CN113386814A

CN113386814A - Bogie based on shaft type gear box easy to withdraw and side beam single-point suspension type motor

Info

Publication number: CN113386814A
Application number: CN202011057141.9A
Authority: CN
Inventors: 阴晓铭; 林勤; 崔冬杰; 李芬
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-09-14
Anticipated expiration: 2040-09-30
Also published as: CN113386814B

Abstract

A bogie based on an easy-to-withdraw shaft type gear box and a side beam single-point suspension type motor belongs to the field of power bogie devices of railway vehicles and comprises a framework, a wheel pair device consisting of wheels and axles, four annular vibration reduction shaft boxes, an easy-to-withdraw shaft type gear box, a side beam single-point suspension type motor, an integrated vibration reduction type swing bolster and a secondary suspension system. On the premise of ensuring the installation position and the vibration reduction index of a primary suspension axle box device, the transverse width size and the turning radius of the whole bogie are effectively reduced, so that the curve passing capacity of the bogie is further improved, and the annular vibration reduction axle box is convenient to install, disassemble and maintain; after the four fastening bolts are respectively disassembled, the side beam single-point suspension type motor can be directly and independently disassembled from the lower part of the vehicle body through the overhaul trench.

Description

Bogie based on shaft type gear box easy to withdraw and side beam single-point suspension type motor

Technical Field

The invention belongs to the field of power bogie devices of railway vehicles, and particularly relates to a bogie based on an easy-to-withdraw shaft type gear box and a side beam single-point suspension type motor.

Background

When the railway train bogie is designed, not only the structural strength of a framework serving as a bearing main body, the action effect of various auxiliary damping components such as a snake-resistant damping device and the like, the installation mode of a braking mechanism and other comprehensive factors need to be comprehensively considered, but also various factors such as the suspension mode of a motor of the power bogie, the placement position of an axle box on a wheel shaft, the layout space of the motor and a gear box thereof, the structural form and the layout space of a primary suspension device and a secondary suspension device and the like need to be comprehensively designed according to the theoretical speed per hour, the bearing load, the minimum curve curvature, the road conditions such as the wind, snow, flying stones and the like of the train according to different vehicle type. Various design schemes developed around the core concept are improved and complicated day by day, so that iterative updating and continuous progress of the manufacturing level of the power bogie are promoted finally, framework schemes of different vehicle types are updated, and some new schemes in new forms even completely replace old ideas, so that the core improvement of the power bogie has obvious difference and innovation.

As shown in fig. 1 to 3, the frame of the bogie of the railway passenger car can be divided into a welded frame formed by butt welding a plurality of plate groups and a cast frame formed by integral casting, but the integral structures of the welded frame and the cast frame both belong to a frame which is formed by a cross beam body and two side beams and has a top view in a letter H shape, the geometric center of the frame is an integral cross beam body H or a cross beam body g in a shape like a Chinese character jing, the two types of cross beam bodies are both used for forming a short cross beam in the middle of a letter H stroke structure, and the two side beams are arranged at two ends of the cross beam body in a bilateral symmetry manner; the cross beam body is composed of two small cross beams perpendicular to the side beams. As shown in fig. 1 and 2, for a welded side sill formed by assembling and welding a plurality of plates to form a box structure, a welded side sill i is generally a bird wing-shaped structure with two upturned wings, and a welded axle seat i-2 is fixedly welded to a lower end surface of an inclined plane i-1 at a wing root part of each bird wing-shaped structure. And each welding piece side beam spring cap cylinder i-3 is fixedly connected to the wing tip end of one welding piece side beam i in a welding way. The side beam upper cover plate and the side beam lower cover plate of the welding part side beam i and the two welding part side beam side wall plates i-4 clamped between the side beam upper cover plate and the side beam lower cover plate are all special bird wing-shaped structures matched with the side wall plates i-4 of the welding part side beam, so that the clamping and positioning operation during the integral assembly welding of the welding part side beam i is relatively complex, a large number of positioning fixtures are needed to be used in the manufacturing process to ensure that the two welding part side beam side wall plates i-4 are respectively and vertically welded and fixedly connected with the welding part side beam lower cover plate according to mutually parallel postures, and the positioning of the plurality of side wall plate connecting rib plates and the welding part side beam spring cap cylinder i-3 can be realized only by additionally designed complex positioning tools. For example, chinese patent publication No. CN110722319A discloses a welding and positioning tool for side beams of a railway carriage frame, and the disclosed complicated positioning tool structure is additionally designed to improve the assembly and positioning accuracy of components such as side beam spring cap cylinders i-3, reduce calibration and mapping work, and reduce labor intensity. Similarly, the process of positioning and welding the wheel axle seat i-2 at the lower end of the inclined plane of the wing root part of the side beam of the weldment can be smoothly implemented only by specially designing a group assembling and positioning tool for the normal assembling and welding of the side beam, wherein the group assembling and positioning tool is disclosed as CN108817797A, and the design and the manufacture of the positioning tool inevitably bring about great increase of the production cost. For the cast side beam as shown in fig. 3, the cast side beam j and the integral cross beam body h are integrally cast and molded by a casting mold, so that the processes of dimension measurement, clamping and positioning and the like in the manufacturing process of the weldment side beam i are avoided, but compared with the welded side beam i, the flexibility of elastic deformation of the cast side beam is weakened due to the more rigid mechanical property of cast steel, so that the cast side beam needs to be matched with a more complex two-system damping system comprising a side rolling resistant torsion bar and a snake-shaped resistant damper. In addition, the existing cast side beam, the isosceles trapezoid large interface j-1 at the wing tip end of the cast side beam j, is specially designed for matching the axle box form of the axle box f stacked by multiple layers of rubber tiles e on the isosceles trapezoid, and is not suitable for the wheel set external axle box and the typical primary suspension structure corresponding to the axle box.

Railway vehicle bogies with traction motors, commonly referred to as power bogies, typically employ a two-stage suspension system.

As shown in fig. 1 and 2, a conventional typical primary suspension device is composed of a tray-type axle box a and a series of steel springs b mounted on the tray-type axle box a, and the upper ends of the series of steel springs b are used to support a circular cap tube at the end of a side sill of a bogie. Since the typical primary suspension device is mounted to the end of the axle d outside the wheel c, it is called a wheel-set external axle box. However, the axle box with the wheel set arranged externally greatly increases the axial total width of the wheel set, is easier to be impacted by flying sand and broken stone along the railway, increases the integral turning radius of the bogie, and is not beneficial to the improvement of the passing curvature of the minimum curve of the train. Another latest primary suspension device is shown in fig. 3, and it forms a primary suspension structure with built-in axle box which can be arranged inside the wheel c by stacking a plurality of layers of rubber tiles e on both sides of the axle box f of isosceles trapezoid, thus overcoming the old technical problem of the wheel set external axle box. However, the isosceles trapezoid axle box built-in type primary suspension structure with the rubber piles on the two sides has the disadvantages of complex manufacturing process, complex dismounting and maintenance procedures and high manufacturing and maintenance cost.

As shown in fig. 4 to 6, the secondary suspension device of the conventional bogie includes, but is not limited to, a secondary transverse damper k, two air springs m, an anti-roll torsion bar mechanism n, two secondary vertical dampers v and a secondary transverse stopper w for releasing various vertical vibration, torsion and overturning stress between the frame and the vehicle body, and a traction mechanism formed by two secondary traction pull rods p and a traction sleeper beam q together is used for transmitting the driving force of the bogie to the vehicle body underframe supported by the traction mechanism. However, the upper ends of the secondary transverse shock absorber k, the two air springs m, the two secondary vertical shock absorbers v and the anti-side-rolling torsion bar n on the existing bogie are generally directly connected below the bottom frame of the car body, and the structure causes that when the bogie is butted with the car body or is overhauled and maintained, the overhead crane needs to occupy a car-falling station of a car lifting machine or a car lifting machine for a long time, the speed increase of the production beat is seriously limited, the productivity and the efficiency are limited, in addition, the larger vertical span value between the car body and the framework also puts higher requirements on the respective vertical height and mechanical strength of the secondary transverse shock absorber k, the two air springs m, the two secondary vertical shock absorbers v and the anti-side-rolling torsion bar n, and the manufacturing and detection costs of the parts are additionally increased. In addition, the structural form and the layout position of the anti-rolling torsion bar n are comprehensively designed according to the span and the height of a framework, the vehicle body load and the complex stress state of the rolling torsional pendulum movement, design parameters of the anti-rolling torsion bar n are usually obtained in a static strength test and a dynamic test of the framework, and a large amount of extra test expenses and design research and development time are invested for the design parameters, so that the design cost is further improved, especially for part of traditional frameworks, anti-snake-shaped vibration absorbers are required to be additionally arranged on two side beams respectively, and the rolling and snake-shaped movement of the train bogie is further reduced in an auxiliary mode.

