CN109808420B

CN109808420B - Monorail train and horizontal axle assembly and horizontal axle thereof

Info

Publication number: CN109808420B
Application number: CN201711157350.9A
Authority: CN
Inventors: 李思; 奉起华; 刘辉跃
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-11-20
Filing date: 2017-11-20
Publication date: 2020-05-15
Anticipated expiration: 2037-11-20
Also published as: CN109808420A; CN111152605B; CN111152605A

Abstract

The invention discloses a monorail train, a horizontal axle assembly and a horizontal axle shaft of the monorail train, wherein the horizontal axle shaft extends vertically, the horizontal axle shaft is sequentially provided with a connecting section, a first bearing mounting section and a second bearing mounting section from top to bottom, an oil outlet is formed in the outer peripheral surface of the horizontal axle shaft, the oil outlet is arranged at a position not lower than the first bearing mounting section, an oil filling port is arranged on the lower end surface of the horizontal axle shaft, and the oil outlet is communicated with the oil filling port. According to the horizontal axle for the monorail train, the oil outlet is formed in the position, not lower than the first bearing mounting section, on the outer peripheral surface of the horizontal axle, so that an effective amount of lubricant can be guaranteed to be injected into the first bearing; meanwhile, the oil filling port is formed in the lower end face of the horizontal wheel shaft, so that the horizontal wheel does not need to be detached when lubricant needs to be injected, and the operation is simple and convenient.

Description

Monorail train and horizontal axle assembly and horizontal axle thereof

Technical Field

The invention relates to the technical field of railway vehicles, in particular to a horizontal wheel shaft for a monorail train, a horizontal wheel shaft assembly for the monorail train and the monorail train with the horizontal wheel shaft assembly.

Background

The wheel rim comprises a spoke, the spoke is connected with a wheel hub through bolts, a sealing seat and a basin-shaped sealing cover are respectively packaged at two ends of the wheel hub through bolts, a convex nozzle extends from the outer end of the sealing seat and is inserted into an inner annular groove of the sealing cover, upper and lower rolling bearings with spaced bushings are mounted in a central hole of the wheel hub, one side of the wheel rim seat extends outwards to form a disc-shaped wheel rim, an auxiliary wheel parallel to the tire is fixed on the disc rim of the disc-shaped wheel rim through bolts, the outer diameter of the auxiliary wheel is smaller than the outer diameter of the inflated tire, and a wheel rim locking ring is mounted on the other side of the wheel rim seat to axially fix the tire.

However, the horizontal wheel for the monorail train is provided with an oil filling hole on the upper side of the horizontal wheel hub due to the structure, the horizontal wheel is wrapped by the carriage under normal conditions, the space between the horizontal wheel and the bottom of the train chassis is small during maintenance and oil filling, the oil filling difficulty is extremely high, and the horizontal wheel is detached from the bogie to complete the oil filling of the upper bearing when necessary.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, the invention proposes a horizontal axle for monorail trains, which is simple in structure and allows the lubrication grease to be conveniently and efficiently injected into the bearings.

The invention also provides a horizontal axle assembly for the monorail train, which is provided with the horizontal axle.

A third aspect of the invention is to provide a monorail car having the above-described horizontal axle assembly.

According to the horizontal wheel shaft for the monorail train in the first aspect of the invention, the horizontal wheel shaft extends vertically, the horizontal wheel shaft is sequentially provided with the connecting section, the first bearing mounting section and the second bearing mounting section from top to bottom, an oil outlet is formed in the outer peripheral surface of the horizontal wheel shaft, the oil outlet is arranged at a position not lower than the first bearing mounting section, an oil filling port is arranged on the lower end surface of the horizontal wheel shaft, and the oil outlet is communicated with the oil filling port.

According to the horizontal axle for the monorail train, the oil outlet is formed in the position, not lower than the first bearing mounting section, on the outer peripheral surface of the horizontal axle, so that an effective amount of lubricant can be guaranteed to be injected into the first bearing; meanwhile, the oil filling port is formed in the lower end face of the horizontal wheel shaft, so that the horizontal wheel does not need to be detached when lubricant needs to be injected, and the operation is simple and convenient.

In some embodiments, the oil outlet comprises a first oil outlet provided above the first bearing mounting section and a second oil outlet provided between the first bearing mounting section and the second bearing mounting section.

In some embodiments, the first oil outlet and the second oil outlet have an included angle of 90 degrees therebetween in a projection plane perpendicular to the horizontal axle axis.

In some embodiments, the horizontal axle has therein: the oil injection channel extends along the axis of the horizontal wheel shaft, and the lower end of the oil injection channel penetrates through the lower end face of the horizontal wheel shaft to form the oil injection port; the oil outlet channel extends along the radial direction of the horizontal wheel shaft, the oil outlet channel is communicated with the oil injection channel, and two ends of the oil outlet channel penetrate through the peripheral surface of the horizontal wheel shaft to form the oil outlet.

In some embodiments, a mounting groove for mounting a waterproof cover is provided above the first bearing mounting section, and the oil outlet is lower than the mounting groove.

In some embodiments, the connecting section is provided with a bolt connecting hole and a positioning boss.

In some embodiments, at least one bolt connecting hole is arranged above and below the positioning boss.

In some embodiments, the horizontal cross section of the connecting section perpendicular to the axial direction thereof is substantially square, and the positioning boss is in the shape of an elongated bar extending in the horizontal direction.

In some embodiments, the lower end of the connecting section has an annular flange.

In some embodiments, the oil filling port of the horizontal axle is provided with a plug, and the plug is internally provided with a vent hole.

