CN212473466U - Side beam end cantilever with temperature measurable axle box - Google Patents

Abstract

A side beam end cantilever with a temperature measurable axle box belongs to the field of side beam end devices of a railway vehicle bogie, and comprises a bird wing-shaped side beam cantilever section, a temperature sensor and an annular vibration reduction axle box; the annular vibration damping axle box comprises a vibration damping rubber ring, an axle bearing and an axle box positioning and temperature measuring heat conducting sheath. The utility model discloses vertical and vertical moment of torsion that can abundant release produced by automobile body side roll motion, it is horizontal by motor and gear box production to imitate the elimination, it is vertical, vertical and snake to turn round the pendulum, all vibrations such as side roll, and then reach more ideal anti side roll balanced effect, thereby fall to the vibration influence degree of bogie to the automobile body minimumly, the balance stability and the travelling comfort of reinforcing automobile body, and effectively reduce overall structure's fatigue loss, prolong the whole life of bogie and automobile body by a wide margin, and the production cost is reduced, create economic value.

Description

Side beam end cantilever with temperature measurable axle box

Technical Field

The utility model belongs to rail vehicle bogie curb girder tip device field, concretely relates to curb girder tip cantilever with axle box that can measure the temperature.

Background

As shown in fig. 1 to 3, the frame of the bogie of the railway passenger car can be divided into a welded frame formed by butt welding a plurality of plate groups and a cast frame formed by integral casting, but the integral structures of the welded frame and the cast frame both belong to a frame which is formed by a cross beam body and two side beams and has a top view in a letter H shape, the geometric center of the frame is an integral cross beam body H or a cross beam body g in a shape like a Chinese character jing, the two types of cross beam bodies are both used for forming a short cross beam in the middle of a letter H stroke structure, and the two side beams are arranged at two ends of the cross beam body in a bilateral symmetry manner; the cross beam body is composed of two small cross beams perpendicular to the side beams.

When the side beam structure of the bogie is designed, comprehensive factors such as structural strength and flexibility of a framework serving as a bearing main body, action effects of various auxiliary damping parts such as an anti-snake shock absorber and the like, a mounting mode of a braking mechanism and the like need to be comprehensively considered, and a primary suspension structural form needs to be comprehensively designed according to road conditions such as theoretical hourly speed, bearing load, minimum curve curvature, wind, snow, flying stones and the like of a train according to different vehicle type requirements. Various design schemes developed around the core concept are improved and complicated day by day, so that the iterative updating and continuous progress of the manufacturing level of the bogie are finally promoted, side beam structural schemes of different vehicle types are updated, and new schemes of new forms even completely replace the old concept, so that the core improvement of the bogie has obvious difference and innovation.

As shown in fig. 1 and 2, for a welded side sill formed by assembling and welding a plurality of plates to form a box-shaped structure, a welded side sill i is generally a bird wing-shaped structure with two upturned wings, and a welded axle seat i-2 is fixedly welded to a lower end surface of an inclined plane i-1 at a wing root part of each bird wing-shaped structure. And each welding piece side beam spring cap cylinder i-3 is fixedly connected to a side beam end cantilever of the wing tip horizontal section of one welding piece side beam i in a welding way. The side beam upper cover plate and the side beam lower cover plate of the welding part side beam i and the two welding part side beam side wall plates i-4 clamped between the side beam upper cover plate and the side beam lower cover plate are all special bird wing-shaped structures matched with the side wall plates i-4 of the welding part side beam, so that the clamping and positioning operation during the integral assembly welding of the welding part side beam i is relatively complex, a large number of positioning fixtures are needed to be used in the manufacturing process to ensure that the two welding part side beam side wall plates i-4 are respectively and vertically welded and fixedly connected with the welding part side beam lower cover plate according to the parallel postures, and the positioning of the plurality of side wall plate connecting rib plates and the welding part side beam spring cap barrel i-3 can be realized only by complex positioning tools which are additionally designed. For example, chinese patent publication No. CN110722319A discloses a welding and positioning tool for side beams of a railway carriage frame, and the disclosed complicated positioning tool structure is additionally designed to improve the assembly and positioning accuracy of components such as side beam spring cap cylinders i-3, reduce calibration and mapping work, and reduce labor intensity. Similarly, the process of positioning and welding the wheel axle seat i-2 at the lower end of the inclined plane of the wing root part of the side beam of the weldment can be smoothly implemented only by specially designing a group assembling and positioning tool for the normal assembling and welding of the side beam, wherein the group assembling and positioning tool is disclosed as CN108817797A, and the design and the manufacture of the positioning tool inevitably bring about great increase of the production cost. In the welding and cooling process of the side beam i of the welding part, the side beam i of the welding part is subjected to multidirectional and different-scale distortion deformation due to the influence of stress during welding and cooling, so that the side beam i of the welding part is subjected to various asymmetric structural dimension deviations such as stretching, distortion and side tilting, the welding quality can be just barely ensured by additionally increasing correction and adjustment operations, otherwise, the positioning reference and subsequent machining precision of the whole welding framework are seriously influenced, even symmetrical parts such as an anti-snake-vibration absorber cannot fully play the damping function due to the fact that the symmetrical parts cannot be geometrically symmetrical, the vibration characteristic of the framework is influenced, and the whole service life of the bogie is shortened. However, the adjustment and repair work needs a large amount of surveying and mapping and repeated secondary processing work, and the workload is heavy and complicated, and the efficiency is low.

