Rolling type axle box device of electric locomotive

Abstract

The utility model relates to a rolling type axle box device of an electric locomotive, which comprises an axle, a high-voltage direct-current grounding device, a bearing gland, a maintenance-free rolling bearing, a bearing outer box, a dustproof ring and a rear cover, the maintenance-free rolling bearing is arranged at the position of an axle head of the axle, and the bearing outer box is arranged outside the maintenance-free rolling bearing. The front and the back of the maintenance-free rolling bearing are positioned at the axle head of the axle through a bearing gland and a dustproof ring; a dustproof ring is arranged at the tail end of the bearing outer box, a rear cover is arranged outside the dustproof ring, the rear cover is fixed at the tail end of the bearing outer box, a labyrinth type dustproof ring is arranged at the matching position of the dustproof ring and the tail part of the rear cover, a felt ring is arranged in the dustproof ring, and a high-voltage direct-current grounding device is arranged at the end part of the shaft head. The service life is long, the original electric locomotive structure is kept unchanged, the bottom space of the axle is fully utilized, the usability is high, and the service life of the axle is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric locomotive axle box technical field especially relates to a kind of electric locomotive rolling type axle box device. BACKGROUND

[0002] On the bearing outside of electric locomotive, the component of coupling wheel pair and bogie frame car body is sleeved on axle journal, it is abbreviated axle box, its function is to pass through bearing to deliver the weight and load of car body to locomotive wheel pair, lubricate axle journal, reduce friction, reduce operating resistance.Axle box is sleeved on axle journal and bearing outside, provide load bearing.

[0003] Traditional electric locomotive axle box device is sliding bearing according to the bearing type used, sliding bearing maintenance cost is high, sliding bearing is prone to axle and bearing bush wear failure rate, sliding bearing maintenance rate is high, seriously affect production efficiency. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies of prior art, the utility model provides a kind of electric locomotive rolling type axle box device, in the case where original electric locomotive overall structure and axle space do not change, using maintenance-free rolling bearing instead of sliding bearing, without adding lubricating oil to bearing box, maintenance-free rolling bearing avoids frequent maintenance to influence production, improves bearing utilization rate, adopts labyrinth type dustproof ring to cooperate felt ring to seal bearing box, improves sealing degree, sets up high-voltage direct-current grounding device at axle head end of axle, connects high-voltage direct-current grounding device to axle end axis directly through grounding core shaft, completes conduction to rail through axle, avoids conduction through maintenance-free rolling bearing, avoids the ball of maintenance-free rolling bearing to be broken down in conduction process, improves the sense of security of use of maintenance-free rolling bearing, improves service life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kind of electric locomotive rolling type axle box device, including axle, high-voltage direct-current grounding device, bearing gland, maintenance-free rolling bearing, bearing outer box, dust ring, rear cover and wear plate, the maintenance-free rolling bearing is positioned at axle head position, and the maintenance-free rolling bearing is positioned at axle head position by bearing gland and dust ring before and after, and the dust ring is clamped and positioned at axle head shoulder, and the bearing gland is fixed at axle head end;The rear cover is fixed at the tail end of bearing outer box, and the dust ring and the tail of rear cover are matched with the position of labyrinth type dustproof ring, and the felt ring is arranged in the dustproof ring, and the high-voltage direct-current grounding device is arranged at the axle head end.

[0007] Further, the electric locomotive rolling type axle box device further includes wear plate, and the wear plate is arranged outside the bearing outer box.

[0008] Further, the high-voltage direct-current grounding device comprises a grounding core shaft and a grounding front cover, the grounding core shaft is connected at the axle shaft center, and the grounding front cover is fixed at the front end of the bearing outer box through bolts.

[0009] Further, the bearing pressure cover and the axle head end are fixed through fixing bolts, and the connecting fixing bolts are locked and sealed through a sealing lock.

[0010] Further, the bearing outer box is split type and is connected through long bolts.

[0011] Further, a gasket is arranged between the contact surface of the bearing outer box and the rear cover.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1) The maintenance-free rolling bearing replaces the sliding bearing, does not need lubricating oil, does not need maintenance, avoids the axle and tile burning failure of the electric locomotive, improves the use efficiency of the running wheel, prolongs the use time of the rolling bearing, improves the use effect of the rolling bearing, reduces the maintenance frequency of the locomotive axle box, prolongs the maintenance cycle of the electric locomotive axle box, avoids the influence of frequent maintenance on production, improves the production rate of the electric locomotive, and reduces the maintenance cost.

[0014] 2) The labyrinth type dustproof ring is adopted to prevent dust from entering the axle box, improve the sealing property of the axle box, protect the bearing from the environment, improve the use property of the bearing, prolong the service life of the bearing, improve the applicability of the axle box device, and expand the application range of the axle box.