According to a second aspect of the invention, a horizontal axle assembly for a monorail train comprises: a horizontal axle for a monorail train according to the first aspect of the present invention; the first bearing is sleeved on the first bearing mounting section; the second bearing is sleeved on the second bearing mounting section; the wheel hub is sleeved on the outer sides of the first bearing and the second bearing; the upper sealing cover surrounds the horizontal wheel shaft and covers the upper end of the wheel hub; and the lower sealing cover is covered at the lower end of the hub.

According to the horizontal axle assembly for the monorail train, the horizontal axle assembly for the monorail train is provided with the horizontal axle of the first aspect, so that the overall performance of the horizontal axle assembly for the monorail train is improved.

In some embodiments, the horizontal axle assembly further comprises: the oil deflector ring is arranged on the horizontal wheel shaft in a sealing manner and is higher than the first bearing in a sealing manner, an oil guide groove penetrating through the inner circumferential surface of the oil deflector ring is formed in the lower surface of the oil deflector ring, an oil outlet opposite to the oil guide groove in the horizontal direction is formed in the horizontal wheel shaft, and an oil outlet groove communicated with the oil guide groove and extending to the upper side of a rolling body of the first bearing in the radial direction is formed in the lower surface of the oil deflector ring.

In some embodiments, the horizontal axle assembly further comprises: the oil baffle ring surrounds the horizontal wheel shaft, is located between the first bearing and the second bearing, and an oil storage groove is formed in the upper surface of the oil baffle ring, and a gap is formed between the inner surface of the oil baffle ring and the outer surface of the horizontal wheel shaft.

In some embodiments, an oil outlet horizontally opposite to the inner circumferential surface of the oil deflector is formed on the horizontal wheel shaft, and at least one oil guide groove is formed on the inner surface of the oil deflector.

In some embodiments, the horizontal axle assembly further comprises: and the waterproof cover is arranged on the horizontal wheel shaft and covers the upper end of the upper sealing cover.

In some embodiments, the waterproof cover has a weft notch thereon, the weft notch axially cuts the waterproof cover, and the waterproof cover is secured by a driveable hose hoop.

In some embodiments, the hub has a bearing shoulder formed on an inner surface thereof, the bearing shoulder being located between the outer race of the first bearing and the outer race of the second bearing, the bearing shoulder being for locating the outer race of the first bearing and the outer race of the second bearing.

In some embodiments, a locking assembly for locking an inner race of the second bearing is connected to a lower end of the horizontal axle, the locking assembly comprising: the locking nut is in threaded connection with the horizontal wheel shaft; at least one locking washer surrounding the horizontal axle; the outer peripheral surface of the lower end of the horizontal wheel shaft is provided with a key groove extending along the axial direction, and at least one locking washer is fixed relative to the locking nut and is provided with a support lug inserted into the key groove.

In some embodiments, the locking washer is disposed above and below the locking nut.

In some embodiments, the outer circumferential surface of the hub is provided with a plurality of water pouring grooves extending from top to bottom, and the water pouring grooves are arranged at intervals along the circumferential direction of the hub.

In some embodiments, a downwardly projecting safety wheel positioning shoulder is provided on the lower end face of the hub, the safety wheel positioning shoulder being annular extending in the circumferential direction of the hub.

In some embodiments, the safety wheel locating shoulder is formed with an annular groove extending in a circumferential direction of the hub.

A monorail car according to a third aspect of the present invention comprises a horizontal axle assembly for a monorail car according to the second aspect of the present invention.

According to the monorail train provided by the invention, the horizontal axle assembly for the monorail train of the second aspect is arranged, so that the overall performance of the monorail train is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a horizontal axle assembly for a monorail car in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a horizontal axle for the monorail train shown in FIG. 1;

FIG. 3 is a schematic view of the slinger shown in FIG. 1 with arrows pointing in the direction of lubricant flow;

FIG. 4 is a schematic view of the oil deflector shown in FIG. 1, with arrows pointing in the direction of lubricant flow;

FIG. 5 is a schematic view of the waterproof cover shown in FIG. 1;

FIG. 6 is a schematic view of the assembly of the waterproof cover shown in FIG. 1 with a horizontal axle;

FIG. 7 is a schematic view of the hub shown in FIG. 1.

Reference numerals:

the horizontal axle assembly 100 is shown as having,

the horizontal wheel shaft 1, the connecting section 11, the bolt connecting hole 111, the positioning boss 112, the annular flange 113,

the first bearing mounting section 12, the mounting groove 121, the second bearing mounting section 13,

a first oil outlet 101a, a second oil outlet 101b, an oil filling port 102, an oil filling passage 103, an oil outlet passage 104,

the length of the plug 14, the key slot 15,

the first bearing 2, the second bearing 3,

hub 4, bearing shoulder 41, water pouring channel 42, safety wheel positioning shoulder 43, annular groove 431,

the upper cap 51, the lower cap 52, the packing 521,

an oil retainer 6, an oil guide groove 61, an oil outlet groove 62,

an oil baffle ring 7, an oil storage groove 71, an oil guide groove 72, an oil baffle boss 73,

a waterproof cover 8, a weft port 81, a driving hose hoop 82, a mounting boss 83,

locking assembly 9, inner locking washer 91, locking nut 92, outer locking washer 93, screw 94.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

First, a horizontal axle assembly 100 for a monorail train according to a second aspect of the present invention will be briefly described with reference to fig. 1-7, said horizontal axle assembly 100 comprising a horizontal axle 1 for a monorail train according to an embodiment of the first aspect of the present invention.

The horizontal axle assembly 100 for a monorail train according to an embodiment of the present invention comprises: horizontal wheel axle 1, first bearing 2, second bearing 3, wheel hub 4, upper cover 51 and lower cover 52.