On the other hand, as shown in fig. 1 and 2, the integral cross beam body h or the cross beam body g of the conventional power bogie is generally provided with a motor hanging seat t and a gear box hanging seat u, which are respectively used for fixedly connecting a traction motor r and a gear box s, and the reverse torques of the two motors are offset by adopting a dual-motor installation mode that the front traction motor r and the rear traction motor r are rotationally and symmetrically arranged by the geometric center of the integral cross beam body h or the cross beam body g, so as to optimize the overall mechanical stability and the vibration balance characteristic of the power bogie. However, the installation mode depends on the integral cross beam body g or the cross beam body h in a shape like a Chinese character jing and is completely and rigidly connected with the motor hanging seat t and the gear box hanging seat u, the layout position and the welding manufacturing process of the motor hanging seat t and the gear box hanging seat u not only provide higher requirements for the structural strength and the symmetry precision of the cross beam body, but also occupy most of the space of the inner side of the conventional framework, so that the inner side of the conventional bogie lacks enough axle box layout space, a typical primary suspension device can only be arranged at two ends of an axle, the risk of damaging an axle box is increased, the integral structural size and the turning radius of the bogie are increased, the improvement of the minimum curve passing capacity is not facilitated, and the lifting lugs of the shell of the traction motor r are of an undetachable rigid structure, so that the lifting lugs of the shell of the traction motor r, the framework and the gear box structure interfere with each other to block each other, the traction motor r cannot be directly detached from the lower part of the vehicle body in the overhaul trench, and the car lifting jack is required to be used for separating the carriage above the framework from the framework, so that the traction motor r can be detached from the upper part of the framework, and the difficulty in motor maintenance and replacement is greatly increased. Meanwhile, the motor hanging seat t and the gearbox hanging seat u which are rigidly connected also cause that the traction motor r and the gearbox s lack an enough vibration damping protection system, so that the installation of auxiliary structures such as an anti-snake-shaped vibration damper, an anti-side-rolling torsion bar n and the like becomes indispensable necessary supplement.

In addition, different train design hourly speed requirements or different side beam structural forms can also have great influence on the layout space and structural form of the primary suspension device, the secondary suspension device, the motor and the gear box, which often results in that the layout scheme of the old primary suspension device or secondary suspension device cannot meet the requirements of installation position and vibration reduction index, and the old reference scheme must be overturned to make a design improvement of a brand new concept.

As shown in figures 7 to 9, the big gear s-2 installed inside the housing s-1 of the existing buckling and splicing type gear box is directly pressed with the bearing outer ring s-3-2 on the big gear bearing s-3 to form a coaxially fixed interference fit, the gear box installation shaft section d-1 on the axle d is directly pressed with the big gear bearing inner ring s-3-1 on the big gear bearing s-3 to form a coaxially fixed interference fit, the coaxially fixed form of the interference fit causes the gear box installation shaft section d-1, the gear box bearing s-3 and the big gear s-2 to be an inseparable whole, and the buckling and splicing type gear box housing s-1 cannot be directly used as the acting point of a withdrawing baffle on a wheel shaft withdrawing press because of low structural strength, moreover, the bearing inner ring of the existing large gear bearing s-3 is too narrow, so that the withdrawing baffle on the wheel shaft withdrawing pressure machine is transformed into a multi-jaw chuck form, and is inserted into the gear box from the axle through hole on the axial side wall of the gear box, the radial withdrawing blocking acting force on the large gear bearing inner ring s-3-1 cannot be reliably implemented due to the lack of enough radial acting points, so that the axle withdrawing cannot be directly implemented, and further, when the axle d or the large gear s-2 is subsequently overhauled, the original splicing buckling state of the buckled and spliced gear box shell s-1 must be firstly removed, and the axle d, the large gear s-2 coaxially and fixedly connected with the axle d into a whole and the large gear bearing s-3 are integrally dismantled from the framework together, and then transferred to a wheel shaft unloading pressure machine to finish unloading and replacing operations. The method is complicated in process, time-consuming and labor-consuming, and cannot be used for conveniently and rapidly detaching and replacing the axle d on the premise of not detaching the gearwheel s-2 from the buckled and spliced type gear box shell s-1, or the axle d cannot be detached independently and the gearwheel s-2 in the gear box shell s-1 can be directly overhauled, lubricated and maintained at a hole left after the axle d is removed on the premise of keeping the buckled state of the buckled and spliced type gear box shell s-1. And axle box mounting journal sections d-2 at two ends of the axle d are coaxially and fixedly connected with bearings C-2 of wheels.

Disclosure of Invention

The technical problems to be solved by the invention are as follows:

1) in the manufacturing process of the existing welding type side beam with the bird wing-shaped curve structure, a large number of positioning clamps are needed to ensure that the side wall plates of the two welding side beams are respectively and vertically welded and fixedly connected with the lower cover plate of the welding side beam according to the parallel postures.

2) The positioning process of the plurality of side wall plate connecting rib plates of the welding type side beam and the spring cap barrel of the welding side beam can be realized only by an additionally designed complex positioning tool; and the welding cooling process can be corrected through additionally added correction and adjustment operations to correct various asymmetric structural dimensional deviations of stretching, twisting, side tilting and the like with different dimensions and directions in the welding cooling process, so that the welding quality is ensured reluctantly.

3) Due to the design defects of the prior structure, the existing cast side beam for the high-speed running train needs to be matched with a more complex secondary damping system comprising an anti-rolling torsion bar and an anti-snake-shaped damper; in addition, the existing cast side beam, which has the large isosceles trapezoid interface at the wingtip end of the cast side beam, is specially designed for matching the axle box form of the axle box stacked by multiple layers of rubber tiles on the isosceles trapezoid, and is not suitable for the wheel-set external axle box and the typical primary suspension structure corresponding to the axle box.

4) In addition, the isosceles trapezoid axle box built-in type primary suspension structure with the rubber piles on the two sides has complex manufacturing process and complex disassembly, assembly and maintenance procedures, and causes high manufacturing and maintenance cost.

5) Moreover, the upper ends of a secondary transverse shock absorber, two air springs, two secondary vertical shock absorbers and an anti-rolling torsion bar on a secondary suspension device of the traditional bogie are generally directly connected below a car body underframe, and when the structure leads to butt joint of the bogie and a car body or maintenance and repair, the structure needs to occupy a car falling station of a crown block hoisting machine or a car lifting machine for a long time, so that the speed increase of the production beat is seriously restricted, and the improvement of the capacity and the efficiency is limited. Moreover, a larger vertical span value between the carriage and the frame also puts higher requirements on the respective vertical heights and mechanical strengths of the secondary transverse shock absorber, the two air springs, the two secondary vertical shock absorbers and the anti-rolling torsion bar, and the manufacturing and detection costs of the components are additionally increased.

6) On the other hand, by means of the motor installation mode of the whole cross beam body or the cross beam body in a shape like a Chinese character jing and completely rigidly connected with the motor hanging seat and the gear box hanging seat, the layout positions and the welding manufacturing process of the motor hanging seat and the gear box hanging seat of the motor hanging seat not only put forward higher requirements on the structural strength and the symmetry precision of the cross beam body, but also occupy most of the space on the inner side of a conventional framework, so that the inner side of the existing bogie lacks enough axle box layout space, and a typical one-system suspension device can only be arranged at two end parts of an axle, thereby increasing the damage risk of the axle box, simultaneously increasing the whole structural size and the turning radius of the bogie, and being not beneficial to the improvement of the minimum curve passing capacity.

7) Because the lug of traction motor shell is undetachable rigid structure, cause it to interfere as structure each other with framework and gear box and block, cause traction motor can't directly remove alone from automobile body below via examining and repairing in the trench, and must use the car lifting jack, with the carriage and the framework separation of framework top, could realize moving back the unloading with traction motor from the framework top, greatly increased the degree of difficulty that the motor maintained the change.