[0015] 3) The high-voltage direct-current grounding device is arranged at the axle head end, the grounding core shaft of the high-voltage direct-current grounding device is directly connected with the axle center of the axle end, direct conduction of the axle is utilized, conduction through the rolling bearing is avoided, the rolling ball of the maintenance-free rolling bearing is prevented from being damaged by breakdown in the conduction process, the bearing is prevented from being damaged, the use safety of the maintenance-free rolling bearing is improved, and the service life of the bearing is prolonged.

[0016] 4) The wear plate is arranged between the axle box and the trolley chassis, the wear resistance of the axle box is improved, the anti-impact ability of the axle box is improved, the axle box is better protected, the service life of the axle box is prolonged, the ability of the axle box to adapt to harsh environments is improved, and the axle box has strong adaptability.

[0017] 5) The device has simple structure, simple manufacturing and installation, convenient maintenance, saves equipment cost, reduces maintenance cost, has long service life, retains the original electric locomotive structure, fully utilizes the space at the bottom of the axle, has strong use property, rolling friction replaces sliding friction transmission, and the service life of the axle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1The utility model discloses a rolling type axle box device structure schematic diagram of electric locomotive.

[0019] Fig. 2 The utility model discloses the overhead structure schematic diagram of axle box device.

[0020] Fig. 3 The utility model discloses the left view structure schematic diagram of axle box device.

[0021] In the drawing: 1. high voltage direct current grounding device;2. ground cover;3. bearing gland;4. fixed bolt;5. apply seal lock;6. washer;7. bearing outer box;8. maintenance-free rolling bearing;9. dust ring;10. gasket;11. connecting bolt;12. elastic washer;13. felt ring;14. back cover;15. mandrel;16. axle;17. labyrinth type dust ring;18. wear plate;19. countersunk bolt. DETAILED DESCRIPTION

[0022] The specific embodiment of the utility model is further explained below:

[0023] In the description of the patent, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as the limitation of the protection scope of the utility model: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0024] In order to facilitate the description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the example term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 80 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as the limitation of the protection scope of the utility model.

[0025] As shown in Figs. 1-3 The working principle of the rolling type axle box device of the electric locomotive: on the basis of the original structure of the electric locomotive, rolling type axle box devices are arranged on both sides of the axle 16, the sliding bearing in the axle box device is changed to a maintenance-free rolling bearing 8, the positioning of the maintenance-free rolling bearing 8 on the axle 16 is controlled through the bearing pressure cover 3 at the front end and the dust ring 9 at the rear end, the tail end of the bearing outer box 7 is provided with a rear cover 14, the rear cover 14 and the dust ring 9 are sealed by using the labyrinth type dustproof ring 17 and the felt ring 13, the sealing property of the axle box device is improved, the front end of the axle box device is provided with a high-voltage direct-current grounding device 1 for conducting electricity, the high-voltage direct-current grounding device 1 is fixed at the front end of the bearing outer box 7 through the grounding front cover 2, the grounding core shaft 15 of the high-voltage direct-current grounding device 1 is connected to the shaft center of the end part of the axle 16, electricity is conducted through the axle 16, the current is prevented from breaking through the maintenance-free rolling bearing 8, the rolling balls are prevented from being damaged, the maintenance-free rolling bearing 8 is prevented from being damaged, the outer side of the bearing outer box 7 is provided with an abrasion plate 18, the wear resistance and the crash resistance of the bearing outer box 7 are improved, the applicability of the bearing outer box 7 is improved, and the service life of the axle box device is improved.

[0026] As shown in Figs. 1-3 The rolling type axle box device of the electric locomotive comprises an axle 16, a high-voltage direct-current grounding device 1, a bearing pressure cover 3, a maintenance-free rolling bearing 8, a bearing outer box 7, a dust ring 9, a rear cover 14 and an abrasion plate 18, the axle head position of the axle 16 is provided with the maintenance-free rolling bearing 8, the outer side of the maintenance-free rolling bearing 8 is provided with the bearing outer box 7, the maintenance-free rolling bearing 8 is positioned at the axle head position of the axle 16 through the bearing pressure cover 3 and the dust ring 9, the dust ring 9 is clamped and positioned on the shaft shoulder connected to the axle head of the axle 16, one end of the dust ring 9 is clamped and positioned on the shaft shoulder connected to the axle head of the axle 16, the other end of the dust ring 9 is in contact with the inner ring surface of one side of the maintenance-free rolling bearing 8, the tail end of the bearing pressure cover 3 is in contact with the inner ring surface of the other side of the maintenance-free rolling bearing 8, the maintenance-free rolling bearing 8 is positioned at the outer circumference of the axle head of the axle 16 by using the bearing pressure cover 3 and the dust ring 9; the dust ring 9 is provided with the rear cover 14, the rear cover 14 is fixed at the tail end of the bearing outer box 7 by screw connection, the tail part of the dust ring 9 and the rear cover 14 is provided with the labyrinth type dustproof ring 17, the labyrinth type dustproof ring 17 is provided with the felt ring 13, the rear cover 14 is sleeved with the dust ring 9, the sleeve position is provided with the structure of the labyrinth type dustproof ring 17, the dustproof effect is improved, the labyrinth type dustproof ring 17 is provided with the felt ring 13 inside, the sealing property of the axle box device is further improved, dust is prevented from entering into the axle box, the service life of the axle box is improved, and the axle head end is provided with the high-voltage direct-current grounding device 1.

