Monorail vehicle hourglass spring sealing structure

Abstract

The utility model discloses an hourglass spring sealing structure of a monorail vehicle, which is applied to a secondary suspension assembly of the monorail vehicle. The upper part of the hourglass spring is connected with the multifunctional bracket; the multifunctional bracket is connected with the vehicle body chassis; the lower part of the hourglass spring is connected with the bogie welding framework assembly; a hourglass spring sealing base plate assembly is arranged at the connecting position of the hourglass spring and the multifunctional support. By adopting the technical scheme, the problem of water accumulation of the secondary suspension assembly is thoroughly solved by adopting a simple structure, so that the risk that metal parts on the periphery of the cavity are eroded is avoided; the maintenance work of the hourglass spring caused by water accumulation is avoided, and the maintenance cost of a vehicle is reduced; the waterproof base plate of the monorail hourglass spring is simple in structure, convenient to install, low in later maintenance cost and low in configuration and requirements for installation and maintenance personnel.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit vehicle structures and is applied to rubber-wheeled automatic guided rail transit vehicles. More specifically, the utility model relates to an hourglass spring sealing structure for a monorail vehicle. Background Art

[0002] like Figure 1 As shown, the secondary suspension assembly 1 of a rubber-tyred automated guided vehicle (RAV) primarily consists of an hourglass spring, a multifunctional bracket, other stops, and a shock absorber. The hourglass spring's base is connected to the bogie welded frame assembly 3 via fasteners, while its upper portion is connected to the multifunctional bracket. The upper portion of the multifunctional bracket, in turn, is connected to the vehicle underframe 2. When the bogie is connected to the vehicle body, a continuous cavity is formed between the hourglass spring, the multifunctional bracket, and the vehicle underframe.

[0003] During rainy days, when a vehicle is operating (or washing a car), rainwater and sewage can enter the cavity through the gaps at the three joints, causing water to accumulate. If the accumulated water is not drained promptly, a humid environment will form inside the cavity, corroding surrounding metal components and reducing their lifespan. Due to the special structure of the secondary suspension components and the limited space around them, the only way to remove the accumulated water is to drop the bogie from the vehicle chassis and then use a catheter to suck out the accumulated water. This maintenance method is labor-intensive and time-consuming, and the accumulated water is likely to remain.

[0004] Using keywords such as "monorail; vehicle; spring; seal; suspension" to search existing technical literature, the following search results were obtained:

[0005] 1. Chinese patent document: "A suspended monorail vehicle hanger structure", patent (application) number: 202120646968.7; the technical solution described therein is:

[0006] "The structure of the suspended monorail vehicle hanger consists of 11 components. This application optimizes the design of the hanger from two aspects: the structural strength and process of the hanger, and the component layout and function of the hanger. In the optimization design of the structural strength and process, the overall frame structure is stable, the transmission mechanical properties are excellent, and the implementation process is simple and convenient. In the optimization design of the component layout and function, the positions of the various mounting seats are reasonably arranged, and the connection function is reliable."

[0007] The technical effects recorded are:

[0008] "The design structure is simple, the construction process is convenient, the weight reduction effect is obvious, the overall structure is stable, and the mechanical properties are excellent; it is suitable for the development and application projects of the hanger structure design of suspended monorail vehicles, and provides effective technical support for the bogie structure design of suspended monorail vehicles."

[0009] 2. Chinese patent document: "Monorail bogie with integrated monorail suspension system", patent (application) number: 202211199497.5; the technical solution described therein is:

[0010] "A monorail bogie with an integrated monorail suspension system, comprising an integrated monorail suspension system, the integrated monorail suspension system comprising a multifunctional bracket and an air spring, a lateral shock absorber, a vertical shock absorber, a lateral baffle, an anti-overcharge chain, and a height adjustment device integrated and mounted on the multifunctional bracket, wherein an air inlet of the height valve is connected to a main air duct, and an air outlet of the height valve is connected to an air inlet at the bottom of the air spring via an additional air chamber";

[0011] The technical effects recorded are:

[0012] "Within the limited space of the monorail bogie, the monorail suspension system is integrated into a design with a compact and reasonable layout that saves space, provides lower vertical suspension stiffness, and improves the comfort performance of the monorail vehicle. By optimizing the relevant parameters of the air spring and height adjustment device, the monorail bogie can pass through small-radius curves with a minimum radius of 46 meters."

