Device for improving sand and dust prevention performance of rail transit external door suspension device

Abstract

According to the technical scheme, the device for improving the sand and dust prevention performance of the rail transit externally-hung door suspension device comprises sealing plates located at the ends of the two sides of an externally-hung door suspension beam, the shape and size of the sealing plates are matched with the area between the suspension beam and a vehicle body outer cover plate, each sealing plate comprises two metal plates with the same shape and size, the two metal plates are aligned, and the sealing plates are arranged on the two metal plates. The two metal plates are fixed to the suspension beam through bolt assemblies, an elastic sealing layer is clamped between the two metal plates, the elastic sealing layer is in clearance fit with the bolts through open holes, the shape and the size of the outer side of the elastic sealing layer are matched with those of an outer cover plate of a vehicle body, and the sand and dust prevention performance of the externally-hung door suspension device is improved.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically a device for improving the dustproof performance of external door suspension devices in rail transit. Background Technology

[0002] The external door system of rail transit vehicles works by placing a suspension device above the exterior of the vehicle body. This device includes a suspension beam and a C-shaped track fixed to the beam. The C-shaped track contains a slider, a retainer, and steel balls, which secure the door panel to the suspended slider, enabling the door to slide. Current designs typically apply grease to the inside of the C-shaped track and the retainer to increase sliding smoothness, reduce opening and closing resistance, and lower operating noise. However, because the entire system operates outside the vehicle, it is subject to significant dust pollution. Despite the added protective structures in the vehicle body exterior design, a large amount of dust still enters, leading to frequent malfunctions, high maintenance frequency, and frequent grease replacements. Utility Model Content

[0003] This invention provides a device to improve the dustproof performance of external door suspension devices in rail transit, thereby addressing the technical deficiencies of the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a device for improving the dust resistance of the external door suspension device in rail transit. The device includes sealing plates located at both ends of the external door suspension beam, the shape and size of which match the area between the suspension beam and the vehicle body cover. Each sealing plate includes two metal plates of the same shape and size, aligned and fixed to the suspension beam by bolt assemblies. An elastic sealing layer is sandwiched between the two metal plates, and the elastic sealing layer and the bolts are fitted through a clearance hole. The outer shape and size of the elastic sealing layer match the vehicle body cover.

[0005] Specifically, the elastic sealing layer is made of rubber.

[0006] Specifically, 3, the rubber is EPDM rubber.

[0007] Specifically, the outer metal plate of the sealing plate is provided with an adjustment hole, through which the elastic sealing layer can be moved after the bolt assembly is loosened.

[0008] Specifically, the adjustment hole is a horizontal waist-shaped hole, and the elastic sealing layer has small round holes in the waist-shaped hole area.

[0009] Specifically, the outer side of the external door suspension beam is provided with upper and lower sealing plates of the same length as the suspension beam. When the vehicle body cover is closed, the sealing plate can overlap the vehicle body cover.

[0010] Specifically, the sealing plate is made of rubber.

[0011] Specifically, the sealing plate is fixed to the suspension beam by a support block.

[0012] Specifically, a brush-pairing structure is added to the inner and outer sides of the crossbeam on the lower side of the door leaf of the suspension beam. The inner side of the brush is fixed to the suspension beam body, and the outer side is fixed by the support block on the suspension beam body. Finally, the inner and outer brushes brush the door leaf at an inclined angle at the same time.

[0013] Specifically, the bristles of the brush are made of nylon.

[0014] Due to the sealing design of the end plates on both sides of the suspension beam, the full-length sealing design of the outer side of the suspension beam and the sealing strip of the vehicle body cover, and the addition of a brush-like structure on the inner and outer sides of the crossbeam on the lower side of the suspension beam, the beneficial effect of this utility model is to improve the sand and dust resistance of the external door suspension design.

[0015] 1) Effectively reduce the failure rate.

