CN113022627B - Axle box built-in bogie based on novel motor suspension structure and flexible interconnection framework - Google Patents
Axle box built-in bogie based on novel motor suspension structure and flexible interconnection framework Download PDFInfo
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- CN113022627B CN113022627B CN202011057087.8A CN202011057087A CN113022627B CN 113022627 B CN113022627 B CN 113022627B CN 202011057087 A CN202011057087 A CN 202011057087A CN 113022627 B CN113022627 B CN 113022627B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
- B61F5/52—Bogie frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
- B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F15/00—Axle-boxes
- B61F15/20—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The built-in bogie of axle box based on new-type motor suspension structure and flexible interconnection framework belongs to rail vehicle power bogie device field, and it includes wheel pair device, horizontal and vertical integrated flexible interconnection framework, four annular damping axle boxes, easy axle-withdrawing type gear box and curb girder single-point suspension motor that constitutes by wheel and axletree. 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
Technical Field
The invention belongs to the field of power bogie devices of railway vehicles, and particularly relates to an axle box built-in 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, the structural forms and the layout space of primary suspension and secondary suspension devices 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 a 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 to 3, the frame of the bogie of the railway carriage can be divided into a welded frame formed by welding a plurality of plate members and a cast frame formed by integral casting, but the integral structure of the welded frame and the cast frame is a frame 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 frame 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 and 2, for a welded side beam formed by welding and splicing a plurality of plates to form a box structure, a welding member side beam i is generally a wing-shaped structure with two wings upturned, and a welding member wheel axle seat i-2 is correspondingly welded and fixedly connected to the lower end face of a wing root part 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, chinese 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 designed for improving the accuracy of assembly positioning of side beam spring cap cylinder i-3 and other parts, reducing calibration and 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, such as the one 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. 3, 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. In addition, the existing casting side beam is provided with an isosceles trapezoid large interface j-1 positioned at the tip end part of a wing of the casting side beam j, is specially designed in a matched mode aiming at the axle box form of an isosceles trapezoid axle box f stacked by a plurality of layers of rubber tiles e, and is not suitable for an externally arranged axle box of a wheel set and a typical primary suspension structure corresponding to the externally arranged axle box.
Railway vehicle bogies with traction motors are commonly referred to as power bogies, which typically employ a two-stage suspension system.
A typical primary suspension system for reducing jounce vibration generated by wheel rails and axles is composed of a pallet axle box a and a primary steel spring b mounted on the pallet axle box a, the upper end of the primary steel spring b being used for supporting a circular cap tube at the end of a bogie side beam, as shown in fig. 1 and 2. Since this typical primary suspension is mounted to the axle d end outboard of the wheel c, it is referred to as a wheel set outboard axle box. But the external axle box of the wheel set greatly increases the axial total width of the wheel set, is more easily impacted by flying sand and broken stones along the railway, and also increases the whole turning radius of the bogie, thereby being not beneficial to the improvement of the passing curvature of the minimum curve of the train. Another most recent primary suspension is shown in fig. 3, which overcomes the old technical problems of the wheel-to-wheel type axle boxes by stacking a plurality of rubber tiles e on both sides of an isosceles trapezoid axle box f to form a primary suspension structure built in the axle box which can be disposed inside the wheel c. However, the built-in primary suspension structure of the isosceles trapezoid-shaped axle box with the double-sided rubber stacks has the defects of complex manufacturing process, complicated disassembly and overhaul procedures and high manufacturing and maintenance cost.
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 integral beam body g or the cross beam body h is adopted, the layout position and the welding manufacturing process of the motor hanging seat t and the gear box hanging seat u not only put 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 existing bogie lacks enough axle box layout space, a typical primary suspension device can be only arranged at two ends of an axle, the damage risk is increased, the structural size and the turning radius of the whole bogie are increased, the improvement of the minimum curve passing capability is not facilitated, and the lifting lug of the shell of the traction motor r is of a rigid structure which is not removable, so that the lifting lug and the framework and the gear box structure interfere with each other to block each other, the traction motor r cannot be detached from the lower part of the vehicle body alone through a maintenance trench, the carriage above the framework is separated from the framework by a trolley, the traction motor r can be detached from the upper part 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 greatly influence the layout space and structural forms of the primary suspension device, the motor and the gearbox, so that the layout scheme of the traditional primary suspension device cannot meet the requirements of the installation position and the vibration reduction index, and the traditional reference scheme is required to be overturned, so that the design improvement of a brand new concept is made.
