阅读说明：本技术 轨道车辆转向架四悬臂式牵引中心装置 (Four-cantilever type traction center device of railway vehicle bogie ) 是由 刘孝峰 刘艳霞 王易非 于 2021-11-22 设计创作，主要内容包括：轨道车辆转向架四悬臂式牵引中心装置属于轨道车辆转向架牵引中心装置领域,其包括集成弹簧座中心筒机构、四个层叠橡胶弹簧和四个弹簧定位端板,集成弹簧座中心筒机构包括中心筒、两个翼状的双面弹簧座、橡胶硫化套筒。本发明简化了牵引中心安装连接结构,减轻牵引中心整体重量的同时也降低了转向架整体重量,并在降低转向架制造成本的同时有效提高了轨道车辆的减振效果和走行性能。(Four cantilever type traction center devices of rail vehicle bogie belong to rail vehicle bogie traction center device field, and it includes integrated spring holder center section of thick bamboo mechanism, four range upon range of rubber spring and four spring location end plates, and integrated spring holder center section of thick bamboo mechanism includes a center section of thick bamboo, two wing-like two-sided spring holders, rubber vulcanization sleeve. The invention simplifies the installation and connection structure of the traction center, reduces the whole weight of the bogie, reduces the manufacturing cost of the bogie, and effectively improves the vibration reduction effect and the running performance of the railway vehicle.)

1. Four cantilever type traction center devices of rail vehicle bogie, its characterized in that: the traction center device comprises an integrated spring seat center cylinder mechanism (1), four laminated rubber springs (2) and four spring positioning end plates (3), wherein the integrated spring seat center cylinder mechanism (1) comprises a center cylinder (1-1), two wing-shaped double-sided spring seats (1-2) and a rubber vulcanization sleeve (1-3), the center cylinder (1-1) and the two wing-shaped double-sided spring seats (1-2) are integrally formed through casting, the two double-sided spring seats (1-2) are arranged on two sides of the outer side wall of the center cylinder (1-1) on the same diameter in a wing-shaped mirror symmetry mode, and the spring seat end faces of the double-sided spring seats (1-2) are axially parallel to the center cylinder (1-1); the front end surface and the rear end surface of each double-sided spring seat (1-2) are in contact connection with one corresponding laminated rubber spring (2); the other end of each laminated rubber spring (2) is in one-to-one corresponding contact connection with one spring positioning end plate (3); the rubber vulcanization sleeve (1-3) is coaxially pressed in the center cylinder (1-1) through interference fit.

2. The railway vehicle truck four-cantilevered traction center arrangement of claim 1, wherein: the center of the double-sided spring seat (1-2) is provided with a bidirectional common spring mandrel positioning hole (1-2-1) which is communicated with the front and the back, and the axis of the bidirectional common spring mandrel positioning hole (1-2-1) is vertical to the different surface of the axis of the central cylinder (1-1); the spring positioning end plate (3) comprises a convex plate (3-3) and two lug plates (3-2) which are integrally formed, the two lug plates (3-2) are symmetrically distributed on two sides of the convex plate (3-3), the convex plate (3-3) protrudes outwards from the end surface of the lug plate (3-2) to form a boss, the rear end surface of the convex plate (3-3) is inwards recessed on the basis of the rear end surfaces of the two lug plates (3-2) to form an end plate spring positioning groove (3-1), and an end plate spring mandrel insertion hole (3-1-1) is formed in the center of the end plate spring positioning groove (3-1); two ends of the spring positioning end plate (3) are respectively provided with a group of end plate positioning screw holes (3-2-1);

the front end face and the rear end face of the laminated rubber spring (2) are respectively provided with a spring mandrel (2-1), one spring mandrel (2-1) is coaxially inserted with an end plate spring mandrel jack (3-1-1) on a corresponding end plate spring positioning groove (3-1), and the other spring mandrel (2-1) is inserted into a bidirectional common spring mandrel positioning hole (1-2-1) of the spring seat central beam (1); the front end face and the rear end face of each double-sided spring seat (1-2) are in mirror symmetry and are respectively connected with one laminated rubber spring (2) in a butting mode, and two opposite spring mandrels (2-1) of each double-sided spring seat are jointly inserted into the same bidirectional common spring mandrel positioning hole (1-2-1).

