A high-strength replaceable module subway car body structure

Abstract

The patent discloses a high-strength replaceable module subway car body structure, which comprises a reinforcing plate and a buffer pad, the top four corners of the reinforcing plate are fixedly provided with connecting rods, the left and right ends of the bottom of the reinforcing plate are attached with connecting plates, the top of the connecting plate is provided with a mounting hole, the left and right sides of the bottom of the reinforcing plate are fixedly provided with threaded rods, and the top left and right sides of the buffer pad are attached to the bottom of the two connecting plates respectively. The bottom of the reinforcing plate is provided with a sleeve, the spring is in the sleeve, the height of the sleeve is half of the height of the spring, which is used for reserving the compression stroke of the spring, the spring has no mounting relationship with the reinforcing plate and the buffer pad, and only has an attaching relationship, and the spring will not be separated from the limiting position of the sleeve, which facilitates the subsequent disassembly and replacement of the buffer pad, and the bottom of the buffer pad is fixed through a nut, the nut is pressed on the bottom of the buffer pad, the sealing effect can be improved, and water erosion can be avoided.

Description

Technical Field

[0001] This patent relates to the field of underframe reinforcement technology, specifically a high-strength, replaceable modular subway car body structure. Background Technology

[0002] Traditional subway car undercarriages are reinforced with plates to absorb torsional energy generated during operation and buffer pads at the bottom of these plates to protect against stones kicked up during travel. However, the springs connecting the buffer pads and the reinforcement plates are fixed, making it difficult to disassemble and replace the buffer pads, and the sealing at the fixed position of the buffer pads is poor. Therefore, we propose a high-strength, replaceable modular subway car body structure. Utility Model Content

[0003] The purpose of this patent is to provide a subway car body underframe reinforcement structure with impact resistance to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this patent provides the following technical solution: a high-strength, replaceable modular subway car body structure, including a reinforcing plate and a buffer pad. Connecting rods are fixedly installed at the four top corners of the reinforcing plate, and connecting plates are attached to the left and right ends of the bottom of the reinforcing plate. The top of the connecting plate is provided with mounting holes, and threaded rods are fixedly installed on the left and right sides of the bottom of the reinforcing plate. The top left and right sides of the buffer pad are respectively attached to the bottom of the two connecting plates, and the bottom end of the threaded rod passes through the mounting holes and the buffer pad in sequence and is screwed with a nut.

[0005] Sleeves are fixedly installed on the bottom left and right sides of the reinforcing plate. Springs are installed inside the sleeves, and the upper and lower ends of the springs are respectively attached to the reinforcing plate and the buffer pad.

[0006] The height of the sleeve is half the height of the spring.

[0007] Preferably, the nut includes a nut body and a pressure ring. The nut body is screwed to the bottom end of the threaded rod. The top of the nut body is tightly fitted to the bottom of the pressure ring. The top of the pressure ring is tightly fitted to the bottom of the buffer pad. Limiting grooves are provided on both the left and right sides of the bottom end of the threaded rod. Slider blocks are integrally formed on both the left and right ends of the inner sidewall of the pressure ring. The sliders are slidably installed in the limiting grooves.

[0008] Preferably, the outer diameter of the pressure ring is larger than the outer diameter of the nut body.

[0009] Preferably, the inner diameter of the pressure ring is larger than the diameter of the threaded rod, and the inner sidewall of the pressure ring does not make threaded contact with the sidewall of the threaded rod.

[0010] Preferably, the outer wall of the nut body is provided with an annular groove, and a ring is rotatably installed in the annular groove. The shape and size of the ring match the inner shape and size of the annular groove. A connecting ring is fixedly installed on the outer wall of the ring, and the top of the connecting ring is fixedly installed on the bottom of the pressure ring.

[0011] Preferably, the ring comprises a first half-ring and a second half-ring, with the two ends of the first half-ring and the second half-ring fixed together.

[0012] Compared with the prior art, the beneficial effects of this patent are as follows: This patent has a sleeve installed at the bottom of the reinforcing plate, with the spring inside the sleeve. The height of the sleeve is half the height of the spring, which is used to reserve the compression stroke of the spring. The spring is not installed with the reinforcing plate and the buffer pad, but only in contact with them. The spring will not come out of the limiting position of the sleeve, which facilitates the subsequent disassembly and replacement of the buffer pad. The bottom of the buffer pad is fixed by a nut. The nut is pressed tightly at the bottom of the buffer pad, which can increase the sealing effect and prevent water corrosion. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the entire patent.

