CN112046536B - Bogie based on novel motor suspension structure and flexible interconnection framework - Google Patents

Abstract

The bogie based on the novel motor suspension structure and the flexible interconnection framework belongs to the field of power bogie devices of railway vehicles, and comprises a wheel pair device formed by wheels and axles, a transverse and longitudinal integrated flexible interconnection framework, an easy-to-withdraw shaft type gearbox and a side beam single-point suspension type motor. The invention greatly reduces the vibration reduction requirement on the whole framework, and has the effects of reducing the number of parts and failure rate, releasing the layout space of the motor and the gear box and maintaining the operation allowance, simplifying the size of the framework and simplifying the manufacturing flow; the invention enables the side beam single-point suspension motor to be independently dismantled from the lower part of the vehicle body directly through the maintenance trench after the four motor flexible suspension rubber joints and the fastening bolts of the side beam end motor suspension rubber joints are respectively dismantled.

Description

Bogie based on novel motor suspension structure and flexible interconnection framework

Technical Field

The invention belongs to the field of power bogie devices of railway vehicles, and particularly relates to a bogie based on a novel motor suspension structure and a flexible interconnection framework.

Background

The railway train bogie is designed by comprehensively considering the structural strength and flexibility of a framework serving as a bearing main body, the action effect of various auxiliary vibration reduction components such as an anti-meandering vibration damper, the installation mode of a braking mechanism and other comprehensive factors, and comprehensively designing a plurality of factors such as the suspension mode of a motor of the power bogie, the placement position of an axle box on an axle, the layout space of the motor and a gear box thereof according to the theoretical speed per hour, the bearing load, the minimum curve curvature, the road conditions such as snow and flying stones and the like of the train according to different vehicle type requirements. Various design schemes developed around the core ideas are increasingly improved and complicated, so that iterative updating and continuous progress of the manufacturing level of the power bogie are finally promoted, framework schemes of different vehicle types are promoted to be new, and some new schemes even completely overtake old ideas, so that the core improvement has obvious differences and innovations.

As shown in fig. 1 and 2, the framework of the bogie of the railway carriage can be divided into a welded framework formed by welding a plurality of plate members and a cast framework formed by integral casting, but the integral structure of the welded framework and the cast framework is a framework which is formed by a cross beam body and two side beams together and takes the shape of a letter H in plan view, the geometric center of the framework is a whole cross beam body H or a cross beam body g which is a cross beam body g in a cross beam shape, the two cross beam bodies are used for forming a short cross beam in the middle of the letter H stroke structure, and the two side beams are symmetrically arranged at the two ends of the cross beam body left and right; the cross beam body is composed of two small cross beams perpendicular to the side beams. As shown in fig. 1, for a welded side beam with a box structure formed by assembling and splicing a plurality of plates, a weldment side beam i is generally a wing-shaped structure with two wings upturned, and a weldment wheel axle seat i-2 is correspondingly welded and fixedly connected to the lower end face of a wing root position inclined plane i-1 of each wing-shaped structure. Each weld side beam spring cap barrel i-3 is welded to the tip end of one weld side beam i. Because the side beam upper cover plate and the side beam lower cover plate of the side beam i of the welding piece and the side wall plates i-4 of the two welding piece clamped between the side beam upper cover plate and the side beam lower cover plate of the side beam i of the welding piece and the side wall plates i-4 of the two welding piece are of special wing-shaped structures matched with the side wall plates i-4 of the side beam of the welding piece, the clamping and positioning operation of the whole assembly welding of the side beam i of the welding piece is relatively complex, a large number of positioning fixtures are needed in the manufacturing process to ensure that the side wall plates i-4 of the side beam of the welding piece are respectively and vertically welded and fixedly connected with the lower cover plate of the side wall plates of the welding piece according to the parallel postures, and the positioning of a plurality of side wall plate connecting rib plates and the spring cap barrel i-3 of the side wall plates of the welding piece can be realized only by the complex positioning fixture with additional design. For example, china patent publication No. CN110722319A discloses a welding positioning tool for side beams of a railway carriage framework, and the disclosed complex positioning tool structure is additionally designed for improving the assembly positioning precision of side beam spring cap cylinder i-3 and other parts, reducing calibration mapping work, reducing labor intensity and other problems. In the same way, the process of positioning and welding the welding part wheel axle seat i-2 at the lower end of the inclined plane of the welding part side beam wing root part can be smoothly implemented only by specially designing a pairing positioning tool for the side beam forward welding as disclosed in China patent publication No. CN108817797A, and the design and the manufacture of the positioning tool can necessarily bring about great increase of the production cost. In the welding cooling process of the welding part side beam i, multi-directional distortion deformation with different dimensions can occur due to the influence of stress in the welding cooling process, so that the welding part side beam i is subjected to various asymmetric structural dimensional deviations such as stretching, twisting, tilting and the like, welding quality can be guaranteed only by additionally increasing correction and repair operations, particularly, a welding part side beam tube through hole i-5 serving as a positioning reference for subsequent processing is not subjected to coaxial alignment calibration and repair, a welding part cross beam tube g-1 cannot penetrate into the welding part side beam tube through hole, or two welding part cross beam tubes g-1 cannot be kept parallel, the positioning reference of the whole welding framework and subsequent machining precision are seriously influenced, even symmetrical parts such as an anti-meandering shock absorber cannot fully exert damping effect due to the fact that geometric symmetry is not possible, vibration characteristics of the framework are influenced, and the whole service life of the bogie is weakened. However, the maintenance operation requires a large amount of mapping and repeated secondary processing operations, and has heavy and complex workload and low efficiency. For the cast side beam shown in fig. 2, the cast side beam j and the whole cross beam h are integrally cast by a casting mould, so that the procedures 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 mechanical property of the cast steel is more rigid, and the flexibility of the cast side beam in elastic deformation is weakened, so that the cast side beam needs to be matched and designed into a more complex secondary damping system comprising a roll-resistant torsion bar and a snake-shaped damper.

