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a vertical skid device for medium and low speed maglev trains. During the friction process, the maglev train is in a sliding state, so the airflow comes into contact with the friction block through the air passages opened on the heat dissipation plate, which can effectively remove some of the heat on the friction block. Furthermore, the friction block is in direct contact with the heat dissipation plate, which can conduct heat to the heat dissipation plate. At the same time, the fins are used to increase the heat exchange area, which can effectively reduce the overall heat of the friction block, thereby improving the friction between the friction block and the track and ensuring the sensitivity of the horizontal adjustment of the maglev train.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A vertical skid device for a medium-low speed maglev train includes a mounting bracket and mounting holes formed on the mounting bracket, wherein a fixing seat is installed at the bottom end of the mounting bracket.

[0010] The bottom of the fixed base is provided with an installation groove, and a friction block with its bottom protruding from the fixed base is installed on the inner side of the installation groove;

[0011] The mounting base has an assembly opening on its side wall. Screw holes are symmetrically provided on the edge of the assembly opening. A heat dissipation plate that fits against the friction block is installed on the inner side of the assembly opening. Air passages are provided on the surface of the heat dissipation plate near the friction block, and multiple air passages are arranged longitudinally at equal intervals. Fins are integrally formed on the surface of the heat dissipation plate away from the friction block, and multiple fins are arranged longitudinally at equal intervals. Hexagonal bolts that are screwed into the screw holes are installed on the edge of the heat dissipation plate.

[0012] Furthermore, countersunk holes are symmetrically provided through the bottom of the friction block;

[0013] The bottom of the mounting bracket has an assembly hole corresponding to the countersunk hole.

[0014] Furthermore, a countersunk bolt is installed inside the countersunk hole, which penetrates the fixing seat and passes through the assembly hole, and a lock nut is installed at one end of the countersunk bolt that passes through the assembly hole.

[0015] Furthermore, the portion of the heat sink that comes into contact with the friction block is coated with thermally conductive silicone grease.

[0016] Furthermore, the port portion of the air passage protrudes from the assembly port.

[0017] Furthermore, the heat sink is made of copper-aluminum alloy.

[0018] Furthermore, both the countersunk bolt and the hexagonal bolt are equipped with elastic washers.

[0019] 3. Beneficial effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] In this design, when the low-speed maglev train loses power, the mounting supports of the vertical skid device at the bottom of the train are supported on the track to prevent direct contact between the train equipment and the track, which could damage the equipment and the track. If unevenness is encountered, friction will occur between the friction blocks and the track to adjust the level. During the friction process, the maglev train is in a sliding state, so the airflow comes into contact with the friction blocks through the air channels opened on the heat sink, which can effectively remove some of the heat from the friction blocks. Furthermore, the friction blocks are in direct contact with the heat sink, which can conduct heat to the heat sink. At the same time, the fins are used to increase the heat exchange area, which can effectively reduce the overall heat of the friction blocks, thereby increasing the friction between the friction blocks and the track and ensuring the sensitivity of the maglev train's level adjustment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the fixing base structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the friction block structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the heat sink structure of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Mounting support; 2. Mounting hole; 3. Fixing seat; 4. Friction block; 5. Countersunk hole; 6. Countersunk bolt; 7. Locking nut; 8. Assembly hole; 9. Elastic washer; 10. Assembly port; 11. Screw hole; 12. Heat sink; 13. Air passage; 14. Fin; 15. Hex bolt. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] Please see Figure 1-5 A vertical skid device for a medium-low speed maglev train includes a mounting support 1 and mounting holes 2 opened on the mounting support 1. A fixing seat 3 is installed at the bottom end of the mounting support 1.

[0032] The bottom of the fixed base 3 is provided with an installation groove, and a friction block 4 with its bottom protruding from the fixed base 3 is installed on the inner side of the installation groove;

[0033] The side wall of the fixed base 3 is provided with an assembly opening 10. The edge of the assembly opening 10 is symmetrically provided with screw holes 11. The inner side of the assembly opening 10 is provided with a heat dissipation plate 12 that fits against the friction block 4. The surface of the heat dissipation plate 12 near the friction block 4 is provided with an air passage 13, and multiple air passages 13 are arranged longitudinally at equal intervals. The surface of the heat dissipation plate 12 away from the friction block 4 is integrally formed with fins 14, and multiple fins 14 are arranged longitudinally at equal intervals. The edge of the heat dissipation plate 12 is provided with a hexagonal bolt 15 that is screwed into the screw hole 11.

[0034] It should be noted that when the vertical skid device of the medium-low speed maglev train is in use, when the medium-low speed maglev train is powered off, the mounting support 1 of the vertical skid device at the bottom of the train is supported on the track to prevent the train equipment from directly contacting the track and damaging the equipment and track. If unevenness is encountered, the friction block 4 will rub against the track to adjust the level. During the friction process, the maglev train is in a sliding state. Therefore, the airflow comes into contact with the friction block 4 through the air channel 13 opened on the heat sink 12, which can effectively remove some of the heat on the friction block 4. In addition, the friction block 4 is in direct contact with the heat sink 12, which can conduct heat to the heat sink 12. At the same time, the fins 14 are used to increase the heat exchange area, which can effectively reduce the overall heat of the friction block 4, thereby increasing the friction between the friction block 4 and the track and ensuring the sensitivity of the level adjustment of the maglev train.