[0013] However, the technical solutions recorded in the above-mentioned technical documents and the related technical solutions currently in public application have not been able to solve the problems and defects of the hourglass spring in the existing technology, namely, "a humid environment will be formed in the cavity, which will corrode the metal parts around the cavity and reduce its lifespan", and "the maintenance method is labor-intensive and time-consuming, and water is easily retained". Utility Model Content

[0014] The utility model provides an hourglass spring sealing structure for a monorail vehicle, which aims to solve the problem of water accumulation in a suspension component.

[0015] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0016] The utility model discloses an hourglass spring sealing structure for a monorail vehicle, which is applied to a secondary suspension assembly of a monorail vehicle. The upper portion of the hourglass spring is connected to a multifunctional bracket; the multifunctional bracket is connected to a vehicle body underframe; the lower portion of the hourglass spring is connected to a bogie welding frame assembly; and an hourglass spring sealing pad assembly is provided at the connection portion between the hourglass spring and the multifunctional bracket.

[0017] The hourglass spring sealing plate assembly includes a sealing plate and an O-ring; a sealing ring groove is provided on the plane of the sealing plate facing the hourglass spring; when the hourglass spring sealing structure is installed and fixed, the cross section of the O-ring is radially compressed and embedded in the sealing ring groove, so that the two planes of the sealing plate are in close contact with the bottom plane of the multi-functional bracket and the upper end surface of the hourglass spring respectively.

[0018] The center of the sealing ring groove coincides with the geometric center of the surface of the sealing pad.

[0019] A linear groove is provided on the plane of the sealing pad facing the multifunctional bracket.

[0020] The linear groove passes through the geometric center of the surface of the sealing pad.

[0021] The linear groove is shallowest at the geometric center of the surface of the sealing pad and deepest at both ends, forming two outward and downward slopes.

[0022] The sealing pad is a tiny protrusion facing the multifunctional bracket, and the geometric center of the surface of the sealing pad is the highest point of the tiny protrusion.

[0023] The surface of the part in contact with the sealing pad is shaped to match the tiny protrusions.

[0024] The utility model adopts the above technical solution. First, it completely solves the problem of water accumulation in the secondary suspension assembly with a simple structure, so that the metal parts around the cavity are protected from the risk of erosion; secondly, it avoids the complicated maintenance work of the hourglass spring caused by water accumulation, and reduces the maintenance cost of the vehicle; finally, the monorail hourglass spring waterproof pad has a simple structure and is easy to install, with low subsequent maintenance costs, and low configuration and requirements for installation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The contents shown in the accompanying drawings and the symbols in the drawings are briefly described as follows:

[0026] Figure 1 It is a front structural diagram described in the background technology;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 3 This is an exploded diagram of the structure of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the sealing pad and O-ring in the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing gasket and its linear groove;

[0031] Figure 6 This is a front projection of one side of the linear groove on the sealing pad of the utility model;

[0032] Figure 7 for Figure 6 AA section view in;

[0033] Figure 8 for Figure 7 An enlarged cross-sectional view of the B part (straight groove);

[0034] Figure 9 for Figure 7 An enlarged cross-sectional view of the C part (seal ring groove).

