CN117246361A - Straddle type single rail wheel edge driving device - Google Patents

Straddle type single rail wheel edge driving device Download PDF

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Publication number
CN117246361A
CN117246361A CN202210658204.9A CN202210658204A CN117246361A CN 117246361 A CN117246361 A CN 117246361A CN 202210658204 A CN202210658204 A CN 202210658204A CN 117246361 A CN117246361 A CN 117246361A
Authority
CN
China
Prior art keywords
driving device
gear
input end
type single
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210658204.9A
Other languages
Chinese (zh)
Inventor
周骥
石照耀
曾一鸣
魏世晨
仇文凡
司卫卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Qishuyan Institute Co Ltd
Original Assignee
CRRC Qishuyan Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Qishuyan Institute Co Ltd filed Critical CRRC Qishuyan Institute Co Ltd
Priority to CN202210658204.9A priority Critical patent/CN117246361A/en
Publication of CN117246361A publication Critical patent/CN117246361A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/03—Gearboxes; Mounting gearing therein characterised by means for reinforcing gearboxes, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The application provides a straddle type single-rail wheel edge driving device, which relates to the technical field of manufacturing of monorail vehicles and is used for being fixed on a bogie to drive a travelling wheel, and comprises a gear box, wherein the input end of the gear box is provided with a motor, the output end of the gear box is provided with a hub, and an annular gear is connected between the input end and the output end; a sun gear connected with the motor is coaxially arranged in the gear box, a planet gear is sleeved between the sun gear and the inner gear ring, and the planet gear is connected with the hub through a planet carrier; the gearbox is fixed on the bogie through the front box body of the input end, and the motor, the gearbox and the travelling wheels are coaxially arranged. Single-stage planetary gear transmission is adopted, so that transmission efficiency is effectively improved; the gear box is wholly fixed on the bogie through the front box body, and motor, gear box and travelling wheel are coaxial to be set up, reduce wheel limit drive arrangement and occupy the bogie space, solve the bulky problem of wheel limit drive arrangement. The wheel rim driving device has the advantages of compact overall structure, reasonable layout, small volume, high transmission efficiency and improvement on the overall performance of the wheel rim driving device.