On the other hand, as shown in fig. 1 and 2, a motor hanging seat t and a gear box hanging seat u are generally arranged on an integral beam body h or a cross beam body g of the existing power steering frame, and are respectively used for correspondingly and fixedly connecting a traction motor r and a gear box s, and reverse torques of the two motors are offset by adopting a double-motor installation mode of rotationally symmetrically arranging a front traction motor r and a rear traction motor r with the geometric center of the integral beam body h or the cross beam body g, so that the integral mechanical stability and the vibration balance characteristic of the power steering frame are optimized. However, the mounting mode of the rigid connection between the motor hanging seat t and the gear box hanging seat u by the aid of the integral beam body g or the cross beam body h in the cross shape is adopted, the layout positions and the welding manufacturing process of the motor hanging seat t and the gear box hanging seat u are higher in requirements on structural strength and symmetrical accuracy of the beam body, and most of space on the inner side of a conventional framework is occupied, so that the space of an axle box is lacking on the inner side of an existing bogie, a typical primary suspension device can be only arranged at two end parts of an axle, the damage risk is increased, the structural size and the turning radius of the whole bogie are increased, the minimum curve passing capacity of the bogie is improved, and as the lifting lug of the shell of the traction motor r is of a rigid structure which is not detachable, the lifting lug is interfered with the framework and the gear box structure to block each other, the traction motor r cannot be independently detached from the lower side of the vehicle body through a maintenance trench, the carriage above the framework is separated from the framework by a trolley machine, the traction motor r can be removed from the upper side of the framework, and the maintenance difficulty of the motor is greatly increased. Meanwhile, the rigidly connected motor hanging seat t and the gear box hanging seat u also lead the traction motor r and the gear box s to lack sufficient vibration reduction protection systems, so that accessory structures such as an anti-snake-shaped vibration damper, an anti-side rolling torsion bar n and the like are installed as necessary supplements.

In addition, different train design speed requirements or different side beam structural forms can also cause very big influence on the layout space and structural form of the motor and the gearbox, often result in that the requirement of the installation position cannot be met by the traditional layout scheme, and the design improvement of a brand new concept is made by the need of overriding the traditional reference scheme.

As shown in fig. 3 to 5, the existing large gear s-2 mounted inside the snap-fit type gearbox housing s-1 is directly press-fitted with the bearing outer ring s-3-2 on the large gear bearing s-3 to form an interference fit which is coaxially and fixedly connected, the existing large gear bearing s-3 is provided with a gear box mounting shaft section d-1 which is directly press-fitted with the large gear bearing inner ring s-3-1 on the large gear bearing s-3 to form an interference fit which is coaxially and fixedly connected, the coaxial fixedly connected form of the interference fit causes that the gear box mounting shaft section d-1, the gear box bearing s-3 and the large gear s-2 become an integral body which cannot be separated, and the structural strength of the snap-fit type gearbox housing s-1 is low, the existing large gear bearing s-3 cannot be directly used as an acting point of a release plate on an axle release press, and even if the existing large gear bearing inner ring is too narrow, the release plate on the release press is modified into a multi-jaw chuck form, and is inserted into the inside of the gearbox from an axle through hole on the axial side wall of the gearbox, the gear box is still insufficient in a radial acting point to cause that the large gear bearing s-3 can be reliably carried out with the integral gear bearing s-3, and thus the integral release of the large gear s-3 must be directly and the large gear s-3 must be released from the integral state and the inner ring s-3 must be directly released from the integral state of the release press-1, and the integral release is carried out to the integral bearing s-2 must be directly, and the integral bearing can be released from the integral bearing is directly and released from the integral bearing has the inner bearing s2 and the effect can be directly as a large gear case has a problem as a necessary condition and a release integral state can be directly released directly and directly released from the integral state directly and a release state and a release integral pump and a release gear pump and a pump and a release device can be required, and then transferred to the wheel axle withdrawal pressure machine to finish withdrawal and replacement operations. The method is complex in process, time-consuming and labor-consuming, and can not be used for independently removing and replacing the axle d on the premise that the large gear s-2 is not removed from the buckling spliced gearbox housing s-1, and also can not be used for independently removing the axle d and directly carrying out operations such as overhauling, lubricating and maintaining on the large gear s-2 in the gearbox housing s-1 from a hole left after the axle d is removed on the premise that the buckling state of the buckling spliced gearbox housing s-1 is maintained.

The mid-plane refers to a virtual geometric plane that can symmetrically divide an object having a symmetrical structure into two parts that are mirror images of each other.

Disclosure of Invention

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

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

2) The positioning process of the plurality of side wall plate connecting rib plates of the welding side beam and the welding side beam spring cap barrel can be realized only by a complex positioning tool which is additionally designed; the welding quality can be barely ensured by correcting and repairing operations additionally added to correct various asymmetric structural size deviations such as stretching, twisting, tilting and the like in different dimensions and directions in the welding and cooling process; especially, the through hole of the beam tube of the welding part side beam serving as a positioning reference for subsequent processing must be subjected to coaxial alignment calibration and adjustment, otherwise, the beam tube of the welding part cannot penetrate into the through hole, or the two beam tubes of the welding part cannot be kept parallel, so that the positioning reference and the subsequent machining precision of the whole welding framework are seriously affected, even symmetrical parts such as a side rolling torsion bar and an anti-meandering shock absorber cannot fully exert damping effect due to incapability of geometric symmetry, further the vibration characteristic of the framework is affected, and the whole service life of the bogie is weakened.

3) On the other hand, by means of the motor installation mode of the whole beam body or the cross beam body and being completely and 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 not only put forward higher requirements on the structural strength and the symmetrical precision of the beam body, but also occupy most of the space on the inner side of a conventional framework, so that the inner side of the conventional bogie lacks enough axle box layout space, and a typical primary suspension device can be only arranged at two ends of an axle, thereby not only increasing the damage risk of the axle box, but also increasing the structural size and the turning radius of the whole bogie and being unfavorable for improving the minimum curve passing capacity of the bogie.

4) Because the lifting lug of the traction motor shell is of a non-removable rigid structure, when the lifting lug is interfered with the framework and the gear box, the traction motor can not be directly and independently removed from the lower part of the vehicle body through a maintenance trench, and a vehicle lifting machine is needed to separate a carriage above the framework from the framework, so that the traction motor can be disassembled from the upper part of the framework, and the difficulty of motor maintenance and replacement is greatly increased.

5) The large gear arranged in the buckling and splicing type gear box shell is pressed and assembled with the gear box mounting shaft section of the axle through the large gear bearing to form an interference fit to form a coaxial and fixedly connected mode, so that the gear box mounting shaft section, the gear box bearing and the large gear are formed into an integral body which cannot be separated, and due to the fact that the structural strength of the buckling and splicing type gear box shell is low, the large gear cannot be directly used as an acting point of a dismounting baffle on an axle dismounting pressure machine, moreover, the bearing inner ring of the existing large gear bearing is too narrow, so that even if the dismounting baffle on the axle dismounting pressure machine is modified into a multi-claw chuck mode, the dismounting baffle is inserted into the gear box from an axle through hole in the axial side wall of the gear box, the radial dismounting blocking acting force cannot be reliably implemented on the inner ring of the large gear bearing due to the lack of enough radial acting force, and therefore, when the axle dismounting cannot be directly implemented, the factors cause that the axle or the large gear is required to be conveniently and quickly dismounted on the premise that the large gear is not dismounted from the gear box shell, and the dismounting and the axle is required to be replaced on the premise that the condition that the large gear is not dismounted from the buckling and splicing type gear box shell is not to be dismounted, and the problem that the gear box is directly dismounted from the axle is maintained.