As shown in fig. 1, the horizontal axle 1 extends in the up-down direction shown in fig. 1, the horizontal axle 1 sequentially has a connecting section 11, a first bearing mounting section 12 and a second bearing mounting section 13 from top to bottom, and the first bearing 2 is sleeved on the first bearing mounting section 12; the second bearing 3 is fitted over the second bearing installation section 13 such that the first bearing 2 is located above the second bearing 3 in the up-down direction of fig. 1. The hub 4 is sleeved on the outer sides of the first bearing 2 and the second bearing 3; the upper sealing cover 51 surrounds the horizontal wheel shaft 1 and is sealed at the upper end of the wheel hub 4; the lower cover 52 covers the lower end of the hub 4. At this time, the upper cover 51, the hub 4, and the lower cover 52 have an installation space therebetween, and the first bearing 2 and the second bearing 3 are all installed in the installation space.

An oil outlet (for example, a first oil outlet 101a and a second oil outlet 101b described below) is formed on the outer peripheral surface of the horizontal axle 1, and the horizontal axle 1 is provided with an oil outlet (for example, a first oil outlet 101a described below) at a position not lower than the first bearing mounting section 12, and an oil filling port 102 is provided on the lower end surface of the horizontal axle 1, the oil outlet communicating with the oil filling port 102. During the process of filling oil (lubricant) into the horizontal axle assembly 100, the lubricant enters the horizontal axle 1 from the oil filling port 102 and then flows out from the oil outlet (first oil outlet 101a), and since the oil outlet (first oil outlet 101a) is provided at a position not lower than the first bearing mounting section 12, the lubricant flowing out from the oil outlet (first oil outlet 101a) can be injected into the first bearing 2 mounted to the first bearing mounting section 12; simultaneously because first bearing 2 is located the top of second bearing 3, consequently, under the effect of gravity, emollient can follow first bearing 2 position flow direction second bearing 3 positions to can guarantee all can fill up the grease emollient in first bearing 2 and the second bearing 3, in order to guarantee the effective lubrication to first bearing 2 and second bearing 3.

A horizontal axle 1 for a monorail train in accordance with an embodiment of the first aspect of the present invention is described below with reference to fig. 1-2.

As shown in fig. 1 and 2, a horizontal axle 1 for a monorail train according to an embodiment of the first aspect of the present invention, where the horizontal axle 1 extends in a vertical direction (for example, up and down direction shown in fig. 1), the horizontal axle 1 has a connecting section 11, a first bearing mounting section 12, and a second bearing mounting section 13 in this order from top to bottom, an oil outlet is formed on an outer peripheral surface of the horizontal axle 1, an oil outlet (a first oil outlet 101a) is provided at a position not lower than the first bearing mounting section 12, an oil filling port 102 is provided on a lower end surface of the horizontal axle 1, and the oil outlet is communicated with the oil filling port 102.

It should be noted that, in the related art, the oil outlet of the horizontal wheel axle 1 is arranged between the first bearing installation section 12 and the second bearing installation section 13, and during the process of injecting the lubricant, since the oil outlet is located below the first bearing installation section 12, it is generally not guaranteed that an effective amount of lubricant is injected into the first bearing 2, that is, the first bearing 2 is generally not filled with lubricating grease, so that effective lubrication on the first bearing 2 cannot be guaranteed, and the service life of the first bearing is affected.

In the embodiment, the oil outlet is arranged at a position not lower than the first bearing mounting section 12, so that the effective amount of lubricant can be ensured to be injected into the first bearing 2 and the second bearing 3 in the process of injecting the lubricant.

In addition, in the related art, the oil injection hole of the horizontal axle assembly 100 is usually arranged on the upper side of the wheel hub 4, however, since the horizontal wheel is normally wrapped by the carriage, when the horizontal axle assembly 100 is maintained and injected with lubricant, the distance between the horizontal wheel and the bottom of the chassis of the monorail train is small, the oil injection difficulty is very high, and therefore, the horizontal wheel must be detached from the bogie during oil injection to complete lubricant injection on the first bearing 2. The process is cumbersome.

In the embodiment, the oil filling port 102 is formed in the lower end face of the horizontal wheel shaft 1, so that the oil can be filled along the axial direction of the horizontal wheel shaft 1, the horizontal wheel does not need to be detached during oil filling, the oil filling port 102 can be directly opened to fill lubricant, and the operation is simple and convenient.

According to the horizontal axle 1 for the monorail train provided by the embodiment of the invention, the oil outlet is arranged at the position, which is not lower than the first bearing mounting section 12, on the outer peripheral surface of the horizontal axle 1, so that the effective amount of lubricant can be ensured to be injected into the first bearing 2; meanwhile, the oil filling port 102 is arranged on the lower end face of the horizontal wheel shaft 1, so that the horizontal wheel does not need to be detached when lubricant needs to be filled, and the operation is simple and convenient.

In some embodiments of the invention, as shown in fig. 1 and 2, the horizontal axle 1 may have therein: an oil filling passage 103 and an oil outlet passage 104, wherein the oil filling passage 103 extends along the axis of the horizontal hub 1 (e.g., the up-down direction shown in fig. 1), and the lower end of the oil filling passage 103 penetrates the lower end surface of the horizontal hub 1 to form an oil filling port 102.

Further, the oil outlet passage 104 extends in the radial direction of the horizontal axle 1, the oil outlet passage 104 is communicated with the oil filling passage 103, and both ends of the oil outlet passage 104 penetrate through the circumferential surface of the horizontal axle 1 to form an oil outlet. For example, the inner tube of the oil outlet passage 104 communicates with the oil filling passage, and the outer end of the oil outlet passage penetrates the outer circumferential surface of the horizontal axle; or both ends of the oil outlet channel penetrate through the peripheral surface of the horizontal wheel shaft, and the middle part of the oil outlet channel is communicated with the oil injection channel.