8) The gear wheel installed inside the buckled and spliced gear box shell forms an interference fit through the gear wheel bearing and the gear box installation shaft section of an axle to form a coaxially fixedly connected form, so that the gear box installation shaft section, the gear box bearing and the large gear form an inseparable whole, and the buckled and spliced gear box shell cannot be directly used as an acting point of a withdrawing baffle on an axle withdrawing pressure machine due to low structural strength, and moreover, the inner ring of the bearing of the existing large gear bearing is too narrow, so that even if the withdrawing baffle on the axle withdrawing pressure machine is modified into a multi-claw chuck form and inserted into the gear box from an axle through hole on the axial side wall of the gear box, the inner ring of the large gear bearing cannot be reliably withdrawn and blocked due to lack of enough radial acting points, therefore, the axle dismounting can not be directly implemented, when the factors cause follow-up maintenance of the axle or the gearwheel, the axle can not be dismounted and replaced independently under the premise of not dismounting the gearwheel from the lock splicing type gearbox shell conveniently and quickly, and the axle can not be pulled out independently and a plurality of technical problems of maintenance, lubrication, maintenance and other operations can be directly performed on the gearwheel in the gearbox shell from the hole left after dismounting the axle can not be solved under the premise of keeping the lock state of the lock splicing type gearbox shell.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the bogie comprises a framework and a wheel set device consisting of wheels and an axle, wherein the framework comprises two framework side beams and two framework cross beams, the framework side beams comprise side beam middle sections which are used as two bird wing connecting parts and are positioned at lower positions and two bird wing-shaped side beam cantilever sections which are symmetrically fixedly connected to two ends of the side beam middle sections, and the bird wing-shaped side beam cantilever sections are formed by connecting an upward tilted section and a horizontal extending section which extends horizontally and outwards;

the bogie is characterized by further comprising four annular vibration reduction axle boxes, an easy-to-withdraw axle type gear box, a side beam single-point suspension type motor, an integrated vibration reduction type swing bolster and a secondary suspension system;

the framework side beam and the framework cross beam are of a cast and integrally formed structure, and the framework further comprises two framework spring mounting seats, two framework traction pull rod seats, two framework transverse stopping seats, two side beam self-provided gear box hanging seats, two gear box vertical stopping seats, four semi-ring clamp type axle box hanging seats, two motor single-point hanging seats, two motor vertical limiting stopping seats, two framework vertical shock absorber seats, four antenna beam hanging seats and two framework transverse shock absorber seats;

the two framework spring mounting seats are symmetrically and fixedly connected to the upper end of the middle part of the side beam, the two framework traction pull rod seats are rotationally and symmetrically fixedly connected to the outer side wall of the middle part of the side beam, and the two framework transverse stopping seats are rotationally and symmetrically and fixedly connected to the upper end of the cantilever section of the bird-wing-shaped side beam; the two gear box hanging seats and the vertical gear box stopping blocks are sequentially and respectively rotationally and symmetrically fixedly connected to the inner side wall of the cantilever section of the wing-shaped side beam below the root part of the transverse stopping seat of the framework from top to bottom; the two motor single-point suspension seats, the two motor vertical limiting stop dogs and the two framework vertical shock absorber seats are respectively and rotationally and symmetrically fixedly connected to the inner side wall of the lower part of the inclined section of the wing-shaped side beam cantilever section, the two motor single-point suspension seats are rotationally and symmetrically fixedly connected to the bottom of the lower end face of the inclined section of the wing-shaped side beam cantilever section, and the two motor vertical limiting stop dogs are rotationally and symmetrically fixedly connected to the upper end of the junction of the inclined section and the horizontal extension section of the wing-shaped side beam cantilever section; the four antenna beam hanging seats are arranged on the outer side wall of the farthest end of each bird wing-shaped side beam cantilever section, the four semi-ring clamp type axle box hanging seats are arranged at the bottom of the far end of each bird wing-shaped side beam cantilever section, and a sensor mounting hole is formed in the upper end face of each semi-ring clamp type axle box hanging seat; the transverse shock absorber seat is fixedly connected with the middle section of the upper end surface of a corresponding framework beam;

the two annular vibration-damping axle boxes are arranged on the inner sides of the wheels and are coaxially and rotatably connected to two ends of an axle, each annular vibration-damping axle box comprises an axle bearing, an axle box positioning and temperature-measuring heat-conducting sheath and a vibration-damping rubber ring, the axle box positioning and temperature-measuring heat-conducting sheath is coaxially and fixedly connected with the outer ring of the axle bearing, the inner ring of the axle bearing is coaxially pressed and fixedly connected to two ends of the axle, sockets for positioning temperature sensors are arranged on the upper parts of the axle box positioning and temperature-measuring heat-conducting sheath and the vibration-damping rubber ring, and the positions of the sockets correspond to sensor mounting holes on the upper end faces of cantilever sections of the bird-wing-shaped side beams;

the easy-to-withdraw shaft type gear box is pressed on a gear box mounting shaft section of the axle, and one side of the easy-to-withdraw shaft type gear box is connected to a gear box lifting seat through a gear box lifting rod;

one side of the side beam single-point suspension type motor is fixedly connected to the motor single-point suspension seat, and the other side of the side beam single-point suspension type motor is elastically connected with the easy-to-withdraw shaft type gear box in a rubber node suspension mode;

the integrated vibration damping type swing bolster and the secondary suspension system are positioned above the framework and are correspondingly connected with the framework.

The central connecting line of the shell socket of the axle box positioning and temperature measuring heat conducting sheath and the rubber ring blind hole socket of the vibration damping rubber ring forms an angle of 60 degrees with the horizontal plane.

The axle box positioning and temperature measuring heat conducting sheath and the vibration damping rubber ring are respectively of an annular structure formed by buckling two semi-rings, two heat conducting sheath protrusions arranged along the outer side wall of the circumference are arranged on the outer wall of the axle box positioning and temperature measuring heat conducting sheath, two axle box vibration damping ring clamping grooves arranged along the inner wall of the circumference are arranged on the inner side wall of the vibration damping rubber ring, each heat conducting sheath protrusion is embedded into one corresponding axle box vibration damping ring clamping groove, and the axle box positioning and temperature measuring heat conducting sheath is axially limited in the vibration damping rubber ring; the annular vibration reduction axle box is arranged below the end part of the cantilever section of the bird wing-shaped side beam through the matching of the semi-annular shell and the semi-ring clamp type axle box hanging seat.

An axle mounting hole and a motor coupler mounting hole are formed in the middle of a gearbox shell of the easy-to-withdraw shaft type gearbox, four motor flexible suspension rubber node seat holes distributed according to an isosceles trapezoid are fixedly connected to the same side of the gearbox shell on the periphery of the motor coupler mounting hole, the center of each of two lower motor flexible suspension rubber node seat holes and the hole center connecting line of the motor coupler mounting holes form an included angle beta of 100-140 degrees, and the optimal value of the included angle beta is 120 degrees; a gear box shell vertical stop block is fixedly connected to the outer side wall of the gear box shell at the intersection of the extension line of the center connecting line of the axle mounting hole and the motor coupling mounting hole and the gear box shell; the outer side wall of the gear box shell below the vertical stop block of the gear box shell is fixedly connected with a vertical hanging rod seat of the shell, and two ends of the gear box hanging rod are respectively provided with a rubber vibration damping gasket which is used for elastically connecting the vertical hanging rod seat of the shell with the gear box hanging seat.

The lower part of the rear end cover of the side beam single-point suspension type motor shell is fixedly connected to a motor single-point suspension seat through a side beam end motor suspension rubber node and a motor suspension rubber node semi-ring clamp, the upper part of the rear end cover of the side beam single-point suspension type motor shell is fixedly connected with a horizontal motor vertical cantilever stop rod, the motor vertical cantilever stop rod is suspended right above a motor vertical limiting stop, and the range of the gap value between the motor vertical cantilever stop rod and the motor vertical limiting stop is 10-50 mm; a motor shell positioned at the end of a motor output shaft on the side beam single-point suspension type motor is fixedly connected to four motor flexible suspension rubber node seat holes in an elastic suspension mode through four motor flexible suspension rubber nodes respectively, and the motor output shaft of the side beam single-point suspension type motor is rotatably connected to a speed reduction gear mechanism inside a motor coupler mounting hole through a coupler.

The integrated vibration reduction type swing bolster and secondary suspension system comprises a swing bolster, two secondary air springs under two bolster beams, two traction pull rods, a transverse vibration absorber under the bolster beams, two vertical vibration absorbers and two side bearings; the swing bolster is of a box-type structure, an inner cavity of the swing bolster is used as an air chamber of the secondary air springs with the two underlying sleeper beams, and the bottoms of the two ends of the swing bolster are provided with interfaces connected with air inlets and air outlets of the secondary air springs with the two underlying sleeper beams; two end parts of the swing bolster are fixedly connected with two swing bolster traction pull rod seats which are suspended downwards in a rotational symmetry manner around the mass center of the swing bolster, the lower end surface of the middle part of the swing bolster is fixedly connected with a transverse damper seat, the side wall of the middle part of the swing bolster is fixedly connected with two vertical damper seats in a rotational symmetry manner, one side of the side wall of the middle part of the swing bolster, which is close to the swing bolster traction pull rod seats, is fixedly connected with two swing bolster transverse stop seats in a rotational symmetry manner, and the center of the swing bolster is provided with a center pin hole;

the two sleeper beam underlying secondary air springs are correspondingly placed on the two structural overhead spring mounting seats one by one and are positioned at the bottoms of the two ends of the swing bolster; one end of each traction pull rod is fixedly connected to the swing bolster traction pull rod seat through a rubber node, and the other end of each traction pull rod is fixedly connected to the two framework traction pull rod seats through a rubber node; one end of the sleeper beam underlying transverse shock absorber is fixedly connected to the transverse shock absorber seat through a rubber node, and the other end of the sleeper beam underlying transverse shock absorber is fixedly connected to a corresponding framework transverse shock absorber seat through a rubber node; one ends of the two vertical shock absorbers are fixedly connected to the vertical shock absorber seat through rubber nodes, and the other ends of the two vertical shock absorbers are fixedly connected to the framework vertical shock absorber seat through rubber nodes; the two side bearings are fixedly connected to the upper end face of the swing bolster and are positioned right above the two sleeper beams underlying secondary air springs.