[0016] 2) Effectively reduces door jamming and shaking when opening and closing.

[0017] 3) It improves economic efficiency and can extend the maintenance cycle of changing grease. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0019] Figure 1 This is a schematic diagram of the assembly of the sealing plate, suspension beam, and vehicle body cover plate in a device for improving the dust resistance of an external door suspension device in rail transit according to this utility model.

[0020] Figure 2 This is a schematic diagram of the brush working in a device for improving the dust resistance of an external door suspension device in rail transit according to this utility model.

[0021] Among them, 1. Vehicle body panel, 2. Elastic sealing layer, 3. Sealing plate, 4. Adjustment hole, 5. Suspension beam, 6. Door leaf, 7. Outer brush, 8. Inner brush Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by a person of ordinary skill in the art to which this application pertains.

[0024] like Figures 1 to 2 As shown, the technical solution of the present invention is a device for improving the dust resistance of the external door suspension device of rail transit. It includes sealing plates 3 located at both ends of the external door suspension beam 5. The shape and size of the sealing plates 3 match the area between the suspension beam 5 and the outer cover plate 1 of the vehicle body. Each sealing plate 3 includes two metal plates of the same shape and size. The two metal plates are aligned and fixed to the suspension beam 5 by bolt assembly. An elastic sealing layer 2 is sandwiched between the two metal plates. The elastic sealing layer 2 and the bolt are fitted with a clearance through an opening. The outer shape and size of the elastic sealing layer 2 match the outer cover plate 1 of the vehicle body. To reduce the failure rate and minimize the need for frequent lubrication changes, a sealing plate 3 structure was designed at both ends of the suspension beam 5, based on the existing structure. The sealing plates 3, located at the ends of the external door suspension beam 5, have a shape and size that matches the area between the suspension beam 5 and the vehicle body cover 1. This effectively prevents sand and dust from entering from both the left and right ends. Considering vehicle body tolerances, there may be a certain gap between the vehicle body cover 1 and the sealing plate 3. Therefore, the sealing plate 3 is designed as a two-layer sandwich structure with an additional adjustable elastic sealing layer 2 in the middle. When there is a certain error in the contour of the vehicle body cover, the nut can be loosened to adjust the position of the elastic sealing layer 2 between the two metal plates in the inward and outward directions to compensate for manufacturing tolerances, thereby improving the sealing effect. Trial installations showed improved sand and dust protection, and the improved design performed excellently in sand and dust tests.

[0025] Specifically, the elastic sealing layer 2 is made of rubber, which has excellent sealing performance, low compression set, significant leak prevention effect, outstanding noise reduction effect, and strong wear resistance.

[0026] Specifically, 3, the rubber is EPDM rubber. EPDM rubber has strong aging resistance, slow performance degradation after long-term use, long service life, low maintenance cost, wide temperature range, strong chemical resistance, and good resistance to polar solvents.

[0027] Specifically, the outer metal plate of the sealing plate 3 is provided with an adjustment hole 4. After the bolt assembly is loosened, the elastic sealing layer 2 can be moved through the adjustment hole 3. When the vehicle body cover 1 is closed, if there is no operating space to move the elastic sealing layer 2 outside the vehicle, the elastic sealing layer 2 can be moved through the adjustment hole 4.

[0028] Specifically, the adjustment hole 4 is a horizontal waist-shaped hole, and the elastic sealing layer 2 has a small round hole in the waist-shaped hole area. The horizontal waist-shaped hole can increase the adjustment range. When the vehicle body cover 1 is closed, if you want to move the elastic sealing layer 2 outside the vehicle but there is no operating space, you can use a hexagonal stick to drag the elastic sealing layer 2 through the small round hole.