For the cast side beam shown in fig. 3, the cast side beam j and the integral cross beam body h are integrally cast and molded by a casting mold, so that the processes of size measurement, clamping and positioning and the like in the manufacturing process of the welded side beam i are avoided, but compared with the welded side beam i, the flexibility of elastic deformation of the cast side beam is weakened due to the more rigid mechanical property of cast steel, so that the cast side beam needs to be matched with a more complex two-system damping system comprising a side rolling resistant torsion bar and a snake-shaped resistant damper. In addition, the existing cast side beam, the isosceles trapezoid large interface j-1 of the cast side beam j at the wingtip end, is specially designed for matching the axle box form of the axle box f stacked by multiple layers of rubber tiles e on the isosceles trapezoid, and is not suitable for the wheel set external axle box and the typical primary suspension structure corresponding to the axle box.

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

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

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is as follows:

1) the welding type curb girder tip cantilever that has bird wing form curve structure now, the location process of its weldment wheel axle bed and weldment curb girder spring cap section of thick bamboo all needs the complicated location frock of additional design to realize, still adjust through the correction that additionally increases after the welding is accomplished and repair the operation and just can correct the not stretching of the different yards that appear in the welding cooling process and the direction, the distortion, the structural dimension deviation of multiple asymmetry such as heeling, guarantee welding quality reluctantly, lead to the production processes many and complicated, the frock is made and the manual work is adjusted and is repaired the cost and is high or low.

2) And, because of the design shortcomings of the existing structures, the existing cast side beam for high-speed running trains, which is provided with the isosceles trapezoid large interface at the wing tip end of the cast side beam, is specially designed for the axle box form of the axle box stacked on the isosceles trapezoid by multiple layers of rubber tiles, and is not suitable for the wheel set external axle box and the typical primary suspension structure corresponding to the axle box.

3) In addition, the axle box built-in type one-system suspension structure with the isosceles trapezoid rubber piles on the two sides has the advantages of complex manufacturing process, complex dismounting and maintenance procedures and high manufacturing and maintenance cost, puts higher requirements on the mechanical strength of the isosceles trapezoid large interfaces positioned at the wing tip end parts of the side beams of the castings, and additionally increases the manufacturing and detection cost of the parts.

4) The typical primary suspension means can only be arranged at the two ends of the axle and outside the wheels, and the arrangement of the wheel-external axle box not only increases the damage risk of the axle box, but also increases the transverse width dimension and the turning radius of the whole bogie, which is not beneficial to the improvement of the minimum curve passing capacity of the bogie.