3. The railway vehicle truck four-cantilevered traction center arrangement of claim 2, wherein: the outer diameter side wall of the central cylinder (1-1) is further provided with two anti-drop limit stops (1-1-1) in mirror symmetry, and the connecting line of the two anti-drop limit stops is parallel to the axial direction of the bidirectional common spring mandrel positioning hole (1-2-1) and passes through the circle center of the central cylinder (1-1); the distance value between the outer end faces of the two anti-falling limit backstops (1-1-1) is smaller than the width value of the inner rail M of the cross beam, but is larger than the distance value of the anti-falling baffle on the lower port of the inner rail.

4. The railway vehicle truck four-cantilevered traction center arrangement of claim 3, wherein: the initial distance value of the convex surfaces of the outer ends of the two spring positioning end plates (3) of the two laminated rubber springs (2) positioned on the two sides of the same double-sided spring seat (1-2) in a natural extension state is D1, and the length of D1 is more than or equal to 120% of the width of the inner rail M of the cross beam.

5. The railway vehicle truck four-cantilevered traction center arrangement of claim 4, wherein: the inner wall of the rubber vulcanization sleeve (1-3) is a vulcanization sleeve tapered hole (1-3-1), and the curved surface shape of the vulcanization sleeve tapered hole (1-3-1) is completely matched with the curved surface shape of the tapered pin (4).

Technical Field

The invention belongs to the field of traction center devices of railway vehicle bogies, and particularly relates to a four-cantilever type traction center device of a railway vehicle bogie.

Background

The traction center of the railway vehicle bogie is a key component for realizing the connection between the railway train bogie and a steel structure of a vehicle body and transmitting traction force and braking force, and generally comprises a traction center pin A connected with the vehicle body and a traction center beam connected with a bogie frame. As shown in fig. 1 and 2, the conventional towing center pin a includes a tapered pin 4 and a vehicle body underframe connecting seat 5, the tapered pin 4 is used for being inserted into a tapered hole of a rubber vulcanization sleeve in the middle of the towing center beam to enable the tapered pin and the rubber vulcanization sleeve to be coaxially matched, and the vehicle body underframe connecting seat 5 is used for being connected with a vehicle body underframe.

The existing traction center beam is generally connected with two cross beams M of a framework by two groups of traction pull rods C, a vibration damping structure between a traction center pin A and the framework is limited to a rubber vulcanization sleeve in the traction center beam, and traction force and braking force are transmitted by a traction pull rod seat welded on the cross beam of the framework and the corresponding traction pull rod. However, such a damping and buffering method based on a rubber vulcanization sleeve inside a traction center beam cannot sufficiently release the impact of the traction center pin on a frame, and rubber vulcanization nodes at two ends of a traction pull rod belong to vulnerable consumables due to limited volume and structural strength and need to be periodically overhauled and replaced, and a metal rod and a traction pull rod seat of the traction pull rod also need to be periodically subjected to crack detection and overhaul so as to avoid fatigue fracture caused by cracks and ensure driving safety, so that the required overhaul and flaw detection processes increase the overhaul cost and the overhaul period of a vehicle.

Disclosure of Invention

The invention provides a four-cantilever type traction center device of a railway vehicle bogie, aiming at solving the technical problems that the traditional traction center beam usually adopts two groups of traction pull rods to respectively connect the traction center beam with two cross beams of a framework, a vibration damping structure between a traction center pin and the framework is only limited to a rubber vulcanization sleeve inside the traction center beam, the vibration damping buffering mode of the rubber vulcanization sleeve cannot fully release the impact of the traction center pin on the framework, and rubber vulcanization nodes at two ends of the traction pull rods belong to easily damaged consumables due to limited volume and structural strength and need to be periodically overhauled and replaced, so that the vehicle overhaul cost and overhaul period are increased:

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

four cantilever type traction center devices of rail vehicle bogie, its characterized in that: the traction center device comprises an integrated spring seat center cylinder mechanism, four laminated rubber springs and four spring positioning end plates, wherein the integrated spring seat center cylinder mechanism comprises a center cylinder, two wing-shaped double-sided spring seats and a rubber vulcanization sleeve, the center cylinder and the two wing-shaped double-sided spring seats are integrally formed by casting, the two double-sided spring seats are arranged on two sides of the outer side wall of the center cylinder on the same diameter in wing-shaped mirror symmetry, and the spring seat end surfaces of the double-sided spring seats are axially parallel to the center cylinder; the front end surface and the rear end surface of each double-sided spring seat are in contact connection with one corresponding laminated rubber spring one by one; the other end of each laminated rubber spring is in one-to-one corresponding contact connection with one spring positioning end plate; the rubber vulcanization sleeve is coaxially pressed in the center cylinder in an interference fit mode.

The center of the double-sided spring seat is provided with a bidirectional common spring mandrel positioning hole which is penetrated in the front and back direction, and the axis of the bidirectional common spring mandrel positioning hole is vertical to the different surface of the axis of the central cylinder; the spring positioning end plate comprises a convex plate and two lug plates which are integrally formed, the two lug plates are symmetrically distributed on two sides of the convex plate, the convex plate protrudes outwards from the end surface of the lug plate to form a boss, the rear end surface of the convex plate is inwards recessed on the basis of the rear end surfaces of the two lug plates to form an end plate spring positioning groove, and an end plate spring mandrel insertion hole is formed in the center of the end plate spring positioning groove; two ends of the spring positioning end plate are respectively provided with a group of end plate positioning screw holes;

the front end face and the rear end face of the laminated rubber spring are respectively provided with a spring mandrel, one spring mandrel is coaxially inserted into an end plate spring mandrel inserting hole on the corresponding end plate spring positioning groove, and the other spring mandrel is inserted into a bidirectional common spring mandrel positioning hole of the spring seat central beam; the front end face and the rear end face of each double-sided spring seat are respectively in mirror symmetry and are respectively in abutting connection with one laminated rubber spring in one-to-one correspondence, and two opposite spring mandrels of each double-sided spring seat are jointly inserted into the same bidirectional common spring mandrel positioning hole.

The outer diameter side wall of the central cylinder is also provided with two anti-drop limit stops in mirror symmetry, and the connecting line of the two anti-drop limit stops is parallel to the axial direction of the bidirectional common spring mandrel positioning hole and passes through the circle center of the central cylinder; the distance value of the outer end faces of the two anti-falling limit stops is smaller than the width value of the inner stop M of the cross beam, but is larger than the distance value of the anti-falling baffle on the lower port of the inner stop.

The initial distance value of the outer end convex surfaces of the two spring positioning end plates of the two laminated rubber springs positioned on the two sides of the same double-sided spring seat in a natural extension state is D1, and the length of D1 is more than or equal to 120% of the width of the inner rail M of the cross beam.

The inner wall of the rubber vulcanization sleeve is a vulcanization sleeve tapered hole, and the curved surface shape of the vulcanization sleeve tapered hole is completely matched with the curved surface shape of the tapered pin.

The invention has the beneficial effects that: this four cantilever type traction center device, it adopts four layers dish rubber spring to draw in the middle of the central beam flexonics to the framework crossbeam, and this structure has cancelled traditional structures such as the welded traction pull rod support on current traction pull rod and the framework crossbeam to avoid loaded down with trivial details maintenance processes such as the periodic maintenance of relevant structural component and flaw detection, fundamentally has stopped traction pull rod and traction pull rod support and has produced fatigue crack easily and influence driving safety scheduling problem. The structure simplifies the installation and connection structure of the traction center, reduces the whole weight of the traction center and the whole weight of the bogie, and effectively improves the vibration reduction effect and the running performance of the railway vehicle while reducing the manufacturing cost of the bogie.

In addition, the four-cantilever type traction center device of the railway vehicle bogie also has the advantages of simple and practical structure, good durability, low cost, convenience in popularization and the like.