As shown in fig. 4 to 6, the existing large gear s-2 mounted inside the snap-fit spliced 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 a coaxially fixedly connected interference fit, the gearbox mounting shaft section d-1 on the axle d is directly press-fitted with the large gear bearing inner ring s-3-1 on the large gear bearing s-3 to form a coaxially fixedly connected interference fit, the coaxially fixedly connected form of the interference fit causes the gearbox mounting shaft section d-1, the gearbox bearing s-3 and the large gear s-2 to be an integral body which cannot be separated, and because the structural strength of the snap-fit spliced gearbox housing s-1 is low, the gearbox mounting shaft section d-1 cannot be directly used as a force point of a demounting baffle on the wheel axle demounting force machine, the existing bearing inner ring of the large gear bearing s-3 is too narrow, so that even if the dismounting baffle plate on the wheel axle dismounting press is remodeled into a multi-claw 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 dismounting blocking acting force cannot be reliably implemented on the inner ring s-3-1 of the large gear bearing due to lack of enough radial acting force, so that the axle dismounting cannot be directly implemented, and further, when the axle d or the large gear s-2 is overhauled later, the gear box shell s-1 which is buckled and spliced is firstly released from the original splicing and buckled state, and the axle d, the large gear s-2 which is coaxially and fixedly connected with the axle d and the large gear bearing s-3 are integrally dismounted from the framework together, 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. Axle box mounting journal segments d-2 at both ends of axle d are used for coaxial fixation with bearing B-2 of the wheel.
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) The existing casting side beams for high-speed running trains are required to be matched with a more complex secondary damping system comprising an anti-rolling torsion bar and an anti-serpentine damper; in addition, the existing casting side beam is characterized in that an isosceles trapezoid large interface positioned at the tip end part of the casting side beam is specially designed in a matched mode aiming at the axle box form of an isosceles trapezoid axle box formed by stacking multiple layers of rubber tiles, and is not suitable for an externally arranged axle box of a wheel set and a typical primary suspension structure corresponding to the externally arranged axle box.
4) In addition, the isosceles trapezoid-shaped axle box built-in primary suspension structure with double-sided rubber stacks has the defects of complex manufacturing process, complicated disassembly and overhaul procedures and high manufacturing and maintenance cost.
5) 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.
6) 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.
7) 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 comprises a wheel pair device formed by wheels and axles, and is characterized by further comprising a transverse and longitudinal integrated flexible interconnection framework, four annular damping axle boxes, an easy-to-retract 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 framework overhead spring mounting seat, a framework traction pull rod seat, a framework transverse stop seat, a side beam self-carrying gearbox hanging seat, a gearbox vertical stop, two half-ring clamp type axle box hanging seats, a motor single-point hanging seat, a motor vertical limit stop, a framework vertical shock absorber seat, an antenna Liang Diao, a framework transverse shock absorber seat, 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 plane 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 frame transverse stop seat is fixedly connected to the upper end of the cantilever section of the bird wing-shaped side beam adjacent to one side where the integrated beam is located; the gear box hanging seat and the gear box vertical stop are fixedly connected on the inner side wall of the cantilever section of the bird wing-shaped side beam below the root part of the framework transverse stop seat in sequence from top to bottom; 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, wherein the framework vertical shock absorber seat is fixedly connected to the inner side wall of the lower part of the wing-shaped side beam cantilever section inclined section, 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 antenna Liang Diao is arranged on the outer side wall of the most distal end of each wing-shaped side beam cantilever section, the half-ring clamp type axle box hanging seat is arranged at the bottom of each wing-shaped side beam cantilever Duan Yuan end, and a sensor mounting hole is formed in the upper end face of each half-ring clamp type axle box hanging seat; the transverse shock absorber seat is fixedly connected to the middle section of the upper end face of a corresponding integrated beam;
The two annular vibration reduction axle boxes are arranged on the inner sides of the wheels and are coaxially and rotatably connected to the two ends of the axle, each annular vibration reduction axle box comprises an axle bearing, an axle box positioning and temperature measuring heat conducting sheath and a vibration reduction 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 and fixedly connected to the two ends of the axle in a pressing mode, sockets for positioning temperature sensors are formed in the upper parts of the axle box positioning and temperature measuring heat conducting sheath and the vibration reduction rubber rings, and the positions of the sockets correspond to sensor mounting holes in 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 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 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 annular structures formed by buckling two semi-rings, two heat conducting sheath bulges 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 wall of the vibration damping rubber ring, and each heat conducting sheath bulge is embedded into a corresponding axle box vibration damping ring clamping groove and limits the axle box positioning and temperature measuring heat conducting sheath to the inside of the vibration damping rubber ring along the axial direction; the annular damping axle box () is arranged below the end part of the cantilever section of the wing-shaped side beam through the cooperation of the semi-annular shell and the semi-annular clamp type axle box hanging seat.