The utility model provides a technical scheme as follows that above-mentioned technical problem took:

the lateral beam end cantilever is characterized by comprising a bird wing-shaped lateral beam cantilever section, a temperature sensor and an annular vibration reduction axle box; the bird wing-shaped side beam cantilever section is formed by connecting an upward tilted side beam section and a horizontal extended side beam section which extends horizontally and outwards;

the annular vibration damping axle box comprises a vibration damping rubber ring, an axle bearing and an axle box positioning and temperature measuring heat conducting sheath, 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 pressed at two ends of an axle, the upper parts of the axle box positioning and temperature measuring heat conducting sheath and the vibration damping rubber ring are respectively provided with a socket for positioning a temperature sensor, and the position of the socket corresponds to a sensor mounting hole on the upper end surface of the horizontal extension section of each side beam; the lower end face of the horizontal extension section of the side beam is provided with a semi-ring clamp type axle box hanging seat, and the annular vibration reduction axle box is coaxially and fixedly connected inside the semi-ring clamp type axle box hanging seat.

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

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

The axle box positioning and temperature measuring heat conducting sheath and the vibration damping rubber ring are integrally formed through a vulcanization process.

The bird wing-shaped side beam cantilever sections are integrally formed through casting technology.

The utility model has the advantages that:

the cantilever of the end part of the side beam with the temperature-measurable axle box breaks through the structural form and the design concept limit of the prior side beam and a series of vibration damping devices thereof through a plurality of innovative layout designs, the main structure of the cantilever section of the bird wing-shaped side beam is integrally formed through a casting process, the cantilever section of the bird wing-shaped side beam is formed by an inclined section of the side beam which is tilted upwards and a horizontal extending section of the side beam which extends horizontally outwards, and the structural form of the integrally formed casting piece ensures that the cantilever section of the bird wing-shaped side beam does not need to additionally correct and adjust and repair the prior welded piece cross beam pipe to correct the structural dimension deviation of various asymmetries such as stretching, distortion, heeling and the like in different dimensions and directions in the welding and cooling process, thereby overcoming the inherent process problem that the heavy and complicated surveying and repairing operation must be carried out during welding of the welded piece side beam group, further increasing the degree, simplifying and optimizing the assembly operation flow between the side, and then make the manufacturing process of bird's wing form curb girder cantilever section become convenient and fast, labour saving and time saving, the precision is high, effectual to can show the mechanical strength who strengthens every horizontal and vertical integrated form framework's major structure, practice thrift manufacturing cost greatly, improve production efficiency.

The sensor mounting hole is arranged on the upper end surface of the horizontal extension section of the side beam, and the lower end surface of the horizontal extension section of the side beam is provided with an annular vibration damping axle box which is coaxially and fixedly connected inside the semi-ring clamp type axle box hanging seat in a bolt connection mode through a semi-annular shell.

The semi-ring clamp type axle box hanging seat of the utility model is arranged at the bottom of the far end of the cantilever section of each bird wing-shaped side beam, and the upper end surface of each semi-ring clamp type axle box hanging seat is provided with a sensor mounting hole; the inner sides of the wheels are arranged in the two annular vibration reduction axle boxes, the two annular vibration reduction axle boxes are coaxially fixedly connected to the two ends of the axle, the vibration reduction rubber rings arranged in the annular vibration reduction axle boxes are coaxially fixedly connected with the outer rings of the axle bearings, the inner rings of the axle bearings are coaxially and pressure-mounted and fixedly connected to the two ends of the axle, the upper portions of the vibration reduction rubber rings of the annular vibration reduction axle boxes are provided with rubber ring blind hole sockets for positioning temperature sensors, the upper portions of the axle box positioning and temperature measurement heat conduction sheaths are provided with shell sockets serving as positioning temperature sensor butt-joint seats, and. The design scheme ensures that the temperature measuring end of the temperature sensor can be inserted and positioned in the blind hole socket of the rubber ring through the sensor mounting hole and the socket of the shell in sequence, thereby getting rid of the blocking effect of the damping rubber ring on the temperature of the axle box, the semi-ring clamp type axle box hanging seat of the utility model becomes a brand new clamp axle-hung wheel pair built-in type axle box which can accurately measure the temperature of the outer side wall of the axle box from the radial direction, the original structural design thoroughly breaks through the problem that the conventional axle box formed by stacking a plurality of layers of rubber tiles on an isosceles trapezoid can only be made into an open structural form, otherwise the temperature can not be accurately measured from the radial direction, and a typical series of suspension devices commonly constructed with a tray axle housing and a series of steel springs must rely on structural contraindications of weldment side beam spring cap cartridges, thereby avoiding the complicated special positioning tool design and manufacture and the fussy use process of the spring cap barrel of the side beam of the butt welding piece. This design is in abandoning to pile up by multilayer rubber tile in isosceles trapezoid's axle box structure outside, still improves and has reduced the appearance and the size of the big interface of isosceles trapezoid of old foundry goods curb girder wingtip tip portion, and then promotes its mechanical structure intensity by a wide margin to make the installation and the temperature measurement of semi-ring clamp formula axle box hanging seat become possible. In addition, the structure form that the semi-ring clamp type axle box lifting seat is arranged inside the inner sides of the two wheels of the axle box is adopted to reduce the damage risk when the axle box is arranged externally, and on the premise of ensuring the installation position and the vibration reduction index of a primary suspension axle box device, the transverse width size and the turning radius of the whole bogie are effectively reduced, so that the curve passing capacity of the bogie is further improved. The split type hoop form that semi-ring form shell adopted bolted connection detains with semi-ring hoop formula axle box hanger bracket and synthesizes into complete ring structure, both be convenient for install and dismantle the maintenance, also avoided welding deformation's adverse effect simultaneously.