Description

Straddle type single rail wheel edge driving device
Technical Field
The application relates to the technical field of monorail vehicle manufacturing, in particular to a straddle type single-rail wheel edge driving device.
Background
The straddle type monorail transportation is a typical urban rail transportation system, has the advantages of strong landform and landform adaptability, low noise, good landscapes, small turning radius, strong climbing capacity and the like, has the unique advantages of short construction period, low manufacturing cost and the like, and has obvious comprehensive advantages and wide market prospect in multi-system urban rail transportation.
The bogie driving system consists of motor and gear driver, and the input motor is longitudinally parallel to the bogie and the running wheel support shaft is transversely parallel to the bogie.
Disclosure of Invention
The embodiment of the application aims to provide a straddle type single-rail wheel edge driving device which adopts single-stage planetary gear transmission to effectively improve transmission efficiency; and the driving device occupies a bogie space by the coaxial arrangement of the motor, the gear box and the travelling wheels.
In one aspect of the embodiments of the present application, a straddle-type single rail wheel side driving device is provided, for being fixed on a bogie to drive a running wheel, including: the gear box is characterized in that a motor is arranged at the input end of the gear box, a hub is arranged at the output end of the gear box, and an annular gear is connected between the input end and the output end; a sun gear connected with the motor is coaxially arranged in the gear box, a planet wheel is sleeved between the sun gear and the inner gear ring, and the planet wheel is connected with the hub through a planet carrier; the gearbox is fixed on the bogie through the front box body of the input end, and the motor, the gearbox and the running wheels are coaxially arranged.
Optionally, a first positioning structure for positioning the motor and a second positioning structure for positioning the bogie are arranged on the input end surface of the front box body; the first positioning structure comprises a first flange surface and a first positioning spigot which are arranged on the input end surface, and the second positioning structure comprises a second flange surface and a second positioning spigot which are arranged on the input end surface.
Optionally, the second flange surface is connected with the bogie through a screw and nut, and a mounting sleeve is arranged between the nut and the bogie.
Optionally, a detachable input shaft assembly is further arranged in the gear box, the input shaft assembly comprises an input end cover arranged in the front box body and a spline housing arranged in the input end cover, and two ends of the spline housing are respectively connected with the motor and the sun gear.
Optionally, one end of the spline housing is an internal spline, the spline housing is connected with an external spline of a motor shaft of the motor through the internal spline, and the hardness of the internal spline is lower than that of the external spline of the motor shaft.
Optionally, the input shaft assembly further comprises a support bearing arranged on the periphery of the spline housing, and the spline housing is rotatably arranged in the input end cover through the support bearing.
Optionally, the input shaft assembly further comprises an overload bushing arranged between the spline housing and the sun gear, and the spline housing, the overload bushing and the sun gear have preset interference.
Optionally, the input shaft assembly further comprises a contact sealing ring arranged between the spline housing and the input end cover, the input end cover is connected with a bearing seat of the support bearing, and the bearing seat is provided with an oil collecting groove and an oil inlet hole and used for lubricating the support bearing.
Optionally, a cylindrical roller bearing is disposed on a side of the planet carrier, which is close to the input end, and a spherical roller bearing is disposed on a side of the planet carrier, which is close to the output end.
Optionally, the planet carrier with spherical roller bearing's tip is provided with location structure, location structure is including the cover in proper order establishing keep off ring, stop washer and the round nut of the periphery of planet carrier, keep off the ring with still be provided with the oil blanket between the back box of output.
Optionally, an output end cover is further arranged on one side, far away from the front box body, of the hub, the planet carrier, the hub and the output end cover form a detachable output end assembly, the planet carrier and the hub are provided with mounting rabbets, and the planet carrier and the hub are fixedly connected through a plurality of hollow pins and a plurality of bolts, wherein the hollow pins are circumferentially arranged; the hub is also provided with a mounting surface connected with the rim and a bolt and a nut for connection.
Optionally, the straddle-type single-rail wheel edge driving device is further integrated with a plurality of interfaces for external connection.
Optionally, an installation interface is arranged on the end surface of the hub, which is far away from the front box body, and is used for installing the tire pressure detection device; the front box body is provided with a temperature probe mounting hole, a breather and an oil level observation window on the input end face.
Optionally, a plurality of reinforcing ribs are circumferentially arranged on the outer walls of the front box body and the rear box body.