In one embodiment of the present invention, as shown in fig. 1 and 2, an oil outlet is provided above the first bearing mounting section 12 and between the first bearing mounting section 12 and the second bearing mounting section 13. In other words, the oil outlet includes a first oil outlet 101a provided above the first bearing mounting section 12 and a second oil outlet 101b located between the first bearing mounting section 12 and the second bearing mounting section 13.

As shown in fig. 2, a first oil outlet 101a and a second oil outlet 101b spaced apart from each other in the vertical direction are disposed on the outer peripheral surface of the horizontal axle 1, wherein the first oil outlet 101a is located above the first bearing mounting section 12, and the second oil outlet 101b is located between the first bearing mounting section 12 and the second bearing mounting section 13. In the embodiment, oil outlets are arranged above the first bearing mounting section 12 and between the first bearing mounting section 12 and the second bearing mounting section 13, so that in the process of injecting the lubricant, a user can select a proper oil filling port 102 according to actual needs, and the applicability is improved.

Further, as shown in fig. 2, in a projection plane perpendicular to the axis of the horizontal wheel axle 1, an oil outlet higher than the first bearing mounting section 12 (e.g., a first oil outlet 101a shown in fig. 2) and an oil outlet between the first bearing mounting section 12 and the second bearing mounting section 13 (e.g., a second oil outlet 101b shown in fig. 2) have an included angle of 90 degrees therebetween. In other words, in a projection plane perpendicular to the axis of the horizontal axle 1, the first oil outlet and the second oil outlet have an included angle of 90 degrees therebetween. In this way, the two oil outlets are staggered in the circumferential direction along the horizontal wheel shaft 1, and when the user selects to fill the oil outlet (the first oil outlet 101a) higher than the first bearing mounting section 12 with lubricant, the oil outlet (the second oil outlet 101b) between the first bearing mounting section 12 and the second bearing mounting section 13 may be closed by other means (for example, an oil deflector 7 described below), so that the user can select different oil outlets to fill with lubricant conveniently.

As shown in fig. 2, the first oil outlet 101a and the second oil outlet 101b have a 90-degree included angle therebetween in the circumferential direction of the horizontal axle 1. The horizontal wheel shaft 1 is sleeved with an oil baffle ring 7 opposite to the second oil outlet 101b, the oil baffle ring 7 can rotate relative to the circumferential direction of the horizontal wheel shaft 1 to open or close the second oil outlet 101b, when a user selects the first oil outlet 101a to fill oil to the first bearing 2 and the second bearing 3, the oil baffle ring 7 can rotate relative to the second oil outlet 101b to close the second oil outlet 101b, at the moment, lubricant filled from the oil filling port 102 flows to the first oil outlet 101a through the oil filling channel and the oil outlet channel, and the first bearing 2 and the second bearing 3 are filled with oil through the first oil outlet 101 a. When the user selects the second outlet port 101b to fill the first bearing 2 and the second bearing 3 with oil, the oil deflector 7 is turned to open the second outlet port 101b, at which time the lubricant injected from the oil filling port 102 is injected into the first bearing 2 and the second bearing 3 through the second outlet port 101 b. Since the second outlet 101b is lower than the first outlet 101a, when the lubricant flows to the second outlet 101b, the lubricant does not flow to the first outlet 101a due to gravity and the effect of the second outlet 101b for pressure relief.

In some embodiments of the present invention, as shown in fig. 1, the horizontal axle assembly 100 may further include: and the waterproof cover 8 is arranged on the horizontal wheel shaft 1, and the waterproof cover 8 covers the upper end of the upper sealing cover 51. Thus, the waterproof cover 8 can cover the position of the connection contact between the upper sealing cover 51 and the peripheral wall surface of the horizontal wheel shaft 1, external rainwater is blocked outside, the external rainwater is prevented from splashing or flowing into the space between the upper sealing cover and the peripheral wall surface of the horizontal wheel shaft 1, and rainwater or impurities and the like are prevented from entering the first bearing 2 and the second bearing 3 through gaps and polluting lubricants in the first bearing 2 and the second bearing 3.

In some examples, as shown in fig. 1 and 2, a mounting groove 121 for mounting the waterproof cover 8 is provided above the first bearing mounting section 12, and the oil outlet is lower than the mounting groove 121. Thereby, it is possible to facilitate the installation of the waterproof cover 8 of the horizontal axle assembly 100.

Specifically, as shown in fig. 1 and 6, an inwardly protruding mounting boss 83 is provided on an inner circumferential surface of an upper end of the waterproof cover 8, a mounting groove 121 is provided above the first bearing mounting section 12, and the mounting boss 83 is snapped into the mounting groove 121. Therefore, the sealing contact area between the waterproof cover 8 and the horizontal wheel shaft 1 can be increased, labyrinth seal is formed, the sealing performance is improved, and the waterproof performance of the waterproof cover 8 is enhanced.

Further, as shown in fig. 5, the waterproof cover 8 is formed in an annular cover shape extending in the circumferential direction of the horizontal axle 1, and the inner diameter of the upper end of the waterproof cover 8 is smaller than the inner diameter of the lower end of the waterproof cover 8. The waterproof cover 8 has a weft notch 81, and the weft notch 81 cuts the waterproof cover 8 in the axial direction (for example, the vertical direction in the drawing), and the waterproof cover 8 is fixed by a driving hose hoop 82. In the installation process, the waterproof cover 8 can be sleeved on the horizontal wheel shaft 1, and the transmission type hose hoop 82 is used for tightly hooping the waterproof cover 8, so that the installation is convenient, and the connection reliability and the sealing performance between the waterproof cover 8 and the horizontal wheel shaft 1 are improved. Here, "weft port" means: the waterproof cover 8 is formed in a ring shape having a notch that penetrates from one end to the other end in the axial direction of the waterproof cover, and at this time, a gap between both ends of the waterproof cover in the circumferential direction is formed as the weft port.