[0029] Specifically, the outer side of the external door suspension beam 5 is provided with upper and lower sealing plates of the same length as the suspension beam 5. When the vehicle body cover 1 is closed, the sealing plate can overlap the vehicle body cover 1. Along the outline of the vehicle body cover 1, a full-length sealing strip is added to the upper and lower parts of the outer side of the suspension beam 5. Its shape and size match the vehicle body cover 1. When the vehicle body cover 1 is closed, the sealing strip can overlap the vehicle body cover 1. When the vehicle body cover 1 is open, it forms a front seal, which can prevent sand and dust from entering the grease of the external suspension from the front.

[0030] Specifically, the sealing plate is made of rubber, which has excellent sealing performance, low compression set, significant leak-proof effect, outstanding noise reduction effect, and strong wear resistance.

[0031] Specifically, the sealing plate is fixed to the suspension beam 5 by a support block. The support block can increase the stability of the sealing plate and reduce the impact on the sliding of the door leaf 6.

[0032] Specifically, a brush structure with opposing brushes is added to the inner and outer sides of the upper crossbeam of the lower door leaf of the suspension beam 5. The inner side 8 of the opposing brushes is fixed to the body of the suspension beam 5, and the outer side brushes are fixed by the support blocks on the body of the suspension beam 5. Finally, the inner and outer brushes brush the door leaf 6 at an inclined angle. The door leaf 6 needs to be fixed to the suspension slider. The door leaf 1 needs to open and close the door, so there is a gap between the lower part of the suspension beam 5 and the upper crossbeam of the door leaf. Without this brush, wind and sand would flow back from bottom to top.

[0033] Specifically, the brush bristles are made of nylon, which has high tensile and yield strength, enabling it to withstand large loads. It also exhibits high toughness, good impact strength, fatigue resistance, and is suitable for components subjected to repeated stress, with outstanding wear resistance.

[0034] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A device for improving the sand and dust resistance of a suspension device for an external door of a rail transit, characterized in that Includes sealing plates (3) located at both ends of the external door suspension beam (5), whose shape and size match the area between the suspension beam (5) and the vehicle body cover (1). Each sealing plate (3) includes two metal plates of the same shape and size. The two metal plates are aligned and fixed to the suspension beam (5) by bolt assembly. An elastic sealing layer (2) is sandwiched between the two metal plates. The elastic sealing layer (2) and the bolt are fitted with a clearance through an opening. The outer shape and size of the elastic sealing layer (2) match the vehicle body cover (1).

2. The device for preventing sand and dust according to claim 1, wherein The elastic sealing layer (2) is made of rubber.

3. The device for preventing sand and dust according to claim 2, wherein The rubber is EPDM rubber.

4. The device for preventing sand and dust according to claim 1, wherein An adjustment hole (4) is provided on the outer metal plate of the sealing plate (3). After the bolt assembly is loosened, the elastic sealing layer (2) can be moved through the adjustment hole (4).

5. The device for preventing sand and dust according to claim 4, wherein The adjustment hole (4) is a horizontal waist-shaped hole, and the elastic sealing layer (2) has small round holes in the waist-shaped hole area.

6. The device for preventing sand and dust according to claim 1, wherein The outer side of the external door suspension beam (5) is provided with sealing plates of the same length as the suspension beam (5) at the top and bottom. When the vehicle body cover (1) is closed, the sealing plate can be attached to the vehicle body cover (1).

7. The device for preventing sand and dust according to claim 6, wherein The sealing plate is made of rubber.

8. The device for preventing sand and dust according to claim 6, wherein The sealing plate is fixed to the suspension beam (5) by a support block.

9. The device for preventing sand and dust according to claim 1, wherein A brush-pairing structure is added to the inner and outer sides of the crossbeam on the lower side of the suspension beam (5). The inner side (8) of the brush is fixed to the body of the suspension beam (5), and the outer side (7) is fixed by the support block on the body of the suspension beam (5). Finally, the inner and outer brushes brush the door leaf (6) at an inclined angle.

10. The device for preventing sand and dust according to claim 9, wherein The bristles of the brush are made of nylon.

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