[0014] Figure 2 This is a schematic diagram of the overall patent.

[0015] Figure 3 This is a partial structural diagram of this patent.

[0016] In the diagram: 1. Reinforcing plate, 2. Connecting rod, 3. Connecting plate, 4. Threaded rod, 5. Buffer pad, 6. Nut, 7. Sleeve, 8. Spring, 9. Nut body, 10. Pressure ring, 11. Slider, 12. Limiting groove, 13. Annular groove, 14. Circular ring, 15. Connecting ring, 16. Mounting hole. Detailed Implementation

[0017] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0018] Please see Figure 1 , Figure 2 , Figure 3This patent provides a technical solution: a high-strength replaceable module subway car body structure, including a reinforcing plate 1 and a buffer pad 5. Connecting rods 2 are fixedly installed at the top four corners of the reinforcing plate 1. Connecting plates 3 are attached to the bottom left and right ends of the reinforcing plate 1. The top of the connecting plate 3 is provided with mounting holes 16. Threaded rods 4 are fixedly installed on the bottom left and right sides of the reinforcing plate 1. The top left and right sides of the buffer pad 5 are respectively attached to the bottom of the two connecting plates 3. The bottom end of the threaded rod 4 passes through the mounting holes 16 and the buffer pad 5 in sequence and is screwed with a nut 6.

[0019] Reinforcing plate 1

[0020] Parameters: Thickness is 10-15mm, and the size is determined according to the specific specifications of the subway car body to meet the strength requirements of the car body.

[0021] Material: High-strength steel plate, such as Q460 steel plate, is used. It has high strength, good plasticity and toughness, and can absorb the torsional energy generated during vehicle operation to ensure the compressive strength of the vehicle body.

[0022] Link 2

[0023] Parameters: The diameter can be set to 10-15mm, and the length is determined according to the size of the reinforcing plate 1 and the assembly requirements with other components, such as 100-150mm.

[0024] Material: High-strength alloy structural steel, such as 42CrMo, is used, which has high strength, good toughness and wear resistance, and can meet the connection strength requirements of the subway car body.

[0025] Threaded rod 4

[0026] Parameters: The diameter is usually 12-20mm, and the length must be sufficient to pass through the mounting hole 16 and the buffer pad 5 in sequence, and have enough thread length to connect with the nut 6. It is generally 80-120mm, and the thread specification can be M12-M20.

[0027] Material: High-quality carbon structural steel, such as 45 steel, is selected. After quenching and tempering, it has high strength and good machinability, which can ensure the reliability of threaded connection.

[0028] Sleeves 7 are fixedly installed on both the left and right sides of the bottom of the reinforcing plate 1. Springs 8 are installed inside the sleeves 7. The upper and lower ends of the springs 8 are respectively attached to the reinforcing plate 1 and the buffer pad 5.

[0029] 5 cushioning pads

[0030] Parameters: Thickness is 20-30mm, and the size is adapted to the bottom of the reinforcing plate 1 to completely block foreign objects such as stones.

[0031] Material: Made of nitrile rubber, it has good oil resistance, wear resistance and elasticity, can effectively buffer the impact of stones, and has a long service life in the environment of subway car use.

[0032] Sleeve 7

[0033] Parameters: The inner diameter is 2-4mm larger than the outer diameter of spring 8 to facilitate the installation of spring 8 and its normal extension and contraction. The outer diameter can be determined according to the space and strength requirements of the vehicle body structure, such as 20-30mm. The length is half the height of spring 8. If the height of spring 8 is 60mm, then the length of sleeve 7 is 30mm.

[0034] Material: Made of stainless steel, such as 304 stainless steel, which has good corrosion resistance and a certain strength, can be used for a long time in the complex environment of subway car body, and is not easy to rust.

[0035] Spring 8

[0036] Parameters: The wire diameter is 2-4mm, the outer diameter is compatible with the inner diameter of sleeve 7, the free height is determined according to the buffer requirements of the car body, such as 60mm, and the compression stroke can be reserved for about 30mm to meet the buffer requirements during subway operation.

[0037] Material: Spring steel, such as 65Mn, is selected. It has high elastic limit, fatigue limit and good toughness, and can maintain stable performance during repeated compression and rebound, providing reliable cushioning.

[0038] The height of sleeve 7 is half the height of spring 8.

[0039] To increase compressive strength, traditional subway cars have reinforcing plates installed under the car body to absorb the torsional energy generated during operation. Buffer pads are also installed at the bottom of the reinforcing plates to block stones that bounce up during the journey. However, the springs between the buffer pads and the reinforcing plates are fixed connections, making it inconvenient to disassemble and replace the buffer pads later. Furthermore, the fixed position of the buffer pads has poor sealing.