The outer diameter of the gear box mounting shaft section of the axle is reduced to 80% of the original value to form a small-diameter gear box mounting shaft section; the inside of the easy-to-withdraw shaft type gear box also comprises an easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve and two large gear bearing end covers provided with screw hole arrays;

the inner diameter of the radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type large gear bearing is the same as the outer diameter of the mounting shaft section of the small-diameter gear box, and the inner diameter and the outer diameter are coaxially and fixedly connected through press mounting; the inner ring of the bull gear bearing on the bull gear bearing is coaxially and fixedly connected on the outer diameter of the radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type bull gear bearing through press fitting; the radial outer circumferential end face of the radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type big gear bearing is provided with a screw hole array arranged along the radial direction of the easy-to-withdraw shaft type big gear bearing, two big gear bearing end covers are fixedly connected to the front end face and the rear end face of the radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type big gear bearing respectively through bolt groups arranged along the circumferential array, and the front end face and the rear end face of the big gear bearing are sealed in the axle mounting hole; the flange of the gear box electric brush mechanism is coaxially and fixedly connected with the corresponding screw hole on the outer diameter side wall of the axle mounting hole through a plurality of bolts.

The invention has the following beneficial effects:

the main structure of the bogie frame based on the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor is formed by the frame side beam and the frame cross beam which are integrally formed by casting technology, so that the situation that in the manufacturing process of the frame, a large number of positioning clamps are needed to be used to ensure that two side beam side wall plates of a welding part are respectively and vertically welded and fixedly connected with a lower cover plate of the side beam of the welding part according to mutually parallel postures is avoided, and structural dimension deviations of different scales and directions, such as stretching, distortion, tilting and the like in the welding cooling process can be corrected through additionally-added correction and adjustment operation, so that the welding quality is ensured.

The semi-ring clamp type axle box hanging seat is arranged at the bottom of the far end of the cantilever section of each bird wing-shaped side beam, and a sensor mounting hole is formed in the upper end face of each semi-ring clamp type axle box hanging seat; the two annular damping axle boxes are arranged on the inner sides of the wheels and coaxially fixedly connected to the two ends of the axle, damping rubber rings arranged inside the annular damping axle boxes are coaxially and fixedly connected with the outer rings of the axle bearings, the inner rings of the axle bearings are coaxially and pressure-mounted and fixedly connected to the two ends of the axle, rubber ring blind hole sockets for positioning temperature sensors are arranged on the upper portions of the damping rubber rings of the annular damping axle boxes, shell sockets serving as positioning temperature sensor butt-joint seats are arranged on the upper portions of the axle box positioning and temperature measuring heat conducting sheaths, and the positions of the two sockets correspond to sensor mounting holes of the side beams of the framework. The design scheme ensures that the temperature measuring end of the temperature sensor can be inserted and positioned in the rubber ring blind hole socket through the sensor mounting hole and the shell socket in sequence, thereby getting rid of the separation effect of the damping rubber ring on the temperature of the axle box, leading the semi-ring clamp type axle box lifting seat of the invention to become a brand new clamp axle-hung wheel pair built-in axle box capable of accurately measuring the temperature of the outer side wall of the axle box from the radial direction, the innovative structural design thoroughly breaks through the problem that the prior axle box which is formed by stacking a plurality of layers of rubber tiles on an isosceles trapezoid can only be made into an open structural form, otherwise the temperature can not be accurately measured from the radial direction, and a typical primary suspension system commonly constructed with a tray axle housing and a series of steel springs must rely on structural contraindications of weldment side beam spring cap cartridges, therefore, the design and manufacturing process of a complicated special positioning tool for the spring cap barrel of the side beam of the butt welding part is avoided. This design is in abandoning to pile up by multilayer rubber tile in isosceles trapezoid's axle box structure outside, still improves and has reduced the appearance and the size of the big interface of isosceles trapezoid of old foundry goods curb girder wingtip tip portion, and then promotes its mechanical structure intensity by a wide margin to make the installation and the temperature measurement of semi-ring clamp formula axle box hanging seat become possible. In addition, the structure form that the semi-ring clamp type axle box lifting seat is arranged inside the inner sides of the two wheels of the axle box is adopted to reduce the damage risk when the axle box is arranged externally, and on the premise of ensuring the installation position and the vibration reduction index of a primary suspension axle box device, the transverse width size and the turning radius of the whole bogie are effectively reduced, so that the curve passing capacity of the bogie is further improved. The compact type primary suspension structure based on the annular vibration reduction axle box benefits from the layout space saved by a new layout mode of a motor and a gear box, and the semi-annular shell of the compact type primary suspension structure is buckled with the semi-ring clamp type axle box suspension seat into a complete annular structure by adopting a split type clamp form connected by bolts, so that the compact type primary suspension structure is convenient to install, disassemble and maintain, and meanwhile, the adverse effect of welding deformation is avoided.

The gearbox hanging seat and the gearbox vertical stopping block are sequentially and fixedly connected on the inner side wall of the cantilever section of the bird wing-shaped side beam along the same plumb line, the easy-to-withdraw shaft type gearbox is coaxially installed on the gearbox installation shaft section of an axle, the casing vertical hanging rod seat at the farthest end of the casing of the easy-to-withdraw shaft type gearbox is only connected on the gearbox hanging seat through a gearbox hanging rod with rubber damping gaskets arranged at the upper end and the lower end, so that the anti-rotation resistance around the axle is exerted on the easy-to-withdraw shaft type gearbox by the maximum rotation moment, the gearbox casing vertical stopping block at the middle part of the far end of the easy-to-withdraw shaft type gearbox is positioned above the casing vertical hanging rod seat, the rotation radius of the gearbox casing vertical stopping block relative to the axle installation hole axis is slightly smaller than that of the casing vertical hanging rod seat, and a movable gap of about 100mm is kept between the gearbox vertical stopping block and the gearbox casing vertical stopping block, and the maximum value of the rotary displacement of the vertical stop block of the gear box shell is limited. On the other hand, similar to the suspension mode of the easy-to-withdraw shaft type gear box, the motor single-point suspension seat, the motor vertical limit stop and the framework vertical shock absorber seat are rotationally and symmetrically fixedly connected to the wing-shaped side beam cantilever section, the lower part of the rear end cover of the side beam single-point suspension type motor shell is fixedly connected to the motor single-point suspension seat through a side beam end motor suspension rubber node and a motor suspension rubber node semi-ring clamp, and the motor vertical cantilever stop rod is suspended right above the motor vertical limit stop; meanwhile, a motor shell positioned at the end of the motor output shaft on the side beam single-point suspension type motor is fixedly connected to four motor flexible suspension rubber node seat holes in an elastic suspension mode through four motor flexible suspension rubber nodes respectively. The suspension mode of the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor enables the weight and the vibration load of the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor to be completely borne by the framework side beam and the axle, and the structure abandons the old motor installation mode of a large-size rigid connection mode which is supported on the whole cross beam body or the cross beam body in a shape of a Chinese character jing and completely suspended with the motor suspension seat and the gear box suspension seat, so that the process requirements on the structural strength, the symmetry precision and the group precision of the cross beam are reduced, and the complexity of framework manufacturing is simplified. The design scheme not only reduces the occupied degree of the rigid large-size hanging seat structure to the inner side part of the side beam of the framework originally, but also enables the axle-hung wheel to be installed on the built-in axle box. The design also reserves enough operation space for the disassembly and assembly maintenance of the gear box and the motor structure, greatly optimizes the assembly and disassembly scheme of the motor, the easy-to-withdraw shaft type gear box is fixedly connected with four motor flexible suspension rubber node seat holes distributed in an isosceles trapezoid shape on the same side of the gear box shell at the periphery of a motor coupler mounting hole of the gear box shell, the center of each of the two motor flexible suspension rubber node seat holes positioned below is respectively 100-140 degrees of included angle beta with the hole center connecting line of the motor coupler mounting hole, and the frame traction pull rod seat is fixedly connected on the outer side wall in the middle part of the middle section of the side beam The old mode of unloading has greatly improved the motor and has overhauld the convenience.