The straddle type single-rail wheel edge driving device comprises a gear box, wherein the gear box plays a role of an axle to bear the axle weight of a vehicle, the gear box is connected with a motor through an input end of the gear box, and the gear box can be connected with a travelling wheel through an output end of the gear box; the input end is provided with a front box body, the output end is provided with a rear box body, an annular gear is connected between the front box body and the rear box body, and the rear box body is connected with a hub; a sun gear is arranged in the gear box, the motor is connected with the sun gear, a planetary gear is sleeved between the sun gear and the inner gear ring, the planetary gear is connected with the hub through a planetary carrier, driving force is provided by the motor to drive the sun gear to rotate, and then the driving force is transmitted to an output end through the planetary gear and the planetary carrier, and the running gear is driven through the output end; in addition, the gear box is integrally fixed on the bogie through the front box body, and the motor, the gear box and the travelling wheels are coaxially arranged, so that the space occupied by the wheel edge driving device on the bogie is reduced, and the problem of large size of the wheel edge driving device is solved. The wheel driving device provided by the embodiment of the application has the advantages of compact overall structure, reasonable layout, small volume, high transmission efficiency and capability of improving the overall performance of the wheel driving device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a straddle-type single-rail wheel driving device according to the present embodiment;
FIG. 2 is a schematic diagram of a partial structure of a straddle-type single-rail wheel driving device according to the present embodiment;
FIG. 3 is a second schematic diagram of a partial structure of a straddle-type single rail wheel driving device according to the present embodiment;
FIG. 4 is a third schematic diagram of a partial structure of a straddle-type single-rail wheel driving device according to the present embodiment;
FIG. 5 is a schematic diagram of a partial structure of a straddle-type single rail wheel driving device according to the present embodiment;
FIG. 6 is a schematic diagram of a partial structure of a straddle-type single-rail wheel side driving device according to the present embodiment;
FIG. 7 is a schematic diagram of a partial structure of a straddle-type single rail wheel driving device according to the present embodiment;
FIG. 8 is a schematic diagram of a partial structure of a straddle-type single rail wheel side driving device according to the present embodiment;
fig. 9 is a second schematic structural diagram of a straddle-type single rail wheel driving device according to the present embodiment.
Icon: 1-a front box body; 1 a-a first positioning spigot; 1 b-a first flange face; 1 c-a second locating spigot; 1 d-a second flange face; 1 e-mounting holes; 2-an inner gear ring; 3-planet wheels; 4-a rear box body; 5-a planet carrier; 6-a hub; 7-a hollow pin; 8-a bolt; 9-spherical roller bearings; 10-sun gear; 11-overload bushing; 12-cylindrical roller bearings; 13-supporting bearings; 14-spline housing; 15-an input end cap; 16-bearing seats; 17-contact type sealing rings; 18-a nut; 19-mounting a sleeve; 20-framing; 21-a bolt; 22-motor; 22 a-screws; 23-an output end cap; 24-oil seal; 25-baffle ring; 26-a stop washer; 27-a round nut; 28-aerator; 29-oil level observation window; 61-mounting interface.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
It should also be noted that the terms "disposed," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically defined and limited; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, an embodiment of the present application provides a straddle type single rail wheel driving device (simply referred to as a wheel driving device) for being fixed on a bogie to drive a travelling wheel, including: the input end of the gear box is provided with a motor 22, the output end of the gear box is provided with a hub 6, and an annular gear 2 is connected between the input end and the output end; a sun gear 10 connected with a motor 22 is coaxially arranged in the gear box, a planet wheel 3 is sleeved between the sun gear 10 and the inner gear ring 2, and the planet wheel 3 is connected with a hub 6 through a planet carrier 5; the gearbox is fixed on the bogie through a front box body 1 at the input end, and the motor 22, the gearbox and the running wheels are coaxially arranged.
The wheel side driving device is a driving transmission system in a bogie, is arranged on one side of the travelling wheel, and the bogie provides installation space and installation foundation for the carriage and the installation of various mechanisms. Therefore, in use, the wheel edge driving device is fixed on the bogie, and the travelling wheel is positioned on one side of the wheel edge driving device.
Specifically, the gear box has an input end with a front box body 1 to be fixedly connected with a motor 22 to provide driving force, and an output end; the gearbox is fixedly connected to the framework 20 of the bogie through the front box body 1, and the connecting mode ensures that the wheel driving device has compact structure, convenient installation and accurate positioning. The output end is provided with a rear box body 4 to be connected with a hub 6, and the output end is connected with a running wheel. An inner gear ring 2 is connected between the input end and the output end, and a front box body 1, the inner gear ring 2 and a rear box body 4 are connected through bolts to form a fixed part of the wheel edge driving device; the sun gear 10 is coaxially arranged in the gear box, the sun gear 10 is connected with the motor 22, the planet wheel 3 is sleeved on the periphery of the sun gear 10, the planet wheel 3 is positioned in the inner ring of the inner gear ring 2, the planet wheel 3 is connected with the hub 6 through the planet carrier 5, and the sun gear 10, the planet wheel 3, the planet carrier 5 and the hub 6 form a rotating part of the wheel rim driving device. The motor 22, gearbox and running wheel are coaxially arranged to reduce the space taken up by the wheel side drive for the bogie.
