Railway wagon side bearing dust guard

Abstract

The present invention discloses a dust-proof device for the side bearings of railway freight cars. The device includes: an adjusting shim and a wear plate at the lower end of the upper side bearing body assembly, and an upper mounting seat is clamped between the adjusting shim and the wear plate; a lower mounting seat having the same shape as the bottom end face of the lower side bearing body assembly is movably installed between the lower side bearing body assembly and the bolster; a dust-proof cover is connected between the upper mounting seat and the lower mounting seat, and the upper interface of the dust-proof cover is clamped in the slot of the upper mounting seat, and the lower interface is clamped in the slot of the lower mounting seat; the dust-proof cover has a variable cross-section structure from top to bottom, and a variable cross-section telescopic corrugated structure is provided in the middle and lower parts of the dust-proof cover; when vertical or longitudinal displacement occurs between the upper side bearing body assembly and the lower side bearing body assembly, the telescopic corrugated structure can shrink or expand with the deformation. The dust-proof device of the present invention has no sand and dust entering inside, and can avoid the wear and corrosion of the internal components of the upper and lower side bearing structures caused by sand and dust to the greatest extent.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle technology, specifically to a dustproof device for the side bearing of a railway freight car. Background Technology

[0002] Side bearings, as key components of railway freight cars, are typically divided into upper and lower side bearings. The upper side bearing is mainly located under the sleeper beam of the railway freight car, while the lower side bearing is mainly located on the upper part of the bogie bolster. When railway freight cars operate in deserts, they often face strong winds. Sand particles carried by the wind can accumulate on the contact surfaces of the upper and lower side bearings, causing abnormal wear on the side bearings and even leading to failure of the side bearings, thus endangering driving safety.

[0003] During vehicle operation, the reliability of the side bearings should be ensured to prevent driving safety issues caused by the failure of the side bearings.

[0004] In the existing technology, there is no design for dust protection for the upper and lower side bearings of a vehicle. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a dustproof device for the side bearings of railway freight cars. It features a simple structure, convenient installation, excellent sealing and wind and sand resistance, and prevents sand and dust from entering the device, thus minimizing wear and corrosion of the internal components of the upper and lower side bearing structures caused by sand and dust. Furthermore, it does not fail under high temperature, extreme cold, or high UV radiation conditions, making it highly applicable, safe, and reliable, and meeting the dustproof requirements for the side bearings of railway freight cars.

[0006] To achieve the above objectives, this invention designs a dustproof device for the side bearing of a railway freight car, comprising an upper side bearing assembly fixedly connected to the lower end of the sleeper beam, and a lower side bearing assembly fixedly connected to the upper end of the bolster. Its distinctive feature is that:

[0007] The lower end of the upper support body is movably mounted with an adjusting pad and a wear plate of the same size from top to bottom. An upper mounting seat with the same shape as the adjusting pad is sandwiched between the adjusting pad and the wear plate, and the size of the upper mounting seat is larger than that of the adjusting pad. A first irregular groove is provided around the upper mounting seat.

[0008] A lower mounting seat with the same shape as the bottom end face of the lower side support assembly is movably installed between the lower side support assembly and the bolster assembly, and the size of the lower mounting seat is larger than the size of the bottom end face of the lower side support assembly. A second irregular groove is provided around the lower mounting seat.

[0009] A dust cover connects the upper mounting base and the lower mounting base. The upper interface of the dust cover is fastened in the first irregular groove, and the lower interface is fastened in the second irregular groove. The dust cover has a variable cross-section structure from top to bottom, and a variable cross-section expandable corrugated structure is provided in the lower part of the dust cover. The expandable corrugated structure is away from the contact surface of the upper and lower side bearing components. When vertical displacement occurs between the upper and lower side bearing components, the expandable corrugated structure can shrink or expand vertically with deformation. When longitudinal displacement occurs between the upper and lower side bearing components, the expandable corrugated structure can shrink on one side and expand on the other side in the longitudinal direction.

[0010] Furthermore, the upper mounting base extends upward or downward around its perimeter to form a first irregularly shaped slot; the lower mounting base extends upward or downward around its perimeter to form a second irregularly shaped slot.

[0011] Furthermore, the upper interface of the dust cover is fastened to the first irregular-shaped slot by an adjustable steel wire rope lock, and the lower interface is fastened to the second irregular-shaped slot by an adjustable steel wire rope lock.

[0012] Furthermore, the adjusting pad is square, and the upper interface of the dust cover is square; the bottom end face of the lower side support is elliptical, and the lower interface of the dust cover is elliptical; the dust cover has a variable cross-section structure from square to round from top to bottom.

[0013] Furthermore, the dust cover has a gradually narrowing cross-sectional area from top to bottom, with a thicker upper wall and a thinner lower wall, which can achieve the effect of a smaller deformation at the upper end compared to the lower end.