The integrated vibration reduction type swing bolster and the secondary suspension system are positioned above the horizontal and vertical integrated flexible interconnection framework and are correspondingly connected with the horizontal and vertical integrated flexible interconnection framework, the swing bolster is of a box-type structure, an inner cavity of the swing bolster is used as an air chamber of two secondary air springs with two underneath sleeper beams, and the bottoms of two ends of the swing bolster are provided with interfaces connected with air inlets and air outlets of the two secondary air springs with two underneath sleeper beams; two end parts of the swing bolster are fixedly connected with two swing bolster traction pull rod seats which hang downwards in a rotational symmetry mode around the mass center of the swing bolster, the lower end face of the middle of the swing bolster is fixedly connected with a transverse damper seat, the side wall of the middle of the swing bolster is fixedly connected with two vertical damper seats in a rotational symmetry mode, one side, close to the swing bolster traction pull rod seat, of the side wall of the middle of the swing bolster is fixedly connected with two swing bolster transverse stop seats in a rotational symmetry mode, and the center of the swing bolster is provided with a center pin hole; the two sleeper beam underlying secondary air springs are correspondingly placed on the two structural overhead spring mounting seats one by one and are positioned at the bottoms of two ends of the swing bolster; one end of each traction pull rod is fixedly connected to the swing bolster traction pull rod seat through a rubber node, and the other end of each traction pull rod is fixedly connected to the two framework traction pull rod seats through a rubber node; one end of the sleeper beam underlying transverse shock absorber is fixedly connected to the transverse shock absorber seat through a rubber node, and the other end of the sleeper beam underlying transverse shock absorber is fixedly connected to a corresponding framework transverse shock absorber seat through a rubber node; one ends of the two vertical shock absorbers are fixedly connected to the vertical shock absorber seat through rubber nodes, and the other ends of the two vertical shock absorbers are fixedly connected to the framework vertical shock absorber seat through rubber nodes; two side bearings are fixedly connected to the upper end face of the swing bolster and are located right above the two sleeper beams underlying secondary air springs. The integrated vibration reduction type swing bolster and the secondary suspension system directly integrate various vibration reduction buffering components with the integrated vibration reduction type swing bolster and the secondary suspension system, so that the connecting process of the traditional secondary transverse vibration absorber, two air springs, two secondary vertical vibration absorbers, an anti-rolling torsion bar and other components and a vehicle body is greatly reduced, the rapid falling of a carriage and a framework can be realized, the occupied time of a crown block and a car lifting machine is shortened, the turnover efficiency of a production line is improved, and the integrated secondary bolster system is convenient to independently replace and overhaul. The integrated vibration damping type swing bolster and the secondary suspension system also enable the two sleeper beam underlying type secondary air springs, the sleeper beam underlying type transverse vibration absorbers and the two vertical vibration absorbers to be directly connected to the lower portion of the swing bolster from the upper portion of the framework of the integrated vibration damping type swing bolster and the lower portion of the secondary suspension system of the integrated vibration damping type swing bolster and the secondary suspension system of the integrated vibration damping type swing bolster, and are not directly connected to the lower portion of a vehicle body from the framework like the traditional secondary suspension device of a bogie, so that the length requirements of the two system vibration damping buffer components are greatly reduced, the manufacturing cost is reduced, and the strength is improved. In addition, when the integrated vibration damping type swing bolster and the secondary suspension system are used together with the built-in axle box of the hoop axle-hung wheel pair, the two components form a brand-new comprehensive vibration damping structure, the vertical and longitudinal torques generated by the side rolling motion of the vehicle body can be fully released, all the vibrations of the transverse, longitudinal, vertical, snaking torsion, side rolling and the like generated by the motor and the gear box are effectively eliminated, and further, a more ideal anti-side rolling balance effect is achieved, so that the vibration influence degree of the bogie on the vehicle body is reduced to the minimum, the balance stability and the comfort of the vehicle body are enhanced, the fatigue loss of the whole structure is effectively reduced, and the whole service life of the bogie and the vehicle body is greatly prolonged.

The invention reduces the outer diameter of the gear box mounting shaft section on the original axle to 80 percent of the original value to form a small-diameter gear box mounting shaft section; the newly added radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type large gear bearing is coaxially nested on the outer diameter of the mounting shaft section of the small-diameter gear box in an interference press-fitting mode, and the inner ring of the large gear bearing on the large gear bearing is coaxially and fixedly connected on the outer diameter of the radial thickening sleeve of the inner ring of the easy-to-withdraw shaft type large gear bearing through press-fitting; the inner ring of the gearwheel bearing which is originally too narrow in the radial direction is turned and thickened by the mode, so that after a retreating baffle on an axle retreating pressure machine is modified into a multi-jaw chuck form, the multi-jaw chuck jaws of the wheel axle retreating pressure machine can be inserted into the gear box from an axle mounting hole on the axial side wall of the gear box, and the anti-channeling stopping acting force can be uniformly and reliably applied to the axial outer end surface of the easy-retreating shaft type gearwheel bearing inner ring radial thickening sleeve coaxially and fixedly connected with the gearwheel bearing inner ring, so that the operation processes of independently removing the axle and directly overhauling, lubricating, maintaining and the like the gearwheel in the gear box shell from a hole left after the axle is retreated can be possible on the premise of not removing the gearwheel from the buckled and spliced gear box shell.

In the process manufacturing indexes of the bogie based on the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor, the value range of an included angle beta between the center of each of two motor flexible suspension rubber node seat holes positioned below and a hole center connecting line of a motor coupler mounting hole is clearly given to be 100-140 degrees, the optimal value is 120 degrees, the core data ranges are optimal empirical parameters obtained through a large number of test summaries, the integral vibration characteristic of the bogie can be optimized to the greatest extent, and the method is a crystal and a proof put into research and development.

In addition, the bogie based on the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor is a brand-new bogie design form, the manufacturing schemes of the four annular vibration reduction shaft boxes, the easy-to-withdraw shaft type gear box, the side beam single-point suspension type motor, the integrated vibration reduction type swing bolster and the secondary suspension system are all modularized, and different module units can independently implement standardized production and are beneficial to realizing assembly line manufacturing, so that the production efficiency is greatly improved, the production cost is reduced, and the economic value is created.

Drawings

FIG. 1 is a schematic perspective view of a prior art welded frame truck;

FIG. 2 is a schematic perspective view of a prior art welded frame and a series of steel springs;

FIG. 3 is a schematic perspective view of a prior art cast frame, wheel set and internal axle housing;

FIG. 4 is a schematic perspective view of a prior art secondary suspension and traction mechanism;

FIG. 5 is a schematic illustration of the exploded structure of FIG. 4;

FIG. 6 is a schematic perspective view of a prior art cast frame, secondary suspension and traction mechanism;

FIG. 7 is a schematic view of an assembled relationship of a conventional gear case and an axle;

FIG. 8 is a schematic view showing the assembled relationship of the bull gear and the axle of FIG. 7;

FIG. 9 is an enlarged partial schematic view of FIG. 8;

FIG. 10 is a schematic perspective view of the present invention bogie based on an easy-to-retract shaft type gearbox and a side beam single point suspension motor;

FIG. 11 is an exploded view of the bogie of the present invention based on an easy-to-retract shaft gearbox and side beam single point suspension motor;

FIG. 12 is a schematic illustration of the integrated vibration damping bolster and secondary suspension system of the present invention;

FIG. 13 is a schematic illustration of the exploded structure of FIG. 12;

FIG. 14 is a schematic structural view of the framework of the present invention;

FIG. 15 is a schematic structural view of the frame and integrated vibration damping bolster and secondary suspension system of the present invention;

FIG. 16 is a schematic structural view of a reverse-axis gearbox of the present invention;

FIG. 17 is a schematic structural view of an easy-to-retract shaft gearbox, side beam single point undermount motor, and gearbox boom of the present invention;

FIG. 18 is a schematic structural view of an easy-to-retract shaft gearbox and gearbox boom of the present invention;

FIG. 19 is a schematic view of the wheelset assembly, annular damper housing and temperature sensor of the present invention;

FIG. 20 is a schematic view of the construction of the annular damper axle housing and temperature sensor of the present invention with the axle bearing and semi-annular housing removed;

FIG. 21 is an exploded view of the annular shock absorbing axlebox of the present invention with the axle bearing and semi-annular housing removed;

FIG. 22 is a schematic structural view of an axle, an easy-to-withdraw shaft type bull gear bearing inner race radial thickening sleeve and a bull gear bearing end cover in the present invention;