In summary, the straddle type single-rail wheel edge driving device provided by the embodiment of the application comprises a gear box, wherein the gear box plays a role of an axle to bear the axle weight of a vehicle, the input end of the gear box is connected with a motor 22, and the gear box can be connected with a travelling wheel through the output end; the input end is provided with a front box body 1, the output end is provided with a rear box body 4, an annular gear 2 is connected between the front box body 1 and the rear box body 4, and the rear box body 4 is connected with a hub 6; a sun gear 10 is arranged in the gearbox, a motor 22 is connected with the sun gear 10, a planet wheel 3 is sleeved between the sun gear 10 and the annular gear 2, the planet wheel 3 is connected with a hub 6 through a planet carrier 5, driving force is provided by the motor 22 to drive the sun gear 10 to rotate, and then the driving force is transmitted to an output end through the planet wheel 3 and the planet carrier 5, and a running wheel is driven through the output end; in addition, the gear box is integrally fixed on the bogie through the front box body 1, and the motor 22, the gear box and the travelling wheels are coaxially arranged, so that the space occupied by the wheel edge driving device on the bogie is reduced, and the problem of large size of the wheel edge driving device is solved. The wheel driving device provided by the embodiment of the application has the advantages of compact overall structure, reasonable layout, small volume, high transmission efficiency and capability of improving the overall performance of the wheel driving device.
Further, a first positioning structure for positioning the motor 22 and a second positioning structure for positioning the bogie are provided on the input end face of the front case 1. Illustratively, as shown in fig. 2, the first positioning structure includes a first flange face 1b and a first positioning spigot 1a provided at the input end face, and the second positioning structure includes a second flange face 1d and a second positioning spigot 1c provided at the input end face.
Two groups of flange surfaces and positioning rabbets are formed on the input end surface of the front box body 1, and the machining precision of the positioning rabbets ensures the installation and positioning of each part; wherein the first flange surface 1b and the first positioning spigot 1a are a group for mounting and positioning the motor 22, as shown in fig. 3, the first flange surface 1b and the motor 22 are connected by a screw 22a, and the first positioning spigot 1a is used for positioning; the second flange surface 1d and the second positioning spigot 1c are a group and are used for mounting and positioning the gear box and the framework 20 of the bogie, the second flange surface 1d and the framework 20 are connected through bolts 21 and nuts 18, and the second positioning spigot 1c is positioned.
On the basis, as shown in fig. 4, a mounting sleeve 19 is arranged between the nut 18 and the bogie, and the mounting sleeve 19 between the nut 18 and the framework 20 can fully utilize the effective length of the bolt 21, is beneficial to pre-tightening the bolt 21 and is beneficial to bearing of the gearbox.
In addition, in order to be convenient for the maintenance of wheel limit drive arrangement, the input and the output of gear box pass through the modularization setting, realize the purpose that can independent dismouting, can effectively reduce product manufacturing maintenance cost under the same condition. Specifically, as shown in fig. 5, a detachable input shaft assembly is further arranged in the gear box, the input shaft assembly comprises an input end cover 15 arranged in the front box body 1 and a spline housing 14 arranged in the input end cover 15, and two ends of the spline housing 14 are respectively connected with the motor 22 and the sun gear 10. One end of the spline housing 14 is an internal spline, and the spline housing 14 is connected with an external spline of a motor 22 shaft of the motor 22 through the internal spline to transmit power.
Moreover, the hardness of the internal spline is lower than that of the external spline of the motor 22 shaft, so that the spline housing 14 is worn first if abrasion occurs, and the motor 22 shaft is protected. The other end of the spline housing 14 is a cylindrical hole to be connected with the sun gear 10 so as to drive the sun gear 10 to rotate.
The input shaft assembly further includes a support bearing 13 disposed on the outer periphery of the spline housing 14, the spline housing 14 being rotatably disposed within the input end cover 15 by the support bearing 13. The spline housing 14 is rotatably supported on the front box body 1, the supporting bearing 13 has proper bearing clearance, the floating load balancing requirement of the sun gear 10 is met, and meanwhile, the positioning of the supporting bearing 13 can ensure that the shaft of the motor 22 is aligned with the central axis of the sun gear 10.
The input shaft assembly further comprises an overload bushing 11 arranged between the spline housing 14 and the sun gear 10, wherein a preset interference magnitude is arranged among the spline housing 14, the overload bushing 11 and the sun gear 10, and the spline housing 14, the overload bushing 11 and the sun gear 10 play a role in overload protection through the proper interference magnitude.