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

the bogie based on the novel motor suspension structure and the flexible interconnection framework comprises a wheel pair device formed by wheels and axles, and is characterized by further comprising a transverse and longitudinal integrated flexible interconnection framework, an easy-to-withdraw shaft type gearbox and a side beam single-point suspension type motor;

The transverse and longitudinal integrated flexible interconnection framework comprises two transverse and longitudinal integrated frameworks which are rotationally symmetrical, and each transverse and longitudinal integrated framework comprises an integrated side beam and an integrated cross beam which are integrally formed; the integrated side beam comprises a side beam middle section serving as two wing connecting parts and positioned at a lower position and two wing-shaped side beam cantilever sections symmetrically fixedly connected to two ends of the side beam middle section, wherein each wing-shaped side beam cantilever section is formed by connecting an upward-tilting inclined section and a horizontal extension section extending horizontally and outwards; the integrated cross beam and the middle section of the integrated side beam are integrally formed in a casting mode in an included angle posture of an alpha angle; the value range of the included angle alpha is 60 to 90 degrees;

Each transverse and longitudinal integrated framework further comprises a side beam self-carrying gear box hanging seat, a gear box vertical stop, a motor single-point hanging seat, a motor vertical limit stop, a flexible interconnection connecting mechanism and an interconnection butt joint seat, wherein the interconnection butt joint seat and the integrated cross beam are symmetrically distributed on the left side and the right side of a vertical surface in the middle section of the side beam, and the flexible interconnection connecting mechanism is inserted into the interconnection butt joint seat and fixedly connected with the interconnection butt joint seat;

the gear box hanging seat and the gear box vertical stop are sequentially and fixedly connected to the inner side wall of the cantilever section of the wing-shaped side beam from top to bottom; the motor single-point suspension seat and the motor vertical limit stop are both positioned on the wing-shaped side beam cantilever section adjacent to one side where the interconnection butt joint seat is positioned, wherein the motor single-point suspension seat is fixedly connected to the bottom of the lower end face of the wing-shaped side beam cantilever section inclined section, and the motor vertical limit stop is fixedly connected to the upper end of the junction of the wing-shaped side beam cantilever section inclined section and the horizontal extension section;

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

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

The two transverse and longitudinal integrated frameworks are symmetrically arranged in a circumferential rotation symmetrical layout mode, and are flexibly connected with the flexible interconnection connecting mechanism on the other integrated side beam through the end heads of the respective integrated cross beams, so that the transverse and longitudinal integrated flexible interconnection frameworks are formed together.

The middle part of a gear box shell of the easy-to-withdraw shaft type gear box is provided with an axle mounting hole and a motor coupling mounting hole, four motor flexible suspension rubber node seat holes distributed according to isosceles trapezoids are fixedly connected on the same side of the gear box shell around the motor coupling mounting hole, the included angle beta between the centers of the two motor flexible suspension rubber node seat holes positioned below and the connecting line of the hole centers of the motor coupling mounting hole is 100-140 degrees, and the optimal value is 120 degrees; a vertical stop block of the gear box shell is fixedly connected to the outer side wall of the gear box shell at the intersection of the extension line of the central connecting lines 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 rubber vibration reduction gaskets are arranged at two ends of the hanging rod of the gear box and are used for elastically connecting the vertical hanging rod seat of the shell with the hanging seat of the gear box.

The lower part of the rear end cover of the side beam single-point suspension 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 motor shell is fixedly connected with a horizontal motor vertical cantilever stop lever, and the motor vertical cantilever stop lever is suspended above a motor vertical limiting stop, and the gap value range of the motor vertical cantilever stop lever and the motor vertical limiting stop lever is 10-50 mm; the motor shell at the end of the motor output shaft of the side beam single-point suspension motor is fixedly connected to the 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 motor is rotationally connected to a reduction gear mechanism in the motor coupling mounting hole through a coupling.

The outer diameter of the gear box installation shaft section of the axle is reduced to 80% of the original value, so that a small-diameter gear box installation shaft section is formed; 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 large gear bearing on the large gear bearing is coaxially and fixedly connected to the outer diameter of the radial thickening sleeve of the inner ring of the large gear bearing of the easy-to-retract shaft type through press fitting; the end covers of the two large gear bearings 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-retract shaft type large gear bearing respectively through bolt groups along the circumferential arrays, and the front end face and the rear end face of the large gear bearing are sealed in axle mounting holes; the flange plates of the gear box electric brush mechanism are coaxially and fixedly connected with corresponding screw holes on the outer diameter side wall of the axle mounting hole through a plurality of bolts.

The flexible interconnection connection mechanism is a steel spring combined rubber node or a joint ball bearing.

The steel spring combined type rubber node comprises two steel spring node flanges, a rubber elastic mandrel and a double-layer steel spring ring set, wherein the double-layer steel spring ring set is coaxially sleeved on the outer diameter of the rubber elastic mandrel, and two ends of the double-layer steel spring ring set and the rubber elastic mandrel are respectively and fixedly connected with a corresponding steel spring node flange in a coaxial manner; the double-layer steel spring ring group comprises a large-diameter outer ring steel spring and a small-diameter inner ring steel spring which are coaxially nested.

The joint ball bearing comprises a joint ball bearing side beam end connecting flange, a joint ball bearing cross beam end connecting flange, a ball bearing outer ring, a ball bearing inner ring, a ball bearing dustproof end cover, a buckling type ball socket retainer group and a self-lubricating ring groove ball hinge, wherein a ball socket is arranged in the buckling type ball socket retainer group, and the self-lubricating ring groove ball hinge is embedded into the ball socket of the buckling type ball socket retainer group and forms a rotary friction pair with the ball socket; the ball bearing inner ring is coaxially nested on the inner diameter side wall of the central shaft hole of the self-lubricating ring groove ball hinge and forms interference fit, and the ball bearing outer ring is coaxially nested on the outer diameter side wall of the buckling type ball socket retainer group and forms interference fit;

the connecting flange at the beam end of the spherical ball bearing is coaxially blocked on the rear end face of the central shaft hole of the spherical hinge of the self-lubricating ring groove and is used for being fixedly connected with the adjacent integrated beam through bolts; the connecting flange at the side beam end of the spherical joint bearing is coaxially plugged at the front ends of the buckled ball socket retainer group and the spherical hinge of the self-lubricating ring groove and is used for being fixedly connected with the adjacent interconnecting butt joint seat through bolts; the ball bearing dustproof end cover is fixedly connected to the outer end face of the joint ball bearing side beam end connecting flange through bolts.