FIG. 23 is a schematic axial cross-sectional structural view of the axle, the easy-to-retract shaft bull gear bearing inner race radial thickening sleeve, and the bull gear bearing end cap of the present invention after assembly;

fig. 24 is a schematic view of the present invention in use with a penetrating multi-jaw chuck to remove an axle from a bull gear.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 10 to 24, the bogie based on the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor comprises a framework a and a wheel pair device formed by a wheel c and an axle d, wherein the framework a comprises two framework side beams a-1 and two framework cross beams a-2, the framework side beam a-1 comprises a side beam middle section a-1-1 serving as two bird wing connecting parts and located at a lower position and two bird wing-shaped side beam cantilever sections a-1-2 symmetrically connected to two ends of the side beam middle section a-1-1, and the bird wing-shaped side beam cantilever section a-1-2 is formed by connecting an upward tilted section and a horizontal extending section which extends horizontally and outwards;

the bogie is characterized by further comprising four annular vibration reduction axle boxes B, an easy-to-withdraw axle type gear box D, a side beam single-point suspension type motor E, an integrated vibration reduction type swing bolster and a secondary suspension system F;

the framework side beam A-1 and the framework cross beam A-2 are of a cast integrally-formed structure, and the framework A further comprises two framework spring installation bases A-3, two framework traction pull rod bases A-4, two framework transverse stopping bases A-5, two side beam self-provided gear box hanging bases A-6, two gear box vertical stopping bases A-7, four semi-ring clamp type shaft box hanging bases A-8, two motor single-point hanging bases A-9, two motor vertical limiting stopping bases A-10, two framework vertical shock absorber bases A-11, four antenna beam hanging bases A-12 and two framework transverse shock absorber bases A-13;

two framework spring installation seats A-3 are symmetrically and fixedly connected to the upper end of the middle part of the middle section A-1-1 of the side beam, two framework traction pull rod seats A-4 are rotationally and symmetrically and fixedly connected to the outer side wall of the middle part of the middle section A-1-1 of the side beam, and two framework transverse stopping seats A-5 are rotationally and symmetrically and fixedly connected to the upper end of the cantilever section A-1-2 of the wing-shaped side beam of the bird; the two gearbox hanging seats A-6 and the gearbox vertical stopping blocks A-7 are sequentially and respectively rotationally and symmetrically fixedly connected to the inner side walls of the bird wing-shaped side beam cantilever sections A-1-2 below the root of the framework transverse stopping seat A-5 from top to bottom; two motor single-point suspension seats A-9, two motor vertical limit stoppers A-10 and two framework vertical vibration reducer seats A-11 are respectively and rotationally symmetrically connected to the inner side wall of the lower part of the cantilever section A-1-2 of the wing-shaped side beam, the two motor single-point suspension seats A-9 are rotationally symmetrically connected to the bottom of the lower end face of the cantilever section A-1-2 of the wing-shaped side beam, and the two motor vertical limit stoppers A-10 are rotationally symmetrically connected to the upper end of the junction of the cantilever section A-1-2 of the wing-shaped side beam and the horizontal extension section; four antenna beam hanging seats A-12 are arranged on the outer side wall of the farthest end of each bird wing-shaped side beam cantilever section A-1-2, four semi-ring clamp type axle box hanging seats A-8 are arranged at the bottom of the far end of each bird wing-shaped side beam cantilever section A-1-2, and a sensor mounting hole A-8-1 is formed in the upper end face of each semi-ring clamp type axle box hanging seat A-8; the transverse shock absorber seat A-13 is fixedly connected with the middle section of the upper end surface of a corresponding framework beam A-2;

the two annular vibration-damping axle boxes B are arranged on the inner side of the wheel c and are coaxially and rotatably connected to two ends of an axle d, each annular vibration-damping axle box B comprises an axle bearing B-2, an axle box positioning and temperature-measuring heat-conducting sheath B-3 and a vibration-damping rubber ring B-1, the axle box positioning and temperature-measuring heat-conducting sheath B-3 is coaxially and fixedly connected with the outer ring of the axle bearing B-2, the inner ring of the axle bearing B-2 is coaxially and fixedly connected to two ends of the axle d in a pressing mode, sockets for positioning temperature sensors G are arranged on the upper portions of the axle box positioning and temperature-measuring heat-conducting sheath B-3 and the vibration-damping rubber ring B-1, and the positions of the sockets correspond to sensor mounting holes A-8-1 on the upper end face of a cantilever section A-1-2 of the bird-wing-shaped side beam;

the easy-to-withdraw shaft type gear box D is pressed on a gear box mounting shaft section D-1 of the axle D, and one side of the easy-to-withdraw shaft type gear box D is connected to a gear box lifting seat A-6 through a gear box lifting rod H;

one side of a side beam single-point suspension type motor E is fixedly connected to a motor single-point suspension seat A-9, and the other side of the side beam single-point suspension type motor E is elastically connected with an easy-to-withdraw shaft type gear box D in a rubber node suspension mode;

the integrated vibration damping type swing bolster and the secondary suspension system F are located above the framework A and correspondingly connected with the framework A.

The central connecting line of the shell socket B-3-1 of the axle box positioning and temperature measuring heat conducting sheath B-3 and the rubber ring blind hole socket B-1-1 of the vibration damping rubber ring B-1 forms an angle of 60 degrees with the horizontal plane.

The axle box positioning and temperature measuring heat conducting sheath B-3 and the vibration damping rubber ring B-1 are respectively of an annular structure formed by buckling two semi-rings, the outer wall of the axle box positioning and temperature measuring heat conducting sheath B-3 is provided with two heat conducting sheath protrusions B-3-2 which are arranged along the circumferential outer side wall, the inner side wall of the vibration damping rubber ring B-1 is provided with two axle box vibration damping ring clamping grooves B-1-2 which are arranged along the circumferential inner wall, each heat conducting sheath protrusion B-3-2 is embedded into one corresponding axle box vibration damping ring clamping groove B-1-2, and the axle box positioning and temperature measuring heat conducting sheath B-3 is limited in the vibration damping rubber ring B-1 along the axial direction; the annular vibration reduction axle box B is arranged below the end part of the cantilever section A-1-2 of the wing-shaped side beam of the bird by matching a semi-annular shell B-4 with a semi-ring clamp type axle box hanging seat A-8.

An axle mounting hole D-1-1 and a motor coupler mounting hole D-1-2 are formed in the middle of a gearbox shell D-1 of the easy-to-withdraw shaft type gearbox D, four motor flexible suspension rubber node seat holes D-2 distributed according to an isosceles trapezoid are fixedly connected to the same side of the gearbox shell D-1 on the periphery of the motor coupler mounting hole D-1-2, the included angle beta between the center of each of the two lower motor flexible suspension rubber node seat holes D-2 and the hole center connecting line of the motor coupler mounting hole D-1-2 is 100-140 degrees, and the optimal value is 120 degrees; a gear box shell vertical stop block D-4 is fixedly connected to the outer side wall of the gear box shell D-1 at the intersection of an extension line of a central connecting line of the axle mounting hole D-1-1 and the motor coupling mounting hole D-1-2 and the gear box shell D-1; the outer side wall of the gearbox shell D-1 below the gearbox shell vertical stop block D-4 is fixedly connected with a shell vertical hanging rod seat D-3, and two ends of a gearbox hanging rod H are respectively provided with a rubber vibration damping gasket for elastically connecting the shell vertical hanging rod seat D-3 with a gearbox hanging seat A-6.

The lower part of the rear end cover of the side beam single-point suspension type motor E shell is fixedly connected to a motor single-point suspension seat A-9 through a side beam end motor suspension rubber node E-1 and a motor suspension rubber node semi-ring hoop E-2, the upper part of the rear end cover of the side beam single-point suspension type motor E shell is fixedly connected with a horizontal motor vertical cantilever stop rod E-4, the motor vertical cantilever stop rod E-4 is suspended right above a motor vertical limiting stop A-10, and the range of the gap value of the motor vertical limiting stop rod E-4 and the motor vertical limiting stop rod A-10 is 10-50 mm; a motor shell on the side beam single-point suspension type motor E at the end where the motor output shaft is located is fixedly connected to four motor flexible suspension rubber node seat holes D-2 through four motor flexible suspension rubber nodes D-5 in an elastic suspension mode respectively, and the motor output shaft of the side beam single-point suspension type motor E is rotatably connected to a reduction gear mechanism inside the motor coupler mounting hole D-1-2 through a coupler E-3.