In some embodiments of the present invention, as shown in fig. 2, the connecting section 11 is provided with a bolt connecting hole 111 and a positioning boss 112. The positioning boss 112 is used for positioning with the bogie in the process of mounting the horizontal axle assembly 100, and the bolt connecting hole 111 is used for fixedly connecting the horizontal axle 1 with the bogie. In the installation process, the horizontal wheel shaft 1 is firstly positioned on the bogie by the positioning boss 112, and then the horizontal wheel shaft 1 and the bogie are connected together by the threaded connecting piece penetrating through the bolt connecting hole 111, so that the assembly efficiency can be improved. Meanwhile, the positioning boss 112 can also play a role in supporting the horizontal axle assembly 100 in the positioning process, so that the convenience of assembly is enhanced.

Preferably, as shown in fig. 2, at least one bolt coupling hole 111 is provided above and below the positioning boss 112. Specifically, the positioning boss 112 extends from one side to the other side of the connecting section 11 in the width direction, at least two bolt connecting holes 111 are arranged above the positioning boss 112 at intervals, and at least two bolt connecting holes 111 are also arranged below the positioning boss 112 at intervals. This embodiment all sets up bolt connection hole 111 through the top and the below at location boss 112, and the top and the below of location boss 112 all can link to each other with the bogie through threaded connection spare like this, from this, can improve the reliability of connecting, avoids horizontal shaft 1 skew.

In some embodiments of the present invention, as shown in fig. 2, the horizontal cross-section of the connecting section 11 perpendicular to the axial direction thereof is substantially square, and the positioning boss 112 has an elongated shape extending in the horizontal direction. For example, the connecting segment 11 may be formed in a column shape extending in the vertical direction and having a square cross section, the positioning boss 112 may be formed in an elongated shape formed on one side wall of the connecting segment 11, and the extending direction of the positioning boss 112 is horizontal. Therefore, the positioning boss 112 can support the horizontal wheel shaft 1 conveniently in the positioning process, and assembly is facilitated.

In some embodiments of the invention, as shown in fig. 1 and 2, the lower end of the connecting section 11 has an annular flange 113. The annular flange 113 effectively spaces the connecting section 11 from the first bearing mounting section 12 to avoid interference with the waterproof cover 8, hub 4, etc. mounted on the first bearing mounting section 12 when the connecting section 11 is assembled with the bogie.

In some embodiments of the invention, the filler point 102 of the horizontal axle 1 is provided with a plug 14, and the plug 14 has a vent hole therein. Therefore, oil can be injected conveniently, and oil leakage can be prevented. For example, in some examples, the oil filler opening 102 of the horizontal axle 1 is provided with a nipple for filling oil.

In some embodiments of the present invention, as shown in fig. 1 and 3, the horizontal axle assembly 100 may further include: the oil slinger 6 is sleeved on the horizontal wheel shaft 1 in a sealing mode, namely the inner surface of the oil slinger 6 is connected with the peripheral wall surface of the horizontal wheel shaft 1 in a sealing mode, and oil is prevented from leaking from a gap between the oil slinger 6 and the horizontal wheel shaft 1.

Further, the oil slinger 6 is located higher than the first bearing 2 in the vertical direction, an oil guiding groove 61 penetrating through the inner circumferential surface of the oil slinger 6 is formed on the lower surface of the oil slinger 6, an oil outlet (a first oil outlet 101a) horizontally opposite to the oil guiding groove 61 is formed on the horizontal wheel shaft 1, and an oil outlet groove 62 communicating with the oil guiding groove 61 and extending radially above the rolling elements of the first bearing 2 is formed on the lower surface of the oil slinger 6. In the process of injecting the lubricant, the lubricant flowing out from the oil outlet enters the oil guide groove 61 horizontally opposite to the oil outlet, and the lubricant in the oil guide groove 61 flows to the upper part of the rolling element of the first bearing 2 through the oil outlet groove 62 and then flows into the rolling element of the first bearing 2 to lubricate the first bearing 2.

Wherein, the oil outlet groove 62 includes a plurality of grooves arranged at intervals along the circumferential direction of the oil guide groove 61.

In some embodiments of the present invention, as shown in fig. 1 in combination with fig. 4, the horizontal axle assembly 100 may further include: the oil retaining ring 7 is arranged on the horizontal wheel shaft 1 in a surrounding mode, the oil retaining ring 7 is located between the first bearing 2 and the second bearing 3, an oil storage groove 71 is formed in the upper surface of the oil retaining ring 7, and a gap is formed between the inner surface of the oil retaining ring 7 and the outer surface of the horizontal wheel shaft 1.

As shown in fig. 1, the oil deflector 7 is sleeved on the outer side of the horizontal wheel axle 1, and a gap is formed between the inner surface of the oil deflector 7 and the outer surface of the horizontal wheel axle 1, so that when lubricant is injected through the first oil outlet 101a, the lubricant flowing down from the first bearing 2 can flow to the second bearing 3 through the gap between the oil deflector 7 and the horizontal wheel axle 1 under the action of gravity, so as to lubricate the second bearing 3.

Here, it should be noted that the first bearing 2 and the second bearing 3 are both tapered roller bearings, and the first bearing 2 and the second bearing 3 are disposed facing away from each other. In the process of the operation of the horizontal axle assembly 100, because the oil baffle ring 7 has the oil storage groove 71 on the upper surface, when the oil baffle ring 7 rotates, the lubricant in the oil storage groove 71 can be thrown upwards due to the action of centrifugal force, and the first bearing 2 can be lubricated in a supplementary manner. This effectively prevents the lubricant from flowing entirely to the second bearing 3 under the gravity of gravity and affecting the lubrication of the first bearing 2.