The buckled ball socket retainer group comprises a first hemispherical socket retainer and a second hemispherical socket retainer which are identical and buckled and fixedly connected with each other, and a retainer circumferential ring groove is arranged on the outer diameter of the buckled circumferential boundary line of the first hemispherical socket retainer and the second hemispherical socket retainer; the bottom surface of the ring groove of the circumferential ring groove of the retainer is uniformly provided with a plurality of radial through holes of the retainer pointing to the mass center of the ball socket according to the same circumferential angle.

The outer spherical surface of the self-lubricating ring groove spherical hinge is provided with an equatorial plane ring groove which coincides with the axial middle vertical plane of the self-lubricating ring groove spherical hinge, the outer spherical surface of the self-lubricating ring groove spherical hinge is also provided with a plurality of weft ring grooves which form an included angle gamma with the plane of the equatorial plane ring groove, the included angle gamma is 10-50 degrees, and the optimal value of the included angle gamma is 30 degrees; the equatorial plane annular groove and the plurality of weft annular grooves are intersected at the spherical pole.

The beneficial effects of the invention are as follows:

the bogie based on the novel motor suspension structure and the flexible interconnection framework breaks through the limitations of the traditional structure and concept of the traditional bogie through various innovative layout designs, the main structure of each transverse and longitudinal integrated framework is composed of an integrated side beam and an integrated cross beam which are integrally formed through a casting process, the integrated cross beam is connected with the middle section of the integrated side beam in an included angle posture of an alpha angle, and the interconnection butt joint seat and the integrated cross beam are symmetrically distributed on the left side and the right side of a vertical plane in the middle section of the side beam. The two transverse and longitudinal integrated frameworks are symmetrically arranged in a circumferential rotation symmetrical layout mode, and are flexibly connected with the flexible interconnection connecting mechanism on the opposite integrated side beam through the end heads of the respective integrated cross beams, so that the transverse and longitudinal integrated flexible interconnection frameworks are formed together. The structure can adapt to track irregularity through flexible deflection, is favorable for reducing the wheel weight load shedding rate and enhancing the curve passing capacity of the framework. In the design scheme, the transverse and longitudinal integrated framework integrally formed by a casting process enables the main body structure of the subway bogie to avoid the procedures of parallel positioning and assembly welding of the traditional welded side beam wallboard. The flexible interconnection connecting mechanism can adopt flexible connecting parts with certain rigidity and elastic deformation capacity such as steel spring combined rubber nodes or joint ball bearings, and the technology of the flexible connecting parts combines two transverse and longitudinal integrated frame main structures symmetrically arranged in a circumferential rotation symmetrical layout mode, so that the original H-shaped frame form of the traditional bogie, which is used for vertically connecting two side beams through two thick cross beams, is changed, the two transverse and longitudinal integrated frames can automatically adapt to angular displacement such as mutual torsion, stretching, rolling and the like generated in the advancing process of the frames, and the structural dimensional deviation of various dissymmetry such as stretching, twisting, rolling and the like of different dimensions and directions in the welding cooling process is not required to be additionally corrected for the correction and repair operation of the traditional welding part cross beam pipe, thereby overcoming the inherent technological problem that the side beam cross beam assembly time must be corrected through heavy and complex mapping and repair operation in the welding process, and further greatly simplifying and optimizing the assembly operation flow between the side beams. The two transverse and longitudinal integrated frameworks are flexibly connected through the flexible interconnection connecting mechanism and symmetrically arranged in a circumferential rotation symmetrical layout mode, so that the vibration reduction requirement on the whole framework is greatly reduced, the effects of reducing the number of components and the failure rate, releasing the layout space of the motor and the gearbox and maintaining the operation allowance are achieved, the framework size is reduced, and the manufacturing flow is simplified.

The gearbox hanging seat and the gearbox vertical stop block are sequentially and fixedly connected to the inner side wall of the cantilever section of the wing-shaped side beam along the same plumb line, the easy-to-withdraw shaft type gearbox is coaxially arranged on the gearbox installation shaft section of the axle, the shell vertical hanging rod seat at the furthest end of the shell of the easy-to-withdraw shaft type gearbox is hung and connected to the gearbox hanging seat only through a gearbox hanging rod with rubber vibration reduction gaskets arranged at the upper end and the lower end, so that the maximum rotation moment is used for exerting anti-rotation resistance around the axle on the easy-to-withdraw shaft type gearbox, the vertical stop block of the gearbox shell positioned in the middle of the far end of the easy-to-withdraw shaft type gearbox is positioned above the vertical hanging rod seat of the shell, the rotation radius of the vertical stop block of the gearbox relative to the axle installation hole is slightly smaller than the rotation radius of the vertical hanging rod seat of the shell, a movable gap of about 100mm is kept between the vertical stop block of the gearbox and the vertical stop block of the gearbox shell, and the maximum rotation displacement of the vertical stop block of the gearbox shell is limited. On the other hand, similar to the suspension mode of the easy-to-withdraw shaft type gearbox, the motor single-point suspension seat, the motor vertical limit stop and the framework vertical shock absorber seat are all positioned on the wing-shaped side beam cantilever section adjacent to one side where the interconnection butt joint seat is positioned, the lower part of the rear end cover of the side beam single-point suspension 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 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 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 gearbox and the side beam single-point suspension motor ensures that the weight and vibration load of the gearbox and the side beam single-point suspension motor are completely borne by the integrated side beam and the axle. The design scheme not only reduces the occupation degree of the rigid large-size hanging seat structure to the inner side sub-space of the side beam of the framework, but also enables the built-in axle box of the axle-locking wheel set to be installed possibly. The design also reserves enough operation space for the disassembly and the overhaul of the gear box and the motor structure, greatly optimizes the assembly and disassembly scheme of the motor, and the easy-to-withdraw shaft type gear box is fixedly connected with four motor flexible suspension rubber node seat holes distributed according to isosceles trapezoids on the same side of a gear box shell around a motor coupling mounting hole of the gear box, the included angle beta between the centers of two motor flexible suspension rubber node seat holes positioned below and the connecting line of the hole centers of the motor coupling mounting hole is 100-140 degrees, and a framework traction pull rod seat is fixedly connected to the outer side wall of the middle part of a side beam.

The external diameter of the gear box installation shaft section on the original axle is reduced to 80% of the original value, so that a small-diameter gear box installation shaft section is formed; the newly added radial thickening sleeve of the inner ring of the easy-to-retract 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 fit mode, and the inner ring of the large gear bearing on the large gear bearing is coaxially fixedly connected on the outer diameter of the radial thickening sleeve of the inner ring of the easy-to-retract shaft type large gear bearing through press fit; according to the method, the originally too narrow inner ring of the large gear bearing in the radial direction is changed and thickened, so that after the dismounting baffle plate on the wheel shaft dismounting press is remodeled into a multi-jaw chuck type, the jaws of the multi-jaw chuck can be inserted into the gear box from the axle mounting hole on the axial side wall of the gear box, and the anti-play stopping acting force is uniformly and reliably applied to the axial outer end face of the radially thickened sleeve of the inner ring of the easy-dismounting shaft type large gear bearing, which is coaxially and fixedly connected with the inner ring of the large gear bearing, so that the operation processes of independently removing the axle and directly overhauling, lubricating and maintaining the large gear in the gear box shell from the hole left after the axle is dismounted are possible on the premise of not dismounting the large gear from the buckled spliced gear box shell.