[0040] This solution involves installing a sleeve at the bottom of the reinforcing plate, with the spring inside the sleeve. The height of the sleeve is half the height of the spring, which is used to allow for the compression stroke of the spring. The spring is not installed on the reinforcing plate or the buffer pad, but only in contact with it. The spring will not come out of the limiting position of the sleeve, which facilitates the subsequent disassembly and replacement of the buffer pad. The bottom of the buffer pad is fixed with a nut. The nut is pressed tightly against the bottom of the buffer pad, which can increase the sealing effect and prevent water corrosion.

[0041] Specifically, the nut 6 includes a nut body 9 and a pressure ring 10. The nut body 9 is screwed to the bottom end of the threaded rod 4. The top of the nut body 9 is tightly fitted to the bottom of the pressure ring 10. The top of the pressure ring 10 is tightly fitted to the bottom of the buffer pad 5. Limiting grooves 12 are provided on both the left and right sides of the bottom end of the threaded rod 4. Slider 11 is integrally formed on both the left and right ends of the inner sidewall of the pressure ring 10. The slider 11 is slidably installed in the limiting groove 12.

[0042] Nut body 9

[0043] Parameters: Match the thread specification of the threaded rod 4. For example, if the threaded rod 4 is M12, the nut body 9 is also M12. Its height can be set to 15-25mm to ensure sufficient thread engagement length and ensure a firm connection.

[0044] Material: Made of the same 45 steel as thread rod 4, ensuring the strength and wear resistance of the threaded connection and preventing premature wear or stripping of the threads.

[0045] Pressure ring 10

[0046] Parameters: The inner diameter is 1-2mm larger than the diameter of the threaded rod 4, the outer diameter is 10-15mm larger than the outer diameter of the nut body 9, and the thickness is 5-10mm to ensure sufficient locking area and structural strength.

[0047] Material: Aluminum alloy, such as 6061 aluminum alloy, is selected. It is lightweight, corrosion-resistant and has high strength, which can reduce the weight of the vehicle body while meeting the strength requirements of the compression buffer pad 5.

[0048] Slider 11

[0049] Parameters: The width matches the width of the limiting groove 12, the thickness is 5-8mm, and the length is determined according to the height of the pressure ring 10 and the sliding requirements, such as 20-30mm.

[0050] Material: Made of polyoxymethylene (POM), it has good wear resistance, self-lubrication and certain strength, can slide smoothly in the limiting groove 12, and has a low coefficient of friction, making it less prone to wear on the threaded rod 4.

[0051] Ring 14 (first and second half-rings)

[0052] Parameters: The inner diameter matches the outer diameter of the annular groove 13, the outer diameter is 2-4mm smaller than the outer diameter of the nut body 9, and the thickness is 3-5mm.

[0053] Material: Brass is selected, which has good wear resistance, corrosion resistance and easy processing. It can rotate flexibly in the annular groove 13 and has good fit performance with the nut body 9 and the connecting ring 15.

[0054] Connecting ring 15

[0055] Parameters: The cross-section can be set to rectangular, with a width of 5-8mm, a thickness of 3-5mm, and the length is determined according to the relative position of the nut body 9 and the pressure ring 10.

[0056] Material: Same as pressure ring 10, using 6061 aluminum alloy to ensure the reliability of the connection with pressure ring 10 and the consistency of materials, while reducing weight.

[0057] If a single nut is directly tightened to the bottom of the buffer pad 5, the tightening by rotation can easily cause wrinkles on the bottom of the buffer pad 5, affecting the sealing effect and causing serious wear to the bottom of the buffer pad 5.

[0058] By tightening the nut body 9, the pressure ring 10 can be used to press the bottom of the buffer pad 5 in a straight line (because the slider 11 is slidably installed in the limiting groove 12), thus avoiding wrinkles and wear on the bottom of the buffer pad 5 and improving its service life.

[0059] Specifically, the outer diameter of the pressure ring 10 is larger than the outer diameter of the nut body 9.

[0060] like Figure 3 As shown, the large-diameter pressure ring 10 can increase the locking area of ​​the pressure ring 10 on the buffer pad 5, thereby improving the fixing effect.

[0061] Specifically, the inner diameter of the pressure ring 10 is larger than the diameter of the threaded rod 4, and the inner sidewall of the pressure ring 10 does not make threaded contact with the sidewall of the threaded rod 4.