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 axle box built-in 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 semi-ring clamp type axle box hanging seat is arranged at the bottom of each wing-shaped side beam cantilever Duan Yuan end, 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 vibration damping axle boxes are arranged on the inner sides of the wheels and are coaxially and fixedly connected to the two ends of the axle, vibration damping rubber rings arranged in the annular vibration damping axle boxes are coaxially and fixedly connected to the outer rings of axle bearings, the inner rings of the axle bearings are coaxially and fixedly connected to the two ends of the axle in a press fit mode, rubber ring blind hole insertion holes for positioning temperature sensors are formed in the upper portions of the vibration damping rubber rings of the annular vibration damping axle boxes, shell insertion holes for positioning temperature sensor butt joint seats are formed in the upper portions of the axle box positioning and temperature measuring heat conducting sheaths, and the positions of the two insertion holes correspond to sensor mounting holes of the integrated side beams. According to the design scheme, the temperature measuring end of the temperature sensor can be inserted into and positioned in the rubber ring blind hole socket sequentially through the sensor mounting hole and the shell socket, so that the partition effect of a vibration reduction rubber ring on the shaft box temperature is eliminated, the semi-ring clamp type axle box hanging seat is a brand new clamp axle-holding wheel set built-in axle box capable of accurately measuring the temperature of the outer side wall of the axle box in the radial direction, the original structural design thoroughly breaks through the design and manufacturing process that the traditional axle box with a plurality of layers of rubber tiles stacked in an isosceles trapezoid can only be made into an open structural form, otherwise, the temperature cannot be measured accurately in the radial direction, and a typical primary suspension device with a tray type axle box and a primary steel spring is required to rely on the structural tabulation of a welding side beam spring cap barrel, so that the design and manufacturing process of a special positioning tool for the welding side beam spring cap barrel is complicated is eliminated. According to the design scheme, besides the isosceles trapezoid axle box structure formed by stacking multiple layers of rubber tiles, the appearance and the size of the isosceles trapezoid large interface of the tip end part of the side beam wing of the traditional casting are obviously improved and reduced, so that the mechanical structural strength of the side beam wing is greatly improved, and the installation and the temperature measurement of the semi-ring clamp type axle box hanging seat are possible. In addition, the axle box with the built-in axle-holding type wheel set is further characterized in that the damage risk when the axle box is externally arranged is reduced through the structural form that the semi-ring axle box hanging seat is internally arranged at the inner sides of two wheels, and the transverse width dimension and the turning radius of the whole bogie are effectively reduced on the premise of ensuring the installation position and the vibration reduction index of the primary suspension axle box device, so that the curve passing capacity of the bogie is further improved. The compact primary suspension structure based on the annular vibration reduction axle box benefits from the layout space saved by the novel motor and gear box layout mode, the semi-annular shell of the compact primary suspension structure adopts a split type clamp form connected by bolts to be buckled with the semi-annular clamp type axle box hanging seat to form a complete annular structure, so that the installation, the disassembly and the maintenance are convenient, and meanwhile, the adverse effect of welding deformation is avoided.
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 bogie with the built-in axle box can enable the integrated vibration reduction type swing bolster and two sleeper beams on a secondary suspension system to be arranged under a secondary air spring, a sleeper beam arranged under a transverse vibration absorber and two vertical vibration absorbers to be directly connected to the lower part of the swing bolster on the transverse and longitudinal integrated flexible interconnection framework. Instead of the secondary suspension device of the traditional bogie, the secondary suspension device is directly connected to the lower part of the vehicle body from the framework, so that the respective length requirements of the secondary vibration reduction buffer components are greatly reduced, the manufacturing cost is reduced, the structural strength is improved, the connecting procedures of the traditional secondary transverse vibration dampers, two air springs, two secondary vertical vibration dampers, an anti-rolling torsion bar and other components with the vehicle body are greatly reduced, the rapid vehicle falling pair of a carriage and the framework is realized, the occupation time of a crown block and a vehicle frame machine is shortened, the turnover efficiency of a production line is improved, and the integrated secondary sleeper beam system is convenient for independent replacement and overhaul.
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 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 process manufacturing index of the axle box built-in bogie based on the novel motor suspension structure and the flexible interconnection framework, 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 axle box built-in 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 four annular vibration reduction axle boxes, the easy-to-withdraw axle type gear boxes and the side beam single-point suspension type motor are all modularized, different module units can independently implement standardized production, and the axle box built-in bogie is 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 built-in axle housing;
FIG. 4 is a schematic illustration of the assembly relationship of a prior art gearbox and axle;
FIG. 5 is a schematic illustration of the assembly relationship of the large gear and axle of FIG. 4;
FIG. 6 is an enlarged partial schematic view of FIG. 5;
FIG. 7 is a schematic perspective view of the present invention axlebox built-in truck based on a new motor suspension structure and flexible interconnect frame;
FIG. 8 is a schematic diagram of the explosive structure of the axlebox built-in bogie of the present invention based on a new motor suspension structure and flexible interconnect frame;
FIG. 9 is a schematic view of the structure of the integrated transverse and longitudinal flexible interconnect frame of the present invention;
FIG. 10 is a schematic view of the structure of the easy-to-retract shaft type gearbox of the present invention;
FIG. 11 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. 12 is a schematic view of the structure of the easy-to-retract shaft type gearbox and the gearbox boom of the present invention;
FIG. 13 is a schematic view of the wheel set assembly, annular damper axle housing and temperature sensor of the present invention;