The integrated damping type swing bolster and secondary suspension system F comprises a swing bolster F-1, two secondary air springs F-2 arranged below two bolster beams, two traction pull rods F-3, a transverse shock absorber F-4 arranged below the bolster beams, two vertical shock absorbers F-5 and two side bearings F-6; the swing bolster F-1 is of a box-shaped structure, an inner cavity of the swing bolster F-1 is used as an air chamber of two sleeper beam underlying secondary air springs F-2, and the bottoms of two ends of the swing bolster F-1 are provided with interfaces connected with air inlets and air outlets of the two sleeper beam underlying secondary air springs F-2; two end parts of the swing bolster F-1 are fixedly connected with two swing bolster traction pull rod seats F-1-1 which are suspended downwards in a rotational symmetry manner around the mass center of the swing bolster F-1, the lower end surface of the middle part of the swing bolster F-1 is fixedly connected with a transverse damper seat F-1-2, the side wall of the middle part of the swing bolster F-1 is fixedly connected with two vertical damper seats F-1-3 in a rotational symmetry manner, one side of the side wall of the middle part of the swing bolster F-1, which is close to the swing bolster traction pull rod seat F-1-1, is fixedly connected with two swing bolster transverse stop seats F-1-4 in a rotational symmetry manner, and the center of the swing bolster F-1 is provided with a center pin hole F-1-5;

the two sleeper beam underlying secondary air springs F-2 are correspondingly placed on the two overhead spring mounting seats A-3 one by one and are positioned at the bottoms of two ends of the swing bolster F-1; one end of each of the two traction pull rods F-3 is fixedly connected to the swing bolster traction pull rod seat F-1-1 through a rubber node, and the other end of each of the two traction pull rods F-3 is fixedly connected to the two framework traction pull rod seats A-4 through a rubber node; one end of a horizontal shock absorber F-4 with a lower sleeper beam is fixedly connected to the horizontal shock absorber seat F-1-2 through a rubber node, and the other end of the horizontal shock absorber F-4 is fixedly connected to a corresponding framework horizontal shock absorber seat A-13 through a rubber node; one ends of the two vertical shock absorbers F-5 are fixedly connected to the vertical shock absorber seats F-1-3 through rubber nodes, and the other ends of the two vertical shock absorbers F-5 are fixedly connected to the framework vertical shock absorber seats A-11 through rubber nodes; two side bearings F-6 are fixedly connected to the upper end face of the swing bolster F-1 and are positioned right above the two sleeper beams underlying secondary air springs F-2.

The outer diameter of a gear box mounting shaft section d-1 of the axle d is reduced to 80 percent of the original value to form a small-diameter gear box mounting shaft section d-3; the inside of the easy-to-withdraw shaft type gear box D also comprises an easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve D-7 and two large gear bearing end covers D-6 provided with screw hole arrays;

the inner diameter of the radial thickening sleeve D-7 of the inner ring of the easy-to-withdraw shaft type large gear bearing is the same as the outer diameter of the mounting shaft section D-3 of the small-diameter gear box, and the two are coaxially and fixedly connected through press mounting; a bull gear bearing inner ring s-3-1 on the bull gear bearing s-3 is coaxially fixedly connected on the outer diameter of the easy-to-withdraw shaft type bull gear bearing inner ring radial thickening sleeve D-7 through press fitting; the end face of the radial outer circumference of the radial thickening sleeve D-7 of the inner ring of the easy-to-withdraw shaft type large gear bearing is provided with a screw hole array arranged along the radial direction of the easy-to-withdraw shaft type large gear bearing, two large gear bearing end covers D-6 are respectively and fixedly connected to the front end face and the rear end face of the radial thickening sleeve D-7 of the inner ring of the easy-to-withdraw shaft type large gear bearing through bolt groups arranged along the circumference, and the front end face and the rear end face of the large gear bearing s-3 are sealed in the axle mounting hole D-1-1; the flange of the gear box electric brush mechanism D-8 is coaxially and fixedly connected with the corresponding screw hole on the outer diameter side wall of the axle mounting hole D-1-1 through a plurality of bolts.

When the bogie based on the easy-to-withdraw shaft type gear box and the side beam single-point suspension type motor is specifically applied, the included angle beta between the center of each of the two motor flexible suspension rubber node seat holes D-2 positioned below and the hole center connecting line of the motor coupler mounting hole D-1-2 is set to be 120 degrees.

Claims

1. The bogie comprises a framework (A) and a wheel pair device consisting of wheels (c) and an axle (d), wherein the framework (A) comprises two framework side beams (A-1) and two framework cross beams (A-2), the framework side beams (A-1) comprise side beam middle sections (A-1-1) which are used as two bird wing connecting parts and are positioned at lower positions and two bird wing-shaped side beam cantilever sections (A-1-2) which are symmetrically fixedly connected to the two ends of the side beam middle sections (A-1-1), and the bird wing-shaped side beam cantilever sections (A-1-2) are formed by connecting an upward tilted section and a horizontal extending section which extends horizontally and outwards;

the bogie is characterized by further comprising four annular vibration reduction axle boxes (B), an easy-to-withdraw axle type gear box (D), a side beam single-point suspension type motor (E), an integrated vibration reduction type swing bolster and a secondary suspension system (F);

the framework side beam (A-1) and the framework cross beam (A-2) are of a cast integrated structure, and the framework (A) further comprises two framework spring mounting seats (A-3), two framework traction pull rod seats (A-4), two framework transverse stopping seats (A-5), two side beam self-provided gear box hanging seats (A-6), two gear box vertical stopping seats (A-7), four semi-ring clamp type shaft box hanging seats (A-8), two motor single-point hanging seats (A-9), two motor vertical limiting stopping seats (A-10), two framework vertical vibration damper seats (A-11), four antenna beam hanging seats (A-12) and two framework transverse vibration damper seats (A-13);

two framework spring mounting seats (A-3) are symmetrically and fixedly connected to the upper end of the middle part of the side beam middle section (A-1-1), two framework traction pull rod seats (A-4) are rotationally and symmetrically and fixedly connected to the outer side wall of the middle part of the side beam middle section (A-1-1), and two framework transverse stopping seats (A-5) are rotationally and symmetrically and fixedly connected to the upper end of the bird wing-shaped side beam cantilever section (A-1-2); the two gearbox hanging seats (A-6) and the vertical gear box stopping blocks (A-7) are sequentially and respectively rotationally and symmetrically fixedly connected to the inner side walls of the bird wing-shaped side beam cantilever sections (A-1-2) below the root parts of the framework transverse stopping seats (A-5) from top to bottom; two motor single-point suspension seats (A-9), two motor vertical limit stoppers (A-10) and two framework vertical shock absorber seats (A-11) are respectively and rotationally symmetrically fixedly connected to the inner side wall of the lower part of the inclined section of the wing-shaped side beam cantilever section (A-1-2), the two motor single-point suspension seats (A-9) are rotationally symmetrically fixedly connected to the bottom of the lower end face of the inclined section of the wing-shaped side beam cantilever section (A-1-2), and the two motor vertical limit stoppers (A-10) are rotationally symmetrically fixedly connected to the upper end of the junction of the inclined section and the horizontal extending section of the wing-shaped side beam cantilever section (A-1-2); four antenna beam hanging seats (A-12) are arranged on the outer side wall of the farthest end of each bird wing-shaped side beam cantilever section (A-1-2), four semi-ring clamp type axle box hanging seats (A-8) are arranged at the bottom of the far end of each bird wing-shaped side beam cantilever section (A-1-2), and a sensor mounting hole (A-8-1) is formed in the upper end face of each semi-ring clamp type axle box hanging seat (A-8); the transverse shock absorber seat (A-13) is fixedly connected with the middle section of the upper end surface of a corresponding framework beam (A-2);

two annular damping axle boxes (B) are arranged on the inner sides of the wheels (c) and are coaxially and rotatably connected with the two ends of the axle (d), each annular damping axle box (B) comprises an axle bearing (B-2), the axle box positioning and temperature measuring heat conducting sheath (B-3) and the vibration damping rubber ring (B-1), the axle box positioning and temperature measuring heat conducting sheath (B-3) is coaxially and fixedly connected with the outer ring of the axle bearing (B-2), the inner ring of the axle bearing (B-2) is coaxially and fixedly pressed and connected with the two ends of an axle (d), the upper parts of the axle box positioning and temperature measuring heat conducting sheath (B-3) and the vibration damping rubber ring (B-1) are respectively provided with a socket for positioning a temperature sensor (G), and the position of the socket corresponds to a sensor mounting hole (A-8-1) on the upper end face of the cantilever section (A-1-2) of the bird wing-shaped side beam;

the easy-to-withdraw shaft type gear box (D) is pressed on a gear box mounting shaft section (D-1) of the axle (D), and one side of the easy-to-withdraw shaft type gear box (D) is connected to a gear box hanging seat (A-6) through a gear box hanging rod (H);

one side of a side beam single-point suspension type motor (E) is fixedly connected to a motor single-point suspension seat (A-9), and the other side of the side beam single-point suspension type motor (E) is elastically connected with an easy-to-withdraw shaft type gear box (D) in a rubber node suspension mode;

the integrated vibration damping type swing bolster and the secondary suspension system (F) are positioned above the framework (A) and are correspondingly connected with the framework (A).