[0062] Specifically, the outer wall of the nut body 9 is provided with an annular groove 13, and a ring 14 is rotatably installed in the annular groove 13. The shape and size of the ring 14 match the internal shape and size of the annular groove 13. A connecting ring 15 is fixedly installed on the outer wall of the ring 14, and the top of the connecting ring 15 is fixedly installed on the bottom of the pressure ring 10.

[0063] When the nut body 9 is rotated to move up and down, the ring 14 can simultaneously drive the pressure ring 10 to move up and down, causing the two to rotate relative to each other and increasing their integrated effect.

[0064] Specifically, the ring 14 includes a first half-ring and a second half-ring, with the two ends of the first half-ring and the second half-ring fixed together.

[0065] By dividing the ring 14 into a first half-ring and a second half-ring (not shown in the figure), it is convenient to install two identical first half-rings and second half-rings in the annular groove 13 in the early stage. After installation, the two ends of the first half-ring and the second half-ring can be fixed.

[0066] Working principle: When it is necessary to disassemble the buffer pad 5, since the bottom of the spring 8 and the top of the buffer pad 5 are only in contact, the nut 6 can be directly removed to complete the disassembly of the buffer pad 5, which is convenient for subsequent disassembly and replacement of the buffer pad 5. The bottom of the buffer pad 5 is fixed by the nut 6. The nut 6 is pressed tightly on the bottom of the buffer pad 5, which can increase the sealing effect and prevent water corrosion.

[0067] It should be noted that the device structure and accompanying drawings of this patent mainly describe the principle of this patent. In terms of the technical aspects of this design principle, the setting of the device's power mechanism, power supply system and control system is not fully described. However, those skilled in the art who understand the principle of the above patent can clearly understand the specifics of its power mechanism, power supply system and control system.

[0068] In the description of this patent, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0069] Although embodiments of this patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this patent, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength, replaceable-module subway car body structure, characterized in that: The device includes a reinforcing plate (1) and a buffer pad (5). A connecting rod (2) is fixedly installed at the top four corners of the reinforcing plate (1). A connecting plate (3) is attached to the bottom left and right ends of the reinforcing plate (1). The top of the connecting plate (3) is provided with a mounting hole (16). A threaded rod (4) is fixedly installed on the bottom left and right sides of the reinforcing plate (1). The top left and right sides of the buffer pad (5) are respectively attached to the bottom of the two connecting plates (3). The bottom end of the threaded rod (4) passes through the mounting hole (16) and the buffer pad (5) and is screwed with a nut (6). The bottom left and right sides of the reinforcing plate (1) are fixedly installed with sleeves (7), and springs (8) are provided inside the sleeves (7). The upper and lower ends of the springs (8) are respectively attached to the reinforcing plate (1) and the buffer pad (5). The height of the sleeve (7) is half the height of the spring (8).

2. The high-strength replaceable module subway car body structure according to claim 1, characterized in that: The nut (6) includes a nut body (9) and a pressure ring (10). The nut body (9) is screwed to the bottom end of the threaded rod (4). The top of the nut body (9) is tightly fitted to the bottom of the pressure ring (10). The top of the pressure ring (10) is tightly fitted to the bottom of the buffer pad (5). The bottom end of the threaded rod (4) is provided with limiting grooves (12) on both the left and right sides. The inner sidewall of the pressure ring (10) is integrally formed with sliders (11) on both the left and right ends. The sliders (11) are slidably installed in the limiting grooves (12).

3. The high-strength replaceable module subway car body structure according to claim 2, characterized in that: The outer diameter of the pressure ring (10) is larger than the outer diameter of the nut body (9).

4. A high-strength, replaceable-module subway car body structure according to claim 2, characterized in that: The inner diameter of the pressure ring (10) is greater than the diameter of the threaded rod (4), and the inner sidewall of the pressure ring (10) does not make threaded contact with the sidewall of the threaded rod (4).

5. A high-strength, replaceable-module subway car body structure according to claim 2, characterized in that: The outer wall of the nut body (9) is provided with an annular groove (13), and a ring (14) is rotatably installed in the annular groove (13). The shape and size of the ring (14) match the internal shape and size of the annular groove (13). A connecting ring (15) is fixedly installed on the outer wall of the ring (14), and the top of the connecting ring (15) is fixedly installed on the bottom of the pressure ring (10).

6. A high-strength, replaceable-module subway car body structure according to claim 5, characterized in that: The ring (14) includes a first half-ring and a second half-ring, with the two ends of the first half-ring and the second half-ring fixed together.

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