FIG. 14 is a schematic view of the annular damper axle housing and temperature sensor of the present invention with the axle bearing and semi-annular housing removed;
FIG. 15 is a schematic view of the exploded construction of the annular damper axle housing of the present invention with the axle bearing and semi-annular housing removed;
FIG. 16 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. 17 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. 18 is a schematic view of the present invention utilizing a penetration multi-jaw chuck to withdraw an axle from a bull gear;
FIG. 19 is a schematic view of the structure of the flexible interconnect linkage and integrated beam of the present invention;
FIG. 20 is a schematic view of a flexible interconnect linkage of the present invention in the form of a steel spring composite rubber node;
FIG. 21 is a schematic axial cross-sectional view of the flexible interconnect coupling mechanism of the present invention as a spherical plain bearing;
FIG. 22 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. 23 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. 24 is a schematic axial cross-sectional view of a snap-fit ball and socket cage assembly of the present invention;
FIG. 25 is a schematic diagram showing the front view of a spherical hinge of a self-lubricating ring groove in the present invention;
fig. 26 is a schematic illustration of the application of the present invention to an axlebox built-in truck based on a new motor suspension structure and flexible interconnect frame.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 7 to 26, the axle box built-in bogie based on the novel motor suspension structure and the flexible interconnection framework comprises a wheel set device formed by wheels and axles, a transverse and longitudinal integrated flexible interconnection framework, four annular vibration reduction axle boxes, an easy-to-retract axle type gear box 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 1-1 and an integrated cross beam 1-2 which are integrally formed; the integrated side beam 1-1 comprises a side beam middle section 1-1-1 serving as a connecting part of two wings and positioned at a lower position, and two wing-shaped side beam cantilever sections 1-1-2 symmetrically fixedly connected to two ends of the side beam middle section 1-1, wherein the wing-shaped side beam cantilever sections 1-1-2 are formed by connecting an upward tilting section and a horizontal extension section extending horizontally outwards; the integrated beam 1-2 is integrally formed with the middle section of the integrated side beam 1-1 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 framework overhead spring mounting seat 1-3, a framework traction pull rod seat 1-4, a framework transverse stop seat 1-5, a side beam self-carrying gear box hanging seat 1-6, a gear box vertical stop 1-7, two half-ring clamp type axle box hanging seats 1-8, a motor single-point hanging seat 1-9, a motor vertical limit stop 1-10, a framework vertical shock absorber seat 1-11, an antenna Liang Diao-12, a framework transverse shock absorber seat 1-13, a flexible interconnection connecting mechanism 1-14 and an interconnection butt seat 1-15, wherein the interconnection butt seat 1-15 and the integrated cross beam 1-2 are symmetrically distributed on the left side and the right side of a vertical plane in the side beam middle section 1-1-1, and the flexible interconnection connecting mechanism 1-14 is inserted into the interconnection butt seat 1-15 and fixedly connected with the interconnection butt seat 1-15;
the frame suspension spring mounting seat 1-3 is fixedly connected to the upper end of the middle part of the side beam middle section 1-1-1, the frame traction pull rod seat 1-4 is fixedly connected to the outer side wall of the middle part of the side beam middle section 1-1, and the frame transverse stop seat 1-5 is fixedly connected to the upper end of the wing-shaped side beam cantilever section 1-1-2 adjacent to one side where the integrated beam 1-2 is located; the gear box hanging seat 1-6 and the gear box vertical stop 1-7 are fixedly connected on the inner side wall of the wing-shaped side beam cantilever section 1-1-2 below the transverse stop seat 1-5 of the framework in sequence from top to bottom; the single-point motor suspension seat 1-9, the vertical motor limiting stop 1-10 and the vertical frame vibration damper seat 1-11 are all positioned on the wing-shaped side beam cantilever section 1-1-2 adjacent to one side where the interconnection butt joint seat 1-15 is positioned, wherein the vertical frame vibration damper seat 1-11 is fixedly connected to the inner side wall of the lower part of the inclined section of the wing-shaped side beam cantilever section 1-1-2, the single-point motor suspension seat 1-9 is fixedly connected to the bottom of the lower end face of the inclined section of the wing-shaped side beam cantilever section 1-1-2, and the vertical motor limiting stop 1-10 is fixedly connected to the upper end of the junction of the inclined section of the wing-shaped side beam cantilever section 1-1-2 and the horizontal extension section; the antenna Liang Diao 1-12 is arranged on the outer side wall of the most distal end of each wing-shaped side beam cantilever section 1-1-2, the half-ring clamp type axle box hanging seat 1-8 is arranged at the bottom of the distal end of each wing-shaped side beam cantilever section 1-1-2, and the upper end face of each half-ring clamp type axle box hanging seat 1-8 is provided with a sensor mounting hole 1-8-1; the transverse shock absorber seat 1-13 is fixedly connected to the middle section of the upper end face of a corresponding integrated beam 1-2;
The two annular vibration reduction axle boxes are arranged on the inner sides of the wheels c and are coaxially and rotatably connected to the two ends of the axle, each annular vibration reduction axle box comprises an axle bearing 1-2, an axle box positioning and temperature measuring heat conducting sheath 1-3 and a vibration reduction rubber ring 1-1, the axle box positioning and temperature measuring heat conducting sheath 1-3 is coaxially and fixedly connected with the outer ring of the axle bearing 1-2, the inner ring of the axle bearing 1-2 is coaxially and fixedly arranged at the two ends of the axle, the upper parts of the axle box positioning and temperature measuring heat conducting sheath 1-3 and the vibration reduction rubber ring 1-1 are respectively provided with a socket for positioning a temperature sensor, and the positions of the sockets correspond to the sensor mounting holes 1-8-1 of the upper end surfaces of the cantilever sections 1-1-2 of the wing-shaped side beams;
the easy-to-withdraw shaft type gear box is pressed on a gear box installation shaft section 1-1 of the axle, and one side of the easy-to-withdraw shaft type gear box is connected to a gear box hanging seat 1-6 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 seats 1-9, and the other side of the side beam single-point suspension motor is elastically connected with the easy-to-withdraw shaft type gear box 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 mechanisms 1-14 on the other integrated side beam 1-1 through the end heads of the integrated cross beams 1-2, so that the transverse and longitudinal integrated flexible interconnection frameworks are formed together.