[0035] Friction block 4 is made of copper-based sintered alloy material, which has high wear resistance and is non-magnetic. It is especially suitable for high-speed and heavy-load operation. After friction is generated, there is no crushing of hard phases, no shedding, uniform wear, and high lubricity. It not only plays a role in adjusting the level, but also ensures the normal operation of the maglev train.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, countersunk holes 5 are symmetrically opened through the bottom of the friction block 4;

[0037] The bottom of the mounting bracket 1 is provided with an assembly hole 8 corresponding to the countersunk hole 5. A countersunk bolt 6 that passes through the fixing seat 3 and through the assembly hole 8 is installed on the inner side of the countersunk hole 5, and a lock nut 7 is installed on one end of the countersunk bolt 6 that passes through the assembly hole 8.

[0038] It should be noted that by assembling the countersunk bolt 6 into the inside of the countersunk hole 5, allowing it to pass through the fixing seat 3 and the mounting hole 8, and then using the lock nut 7 to lock the countersunk bolt 6, it is convenient to disassemble and replace the friction block 4, while ensuring that the friction block 4 can directly contact the track.

[0039] like Figure 2 , Figure 5 As shown, the part of the heat sink 12 that is in contact with the friction block 4 is coated with thermal grease, and the heat sink 12 is made of copper-aluminum alloy.

[0040] It should be noted that this facilitates the transfer of heat between the heat sink 12 and the friction block 4.

[0041] like Figure 1 , Figure 3 , Figure 5 As shown, the port portion of the air passage 13 protrudes from the assembly port 10;

[0042] It should be noted that the airflow comes into contact with the friction block 4 through the air passage 13 opened on the heat sink 12, which can effectively remove some of the heat from the friction block 4 and has a good passive heat dissipation effect on the friction block 4.

[0043] like Figure 2 As shown, both the countersunk bolt 6 and the hex bolt 15 are equipped with elastic washers 9;

[0044] It should be noted that this effectively prevents the countersunk bolt 6 and the hex bolt 15 from loosening.

[0045] In use: When the low-speed maglev train is powered off, the mounting bracket 1 of the vertical skid device at the bottom of the train is supported on the track to prevent the train equipment from directly contacting the track and damaging the equipment and track. If it encounters unevenness, the friction block 4 will rub against the track to adjust the level. During the friction process, the maglev train is in a sliding state. Therefore, the airflow comes into contact with the friction block 4 through the air passage 13 opened on the heat sink 12, which can effectively remove some of the heat on the friction block 4. The friction block 4 is in direct contact with the heat sink 12, which can conduct heat to the heat sink 12. At the same time, the fins 14 are used to increase the heat exchange area, which can effectively reduce the overall heat of the friction block 4, thereby increasing the friction between the friction block 4 and the track and ensuring the sensitivity of the maglev train's level adjustment.

[0046] Friction block 4 is made of copper-based sintered alloy material, which has high wear resistance and is non-magnetic. It is especially suitable for high-speed and heavy-load operation. After friction is generated, there is no crushing of hard phases, no shedding, uniform wear, and high lubricity. It not only plays a role in adjusting the level, but also ensures the normal operation of the maglev train.

[0047] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A vertical skid device of a low-medium speed maglev train, comprising a mounting support (1) and a mounting hole (2) opened on the mounting support (1), characterized in that: The bottom end of the mounting support (1) is provided with a fixing seat (3); The bottom of the fixing seat (3) is provided with a mounting groove, and the inner side of the mounting groove is provided with a friction block (4) protruding from the fixing seat (3); The side wall of the fixing seat (3) is provided with an assembly opening (10), the edge part of the assembly opening (10) is symmetrically provided with a screw hole (11), the inner side of the assembly opening (10) is provided with a heat dissipation plate (12) abutting the friction block (4), the surface of the heat dissipation plate (12) close to the friction block (4) is provided with an air channel (13), a plurality of air channels (13) are longitudinally equidistantly arranged, the surface of the heat dissipation plate (12) away from the friction block (4) is integrally formed with a fin (14), a plurality of fins (14) are longitudinally equidistantly arranged, and the edge part of the heat dissipation plate (12) is provided with a hexagonal bolt (15) screwed with the screw hole (11).

2. The vertical skid device of a medium-low speed maglev train according to claim 1, characterized in that: The bottom of the friction block (4) is symmetrically provided with a countersunk hole (5); The bottom of the mounting support (1) is provided with an assembly hole (8) corresponding to the countersunk hole (5).

3. The vertical skid device of a medium-low speed maglev train according to claim 2, characterized in that: The inner side of the countersunk hole (5) is provided with a countersunk bolt (6) penetrating through the fixing seat (3) and the assembly hole (8), and one end of the countersunk bolt (6) penetrating through the assembly hole (8) is provided with a locking nut (7).

4. The vertical skid device of a medium-low speed maglev train according to claim 1, characterized in that: The part of the heat dissipation plate (12) abutting the friction block (4) is coated with a heat-conducting silicone grease.

5. The vertical skid device of a medium-low speed maglev train according to claim 1, characterized in that: The port part of the air channel (13) protrudes from the assembly opening (10).

6. The vertical skid device of a medium-low speed maglev train according to claim 1, characterized in that: The heat dissipation plate (12) is made of copper-aluminum alloy material.

7. The vertical skid device of a medium-low speed maglev train according to claim 3, characterized in that: The countersunk bolt (6) and the hexagonal bolt (15) are both provided with an elastic gasket (9).

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