2. The bogie based on the easy-to-withdraw shaft type gearbox and the side beam single-point suspension type motor according to claim 1, wherein the central connecting line of the shell socket (B-3-1) of the axle box positioning and temperature measuring heat conducting sheath (B-3) and the rubber ring blind hole socket (B-1-1) of the damping rubber ring (B-1) forms an angle of 60 degrees with the horizontal plane.

3. The bogie based on the easy-to-retract shaft type gearbox and the side beam single-point suspension type motor as claimed in claim 1, the temperature-measuring and locating device is characterized in that the axle box locating and temperature-measuring heat-conducting sheath (B-3) and the vibration-damping rubber ring (B-1) are respectively of an annular structure formed by buckling two semi-rings, the outer wall of the axle box locating and temperature-measuring heat-conducting sheath (B-3) is provided with two heat-conducting sheath protrusions (B-3-2) arranged along the circumferential outer side wall, the inner side wall of the vibration-damping rubber ring (B-1) is provided with two axle box vibration-damping ring clamping grooves (B-1-2) arranged along the circumferential inner wall, each heat-conducting sheath protrusion (B-3-2) is embedded into one corresponding axle box vibration-damping ring clamping groove (B-1-2), and the axle box locating and temperature-measuring heat-conducting sheath (B-3) is axially limited in the vibration-damping rubber ring (B-1); the annular damping axle box (B) is arranged below the end part of the cantilever section (A-1-2) of the bird wing-shaped side beam through the matching of a semi-annular shell (B-4) and a semi-ring clamp type axle box hanging seat (A-8).

4. The bogie based on the easy-to-withdraw shaft type gearbox and the side beam single-point suspension type motor as claimed in claim 1, wherein an axle mounting hole (D-1-1) and a motor coupler mounting hole (D-1-2) are formed in the middle of a gearbox shell (D-1) of the easy-to-withdraw shaft type gearbox (D), four motor flexible suspension rubber node seat holes (D-2) distributed in an isosceles trapezoid are fixedly connected to the same side of the gearbox shell (D-1) on the periphery of the motor coupler mounting hole (D-1-2), an included angle beta between the center of each of the two lower motor flexible suspension rubber node seat holes (D-2) and a hole center connecting line of the motor coupler mounting hole (D-1-2) is 100-140 degrees, and the optimal value is 120 degrees; a gear box shell vertical stop block (D-4) is fixedly connected to the outer side wall of the gear box shell (D-1) at the intersection of the extension line of the central connecting line of the axle mounting hole (D-1-1) and the motor coupling mounting hole (D-1-2) and the gear box shell (D-1); the outer side wall of the gearbox shell (D-1) below the vertical stop block (D-4) of the gearbox shell is fixedly connected with a shell vertical lifting rod seat (D-3), and two ends of a gearbox lifting rod (H) are respectively provided with a rubber vibration reduction gasket which is used for elastically connecting the shell vertical lifting rod seat (D-3) with the gearbox lifting seat (A-6).

5. The bogie based on the easy-to-withdraw shaft type gearbox and the side beam single-point suspension type motor as claimed in claim 4, wherein the lower part of the rear end cover of the side beam single-point suspension type motor (E) shell is fixedly connected to the motor single-point suspension seat (A-9) through a side beam end motor suspension rubber node (E-1) and a motor suspension rubber node semi-ring clamp (E-2), the upper part of the rear end cover of the side beam single-point suspension type motor (E) shell is fixedly connected with a horizontal motor vertical cantilever stop rod (E-4), the motor vertical cantilever stop rod (E-4) is suspended right above a motor vertical limit stop (A-10), and the gap value range of the two is 10-50 mm; a motor shell at the end of a motor output shaft on a side beam single-point suspension type motor (E) is fixedly connected to four motor flexible suspension rubber node seat holes (D-2) in an elastic suspension mode through four motor flexible suspension rubber nodes (D-5), and the motor output shaft of the side beam single-point suspension type motor (E) is rotatably connected to a reduction gear mechanism inside a motor coupler mounting hole (D-1-2) through a coupler (E-3).

6. The bogie based on the easy-to-withdraw axle type gearbox and the side beam single-point suspension type motor according to claim 1, wherein the integrated vibration-damping bolster and secondary suspension system (F) comprises a bolster (F-1), two secondary air springs (F-2) under the two bolsters, two traction pull rods (F-3), a lateral vibration damper (F-4) under the bolsters, two vertical vibration dampers (F-5) and two side bearings (F-6); the swing bolster (F-1) is of a box-shaped structure, an inner cavity of the swing bolster is used as an air chamber of the secondary air spring (F-2) with two underlying sleeper beams, and the bottoms of the two ends of the swing bolster (F-1) are provided with interfaces connected with air inlets and air outlets of the secondary air spring (F-2) with two underlying sleeper beams; two end parts of the swing bolster (F-1) are fixedly connected with two swing bolster traction pull rod seats (F-1-1) which are hung downwards in a rotational symmetry manner around the mass center of the swing bolster (F-1), the lower end surface of the middle part of the swing bolster (F-1) is fixedly connected with a transverse damper seat (F-1-2), the side wall of the middle part of the swing bolster (F-1) is fixedly connected with two vertical damper seats (F-1-3) in a rotational symmetry manner, one side of the side wall of the middle part of the swing bolster (F-1), which is close to the swing bolster traction pull rod seat (F-1-1), is fixedly connected with two swing bolster transverse stop seats (F-1-4) in a rotational symmetry manner, and the center of the swing bolster (F-1) is provided with a center pin hole (F-1-5);

the two sleeper beam underlying secondary air springs (F-2) are correspondingly arranged on the two overhead spring mounting seats (A-3) one by one and are positioned at the bottoms of the two ends of the swing bolster (F-1); one end of each of the two traction pull rods (F-3) is fixedly connected to the swing bolster traction pull rod seat (F-1-1) through a rubber node, and the other end of each of the two traction pull rods (F-3) is fixedly connected to the two framework traction pull rod seats (A-4) through a rubber node; one end of a horizontal shock absorber (F-4) arranged below the sleeper beam is fixedly connected to the horizontal shock absorber seat (F-1-2) through a rubber node, and the other end of the horizontal shock absorber is fixedly connected to a corresponding framework horizontal shock absorber seat (A-13) through a rubber node; one ends of the two vertical shock absorbers (F-5) are fixedly connected to the vertical shock absorber seats (F-1-3) through rubber nodes, and the other ends of the two vertical shock absorbers are fixedly connected to the framework vertical shock absorber seats (A-11) through rubber nodes; two side bearings (F-6) are fixedly connected with the upper end surface of the swing bolster (F-1) and are positioned right above the two sleeper beams underlying secondary air springs (F-2).

7. The bogie based on the easy-to-withdraw shaft type gearbox and the side beam single-point suspended type motor according to claim 1, wherein the outer diameter of the gearbox mounting shaft section (d-1) of the axle (d) is reduced to 80% of the original value to form a small-diameter gearbox mounting shaft section (d-3); the inside of the easy-to-withdraw shaft type gear box (D) also comprises an easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve (D-7) and two large gear bearing end covers (D-6) provided with screw hole arrays;

the inner diameter of the radial thickening sleeve (D-7) of the inner ring of the easy-to-withdraw shaft type large gear bearing is the same as the outer diameter of the small-diameter gear box mounting shaft section (D-3), and the inner diameter and the outer diameter are coaxially and fixedly connected through press mounting; a bull gear bearing inner ring (s-3-1) on the bull gear bearing (s-3) is coaxially and fixedly connected on the outer diameter of the axial-direction thickening sleeve (D-7) of the easy-to-withdraw shaft type bull gear bearing inner ring through press fitting; the radial outer circumferential end face of the easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve (D-7) is provided with a screw hole array which is arranged along the radial direction of the easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve, two large gear bearing end covers (D-6) are fixedly connected to the front end face and the rear end face of the easy-to-withdraw shaft type large gear bearing inner ring radial thickening sleeve (D-7) through bolt groups which are arranged along the circumferential array respectively, and the front end face and the rear end face of the large gear bearing (s-3) are sealed in the axle mounting hole (D-1-1); the flange plates of the gear box electric brush mechanism (D-8) are coaxially and fixedly connected with corresponding screw holes on the outer diameter side wall of the axle mounting hole (D-1-1) through a plurality of bolts.