The contact seal ring between the spline housing 14 and the input end cover 15, the input end cover 15 and the bearing seat 16 supporting the bearing 13 are connected, and the bearing seat 16 is provided with an epitaxial oil collecting groove and an oil inlet hole for lubricating the supporting bearing 13.
The spline housing 14, the sun gear 10, the overload bushing 11, the support bearing 13, the contact seal ring 17, the bearing seat 16 and the input end cover 15 form an input shaft assembly. The input shaft assembly can be independently detached from the input end of the gearbox due to abrasion of the spline housing 14 or failure of the tooth part of the input assembly or overload failure of the overload bushing 11, so that the input shaft assembly is convenient to overhaul and maintain. The input end cap 15 is independently detachable from the input shaft assembly, thereby facilitating replacement and maintenance of the contact seal ring 17.
On the other hand, the planet carrier 5 is used as a rotary bearing part and is rotatably supported on the front box body 1 and the rear box body 4 through bearings, the driving device is equivalent to an axle effect and bears a larger axle weight of the vehicle, and particularly as shown in fig. 1, one side of the planet carrier 5, which is close to the input end, is provided with a cylindrical roller bearing 12, one side of the planet carrier 5, which is close to the output end, is provided with a spherical roller bearing 9, and the driving device is structurally arranged and arranged with the bearings, so that the self-centering effect of the planet carrier 5 under a large axle weight is ensured; the front box body 1 and the rear box body 4 are circumferentially provided with a plurality of reinforcing ribs, so that the requirements of bearing a large axle weight and transmitting a large torque can be met; through the arrangement, the wheel driving device cantilever structure is formed, and the functions of supporting, positioning and automatic centering can be realized under the action of the large axle weight of the vehicle.
And the end parts of the planet carrier 5 and the spherical roller bearing 9 are also provided with a positioning structure, as shown in fig. 6, the positioning structure comprises a baffle ring 25, a stop washer 26 and a round nut 27 which are sequentially sleeved on the periphery of the planet carrier 5, and an oil seal 24 is further arranged between the baffle ring 25 and the rear box body 4 at the output end.
The positioning of the planet carrier 5 and the spherical roller bearing 9 is realized by a baffle ring 25, a round nut 27 and a stop washer 26, and the output end sealing is realized by an oil seal 24, and the oil seal 24 can be a box type oil seal 24 by way of example; the positioning and sealing functions are separated from the output end assembly. After the output end assembly is disassembled, the round nut 27, the stop washer 26, the oil seal 24 and the baffle ring 25 can be disassembled in sequence, so that the box-type oil seal 24 can be replaced conveniently. The oil seal 24, the baffle ring 25 and the rear box body 4 do not rotate relatively, so that the surface machining requirement on the rotating shaft is greatly reduced, the friction power loss is reduced, and the abrasion of the baffle ring 25 caused by long-term abrasion can be effectively avoided.
As shown in fig. 7, the wheel driving device is further provided with an output end assembly, one side of the hub 6 away from the front case 1 is further provided with an output end cover 23, the planet carrier 5, the hub 6 and the output end cover 23 form a detachable output end assembly, the planet carrier 5 and the hub 6 are provided with mounting spigots, and the mounting spigots are fixedly connected through a plurality of hollow pins 7 and a plurality of bolts 8 which are circumferentially arranged and used for bearing the axle weight of the vehicle and transmitting torque.
The planet carrier 5 is directly and fixedly connected with the hub 6 through a hollow pin 7 and a bolt 8, and the axle weight and torque of the vehicle are transmitted; the hollow pins 7 which are circumferentially arranged can realize the transmission of large torque and larger vehicle axle weight, and the bolts 8 are axially fixed, so that the structure is simple and the disassembly and the assembly are convenient.
The planet carrier 5, hub 6, hollow pins 7, bolts 8, output end cap 23 and fasteners form an output end assembly. The modularized arrangement of the input end assembly and the output end assembly can be independently disassembled and assembled, and the input end assembly and the output end assembly are integrally disassembled and replaced, so that the overhaul and the maintenance are convenient.
The hub 6 is also provided with a mounting surface for connection with the rim and a bolt and nut for connection for transmitting the rotational speed and torque of the driving device to drive the vehicle forward.
The wheel driving device is also integrated with a plurality of external interfaces, so that the system integration is high and the space is saved. Specifically, the end face of the hub 6 remote from the front case 1 is provided with a mounting interface 61 for mounting the tire pressure detecting device; as shown in fig. 8, the input end face of the front case 1 is provided with a temperature probe mounting hole 1e, a breather 28 and an oil level observation window 29, the breather 28 is used for balancing the pressure inside and outside the case, the oil level observation window 29 in fig. 9 is used for observing the oil level, preventing the oil level from being excessive or too small, affecting the oil stirring power loss and lubrication of parts in the case, resulting in too high balance temperature of the gear transmission.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (14)