The central connecting line of the shell jack 1-3-1 of the axle box positioning and temperature measuring heat conducting sheath 1-3 and the rubber ring blind hole jack 1-1-1 of the vibration damping rubber ring 1-1 forms an angle of 60 degrees with the horizontal plane.
The axle box positioning and temperature measuring heat conducting sheath 1-3 and the vibration damping rubber ring 1-1 are respectively of annular structures formed by buckling two semi-rings, two heat conducting sheath bulges 1-3-2 formed 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 1-3, two axle box vibration damping ring clamping grooves 1-1-2 formed along the inner wall of the circumference are formed in the inner side wall of the vibration damping rubber ring 1-1, and each heat conducting sheath bulge 1-3-2 is embedded into one corresponding axle box vibration damping ring clamping groove 1-1-2 and limits the axle box positioning and temperature measuring heat conducting sheath 1-3 to the inside of the vibration damping rubber ring 1-1 along the axial direction; the annular damping axle box is arranged below the end part of the wing-shaped side beam cantilever section 1-1-2 through the cooperation of the semi-annular shell 1-4 and the semi-annular clamp type axle box hanging seat 1-8.
The middle part of a gear box shell 1-1 of the easy-to-withdraw shaft type gear box is provided with an axle mounting hole 1-1-1 and a motor coupling mounting hole 1-1-2, four motor flexible suspension rubber node seat holes 1-2 distributed according to isosceles trapezoids are fixedly connected to the same side of the gear box shell 1-1 on the periphery of the motor coupling mounting hole 1-1-2, and the included angle beta between the centers of the two motor flexible suspension rubber node seat holes 1-2 positioned below and the connecting line of the hole centers of the motor coupling mounting hole 1-1-2 is 100-140 degrees, wherein the optimal value is 120 degrees; the outer side wall of the gear box shell 1-1 at the intersection of the extension line of the central connecting line of the axle mounting hole 1-1-1 and the motor coupling mounting hole 1-1-2 and the gear box shell 1-1 is fixedly connected with a vertical stop block 1-4 of the gear box shell; the outer side wall of the gear box shell 1-1 below the gear box shell vertical stop block 1-4 is fixedly connected with a shell vertical suspender seat 1-3, and two ends of the gear box suspender are respectively provided with a rubber vibration damping gasket which is used for elastically connecting the shell vertical suspender seat 1-3 with the gear box suspender seat 1-6.
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 1-9 through a side beam end motor suspension rubber node 1-1 and a motor suspension rubber node semi-ring clamp 1-2, 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 1-4, the motor vertical cantilever stop lever 1-4 is suspended above a motor vertical limit stop 1-10, and the gap value range of the motor vertical cantilever stop lever 1-4 and the motor vertical limit stop 1-10 is 10-50 mm; the motor shell positioned at the end of the motor output shaft on the side beam single-point suspension motor is fixedly connected to the four motor flexible suspension rubber node seat holes 1-2 in an elastic suspension mode through four motor flexible suspension rubber nodes 1-5, and the motor output shaft of the side beam single-point suspension motor is rotationally connected to a reduction gear mechanism in the motor coupler mounting hole 1-1-2 through a coupler 1-3.
The outer diameter of the gear box installation shaft section 1-1 of the axle is reduced to 80% of the original value, so that a small-diameter gear box installation shaft section 1-3 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 1-7 and two large gear bearing end covers 1-6 provided with screw hole arrays;
the inner diameter of the radial thickening sleeve 1-7 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 1-3 of the small diameter gear box, and the inner diameter and the outer diameter are coaxially and fixedly connected through press fitting; the inner ring 1-3-1 of the large gear bearing 1-3 is coaxially and fixedly connected to the outer diameter of the radial thickening sleeve 1-7 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 1-7 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 1-6 are respectively fixedly connected to the front end face and the rear end face of the radial thickening sleeve 1-7 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 1-3 are sealed in the axle mounting hole 1-1-1; the flange plates of the gear box brush mechanisms 1-8 are coaxially and fixedly connected to corresponding screw holes on the outer diameter side wall of the axle mounting hole 1-1 through a plurality of bolts.
The flexible interconnection connection mechanism 1-14 is a steel spring combined rubber node 1-14a or a joint ball bearing 1-14b.