In addition, the hoop axle-hung wheel pair built-in axle box taking the annular vibration reduction axle box as the core can also fully release vertical and longitudinal torques generated by the side rolling motion of the vehicle body, effectively eliminate all the vibration such as transverse, longitudinal, vertical, snaking torsion, side rolling and the like generated by the motor and the gear box, and further achieve a more ideal side rolling resistance balance effect, thereby reducing the vibration influence degree of the bogie on the vehicle body to the minimum, enhancing the balance stability and the comfort of the vehicle body, effectively reducing the fatigue loss of the whole structure, greatly prolonging the whole service life of the bogie and the vehicle body, reducing the production cost and creating economic value.

Drawings

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

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

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

FIG. 4 is a schematic perspective view of a side sill end cantilever with a temperature measurable axle housing of the present invention;

FIG. 5 is a schematic view of the side sill end cantilever of the present invention with a temperature measurable axle housing, shown from another perspective;

FIG. 6 is a schematic illustration of an exploded view of an annular vibration-damped axle housing of the present invention;

FIG. 7 is a schematic view, partially in section, of the annular vibration-damped axle housing and temperature sensor of the present invention with the axle bearing and semi-annular housing removed;

FIG. 8 is an exploded view of the annular vibration-damped axle housing of the present invention with the axle bearing and semi-annular housing removed;

FIG. 9 is a schematic view of the assembly relationship between the annular vibration-damping axle housing and the axle and temperature sensor of the present invention;

fig. 10 is a schematic view of the application of the side sill end cantilever with a temperature measurable axle box of the present invention.

Detailed Description

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

As shown in fig. 4 to 9, the side sill end cantilever with a temperature measurable axle box of the present invention includes: the device comprises a bird wing-shaped side beam cantilever section 1, a temperature sensor 2 and an annular damping axle box 3; the bird wing-shaped side beam cantilever section 1 is formed by connecting an upward tilted side beam section 1-1 and a horizontal extended side beam section 1-2 which extends horizontally outwards;

the annular vibration damping axle box 3 comprises a vibration damping rubber ring 3-1, an axle bearing 3-2 and an axle box positioning and temperature measuring heat conducting sheath 3-3, the axle box positioning and temperature measuring heat conducting sheath 3-3 is coaxially and fixedly connected with the outer ring of the axle bearing 3-2, the inner ring of the axle bearing 3-2 is coaxially pressed and fixedly connected with the two ends of an axle d, the upper parts of the axle box positioning and temperature measuring heat conducting sheath 3-3 and the vibration damping rubber ring 3-1 are respectively provided with a socket for positioning the temperature sensor 2, and the position of the socket corresponds to a sensor mounting hole 1-2-1 on the upper end surface of each side beam horizontal extension section 1-2; the lower end face of the horizontal extension section 1-2 of the side beam is provided with a semi-ring clamp type axle box hanging seat 1-3, and the annular vibration damping axle box 3 is coaxially and fixedly connected inside the semi-ring clamp type axle box hanging seat 1-3.