[0014] Furthermore, each cross section of the dust cover from top to bottom is a multi-segment circular arc with a gradually smooth transition curve, which is used to reduce the air resistance encountered by the dust cover when the vehicle is running.

[0015] Furthermore, there is a large gap between the inner wall of the dust cover and the upper or lower side support components inside.

[0016] Furthermore, the dust cover is made of neoprene rubber, a non-linear material that is resistant to high and low temperatures, UV radiation, and also possesses excellent dynamic fatigue performance.

[0017] Furthermore, the adjusting pad, the upper mounting base, and the wear plate are fixedly connected to the upper side bearing body by bolts; the lower side bearing body, the lower mounting base, and the bolster are fixedly connected to the lower side bearing body by bolts.

[0018] The advantages of this invention are:

[0019] 1. Without changing the original structure of the upper and lower side bearings, the present invention clamps the upper mounting seat on the bottom end face of the upper side bearing and clamps the lower mounting seat between the lower side bearing and the bolster. Then, a dust cover is fitted between the upper and lower mounting seats, and the upper and lower interfaces of the dust cover are sealed and fixed to the upper and lower mounting seats respectively to ensure that no wind and sand enter the dust cover and avoid wind and sand causing wear and corrosion to the internal components of the upper and lower side bearing structures.

[0020] 2. The present invention provides a first irregularly shaped slot around the upper mounting base and a second irregularly shaped slot around the lower mounting base. When installing the dust cover, simply insert the upper interface of the dust cover into the first irregularly shaped slot and the lower interface of the dust cover into the second irregularly shaped slot, and then tighten it with an adjustable steel wire rope buckle. No special tools are required for installation, disassembly is convenient, and maintenance is minimal.

[0021] 3. In order to cope with the possible vertical and longitudinal displacement between the upper and lower side bearing structures, the present invention designs a variable cross-section expandable corrugated structure in the lower part of the dust cover. The relative displacement between the upper and lower side bearing structures in any direction is offset by the vertical, horizontal and front-back deformation of the expandable corrugated structure, so as to ensure the normal operation of the dust cover.

[0022] The dustproof device for railway freight car side bearings of this invention has a simple structure, is easy to install, and has excellent sealing and wind and sand resistance. No wind and sand can enter the dustproof device, which can minimize the wear and corrosion of the internal components of the upper and lower side bearing structures caused by wind and sand. At the same time, it will not fail under high temperature, extreme cold and high ultraviolet radiation environments. It has strong applicability, is safe and reliable, and meets the dustproof requirements of railway freight car side bearings. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the dust cover in the present invention in its uninstalled state;

[0024] Figure 2 This is a front view of the dust cover in the present invention in its uninstalled state;

[0025] Figure 3 This is a side view of the dust cover in the present invention without being installed.

[0026] Figure 4 This is a front view of the dust cover in the installation state of the present invention;

[0027] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0028] Figure 6 This is a side view of the dust cover in the installation state of the present invention;

[0029] In the diagram: 1. Upper side support body; 2. Bolt; 3. Adjusting pad; 4. Upper mounting seat; 5. Adjustable wire rope lock; 6. Dust cover; 7. Wear plate; 8. Lower mounting seat; 9. Lower side support body; 10. Pillar; 11. Pillar beam.

[0030] The upper mounting base 4 includes: a first irregularly shaped slot 4-1;

[0031] The lower mounting base 8 includes: a second irregularly shaped slot 8-1. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 invention 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. Therefore, they should not be construed as limitations on the invention.

[0034] like Figures 1-6 As shown, the dustproof device for the side bearing of the railway freight car of the present invention includes an upper side bearing assembly 1 fixedly connected to the lower end of the sleeper beam assembly 11, and a lower side bearing assembly 9 fixedly connected to the upper end of the bolster 10.

[0035] The lower end of the upper side support 1 is movably mounted with an adjustment pad 3 and a wear plate 7 of the same size from top to bottom. An upper mounting seat 4 with the same shape as the adjustment pad 3 is sandwiched between the adjustment pad 3 and the wear plate 7. The upper mounting seat 4 is larger than the adjustment pad 3. The upper mounting seat 4 is provided with a first irregular groove 4-1 around its perimeter.

[0036] A lower mounting seat 8 with the same shape as the bottom end face of the lower side support assembly 9 is movably installed between the lower side support assembly 9 and the rocker arm 10. The size of the lower mounting seat 8 is larger than the size of the bottom end face of the lower side support assembly 9. A second irregular groove 8-1 is provided around the lower mounting seat 8.