The steel spring combined type rubber node 1-14a comprises two steel spring node flanges 1-14a-1, a rubber elastic mandrel 1-14a-2 and a double-layer steel spring ring set 1-14a-3, wherein the double-layer steel spring ring set 1-14a-3 is coaxially sleeved on the outer diameter of the rubber elastic mandrel 1-14a-2, and two ends of the double-layer steel spring ring set 1-14a-3 and the rubber elastic mandrel 1-14a-2 are respectively and coaxially fixedly connected with a corresponding steel spring node flange 1-14 a-1; the double-layer steel spring ring set 1-14a-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 1-14b comprises a spherical joint bearing side beam end connecting flange 1-14b-1, a spherical joint bearing cross beam end connecting flange 1-14b-2, a spherical bearing outer ring 1-14b-3, a spherical bearing inner ring 1-14b-4, a spherical bearing dustproof end cover 1-14b-5, a buckling type ball socket retainer group 1-14b-6 and a self-lubricating ring groove ball hinge 1-14b-7, wherein ball sockets are arranged in the buckling type ball socket retainer group 1-14b-6, and the self-lubricating ring groove ball hinge 1-14b-7 is embedded into the ball sockets of the buckling type ball socket retainer group 1-14b-6 and forms a rotating friction pair with the ball sockets; the ball bearing inner ring 1-14b-4 is coaxially nested on the inner diameter side wall of the central shaft hole of the self-lubricating ring groove ball hinge 1-14b-7 and forms interference fit, and the ball bearing outer ring 1-14b-3 is coaxially nested on the outer diameter side wall of the buckling type ball socket retainer group 1-14b-6 and forms interference fit;
The connecting flange 1-14b-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 1-14b-7 of the self-lubricating ring groove, and the connecting flange 1-14b-2 at the beam end of the spherical ball bearing is used for being fixedly connected with the adjacent integrated beam 1-2 through bolts; the joint ball bearing side beam end connecting flange 1-14b-1 is coaxially plugged at the front ends of the buckling ball socket retainer group 1-14b-6 and the self-lubricating ring groove ball hinge 1-14b-7, and the joint ball bearing side beam end connecting flange 1-14b-1 is used for being fixedly connected with the adjacent interconnection butt joint seat 1-15 through bolts; the ball bearing dustproof end cover 1-14b-5 is fixedly connected to the outer end face of the joint ball bearing side beam end connecting flange 1-14b-1 through bolts.
The buckled ball socket retainer group 1-14b-6 comprises a first half ball socket retainer 1-14b-6a and a second half ball socket retainer 1-14b-6b which are identical and buckled and fixedly connected with each other, and retainer circumferential ring grooves 1-14b-6-1 are arranged on the outer diameter of the buckled circumferential boundary line of the two; a plurality of radial through holes 1-14b-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 1-14b-6-1 of the retainer according to the same circumferential angle.
The outer spherical surface of the self-lubricating ring groove spherical hinge 1-14b-7 is provided with an equatorial plane ring groove 1-14b-7-a1 which coincides with the axial middle vertical surface of the self-lubricating ring groove spherical hinge 1-14b-7, the outer spherical surface of the self-lubricating ring groove spherical hinge 1-14b-7 is also provided with a plurality of weft ring grooves 1-14b-7-a2 which form an included angle gamma with the plane of the equatorial plane ring groove 1-14b-7-a1, 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 1-14b-7-a1 and the plurality of weft ring grooves 1-14b-7-a2 are intersected with the spherical pole.
When the bogie is arranged in the axle box based on the novel motor suspension structure and the flexible interconnection framework, the included angle alpha value between the integrated beam 1-2 and the integrated side beam 1-1 is set to be 90 degrees; the included angle beta between the centers of two motor flexible suspension rubber node seat holes 1-2 positioned below and the connecting line of the hole centers of motor coupler installation holes 1-1-2 is set to 120 degrees, two weft ring grooves 1-14b-7-a2 on the outer spherical surface of a self-lubricating ring groove spherical hinge 1-14b-7 are set, the two weft ring grooves are mirror symmetry with respect to an equatorial ring groove 1-14b-7-a1, and the two weft ring grooves are set to 30 degrees with the plane of the equatorial ring groove 1-14b-7-a1 at gamma. The number of radial through holes 1-14b-6-2 of the retainer on the bottom surface of the ring groove of the circumferential ring groove 1-14b-6-1 of the retainer is four, and the four radial through holes are distributed on the circumference of the circumferential ring groove 1-14b-6-1 of the retainer at intervals according to the circumferential angle of 90 degrees.