Further, as shown in fig. 4, an oil outlet (a second oil outlet 101b) horizontally opposed to the inner peripheral surface of the oil deflector 7 is formed on the horizontal axle 1, and at least one oil guide groove 72 is formed on the inner surface of the oil deflector 7. When the oil guide groove 72 on the oil deflector 7 opposes the oil outlet, the lubricant in the second oil outlet 101b can flow out to fill the first bearing 2 and the second bearing 3 for lubrication, and when the oil guide groove 72 opposes the second oil outlet 101b, the lubricant in the oil filling passage 103 cannot flow out through the second oil outlet 101 b. Thus, by rotating the oil deflector 7, whether the second oil outlet 101b communicates with the oil guide groove 72 or not is switched, and the second oil outlet 101b can be opened or closed, whereby it is possible to select different oil outlets to inject the lubricant.

In some embodiments of the invention, as shown in fig. 1 and 7, the inner surface of the hub 4 may have a bearing shoulder 41 formed thereon, the bearing shoulder 41 being located between the outer race of the first bearing 2 and the outer race of the second bearing 3, the bearing shoulder 41 being used to locate the outer race of the first bearing 2 and the outer race of the second bearing 3. Therefore, the bearing shoulder 41 can play a limiting effect on the outer rings of the first bearing 2 and the second bearing 3, and the first bearing 2 and the second bearing 3 are prevented from moving along the axial direction.

In addition, by providing one bearing shoulder 41 for positioning the first bearing 2 and the second bearing 3 at the same time, the distance between the first bearing 2 and the second bearing 3 can be shortened, the installation space can be reduced, and the cost can be reduced.

Since there are grooves above the spokes of the hub 4, which are prone to water accumulation, and this can cause corrosion of the rim of the hub 4 and its connecting parts, in some embodiments of the present invention, as shown in fig. 7, there are provided water pouring grooves 42 extending from top to bottom on the outer circumferential surface of the hub 4, and the water pouring grooves 42 are a plurality of grooves arranged at intervals along the circumferential direction of the hub 4. This embodiment is through setting up water pouring tank 42, can be with the ponding discharge on the wheel hub 4 spoke, avoids its corruption connecting piece and rim.

In some embodiments of the invention, as shown in fig. 7, the lower end surface of the hub 4 is provided with a safety wheel positioning shoulder 43 protruding downward, and the safety wheel positioning shoulder 43 has an annular shape extending in the circumferential direction of the hub 4. Therefore, the safety wheel can be conveniently positioned and installed. In addition, the rim of the hub 4 and the rim of the safety wheel can be arranged in a split manner, so that the structure is simplified, and the cost is reduced.

Further, as shown in fig. 7, the safety wheel positioning shoulder 43 is formed with an annular groove 431 extending in the circumferential direction of the hub 4. The annular groove 431 can be provided with a sealing gasket, and a better sealing effect can be achieved through the matching of the sealing gasket and the annular groove 431.

In some embodiments of the present invention, as shown in fig. 1, a locking assembly 9 for locking an inner race of the second bearing 3 is connected to a lower end of the horizontal axle 1, the locking assembly 9 is used for limiting a downward displacement of the inner race of the second bearing 3, wherein the locking assembly 9 comprises: the locking nut 92 and at least one locking washer, the locking nut 92 is in threaded connection with the horizontal wheel shaft 1; the locking washer surrounds the horizontal axle 1.

Further, a key groove 15 extending in the axial direction is formed on the outer peripheral surface of the lower end of the horizontal hub 1, and at least one locking washer is fixed to the locking nut 92 and has a lug inserted into the key groove 15. Thereby, the locking effect of the locking assembly 9 on the inner race of the second bearing 3 can be further improved.

Preferably, locking washers are provided both above and below the locking nut 92.

Specifically, as shown in fig. 1, the locking assembly 9 is composed of an inner locking washer 91, a locking nut 92 and an outer locking washer 93 assembled from top to bottom, wherein the locking nut 92 is in threaded connection with the horizontal axle 1, radially protruding lugs are arranged on the inner locking washer 91 and the outer locking washer 93, the lugs are inserted into the key slots 15 of the horizontal axle 1, a threaded through hole is arranged on the locking nut 92, screw mounting holes distributed at intervals along the circumferential direction are formed on the outer locking washer 93, and the outer locking washer 93 is fixed on the locking nut 92 through the screw mounting holes and the threaded through hole by screws 94.

Compared with the structure that two hexagon nuts and a middle stop washer are used when the bearing is locked in the related technology, the stop washer adopted in the related technology is easy to lose efficacy and cause nut loosening, the bearing is easy to be damaged by abnormal sound, even the horizontal wheel is loosened and falls off in the axial direction, and serious accidents such as similar rollover are caused with relatively higher probability. And this embodiment can strengthen the locking effect through adopting a locking nut to add two locking washer cooperation locking bearings, improves stability and reliability.

A horizontal axle assembly 100 for a monorail car according to one embodiment of the present invention will now be described with reference to figures 1-7.

Referring to fig. 1, as shown in fig. 1, a horizontal axle assembly 100 for a monorail car according to an embodiment of the present invention includes: the horizontal wheel shaft 1, the first bearing 2, the second bearing 3, the wheel hub 4, the upper sealing cover 51, the lower sealing cover 52, the oil retainer 6, the oil retainer 7, the waterproof cover 8 and the locking assembly 9.

Specifically, as shown in fig. 1 and 2, the horizontal axle assembly 100 of the embodiment of the present invention is formed by axially injecting a lubricant. In particular, the horizontal wheel axle 1 has a connecting section 11, a first bearing mounting section 12 and a second bearing mounting section 13; the first bearing mounting section 12 mounts the first bearing 2 and the second bearing mounting section 13 mounts the second bearing 3.