1. A straddle-type single-rail wheel-side driving device for being fixed on a bogie to drive a running wheel, comprising: the gear box is characterized in that a motor is arranged at the input end of the gear box, a hub is arranged at the output end of the gear box, and an annular gear is connected between the input end and the output end; a sun gear connected with the motor is coaxially arranged in the gear box, a planet wheel is sleeved between the sun gear and the inner gear ring, and the planet wheel is connected with the hub through a planet carrier; the gearbox is fixed on the bogie through the front box body of the input end, and the motor, the gearbox and the running wheels are coaxially arranged.
2. The straddle type single-rail wheel side driving device according to claim 1, wherein a first positioning structure for positioning the motor and a second positioning structure for positioning the bogie are arranged on an input end face of the front box body;
the first positioning structure comprises a first flange surface and a first positioning spigot which are arranged on the input end surface, and the second positioning structure comprises a second flange surface and a second positioning spigot which are arranged on the input end surface.
3. The straddle type single-rail wheel side driving device according to claim 2, wherein the second flange surface is connected with the bogie through a screw fit nut, and a mounting sleeve is arranged between the nut and the bogie.
4. The straddle type single-rail wheel side driving device according to claim 1, wherein a detachable input shaft assembly is further arranged in the gear box, the input shaft assembly comprises an input end cover arranged in the front box body and a spline housing arranged in the input end cover, and two ends of the spline housing are respectively connected with the motor and the sun gear.
5. The straddle type single-rail wheel rim driving device according to claim 4, wherein one end of the spline housing is an internal spline, the spline housing is connected with an external spline of a motor shaft of the motor through the internal spline, and the hardness of the internal spline is lower than that of the external spline of the motor shaft.
6. The straddle type single rail wheel side driving apparatus according to claim 4, wherein the input shaft assembly further comprises a support bearing provided at an outer periphery of the spline housing, the spline housing being rotatably provided in the input end cover by the support bearing.
7. The straddle type single rail wheel side drive of claim 4, wherein the input shaft assembly further comprises an overload bushing disposed between the spline housing and the sun gear, the spline housing, the overload bushing and the sun gear having a predetermined interference therebetween.
8. The straddle type single rail wheel side driving device according to claim 6, wherein the input shaft assembly further comprises a contact seal ring arranged between the spline housing and the input end cover, the input end cover is connected with a bearing seat of the support bearing, and the bearing seat is provided with an oil collecting groove and an oil inlet hole for lubricating the support bearing.
9. The straddle type single-rail wheel side driving device according to claim 1, wherein a cylindrical roller bearing is arranged on one side of the planet carrier close to the input end, and a spherical roller bearing is arranged on one side of the planet carrier close to the output end.
10. The straddle type single-rail wheel rim driving device according to claim 9, wherein the end parts of the planet carrier and the spherical roller bearing are provided with positioning structures, the positioning structures comprise baffle rings, stop washers and round nuts which are sleeved on the periphery of the planet carrier in sequence, and an oil seal is further arranged between the baffle rings and a rear box body of the output end.
11. The straddle type single-rail wheel side driving device according to claim 1, wherein an output end cover is further arranged on one side, away from the front box body, of the hub, the planet carrier, the hub and the output end cover form a detachable output end assembly, the planet carrier and the hub are provided with mounting spigots, and the planet carrier and the hub are fixedly connected through a plurality of hollow pins and a plurality of bolts, wherein the hollow pins are circumferentially arranged; the hub is also provided with a mounting surface connected with the rim and a bolt and a nut for connection.
12. The straddle type single rail wheel side driving device according to claim 2, further comprising a plurality of interfaces integrated thereon for external connection.
13. The straddle type single-rail wheel side driving device according to claim 12, wherein an end surface of the wheel hub, which is far away from the front box body, is provided with a mounting interface for mounting a tire pressure detecting device; the front box body is provided with a temperature probe mounting hole, a breather and an oil level observation window on the input end face.
14. The straddle type single-rail wheel rim driving device according to claim 10, wherein a plurality of reinforcing ribs are circumferentially arranged on the outer walls of the front case and the rear case.
CN202210658204.9A 2022-06-10 2022-06-10 Straddle type single rail wheel edge driving device Pending CN117246361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210658204.9A CN117246361A (en) 2022-06-10 2022-06-10 Straddle type single rail wheel edge driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210658204.9A CN117246361A (en) 2022-06-10 2022-06-10 Straddle type single rail wheel edge driving device

Publications (1)

Publication Number Publication Date
CN117246361A true CN117246361A (en) 2023-12-19

Family

ID=89133712

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210658204.9A Pending CN117246361A (en) 2022-06-10 2022-06-10 Straddle type single rail wheel edge driving device

Country Status (1)

Country Link
CN (1) CN117246361A (en)

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