When the bogie is assembled with the swing bolster, the integrated vibration reduction swing bolster and a secondary transverse stop seat F-1-4, a secondary vertical shock absorber F-5, a secondary transverse shock absorber F-4, an air spring F-2, a traction pull rod seat F-1-1 and other secondary vibration reduction buffer components on a secondary suspension system are respectively and correspondingly connected with the transverse and longitudinal integrated interconnection framework according to a conventional method known in the industry, namely: two secondary air springs 1-2 are correspondingly arranged on two air spring mounting seats 1-3 of the framework one by one and are arranged at the bottoms of two ends of the swing bolster 1-1; then one end of the transverse shock absorber 1-4 is fixedly connected to the transverse shock absorber seat F-1-2 through a rubber node, and the other end is fixedly connected to a corresponding framework transverse shock absorber seat 1-13 through a rubber node; the upper ends of the two secondary vertical vibration dampers 1-5 are respectively and fixedly connected to the two vertical vibration damper seats 1-1-3 in one-to-one correspondence through rubber nodes, the lower ends of the two secondary vertical vibration dampers 1-5 are fixedly connected to the vertical vibration damper seats 1-11 of the framework through the rubber nodes, the traction pull rod seat 1-4 of the framework is enabled to transmit power from the framework to the traction pull rod seat F-1-1 through the traction pull rod 1-3, and therefore the two air springs 1-2, the secondary transverse vibration dampers 1-4 and the two secondary vertical vibration dampers 1-5 are all directly connected to the lower portion of the swing bolster 1-1 through the transverse and longitudinal integrated interconnection framework, and the assembly connection operation of the swing bolster and the framework is completed.
Claims (12)
1. The axle box built-in 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), four annular damping axle boxes (B), an easy-to-withdraw axle 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 framework overhead spring mounting seat (A-3), a framework traction pull rod seat (A-4), a framework transverse stop seat (A-5), a side beam self-carrying gearbox hanging seat (A-6), a gearbox vertical stop (A-7), two half-ring clamp type axle box hanging seats (A-8), a motor single-point hanging seat (A-9), a motor vertical limit stop (A-10), a framework vertical shock absorber seat (A-11), an antenna Liang Diao (A-12), a framework transverse shock absorber seat (A-13), a flexible interconnection connecting mechanism (A-14) and an interconnection butt joint seat (A-15), wherein the interconnection butt joint seat (A-15) and an 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 frame suspension spring mounting seat (A-3) is fixedly connected to the upper end of the middle part of the side beam middle section (A-1-1), the frame traction pull rod seat (A-4) is fixedly connected to the outer side wall of the middle part of the side beam middle section (A-1-1), and the frame transverse stop seat (A-5) is fixedly connected to the upper end of the wing-shaped side beam cantilever section (A-1-2) adjacent to one side of the integrated cross beam (A-2); the gear box hanging seat (A-6) and the gear box vertical stop (A-7) are fixedly connected on the inner side wall of the wing-shaped side beam cantilever section (A-1-2) below the root part of the framework transverse stop seat (A-5) in sequence from top to bottom; the motor single-point suspension seat (A-9), the motor vertical limit stop (A-10) and the framework vertical shock absorber seat (A-11) are all 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 framework vertical shock absorber seat (A-11) is fixedly connected to the inner side wall of the lower part of the wing-shaped side beam cantilever section (A-1-2), the motor single-point suspension seat (A-9) is fixedly connected to the bottom of the lower end face 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 wing-shaped side beam cantilever section (A-1-2) inclined section and the horizontal extension section; the antenna Liang Diao (A-12) is arranged on the outer side wall of the most distal end of each wing-shaped side beam cantilever section (A-1-2), the half-ring clamp type axle box hanging seat (A-8) is arranged at the bottom of the distal end of each 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 half-ring clamp type axle box hanging seat (A-8); the transverse shock absorber seat (A-13) is fixedly connected to the middle section of the upper end surface of a corresponding integrated beam (A-2);
The two annular vibration damping axle boxes (B) are arranged on the inner sides of the wheels (c) and coaxially connected to the two ends of the axle (d) in a rotating way, 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 fixedly connected with the outer ring of the axle bearing (B-2), the inner rings of the axle bearings (B-2) are coaxially and fixedly connected to the two ends of the axle (d) in a pressing way, 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), the positions of the sockets correspond to the sensor mounting holes (A-8-1) on the upper end faces of the wing-shaped cantilever beam sections (A-1-2), and the centers of the shell sockets (B-3-1) of the axle box positioning and temperature measuring heat conducting sheath (B-3) and the rubber ring sockets (B-1) are connected with a horizontal blind hole (B-1-1) in a connecting way by 60 degrees;
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 head of each integrated cross beam (A-2), so that the transverse and longitudinal integrated flexible interconnection frameworks (A) are formed together.
2. The axle box built-in bogie based on the novel motor hanging structure and the flexible interconnection framework as claimed in claim 1, wherein the axle box positioning and temperature measuring heat conducting sheath (B-3) and the vibration damping rubber ring (B-1) are respectively of annular structures formed by buckling two semi-rings, two heat conducting sheath protrusions (B-3-2) formed along the outer circumferential side wall are arranged on the outer wall of the axle box positioning and temperature measuring heat conducting sheath (B-3), two axle box vibration damping ring clamping grooves (B-1-2) formed along the inner circumferential wall are formed on the inner side wall of the vibration damping rubber ring (B-1), and each heat conducting sheath protrusion (B-3-2) is embedded into one corresponding axle box vibration damping ring clamping groove (B-1-2) and limits the axle box positioning and temperature measuring heat conducting sheath (B-3) to the inside of 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 wing-shaped side beam cantilever section (A-1-2) through the matching of the semi-annular shell (B-4) and the semi-annular clamp type axle box hanging seat (A-8).