The flexible interconnection connecting mechanism can be a steel spring combined rubber node or a joint ball bearing, and the two can flexibly and fixedly connect the end head of the integrated beam with the interconnection butt joint seat positioned at the middle section of the integrated side beam on the other transverse and longitudinal integrated frame in a flange and bolt connection mode. The flexible interconnection connecting mechanism is connected with the framework through the flange, so that the installation efficiency is improved, and meanwhile, the influence of welding deformation on the framework structure is avoided. The ball socket is arranged in the joint ball bearing buckling type ball socket retainer group, and the self-lubricating ring groove ball hinge is embedded into the ball socket of the buckling type ball socket retainer group and forms a rotary friction pair with the ball socket; the buckled ball socket retainer group comprises a first half ball socket retainer and a second half ball socket retainer which are identical and buckled and fixedly connected with each other, and a retainer circumferential ring groove is arranged on the outer diameter of the buckled circumferential boundary line of the first half ball socket retainer and the second half ball socket retainer; at least four radial through holes of the retainer, which are directed towards the mass center of the ball socket, are uniformly distributed on the bottom surface of the ring groove of the circumferential ring groove of the retainer according to the same circumferential angle. The outer spherical surface of the ball hinge of the self-lubricating ring groove is provided with an equatorial plane ring groove which coincides with the axial middle vertical plane of the ball hinge, the equatorial plane ring groove which is intersected with the spherical pole and the two weft ring grooves are respectively and independently encircled on the outer spherical surface of the ball hinge of the self-lubricating ring groove, a radial through hole of the retainer which points to the mass center of the ball socket can be used for filling lubricating oil or lubricating powder into the ball socket, in addition, when the buckled ball socket retainer group is made of metal or ceramic materials with higher hardness, and when the equatorial plane ring groove and the two weft ring grooves are embedded with carbon rod materials which generate the scale powder through friction, the equatorial plane ring groove and the two weft ring grooves distributed on the outer spherical surface of the ball hinge of the self-lubricating ring groove automatically rub the inner side wall of the buckled ball socket retainer group in the friction pair rotation process of the ball socket, so that the scale powder with a lubricating function is automatically generated through rotation and abrasion, and the ball socket self-lubricating function is achieved. The lubrication function can be achieved when the lubricating agent containing 3% -5% of molybdenum disulfide is injected into the inner parts of the equatorial plane ring grooves and the two weft ring grooves.

In the bogie based on the novel motor suspension structure and the flexible interconnection framework, in the process manufacturing index, the value range of an included angle alpha between the integrated cross beam and the integrated side beam is definitely set to be 60-90 degrees, and the optimal value of the included angle alpha is 90 degrees; the included angle beta between the centers of the two motor flexible suspension rubber node seat holes positioned below and the connecting line of the hole centers of the motor coupler mounting holes is 100-140 degrees, and the optimal value is 120 degrees; the included angle gamma between the outer spherical surface of the spherical hinge of the self-lubricating ring groove and the plane of the ring groove of the equatorial plane is 10-50 degrees, the optimal value is 30 degrees, the core data ranges are all optimal experience 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 crystallization and proof of research and development investment.

In addition, the bogie based on the novel motor suspension structure and the flexible interconnection framework is used as a brand-new bogie design form, the manufacturing schemes of the transverse and longitudinal integrated flexible interconnection framework, the easy-to-withdraw shaft type gearbox and the side beam single-point suspension type motor are all modularized, different module units can independently implement standardized production, and the realization of assembly line manufacturing is facilitated, 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 casting mold frame;

FIG. 3 is a schematic illustration of the assembly relationship of a prior art gearbox and axle;

FIG. 4 is a schematic illustration of the assembly relationship of the large gear and axle of FIG. 3;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

FIG. 6 is a schematic perspective view of a novel motor suspension and flexible interconnecting frame based bogie of the present invention;

FIG. 7 is a schematic view of the exploded construction of the truck of the present invention based on a new motor suspension and flexible interconnecting frame;

FIG. 8 is a schematic perspective view of a transverse and longitudinal integrated flexible interconnect frame of the present invention;

FIG. 9 is a schematic top view of a cross-machine flexible interconnect frame of the present invention;

FIG. 10 is a schematic view of an exploded construction of the integrated transverse and longitudinal flexible interconnect frame of the present invention;

FIG. 11 is a schematic view of the structure of the easy-to-retract shaft type gearbox and side beam single point suspension motor of the present invention;

FIG. 12 is a schematic view of the structure of the easy-to-retract shaft type gearbox of the present invention;

FIG. 13 is a schematic view of the structure of the easy-to-retract shaft type gearbox, side beam single point suspension motor and gearbox boom of the present invention;

FIG. 14 is a schematic view of the structure of the easy-to-retract shaft type gearbox and gearbox boom of the present invention;

FIG. 15 is a schematic view of the structure of the axle, easy-to-withdraw shaft type large gear bearing inner race radial thickening sleeve and large gear bearing end cap of the present invention;

FIG. 16 is a schematic axial cross-sectional view of an axle, a radially thickened sleeve of an inner race of a readily retractable axle type large gear bearing and a large gear bearing end cap of the present invention assembled;

FIG. 17 is a schematic view of the present invention utilizing a penetration multi-jaw chuck to withdraw an axle from a bull gear;

FIG. 18 is a schematic view of the structure of the flexible interconnect linkage and integrated beam of the present invention;

FIG. 19 is a schematic view of a flexible interconnect linkage of the present invention in the form of a steel spring composite rubber node;

FIG. 20 is a schematic axial cross-sectional view of the flexible interconnect coupling mechanism of the present invention as a spherical plain bearing;

FIG. 21 is a schematic view of an exploded view of the flexible interconnect coupling mechanism of the present invention as a spherical plain ball bearing;

FIG. 22 is a schematic view of the structure of the snap-fit ball cage assembly and the self-lubricating ring groove ball joint of the present invention;

FIG. 23 is a schematic axial cross-sectional view of a snap-fit ball and socket cage assembly of the present invention;

Fig. 24 is a schematic front view of a spherical hinge of a self-lubricating ring groove in the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings.