[0027] Further, the electric locomotive rolling type axle box device further comprises an abrasion plate 18 arranged outside the bearing outer box 7, the abrasion plate 18 is provided with a countersunk hole, the abrasion plate 18 and the bearing outer box 7 are connected through the countersunk bolt 19, and the abrasion plate 18 improves the wear resistance and the crash resistance of the bearing outer box 7.

[0028] Further, the high-voltage direct-current grounding device 1 comprises a grounding core 15 and a grounding front cover 2, the grounding core 15 is connected at the axle center of the axle 16, and the grounding front cover 2 is fixed at the front end of the bearing outer box 7 through bolts, the high-voltage direct-current grounding device 1 guides the current to the axle 16 through the grounding core 15, and guides the current into the rail through the axle 15 and the wheel handle, and the traditional bearing conduction structure is abandoned, because the axle 16 adopts the maintenance-free rolling bearing 8, there is a gap between the rolling balls of the maintenance-free rolling bearing 8, the conduction is easy to cause a breakdown reaction, the rolling balls are damaged, the maintenance-free rolling bearing 8 cannot be used, therefore, the axle center conduction is adopted, the maintenance-free rolling bearing 8 is prevented from conducting electricity, the rolling balls of the maintenance-free rolling bearing 8 are prevented from being damaged by breakdown, the use performance of the maintenance-free rolling bearing 8 is improved, and the use safety of the maintenance-free rolling bearing 8 is prolonged.

[0029] Further, the bearing pressure cover 3 and the axle head end of the axle 16 are fixed through the fixing bolt 4 and the gasket 6, the fixing bolt 4 is fixed and sealed through the sealing lock 5, the sealing lock 5 prevents the fixing bolt 4 from rotating and falling off, and the connection stability of the fixing bolt 4 is improved.

[0030] Further, the bearing outer box 7 is split type and is connected through long bolts, the split type bearing outer box 7 is easy to disassemble, when the maintenance-free rolling bearing 8 reaches the service life or an accident occurs, the bearing outer box 7 can be quickly disassembled, the maintenance-free rolling bearing 8 can be replaced, the maintenance work efficiency is improved, and the maintenance work time is reduced.

[0031] Further, the gasket 10 is arranged between the contact surface of the bearing outer box 7 and the rear cover 14, the gasket 10 improves the connection tightness between the bearing outer box 7 and the rear cover 14, improves the sealing performance between the bearing outer box 7 and the rear cover 14, and the bearing outer box 7, the gasket 10 and the rear cover 14 are connected and fixed through the connecting bolt 11 and the spring gasket 12.

[0032] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the conception of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A rolling axle box assembly for an electric locomotive comprising an axle, a high voltage DC electrical grounding assembly, a bearing gland, a maintenance free rolling bearing, a bearing outer box, a dust ring, a rear cover and a wear plate, characterized in that, The axle head position sets up the maintenance-free rolling bearing, the maintenance-free rolling bearing outside sets up the bearing outer box, the maintenance-free rolling bearing front and rear through the bearing gland and the dust ring positioning in the axle head position, the dust ring is clamped and positioned in the axle head shoulder, the bearing gland is fixed in the axle head end; The dust ring outside sets up the back cover, the back cover is fixed in the bearing outer box tail end, the dust ring and the back cover tail cooperate position sets up the labyrinth type dustproof ring, the dustproof ring inside sets up the felt ring, the axle head end sets up the high-voltage direct current grounding device.

2. A rolling axle box apparatus for an electric locomotive as defined in claim 1, characterized in that The electric locomotive rolling type axle box device further comprises an abrasion plate, and the abrasion plate is arranged outside the bearing outer box.

3. The rolling axle box apparatus for an electric locomotive according to claim 1, wherein The high-voltage direct current grounding device comprises a grounding core shaft and a grounding front cover, the grounding core shaft is connected with the axle shaft core, and the grounding front cover is fixed on the front end of the bearing outer box by bolts.

4. The rolling axle box apparatus for an electric locomotive according to claim 1, wherein The bearing gland and the axle head end are fixed by fixed bolts, and the fixed bolts are locked and sealed by a sealing lock.

5. The rolling axle box apparatus for an electric locomotive according to claim 1, wherein The bearing outer box is split type and connected by long bolts.

6. The rolling axle box apparatus for an electric locomotive according to claim 1, wherein A gasket is arranged between the contact surface of the bearing outer box and the back cover.

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