3. The axle box built-in bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 1, wherein an axle mounting hole (D-1-1) and a motor coupling mounting hole (D-1-2) are arranged in the middle of a gear box shell (D-1) of the easy-to-withdraw shaft type gear box (D), four motor flexible suspension rubber node seat holes (D-2) distributed according to isosceles trapezoids are fixedly connected on the same side of the gear box shell (D-1) around the motor coupling mounting hole (D-1-2), and an 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 center 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).
4. An axlebox built-in bogie based on a new motor suspension and flexible interconnect frame as claimed in claim 3, wherein the optimum value of the angle β is 120 degrees.
5. The axle box built-in bogie based on the novel motor hanging structure and the flexible interconnection framework as claimed in claim 3, 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 motor single-point suspension seat (A-9) through a side beam end motor hanging rubber node (E-1) and a motor hanging 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 gap 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).
6. Axle box built-in bogie based on new motor suspension and flexible interconnection architecture according to claim 1, characterized in that the external diameter of the gearbox mounting axle section (d-1) of the axle (d) is reduced to 80% of the original value, forming a small diameter gearbox mounting axle 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.
7. Axle housing built-in bogie based on new motor suspension and flexible interconnect frame according to claim 1, characterized in that the flexible interconnect connection (a-14) is a steel spring combined rubber node (a-14 a) or a knuckle ball bearing (a-14 b).
8. The axle box built-in bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 7, wherein the steel spring combined type rubber node (A-14 a) comprises two steel spring node flanges (A-14 a-1), a rubber elastic core shaft (A-14 a-2) and a double-layer steel spring ring set (A-14 a-3), the double-layer steel spring ring set (A-14 a-3) is coaxially sleeved on the outer diameter of the rubber elastic core shaft (A-14 a-2), and two ends of the double-layer steel spring ring set (A-14 a-3) and the rubber elastic core shaft (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.
9. The axle box built-in bogie based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 7, 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 cross 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 snap-fit ball retainer group (a-14 b-6) and a self-lubricating ring groove ball hinge (a-14 b-7), the ball socket is arranged in the snap-fit ball retainer group (a-14 b-6), and the self-lubricating ring groove ball hinge (a-14 b-7) is embedded in the ball socket of the snap-fit 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.
10. The axle box built-in bogie based on a new motor suspension structure and flexible interconnection frame according to claim 9, characterized in that said snap-fit ball-and-socket cage group (a-14 b-6) comprises a first half ball-and-socket cage (a-14 b-6 a) and a second half ball-and-socket cage (a-14 b-6 b) which are identical and fastened to each other, and that the outer diameter of the circumferential boundary line of the snap-fit connection of the two is provided with a cage circumferential ring groove (a-14 b-6-1); 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.
11. The bogie in the axle box based on the novel motor suspension structure and the flexible interconnection framework as claimed in claim 9, 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) coinciding 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) with an included angle gamma with the plane of the equatorial ring groove (A-14 b-7-a 1), and the included angle gamma is 10-50 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).
12. The axlebox built-in bogie based on a new motor suspension structure and flexible interconnect frame according to claim 11, wherein the optimum value of the included angle γ is 30 degrees.
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| CN202011057087.8A CN113022627B (en) | 2020-09-30 | 2020-09-30 | Axle box built-in bogie based on novel motor suspension structure and flexible interconnection framework |
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| CN110979380A (en) * | 2019-12-20 | 2020-04-10 | 中车长春轨道客车股份有限公司 | Framework device based on novel primary suspension and longitudinal motor |
| CN212500392U (en) * | 2020-09-30 | 2021-02-09 | 中车长春轨道客车股份有限公司 | Axle box built-in bogie based on novel motor suspension structure and flexible interconnection framework |
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2020
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| GB1521096A (en) * | 1974-09-14 | 1978-08-09 | Demag Ag | Structure for use in fabricating railway bogies |
| CN101565051A (en) * | 2008-04-25 | 2009-10-28 | 南车青岛四方机车车辆股份有限公司 | Central cross beam connecting type hinging framework |
| DE102016123784A1 (en) * | 2016-12-08 | 2018-06-14 | CG Rail - Chinesisch-Deutsches Forschungs- und Entwicklungszentrum für Bahn- und Verkehrstechnik Dresden GmbH | Bogie of a rail vehicle with at least two axles mounted in axle bearings and at least one cross member |
| CN108045390A (en) * | 2017-12-08 | 2018-05-18 | 中车大连机车车辆有限公司 | The built-in bogie of broad gauge railcar axle box |
| CN110979380A (en) * | 2019-12-20 | 2020-04-10 | 中车长春轨道客车股份有限公司 | Framework device based on novel primary suspension and longitudinal motor |
| CN212500392U (en) * | 2020-09-30 | 2021-02-09 | 中车长春轨道客车股份有限公司 | Axle box built-in bogie based on novel motor suspension structure and flexible interconnection framework |
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