As shown in fig. 6 to 24, the bogie based on the novel motor suspension structure and the flexible interconnection framework comprises a wheel set device consisting of wheels c and axles D, and is characterized by further comprising a transverse and longitudinal integrated flexible interconnection framework A, an easy-to-retract shaft type gearbox D and a side beam single-point suspension type motor E;

the transverse and longitudinal integrated flexible interconnection framework A comprises two transverse and longitudinal integrated frameworks which are rotationally symmetrical, and each transverse and longitudinal integrated framework comprises an integrated side beam A-1 and an integrated cross beam A-2 which are integrally formed; the integrated side beam A-1 comprises a side beam middle section A-1-1 serving as a connecting part of two wings and positioned at a lower position and two wing-shaped side beam cantilever sections A-1-2 symmetrically fixedly connected to two ends of the side beam middle section A-1-1, wherein the wing-shaped side beam cantilever sections A-1-2 are formed by connecting an upward tilting section and a horizontal extension section extending horizontally and outwards; the integrated beam A-2 and the middle section of the integrated side beam A-1 are integrally formed in a casting mode in an included angle posture of an alpha angle; the value range of the included angle alpha is 60 to 90 degrees;

Each transverse and longitudinal integrated framework further comprises a side beam self-carrying gear box hanging seat A-6, a gear box vertical stop A-7, a motor single-point hanging seat A-9, a motor vertical limiting stop A-10, a flexible interconnection connecting mechanism A-14 and an interconnection butt joint seat A-15, wherein the interconnection butt joint seat A-15 and the integrated cross beam A-2 are symmetrically distributed on the left side and the right side of a vertical plane in the middle section A-1-1 of the side beam, and the flexible interconnection connecting mechanism A-14 is inserted into the interconnection butt joint seat A-15 and fixedly connected with the interconnection butt joint seat A-15;

The gear box hanging seat A-6 and the gear box vertical stop A-7 are sequentially and fixedly connected to the inner side wall of the wing-shaped side beam cantilever section A-1-2 from top to bottom; the motor single-point suspension seat A-9 and the motor vertical limit stop A-10 are both positioned on the wing-shaped side beam cantilever section A-1-2 adjacent to one side where the interconnection butt joint seat A-15 is positioned, wherein the motor single-point suspension seat A-9 is 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 motor vertical limit stop A-10 is 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 A-1-2;

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

The two transverse and longitudinal integrated frameworks are symmetrically arranged in a circumferential rotation symmetrical layout mode, and are flexibly connected with the flexible interconnection connecting mechanism A-14 on the other integrated side beam A-1 through the end heads of the integrated cross beams A-2, so that the transverse and longitudinal integrated flexible interconnection framework A is formed.

The middle part of a gear box shell D-1 of the easy-to-withdraw shaft type gear box D is provided with an axle mounting hole D-1-1 and a motor coupling mounting hole D-1-2, four motor flexible suspension rubber node seat holes D-2 distributed according to isosceles trapezoids are fixedly connected to the same side of the gear box shell D-1 on the periphery of the motor coupling mounting hole D-1-2, the included angle beta between the centers of the two motor flexible suspension rubber node seat holes D-2 positioned below and the connecting line of the hole centers of the motor coupling mounting hole D-1-2 is 100-140 degrees, and the optimal value is 120 degrees; 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 is fixedly connected with a vertical stop block D-4 of the gear box shell; the outer side wall of the gear box shell D-1 below the gear box shell vertical stop block D-4 is fixedly connected with a shell vertical suspender seat D-3, and rubber vibration reduction gaskets are arranged at two ends of the gear box suspender H and are used for elastically connecting the shell vertical suspender seat D-3 with the gear box suspender seat A-6.

The lower part of the rear end cover of the side beam single-point suspension 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 clamp E-2, the upper part of the rear end cover of the side beam single-point suspension motor E shell is fixedly connected with a horizontal motor vertical cantilever stop lever E-4, the motor vertical cantilever stop lever E-4 is suspended above a motor vertical limiting stop A-10, and the gap value range of the motor vertical cantilever stop lever E-4 and the motor vertical limiting stop A-10 is 10-50 mm; the motor shell of the side beam single-point suspension motor E, which is positioned at the end of the motor output shaft, 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 motor E is rotationally connected to a reduction gear mechanism inside a motor coupler mounting hole D-1-2 through a coupler E-3.

The outer diameter of a gear box installation shaft section d-1 of the axle d is reduced to 80% of an original value, so that a small-diameter gear box installation shaft section d-3 is formed; 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 small diameter gear box mounting shaft section D-3 are coaxially and fixedly connected through press fitting; the inner ring s-3-1 of the large gear bearing s-3 is coaxially and fixedly connected to the outer diameter of the radial thickening sleeve D-7 of the inner ring of the easy-to-retract shaft type large gear bearing through press fitting; the radial outer circumferential end face 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 which is radially arranged along the radial outer circumferential end face, the two large gear bearing end covers D-6 are respectively 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 along the circumferential array, and the front end face and the rear end face of the large gear bearing s-3 are sealed in an axle mounting hole D-1-1; the flange plates of the gear box electric brush mechanism D-8 are coaxially and fixedly connected to corresponding screw holes on the outer diameter side wall of the axle mounting hole D-1-1 through a plurality of bolts.

The flexible interconnection connection mechanism A-14 is a steel spring combined rubber node A-14a or a joint ball bearing A-14b.

The steel spring combined type rubber node A-14a comprises two steel spring node flanges A-14a-1, a rubber elastic mandrel A-14a-2 and a double-layer steel spring ring group A-14a-3, wherein the double-layer steel spring ring group A-14a-3 is coaxially sleeved on the outer diameter of the rubber elastic mandrel A-14a-2, and two ends of the double-layer steel spring ring group A-14a-3 and the rubber elastic mandrel A-14a-2 are respectively and coaxially fixedly connected with one corresponding steel spring node flange A-14 a-1; the double-layer steel spring ring set A-14a-3 comprises a large-diameter outer ring steel spring and a small-diameter inner ring steel spring which are coaxially nested.