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

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

The axle box positioning and temperature measuring heat conducting sheath 3-3 and the damping rubber ring 3-1 are integrally formed through a vulcanization process.

The bird wing-shaped side beam cantilever section 1 is integrally formed by casting technology.

Use specifically the utility model discloses a during curb girder tip cantilever with measurable temperature axle box, as shown in fig. 10, per two the utility model discloses a curb girder tip cantilever with measurable temperature axle box all each other is for the both ends of controlling of mirror image ground symmetry linked firmly in a curb girder middle section 4 to constitute a complete framework curb girder A jointly by its three.

Claims (5)

1. The cantilever is characterized by comprising a bird wing-shaped cantilever section of the side beam (1), a temperature sensor (2) and an annular damping axle box (3); the bird wing-shaped side beam cantilever section (1) is formed by connecting an upward tilted side beam section (1-1) and a horizontal extended side beam section (1-2) which extends horizontally and outwards;

the annular vibration damping axle box (3) comprises a vibration damping rubber ring (3-1), an axle bearing (3-2) and an axle box positioning and temperature measuring heat conducting sheath (3-3), the axle box positioning and temperature measuring heat conducting sheath (3-3) is coaxially and fixedly connected with the outer ring of the axle bearing (3-2), the inner ring of the axle bearing (3-2) is coaxially and fixedly connected with the two ends of an axle (d) in a press-fitting manner, sockets for positioning the temperature sensor (2) are arranged at the upper parts of the axle box positioning and temperature measuring heat conducting sheath (3-3) and the vibration damping rubber ring (3-1), and the positions of the sockets correspond to sensor mounting holes (1-2-1) on the upper end face of each side beam horizontal extension section (1-2); the lower end face of the horizontal extension section (1-2) of the side beam is provided with a semi-ring clamp type axle box hanging seat (1-3), and the annular vibration reduction axle box (3) is coaxially and fixedly connected inside the semi-ring clamp type axle box hanging seat (1-3).

2. The lateral beam end suspension with a temperature measurable axle box according to claim 1, wherein the center line of the axle box locating and temperature measuring heat conducting sheath (3-3) housing socket (3-3-1) and the rubber ring blind hole socket (3-1-1) of the damping rubber ring (3-1) forms an angle of 60 ° with the horizontal plane.

3. The side sill end suspension with a thermally measurable axle housing of claim 1, the axle box positioning and temperature measuring heat conducting sheath (3-3) and the vibration damping rubber ring (3-1) are respectively of an annular structure formed by buckling two semi-rings, the outer wall of the axle box positioning and temperature measuring heat conducting sheath (3-3) is provided with two heat conducting sheath protrusions (3-3-2) arranged along the circumferential outer side wall, the inner side wall of the vibration damping rubber ring (3-1) is provided with two axle box vibration damping ring clamping grooves (3-1-2) arranged along the circumferential inner wall, each heat conducting sheath protrusion (3-3-2) is embedded into one corresponding axle box vibration damping ring clamping groove (3-1-2), and the axle box positioning and temperature measuring heat conducting sheath (3-3) is completely limited in the vibration damping rubber ring (3-1); the annular vibration reduction axle box (3) is connected and installed below the end part of the cantilever section (1) of the bird wing-shaped side beam through a semi-annular shell (3-4) and a bolt of a semi-ring clamp type axle box hanging seat (1-3).

4. The side sill end suspension with a temperature measurable axlebox according to claim 1 wherein said axlebox locating and temperature measuring thermally conductive jacket (3-3) is integrally formed with said damping rubber ring (3-1) by a vulcanization process.

5. The lateral beam end suspension with thermometric axle box according to claim 2 or 3 or 4, wherein said bird wing-like lateral beam suspension section (1) is integrally formed by casting process.

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