The horizontal wheel axle 1 is provided with an oil filling port 102, a first oil outlet 101a, a second oil outlet 101b, an oil filling channel 103 and an oil outlet channel 104. The oil filling port 102 is formed on the lower end face of the horizontal axle 1, the first oil outlet 101a is located above the first bearing mount section 12, and the second oil outlet 101b is located between the first bearing mount section 12 and the second bearing mount section 13. The oil filling port 102 is communicated with the first oil outlet 101a and the second oil outlet 101b through an oil filling channel 103 and an oil outlet channel 104, and the first oil outlet 101a and the second oil outlet 101b form an included angle of 90 degrees on a horizontal working surface.

The lower end of the horizontal wheel shaft 1 is provided with a key groove 15 in the axial direction through threads, the connecting section 11 of the horizontal wheel shaft 1 is provided with four bolt connecting holes 111, one end face of the connecting section is provided with a protruding positioning boss 112, and a waterproof cover mounting groove 121 is arranged above the first bearing mounting section 12.

The waterproof cover 8 is fixed at the installation groove 121 of the waterproof cover 8 of the horizontal wheel shaft 1 through a transmission type hose hoop 82; specifically, the waterproof cover 8 is locked in the waterproof cover 8 mounting groove 121 by the driving hose hoop 82. The waterproof cover 8 adopts a bottleneck shape, an inward convex mounting boss 83 arranged at the bottleneck position at the upper end of the waterproof cover 8 is clamped in a waterproof cover 8 mounting groove 121 of the horizontal wheel shaft 1, and a weft port 81 is arranged on the end surface of the waterproof cover 8 to facilitate mounting of the waterproof cover 8. The waterproof cover 8 is made of waterproof engineering plastic materials which have certain strength and are not easy to age.

The upper and lower end faces of the hub 4 are respectively provided with an upper sealing cover 51 and a lower sealing cover 52, and a gasket 521 is arranged between the lower sealing cover 52 and the lower end face of the hub 4.

A bearing shoulder 41 is arranged in the middle of the inner circumferential surface of the hub 4, and a water pouring groove 42 from top to bottom is arranged on the side surface of the hub 4, so that water accumulation on the hub 4 and a rim groove of the horizontal wheel is avoided. The lower terminal surface of wheel hub 4 sets up safety wheel location circular bead 43, and safety wheel location circular bead 43 outer terminal surface is equipped with annular groove 431, and the sealed 521 circle of end surface cooperation packing that is equipped with annular groove 431 can be better plays sealed effect.

The outer ring of the first bearing 2 and the outer ring of the second bearing 3 are both arranged on the inner side of a wheel hub 4, the upper end of the outer ring of the second bearing 3 abuts against a bearing shoulder 41 on the inner circumferential surface of the wheel hub 4, the inner ring of the first bearing 2 and the inner ring of the second bearing 3 are both arranged on a horizontal wheel shaft 1, an oil baffle ring 7 is arranged between the lower end surface of the inner ring of the first bearing 2 and the bearing shoulder 41, an inner locking washer 91, a locking nut 92 and an outer locking washer 93 are arranged on the lower end surface of the second bearing 3 from top to bottom, lugs are arranged on the inner sides of the inner locking washer 91 and the outer locking washer 93 and clamped in a key groove 15 of the horizontal wheel shaft 1, a threaded through hole is formed in the end surface of the locking nut 92, uniformly distributed screw mounting holes are formed.

As shown in fig. 3, the horizontal wheel axle 1 is provided with a slinger 6 which is connected with the horizontal wheel axle 1 in a sealing way, and the slinger 6 is positioned above the first bearing 2. Specifically, the lower end surface of the oil slinger 6 is provided with four oil outlet grooves 62 which are uniformly distributed, the inner side of the oil slinger 6 is provided with an oil guide groove 61 which extends along the circumferential direction and penetrates through the inner wall surface of the oil slinger 6, and the four oil outlet grooves 62 are connected with the inner oil guide groove 61 one by one. In operation, the lubricant flows into the oil guiding groove 61 in the oil slinger 6 through the first oil outlet 101a of the horizontal wheel axle 1, and flows out from the oil outlet groove 62 into the rolling bodies of the first bearing 2 under continuous oil pressure, so as to lubricate the bearing.

As shown in fig. 4, an oil baffle ring 7 is arranged on the horizontal wheel shaft 1, the oil baffle ring 7 is positioned between the first bearing 2 and the second bearing 3, an oil storage groove 71 is arranged on the upper surface of the inner ring of the oil baffle ring 7, oil guide grooves 72 which are oppositely arranged are formed on the inner surface of the oil baffle ring 7, and an oil baffle boss 73 is formed between the oil guide grooves 72. When the lubricating device works, the lubricant flows out through the second oil outlet 101b of the horizontal wheel shaft 1, when the second oil outlet 101b is opposite to the oil blocking boss 73 of the oil blocking ring 7, the lubricant cannot flow out, the lubricant flows out from the first oil outlet 101a, when the second oil outlet 101b is opposite to the oil guide groove 72 of the oil blocking ring 7, the lubricant can flow out from the second oil outlet 101b and flow into the bearing, and therefore the lubrication of the bearing is achieved.

A monorail car according to an embodiment of the third aspect of the present invention comprises a monorail car horizontal axle assembly 100 according to the above-described embodiment of the second aspect of the present invention.

According to the monorail train provided by the embodiment of the invention, the horizontal axle assembly 100 for the monorail train provided by the second aspect of the embodiment is arranged, so that the overall performance of the horizontal axle assembly 100 for the monorail train is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The horizontal wheel shaft for the monorail train is characterized in that the horizontal wheel shaft extends vertically, the horizontal wheel shaft is sequentially provided with a connecting section, a first bearing mounting section and a second bearing mounting section from top to bottom, an oil outlet is formed in the outer peripheral surface of the horizontal wheel shaft, the oil outlet is arranged at a position not lower than the first bearing mounting section, an oil filling port is formed in the lower end surface of the horizontal wheel shaft, and the oil outlet is communicated with the oil filling port;

the oil outlet comprises a first oil outlet and a second oil outlet, the first oil outlet is arranged above the first bearing mounting section, and the second oil outlet is arranged between the first bearing mounting section and the second bearing mounting section;

in a projection plane perpendicular to the horizontal axle axis, the first oil outlet and the second oil outlet have an included angle of 90 degrees therebetween.