The spherical joint bearing A-14b comprises a spherical joint bearing side beam end connecting flange A-14b-1, a spherical joint bearing cross beam end connecting flange A-14b-2, a spherical bearing outer ring A-14b-3, a spherical bearing inner ring A-14b-4, a spherical bearing dustproof end cover A-14b-5, a buckling type ball socket retainer group A-14b-6 and a self-lubricating ring groove ball hinge A-14b-7, wherein a ball socket is arranged in the buckling type ball socket retainer group A-14b-6, and the self-lubricating ring groove ball hinge A-14b-7 is embedded into a ball socket of the buckling type ball socket retainer group A-14b-6 and forms a rotating friction pair with the ball socket; the ball bearing inner ring A-14b-4 is coaxially nested on the inner diameter side wall of the central shaft hole of the self-lubricating ring groove ball hinge A-14b-7 and forms interference fit, and the ball bearing outer ring A-14b-3 is coaxially nested on the outer diameter side wall of the buckling type ball socket retainer group A-14b-6 and forms interference fit;

The connecting flange A-14b-2 at the beam end of the spherical ball bearing is coaxially plugged on the rear end face of the central shaft hole of the spherical hinge A-14b-7 of the self-lubricating ring groove, and the connecting flange A-14b-2 at the beam end of the spherical ball bearing is used for being fixedly connected with the adjacent integrated beam A-2 through bolts; the connecting flange A-14b-1 at the side beam end of the spherical joint bearing is coaxially plugged at the front ends of the ball retainer group A-14b-6 and the spherical hinge A-14b-7 of the self-lubricating ring groove, and the connecting flange A-14b-1 at the side beam end of the spherical joint bearing is fixedly connected with the adjacent interconnecting butt joint seat A-15 through bolts; the ball bearing dustproof end cover A-14b-5 is fixedly connected to the outer end face of the joint ball bearing side beam end connecting flange A-14b-1 through bolts.

The buckled ball socket retainer group A-14b-6 comprises a first half ball socket retainer A-14b-6a and a second half ball socket retainer A-14b-6b which are identical and buckled and fixedly connected with each other, and a retainer circumferential ring groove A-14b-6-1 is arranged on the outer diameter of the buckled circumferential boundary line of the two retainer halves; a plurality of radial through holes A-14b-6-2 of the retainer, which are directed to the center of mass of the ball socket, are uniformly distributed on the bottom surface of the circumferential groove A-14b-6-1 of the retainer according to the same circumferential angle.

The outer spherical surface of the spherical hinge A-14b-7 of the self-lubricating ring groove is provided with an equatorial plane ring groove A-14b-7-a1 which coincides with the axial middle vertical plane of the spherical hinge A-14b-7, the outer spherical surface of the spherical hinge A-14b-7 of the self-lubricating ring groove is also provided with a plurality of weft ring grooves A-14b-7-a2 which form an included angle gamma with the plane of the spherical hinge A-14b-7-a1 of the equatorial plane, the included angle gamma is 10-50 degrees, and the optimal value of the included angle gamma is 30 degrees; the equatorial plane ring grooves A-14b-7-a1 and the plurality of weft ring grooves A-14b-7-a2 are intersected with the spherical pole T.

When the bogie based on the novel motor suspension structure and the flexible interconnection framework is specifically applied, the included angle alpha value of the integrated beam A-2 and the integrated side beam A-1 is set to be 90 degrees; the included angle beta between the centers of two motor flexible suspension rubber node seat holes D-2 positioned below and the connecting line of the hole centers of motor coupler installation holes D-1-2 is set to 120 degrees, two weft ring grooves A-14b-7-a2 on the outer spherical surface of a self-lubricating ring groove spherical hinge A-14b-7 are set, the two weft ring grooves A-14b-7-a2 are mirror symmetry with respect to an equatorial ring groove A-14b-7-a1, and the two weft ring grooves A-14b-7-a1 and the plane of the equatorial ring groove A-7-a 1 are both set to be 30 degrees. The number of radial through holes A-14b-6-2 of the retainer on the bottom surface of the annular groove of the retainer circumferential annular groove A-14b-6-1 is four, and the four radial through holes A-14b-6-2 are distributed on the circumference of the retainer circumferential annular groove A-14b-6-1 at intervals according to a circumferential angle of 90 degrees.

Claims (9)

1. The bogie based on the novel motor suspension structure and the flexible interconnection framework comprises a wheel set device formed by wheels (c) and axles (D), and is characterized by further comprising a transverse and longitudinal integrated flexible interconnection framework (A), an easy-to-retract shaft type gear box (D) and a side beam single-point suspension type motor (E);

the transverse and longitudinal integrated flexible interconnection framework (A) comprises two transverse and longitudinal integrated frameworks which are rotationally symmetrical, and each transverse and longitudinal integrated framework comprises an integrated side beam (A-1) and an integrated cross beam (A-2) which are integrally formed; the integrated side beam (A-1) comprises a side beam middle section (A-1-1) serving as two bird wing connecting parts and positioned at a lower position, and two bird wing-shaped side beam cantilever sections (A-1-2) symmetrically fixedly connected to two ends of the side beam middle section (A-1-1), wherein the bird wing-shaped side beam cantilever sections (A-1-2) are formed by connecting an upward tilting section and a horizontal extension section extending horizontally outwards; the integrated cross beam (A-2) and the middle section of the integrated side beam (A-1) are integrally formed in a casting mode in an included angle posture of an alpha angle; the value range of the included angle alpha is 60 to 90 degrees;

each transverse and longitudinal integrated framework further comprises a side beam self-carrying gear box hanging seat (A-6), a gear box vertical stop (A-7), a motor single-point hanging seat (A-9), a motor vertical limit stop (A-10), a flexible interconnection connecting mechanism (A-14) and an interconnection butt joint seat (A-15), wherein the interconnection butt joint seat (A-15) and the integrated cross beam (A-2) are symmetrically distributed on the left side and the right side of a vertical plane in the side beam middle section (A-1-1), and the flexible interconnection connecting mechanism (A-14) is inserted into the interconnection butt joint seat (A-15) and fixedly connected with the interconnection butt joint seat;

The gear box hanging seat (A-6) and the gear box vertical stop (A-7) are sequentially and fixedly connected to the inner side wall of the wing-shaped side beam cantilever section (A-1-2) from top to bottom; the motor single-point suspension seat (A-9) and the motor vertical limit stop (A-10) are both positioned on the wing-shaped side beam cantilever section (A-1-2) adjacent to one side where the interconnection butt joint seat (A-15) is positioned, wherein the motor single-point suspension seat (A-9) is 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 motor vertical limit stop (A-10) is 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 (A-1-2);

the easy-to-withdraw shaft type gear box (D) is pressed on a gear box installation 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 the side beam single-point suspension 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 motor (E) is elastically connected with the easy-to-withdraw shaft type gear box (D) in a rubber node suspension mode;

the two transverse and longitudinal integrated frameworks are symmetrically arranged in a circumferential rotation symmetrical layout mode, and are flexibly connected with a flexible interconnection connecting mechanism (A-14) on the other integrated side beam (A-1) through the end heads of the integrated cross beams (A-2), so that the transverse and longitudinal integrated flexible interconnection frameworks (A) are formed together;

the middle part of a gear box shell (D-1) of the easy-to-withdraw shaft type gear box (D) is provided with an axle mounting hole (D-1-1) and a motor coupling mounting hole (D-1-2), four motor flexible suspension rubber node seat holes (D-2) distributed according to isosceles trapezoids are fixedly connected to the same side of the gear box shell (D-1) at the periphery of the motor coupling mounting hole (D-1-2), and the included angle beta between the centers of the two motor flexible suspension rubber node seat holes (D-2) positioned below and the connecting line of the hole centers of the motor coupling mounting hole (D-1-2) is 100-140 degrees; a vertical stop block (D-4) of the gear box shell 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 gear box shell (D-1) below the gear box shell vertical stop block (D-4) is fixedly connected with a shell vertical hanging rod seat (D-3), and rubber vibration reduction gaskets are arranged at two ends of the gear box hanging rod (H) and are used for elastically connecting the shell vertical hanging rod seat (D-3) with the gear box hanging seat (A-6);