[0037] A dust cover 6 is connected between the upper mounting base 4 and the lower mounting base 8. The upper interface of the dust cover 6 is fastened in the first irregular groove 4-1, and the lower interface is fastened in the second irregular groove 8-1.

[0038] Preferably, the upper mounting base 4 extends upward or downward around its perimeter to form a first irregular groove 4-1; the lower mounting base 8 extends upward or downward around its perimeter to form a second irregular groove 8-1.

[0039] Preferably, the upper interface of the dust cover 6 is fastened to the first irregular-shaped slot 4-1 by an adjustable steel wire rope lock 5, and the lower interface is fastened to the second irregular-shaped slot 8-1 by an adjustable steel wire rope lock 5. After the dust cover 6 is fastened to the first irregular-shaped slot 4-1 and the second irregular-shaped slot 8-1, the adjustable steel wire rope lock 5 is installed for fixation, further improving the sealing performance and firmly securing the dust cover 6 to prevent it from falling off, thus improving reliability. Furthermore, no special installation tools are required, making disassembly simple and maintenance convenient.

[0040] Specifically, the adjusting pad 3, the upper mounting seat 4 and the wear plate 7 are fixedly connected to the upper side bearing assembly 1 by bolts 2; the lower side bearing assembly 9, the lower mounting seat 8 and the rocker arm 10 are fixedly connected to the lower side bearing assembly 9 by bolts 2.

[0041] Without altering the original structure of the upper and lower side bearing components, this invention clamps the upper mounting seat 4 at the bottom end of the upper side bearing component 1 and clamps the lower mounting seat 8 between the lower side bearing component 9 and the bolster 10. A dust cover 6 is then fitted between the upper and lower mounting seats, and the upper and lower interfaces of the dust cover 6 are sealed and fixed to the upper and lower mounting seats respectively, ensuring that no sand or dust enters the dust cover and preventing sand or dust from causing wear and corrosion to the internal components of the upper and lower side bearing structures.

[0042] In addition, the present invention provides a first irregular groove 4-1 around the upper mounting base and a second irregular groove 8-1 around the lower mounting base. When installing the dust cover, simply insert the upper interface of the dust cover 6 into the first irregular groove 4-1 and the lower interface of the dust cover 6 into the second irregular groove 8-1, and then tighten it with the adjustable wire rope buckle 5. No special tools are required for installation, disassembly is convenient, and maintenance is minimal.

[0043] The dust cover 6 has a variable cross-section structure from top to bottom, and the lower part of the dust cover 6 is provided with a variable cross-section expandable corrugated structure. The expandable corrugated structure is away from the contact surface of the upper side support assembly 1 and the lower side support assembly 9. When vertical displacement occurs between the upper side support assembly 1 and the lower side support assembly 9, the expandable corrugated structure can shrink or expand vertically with deformation. When longitudinal displacement occurs between the upper side support assembly 1 and the lower side support assembly 9, the expandable corrugated structure can shrink on one side and expand on the other side in the longitudinal direction.

[0044] Specifically, when the vehicle switches between empty and loaded modes and traverses curves, the relative position between the bolster 10 and the bolster beam assembly 11 changes, resulting in vertical and longitudinal displacement between the upper and lower side bearings. The deformation of the expandable corrugated structure on the dust cover 6 can cancel out the relative displacement in any direction between the upper side bearing assembly 1 and the lower side bearing assembly 9, ensuring the normal operation of the dustproof device.

[0045] Specifically, the adjusting pad 3 is square, and the upper interface of the dust cover 6 is square; the bottom end face of the lower side support 9 is elliptical, and the lower interface of the dust cover 6 is elliptical; the dust cover 6 has a variable cross-section structure from square to round from top to bottom.

[0046] Preferably, the dust cover 6 has a gradually narrowing cross-sectional area from top to bottom, with a thicker upper wall and a thinner lower wall. This design achieves a smaller deformation at the upper end compared to the lower end, thereby reducing the overall deformation of the dust cover 6 and improving its service life. During actual installation, the dust cover 6 is subjected to vertical pressure, which will form a variable cross-section, expandable corrugated structure at the lower part.

[0047] Preferably, each cross section of the dust cover 6 from top to bottom is a multi-segment circular arc with a gradually smooth transition curve, which is used to reduce the air resistance encountered by the dust cover when the vehicle is running.

[0048] Preferably, there is a large gap between the inner wall of the dust cover 6 and the inner upper side bearing assembly 1 or the lower side bearing assembly 9. The corrugated structure is far away from the contact surfaces of the upper and lower side bearings and will not come into contact with any part of the vehicle.