2. The horizontal axle for a monorail train as defined in claim 1, wherein said horizontal axle has therein:

the oil injection channel extends along the axis of the horizontal wheel shaft, and the lower end of the oil injection channel penetrates through the lower end face of the horizontal wheel shaft to form the oil injection port;

the oil outlet channel extends along the radial direction of the horizontal wheel shaft, the oil outlet channel is communicated with the oil injection channel, and two ends of the oil outlet channel penetrate through the peripheral surface of the horizontal wheel shaft to form the oil outlet.

3. The horizontal axle for a monorail train as defined in claim 1, wherein a mounting groove for mounting a waterproof cover is provided above said first bearing mounting section, and said oil outlet is lower than said mounting groove.

4. The horizontal axle for a monorail train as defined in claim 1, wherein said connecting section is provided with a bolt attachment hole and a positioning boss.

5. The horizontal axle for a monorail train of claim 4, wherein at least one of said bolt attachment holes is provided above and below said locating boss.

6. The horizontal axle for a monorail train as defined in claim 4 or 5, wherein said connecting section has a substantially square horizontal cross-section perpendicular to the axial direction thereof, and said positioning projection has a horizontally extending elongated shape.

7. The horizontal axle for a monorail train as defined in claim 1, wherein said connecting section has an annular flange at a lower end thereof.

8. The horizontal axle for a monorail train as defined in claim 1, wherein said oil injection port of said horizontal axle is provided with a plug having a vent hole therein.

9. A horizontal axle assembly for a monorail car, comprising:

a horizontal axle for a monorail train as defined in any one of claims 1-8;

the first bearing is sleeved on the first bearing mounting section;

the second bearing is sleeved on the second bearing mounting section;

the wheel hub is sleeved on the outer sides of the first bearing and the second bearing;

the upper sealing cover surrounds the horizontal wheel shaft and covers the upper end of the wheel hub;

and the lower sealing cover is covered at the lower end of the hub.

10. The horizontal axle assembly for a monorail car of claim 9, wherein said horizontal axle assembly further comprises:

the oil deflector ring is arranged on the horizontal wheel shaft in a sealing manner and is higher than the first bearing in a sealing manner, an oil guide groove penetrating through the inner circumferential surface of the oil deflector ring is formed in the lower surface of the oil deflector ring, an oil outlet opposite to the oil guide groove in the horizontal direction is formed in the horizontal wheel shaft, and an oil outlet groove communicated with the oil guide groove and extending to the upper side of a rolling body of the first bearing in the radial direction is formed in the lower surface of the oil deflector ring.

11. The horizontal axle assembly for a monorail car of claim 9, wherein said horizontal axle assembly further comprises:

the oil baffle ring surrounds the horizontal wheel shaft, is located between the first bearing and the second bearing, and an oil storage groove is formed in the upper surface of the oil baffle ring, and a gap is formed between the inner surface of the oil baffle ring and the outer surface of the horizontal wheel shaft.

12. The horizontal axle assembly for a monorail train of claim 11, wherein an oil outlet is formed in the horizontal axle in a horizontal direction opposite to the inner circumferential surface of the oil deflector, and at least one oil guide groove is formed in the inner surface of the oil deflector.

13. The horizontal axle assembly for a monorail car of claim 9, wherein said horizontal axle assembly further comprises:

and the waterproof cover is arranged on the horizontal wheel shaft and covers the upper end of the upper sealing cover.

14. The monorail car horizontal axle assembly of claim 13, wherein the waterproof cover has a weft notch thereon, said weft notch axially cuts through the waterproof cover, and said waterproof cover is secured by a live hose hoop.

15. The horizontal axle assembly for a monorail car of claim 9, wherein a bearing shoulder is formed on an inner surface of the wheel hub, the bearing shoulder being located between the outer race of the first bearing and the outer race of the second bearing, the bearing shoulder being for locating the outer races of the first bearing and the second bearing.

16. The horizontal axle assembly for a monorail car of claim 9, wherein a locking assembly for locking the inner ring of said second bearing is attached to the lower end of said horizontal axle, said locking assembly comprising:

the locking nut is in threaded connection with the horizontal wheel shaft;

at least one locking washer surrounding the horizontal axle;

the outer peripheral surface of the lower end of the horizontal wheel shaft is provided with a key groove extending along the axial direction, and at least one locking washer is fixed relative to the locking nut and is provided with a support lug inserted into the key groove.

17. The horizontal axle assembly for a monorail car of claim 16, wherein said locking washer is provided both above and below said locking nut.

18. The horizontal axle assembly for the monorail train as recited in claim 9, wherein a plurality of water pouring grooves are formed in an outer circumferential surface of the hub, the water pouring grooves extending from top to bottom, and the water pouring grooves are arranged at intervals in a circumferential direction of the hub.

19. The horizontal axle assembly for a monorail car of claim 9, wherein a downwardly projecting safety wheel locating shoulder is provided on the lower end surface of the wheel hub, said safety wheel locating shoulder being in the form of an annular ring extending in the circumferential direction of the wheel hub.

20. The horizontal axle assembly for a monorail car of claim 19, wherein said safety wheel locating shoulder is formed with an annular groove extending circumferentially of said hub.

21. A monorail car comprising a horizontal wheel assembly for a monorail car as defined in any one of claims 9-20.