[0035] The following are marked in the figure:

[0036] 1. Secondary suspension assembly, 2. Car body underframe, 3. Bogie welding frame assembly, 11. Multi-function bracket, 12. Hourglass spring, 13. Hourglass spring sealing plate assembly, 14. O-ring, 15. Sealing plate, 16. Linear groove, 17. Sealing ring groove. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0038] like Figures 2 to 9 The structure of the utility model shown is an hourglass spring sealing structure for a monorail vehicle, which is applied to the secondary suspension assembly 1 of a monorail vehicle; the upper part of the hourglass spring 12 is connected to the multifunctional bracket 11; the multifunctional bracket 11 is connected to the vehicle body underframe 2; and the lower part of the hourglass spring 12 is connected to the bogie welding frame assembly 3.

[0039] In order to solve the problems existing in the prior art and overcome its defects, and to achieve the invention purpose of solving the problem of water accumulation in the suspension assembly, the technical solution adopted by the present utility model is as follows:

[0040] like Figures 2 to 9 As shown, in the hourglass spring sealing structure of the monorail vehicle of the present invention, an hourglass spring sealing pad assembly 13 is provided at the connection portion between the hourglass spring 12 and the multifunctional bracket 11 .

[0041] The above-mentioned monorail vehicle hourglass spring sealing gasket assembly 13 is suitable for straddle-type monorail vehicle systems. The monorail hourglass spring sealing gasket is used to replace part of the gaskets between the original hourglass spring and the multi-functional bracket, so that water cannot accumulate in the cavity formed by the hourglass spring 12, the multi-functional bracket 11, and the vehicle body frame, thereby eliminating the need for drainage maintenance work in the cavity of the secondary suspension assembly.

[0042] The hourglass spring sealing plate assembly 13 includes a sealing plate 15 and an O-ring 14; a sealing ring groove 17 is provided on the plane of the sealing plate 15 facing the hourglass spring 12; when the hourglass spring sealing structure is installed and fixed, the cross section of the O-ring 14 is radially compressed and embedded in the sealing ring groove 17, so that the two planes of the sealing plate 15 are in close contact with the bottom plane of the multi-functional bracket 11 and the upper end surface of the hourglass spring 12 respectively.

[0043] The monorail hourglass spring sealing plate assembly 13 consists of two components: a machined sealing plate 15, which matches the outer contour of the gasket between the hourglass spring and the multi-function bracket and serves as a water drain; and a standard O-ring 14, a universal standard seal that provides a waterproof seal. The monorail hourglass spring sealing plate assembly 13 can be used as a standard gasket; the O-ring 14 can be replaced during vehicle maintenance.

[0044] Due to the provision of the O-ring 14 , rainwater will not be able to enter the upper bowl-shaped structure of the hourglass spring 12 from the gap between the monorail hourglass spring sealing pad assembly 13 and the hourglass spring 12 , thus completely solving the problem of water accumulation in the secondary suspension assembly.

[0045] The center of the sealing ring groove 17 coincides with the geometric center of the surface of the sealing pad 15 .

[0046] A linear groove 16 is provided on the plane of the sealing pad 15 facing the multifunctional bracket 11 .

[0047] The sealing pad 15 is grooved on both sides. One side is an O-ring 14. After the O-ring 14 is installed, it is tightly attached to the upper part of the hourglass spring 12, so that the upper part of the hourglass spring 12 is sealed to prevent moisture from entering; the other side is a linear groove 16 that passes through the waterproof pad. The setting of the linear groove 16 connects the cavity formed between the multi-functional bracket 11 and the vehicle body chassis 2 with the outside, so that the accumulated water in the cavity can be discharged from the linear groove 16.

[0048] The linear groove 16 passes through the geometric center of the surface of the sealing pad 15 .

[0049] The structural principle of the monorail hourglass spring sealing plate assembly 13 of the utility model is as follows:

[0050] When rainwater enters the middle cavity from the gap between the multifunctional bracket 11 and the gasket of the vehicle body chassis assembly 2, the rainwater will gather at the upper part of the monorail hourglass spring sealing pad assembly 13 and eventually be discharged from the cavity through the upper linear groove 16 with a width of L1.