The outer diameter of the gear box installation shaft section (d-1) of the axle (d) is reduced to 80% of the original value, so as to form a small-diameter gear box installation 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; the inner ring (s-3-1) of the large gear bearing (s-3) is coaxially and fixedly connected to the outer diameter of the radial thickening sleeve (D-7) of the inner ring of the easy-to-retract shaft type large gear bearing 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 radially opened along the radial outer circumferential end face, 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 along the circumferential array respectively, and the front end face and the rear end face of a large gear bearing (s-3) are sealed in an 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.

2. Bogie based on a new motor suspension and flexible interconnection architecture according to claim 1, characterized in that the optimum value of the included angle β is 120 degrees.

3. The bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 1, wherein the lower part of the rear end cover of the shell of the side beam single-point suspension motor (E) is fixedly connected to a single-point suspension seat (A-9) of the motor 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 shell of the side beam single-point suspension motor (E) is fixedly connected with a horizontal motor vertical cantilever stop lever (E-4), and the motor vertical cantilever stop lever (E-4) is suspended above a motor vertical limiting stop (A-10), and the clearance value range of the motor vertical cantilever stop lever and the motor vertical limiting stop lever is 10-50 mm; the motor shell positioned at the end of the motor output shaft on the side beam single-point suspension 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 motor (E) is rotationally connected to a reduction gear mechanism inside a motor coupler mounting hole (D-1-2) through a coupler (E-3).

4. Bogie based on a new motor suspension and flexible interconnection frame according to claim 1, characterized in that the flexible interconnection connection (a-14) is a steel spring combined rubber node (a-14 a) or a spherical knuckle bearing (a-14 b).

5. The bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 4, wherein the steel spring combined rubber node (a-14 a) comprises two steel spring node flanges (a-14 a-1), a rubber elastic mandrel (a-14 a-2) and a double-layer steel spring coil group (a-14 a-3), the double-layer steel spring coil group (a-14 a-3) is coaxially sleeved on the outer diameter of the rubber elastic mandrel (a-14 a-2), and both ends of the double-layer steel spring coil group (a-14 a-3) and the rubber elastic mandrel (a-14 a-2) are respectively and coaxially fixedly connected with one corresponding steel spring node flange (a-14 a-1); the double-layer steel spring ring set (A-14 a-3) comprises a large-diameter outer ring steel spring and a small-diameter inner ring steel spring which are coaxially nested.

6. The bogie based on the novel motor suspension structure and the flexible interconnection framework according to claim 4, wherein the knuckle ball bearing (A-14 b) comprises a knuckle ball bearing side beam end connecting flange (A-14 b-1), a knuckle ball bearing beam end connecting flange (A-14 b-2), a ball bearing outer ring (A-14 b-3), a ball bearing inner ring (A-14 b-4), a ball bearing dust-proof end cover (A-14 b-5), a buckling ball retainer group (A-14 b-6) and a self-lubrication ring groove ball hinge (A-14 b-7), and a ball socket is arranged in the buckling ball retainer group (A-14 b-6), and the self-lubrication ring groove ball hinge (A-14 b-7) is embedded in the ball socket of the buckling ball retainer group (A-14 b-6) and forms a rotating friction pair with the ball socket; the ball bearing inner ring (A-14 b-4) is coaxially nested on the inner diameter side wall of the central shaft hole of the self-lubricating ring groove ball hinge (A-14 b-7) and forms interference fit, and the ball bearing outer ring (A-14 b-3) is coaxially nested on the outer diameter side wall of the buckling type ball socket retainer group (A-14 b-6) and forms interference fit;

The connecting flange (A-14 b-2) at the beam end of the spherical ball bearing is coaxially plugged on the rear end face of the central shaft hole of the spherical hinge (A-14 b-7) of the self-lubricating ring groove, and the connecting flange (A-14 b-2) at the beam end of the spherical ball bearing is fixedly connected with the adjacent integrated beam (A-2) through bolts; the connecting flange (A-14 b-1) at the side beam end of the spherical joint bearing is coaxially plugged at the front ends of the buckled ball socket retainer group (A-14 b-6) and the spherical hinge (A-14 b-7) of the self-lubricating ring groove, and is fixedly connected with the adjacent interconnecting butt joint seat (A-15) through bolts; the ball bearing dustproof end cover (A-14 b-5) is fixedly connected to the outer end face of the joint ball bearing side beam end connecting flange (A-14 b-1) through bolts.

7. The bogie based on the novel motor suspension structure and the flexible interconnection frame according to claim 6, characterized in that the snap-fit ball-socket retainer group (a-14 b-6) comprises a first half ball-socket retainer (a-14 b-6 a) and a second half ball-socket retainer (a-14 b-6 b) which are identical and fastened to each other in a snap-fit manner, and retainer circumferential ring grooves (a-14 b-6-1) are provided on the outer diameters of the circumferential boundary lines of the snap-fit connection of the two; a plurality of radial through holes (A-14 b-6-2) of the retainer, which are directed towards the center of mass of the ball socket, are uniformly distributed on the bottom surface of the annular groove of the circumferential annular groove (A-14 b-6-1) of the retainer according to the same circumferential angle.

8. The bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 6, wherein the outer spherical surface of the self-lubricating ring groove spherical hinge (A-14 b-7) is provided with an equatorial ring groove (A-14 b-7-a 1) which coincides with the axial middle vertical surface of the self-lubricating ring groove spherical hinge, the outer spherical surface of the self-lubricating ring groove spherical hinge (A-14 b-7) is also provided with a plurality of weft ring grooves (A-14 b-7-a 2) which form an included angle gamma with the plane where the equatorial ring groove (A-14 b-7-a 1) is positioned, and the included angle gamma has a value range of 10 to 50 degrees; the equatorial plane ring grooves (A-14 b-7-a 1) and the plurality of weft ring grooves (A-14 b-7-a 2) are intersected at a spherical pole (T).

9. Bogie based on a new motor suspension and flexible interconnection architecture according to claim 8, characterized in that the optimum value of the included angle γ is 30 degrees.