[0049] The dust cover 6 is elastic. Specifically, the dust cover 6 is made of neoprene rubber, a non-linear material that is resistant to high and low temperatures and ultraviolet radiation, and also possesses excellent dynamic fatigue performance. During installation, it only requires slight stretching to fit into the first irregular groove 4-1 or the second irregular groove 8-1. Under the action of elasticity, it fits tightly with the groove, forming a contact-type sealing structure with good sealing performance and a certain limiting function.

[0050] The dustproof device for railway freight car side bearings of this invention has a simple structure, is easy to install, and has excellent sealing and wind and sand resistance. No wind and sand can enter the dustproof device, which can minimize the wear and corrosion of the internal components of the upper and lower side bearing structures caused by wind and sand. At the same time, it will not fail under high temperature, extreme cold and high ultraviolet radiation environments. It has strong applicability and can be used with most existing upper and lower side bearings. It is highly versatile, safe and reliable, and meets the dustproof requirements of railway freight car side bearings.

[0051] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A dustproof device for a railway freight car side bearing, comprising an upper side bearing assembly (1) fixedly connected to the lower end of a sleeper beam assembly (11), and a lower side bearing assembly (9) fixedly connected to the upper end of a bolster (10), characterized in that: The lower end of the upper side support (1) is movably mounted with an adjustment pad (3) and a wear plate (7) of the same size from top to bottom. An upper mounting seat (4) with the same shape as the adjustment pad (3) is sandwiched between the adjustment pad (3) and the wear plate (7). The upper mounting seat (4) is larger than the adjustment pad (3). A first irregular groove (4-1) is provided around the upper mounting seat (4). A lower mounting seat (8) with the same shape as the bottom end face of the lower side support assembly (9) is movably installed between the lower side support assembly (9) and the bolster (10), and the size of the lower mounting seat (8) is larger than the size of the bottom end face of the lower side support assembly (9). A second irregular groove (8-1) is provided around the lower mounting seat (8). A dust cover (6) is fitted between the upper mounting base (4) and the lower mounting base (8). The upper interface of the dust cover (6) is fastened in the first irregular groove (4-1), and the lower interface is fastened in the second irregular groove (8-1). The dust cover (6) has a variable cross-section structure from top to bottom, and a variable cross-section retractable corrugated structure is provided in the lower part of the dust cover (6). The retractable corrugated structure is far away from the contact surface of the upper side support assembly (1) and the lower side support assembly (9). When vertical displacement occurs between the upper side support assembly (1) and the lower side support assembly (9), the retractable corrugated structure can shrink or expand vertically with deformation. When longitudinal displacement occurs between the upper side support assembly (1) and the lower side support assembly (9), the retractable corrugated structure can shrink on one side and expand on the other side in the longitudinal direction. The dust cover (6) has a gradually narrowing cross-sectional area from top to bottom, and the upper wall is thicker and the lower wall is thinner, which can achieve the effect that the upper deformation is relatively smaller than the lower deformation. The dust cover (6) is made of nonlinear material, which is resistant to high and low temperatures, ultraviolet radiation, and has excellent dynamic fatigue performance.

2. The dustproof device for the side bearing of a railway freight car according to claim 1, characterized in that: The upper mounting base (4) extends around the upper or lower sides to form a first irregular groove (4-1). The lower mounting base (8) extends around the upper or lower sides to form a second irregular groove (8-1).

3. The dustproof device for the side bearing of a railway freight car according to claim 2, characterized in that: The upper interface of the dust cover (6) is fastened to the first irregular groove (4-1) by an adjustable steel wire rope buckle (5), and the lower interface is fastened to the second irregular groove (8-1) by an adjustable steel wire rope buckle (5).

4. The dustproof device for the side bearing of a railway freight car according to claim 1, characterized in that: The adjusting pad (3) is square, and the upper interface of the dust cover (6) is square; the bottom end face of the lower side support (9) is elliptical, and the lower interface of the dust cover (6) is elliptical; the dust cover (6) has a variable cross-section structure from square to round from top to bottom.

5. The dustproof device for the side bearing of a railway freight car according to claim 4, characterized in that: The dust cover (6) has multiple arcs that gradually transition smoothly from top to bottom, which is used to reduce the air resistance of the dust cover when the vehicle is running.

6. The dustproof device for the side bearing of a railway freight car according to claim 5, characterized in that: There is a large gap between the inner wall of the dust cover (6) and the upper side support (1) or the lower side support (9) inside.

7. The dustproof device for the side bearing of a railway freight car according to claim 6, characterized in that: The dust cover (6) is made of neoprene rubber.

8. The dustproof device for the side bearing of a railway freight car according to claim 1, characterized in that: The adjusting pad (3), the upper mounting seat (4) and the wear plate (7) are fixedly connected to the upper side support assembly (1) by bolts (2); the lower side support assembly (9), the lower mounting seat (8) and the bolster (10) are fixedly connected to the lower side support assembly (9) by bolts (2).

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