[0051] The beneficial effects of the utility model are:

[0052] Firstly, the monorail hourglass spring sealing plate assembly adopts a simple structure, which completely solves the problem of water accumulation in the secondary suspension components and avoids the risk of corrosion of metal parts around the cavity;

[0053] Secondly, the maintenance work of the hourglass spring 12 caused by water accumulation is avoided, thereby reducing the maintenance cost of the vehicle;

[0054] Finally, the monorail hourglass spring waterproof pad has a simple structure and is easy to install, with low subsequent maintenance costs and low requirements for installation and maintenance personnel.

[0055] The linear groove 16 is shallowest at the geometric center of the surface of the sealing pad 15 and deepest at both ends, forming two outward and downward slopes.

[0056] In this way, the accumulated water can be easily discharged from both ends of the linear groove 16 .

[0057] The sealing pad 15 is a tiny protrusion facing the multifunctional bracket 11 , and the geometric center of the surface of the sealing pad 15 is the highest point of the tiny protrusion.

[0058] Similar to the above technical solution, it is also convenient for the accumulated water to flow toward the outer periphery of the sealing pad 15 and finally be discharged from the two ends of the linear groove 16.

[0059] The surface of the part in contact with the sealing pad 15 is shaped to match the micro-protrusions.

[0060] The surface contact corresponding to the shape of the sealing pad 15 is adopted to make the contact more reliable and firm.

[0061] During assembly, first pre-assemble the monorail hourglass spring sealing plate 15 and the O-ring 14 together to form a pre-assembly, and then press the pre-assembly with other gaskets. Figure 3 Place them between the upper part of the hourglass spring 12 and the multi-function bracket 11 in the order of the exploded diagram, and finally fasten them with fasteners.

[0062] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A monorail vehicle hourglass spring sealing structure, applied to a secondary suspension assembly (1) of a monorail vehicle; the upper portion of the hourglass spring (12) is connected to a multifunctional bracket (11); the multifunctional bracket (11) is connected to a vehicle body underframe (2); the lower portion of the hourglass spring (12) is connected to a bogie welding frame assembly (3); characterized in that: An hourglass spring sealing pad assembly (13) is provided at the connection portion between the hourglass spring (12) and the multifunctional bracket (11).

2. The hourglass spring sealing structure for a monorail vehicle according to claim 1, characterized in that: The hourglass spring sealing plate assembly (13) includes a sealing plate (15) and an O-ring (14); a sealing ring groove (17) is provided on the plane of the sealing plate (15) facing the hourglass spring (12); when the hourglass spring sealing structure is installed and fixed, the cross section of the O-ring (14) is radially compressed and embedded in the sealing ring groove (17), so that the two planes of the sealing plate (15) are in close contact with the bottom plane of the multifunctional bracket (11) and the upper end surface of the hourglass spring (12) respectively.

3. The hourglass spring sealing structure for a monorail vehicle according to claim 2, wherein: The center of the sealing ring groove (17) coincides with the geometric center of the surface of the sealing pad (15).

4. The hourglass spring sealing structure for a monorail vehicle according to claim 2, wherein: A linear groove (16) is provided on the plane of the sealing pad (15) facing the multifunctional bracket (11).

5. The hourglass spring sealing structure for a monorail vehicle according to claim 4, characterized in that: The linear groove (16) passes through the geometric center of the surface of the sealing pad (15).

6. The hourglass spring sealing structure for a monorail vehicle according to claim 5, characterized in that: The linear groove (16) is shallowest at the geometric center of the surface of the sealing pad (15) and deepest at both ends, forming two outward and downward slopes.

7. The hourglass spring sealing structure for a monorail vehicle according to claim 4 or 5, characterized in that: The sealing pad (15) is a tiny protrusion facing the multifunctional bracket (11), and the geometric center of the surface of the sealing pad (15) is the highest point of the tiny protrusion.

8. The hourglass spring sealing structure for a monorail vehicle according to claim 7, characterized in that: The surface of the part in contact with the sealing pad (15) is shaped to match the tiny protrusions.

Images