Drawings

Fig. 1 is a schematic perspective view of a conventional traction center pin a;

FIG. 2 is an axial cross-sectional schematic view of FIG. 1;

FIG. 3 is a schematic perspective view of a four-cantilevered draft gear assembly of the railway car truck of the present invention;

FIG. 4 is a schematic illustration of the explosive assembly of FIG. 3;

FIG. 5 is a schematic perspective view of two symmetrically mounted spring retention end plates according to the present invention;

FIG. 6 is a top plan view of the four cantilevered draft gear assembly of the railway car truck of the present invention;

FIG. 7 is a front view of the four cantilevered draft gear assembly of the railway car truck of the present invention;

FIG. 8 is a schematic sectional view A-A of FIG. 7 from a perspective view;

FIG. 9 is a side view of the four cantilevered draft gear of the railway car truck of the present invention;

FIG. 10 is an exploded assembly view of section B-B of FIG. 9 from a perspective view;

FIG. 11 is a perspective view of a cross member inner rail M of a conventional frame;

FIG. 12 is a schematic view of a spring-retaining end plate mounting seat T and its two end plate outer protrusion-surface positioning slots E in a conventional beam inner rail M;

fig. 13 is a schematic view of an application of the four-cantilevered traction center device of the railway vehicle bogie of the present invention installed in the existing inner rail M of the cross member.

Detailed Description

As shown in fig. 3 to 10, the four-cantilever traction center device of the railway vehicle bogie comprises an integrated spring seat center cylinder mechanism 1, four laminated rubber springs 2 and four spring positioning end plates 3, wherein the integrated spring seat center cylinder mechanism 1 comprises a center cylinder 1-1, two wing-shaped double-sided spring seats 1-2 and a rubber vulcanization sleeve 1-3, the center cylinder 1-1 and the two wing-shaped double-sided spring seats 1-2 are integrally formed by casting, the two double-sided spring seats 1-2 are arranged on two sides of the outer side wall of the center cylinder 1-1 on the same diameter in a wing-shaped mirror symmetry mode, and the spring seat end faces of the double-sided spring seats 1-2 are axially parallel to the center cylinder 1-1. The front end face and the rear end face of each double-sided spring seat 1-2 are in contact connection with one laminated rubber spring 2 in one-to-one correspondence. The other end of each laminated rubber spring 2 is in one-to-one corresponding contact connection with one spring positioning end plate 3. The rubber vulcanization sleeve 1-3 is press-fitted into the center cylinder 1-1 by an interference fit.

The center of the double-sided spring seat 1-2 is provided with a bidirectional common spring mandrel positioning hole 1-2-1 which is communicated with the front and the back, and the axis of the bidirectional common spring mandrel positioning hole 1-2-1 is vertical to the different surface of the axis of the central cylinder 1-1. The spring positioning end plate 3 comprises a convex plate 3-3 and two lug plates 3-2 which are integrally formed, the two lug plates 3-2 are symmetrically distributed on two sides of the convex plate 3-3, the convex plate 3-3 protrudes outwards from the end surface of the lug plate 3-2 to form a boss, so that the side view of the spring positioning end plate 3 is similar to the shape of a Chinese character, the rear end surface of the convex plate 3-3 is inwards recessed on the basis of the rear end surfaces of the two lug plates 3-2 to form an end plate spring positioning groove 3-1, and an end plate spring mandrel insertion hole 3-1-1 is arranged in the center of the end plate spring positioning groove 3-1. Two ends of the spring positioning end plate 3 are respectively provided with a group of end plate positioning screw holes 3-2-1.

The front end face and the rear end face of the laminated rubber spring 2 are respectively provided with a spring mandrel 2-1, one spring mandrel 2-1 is coaxially inserted with an end plate spring mandrel inserting hole 3-1-1 on a corresponding end plate spring positioning groove 3-1, and the other spring mandrel 2-1 is inserted into a bidirectional common spring mandrel positioning hole 1-2-1 of the spring seat central beam 1. The front end face and the rear end face of each double-sided spring seat 1-2 are respectively connected with one laminated rubber spring 2 in a butting mode in a mirror symmetry mode, and two opposite spring mandrels 2-1 are jointly inserted into the same bidirectional common spring mandrel positioning hole 1-2-1.

The outer diameter side wall of the central cylinder 1-1 is also provided with two anti-drop limit stops 1-1-1 in mirror symmetry, and the connecting line of the two stops is parallel to the axial direction of the bidirectional common spring mandrel positioning hole 1-2-1 and passes through the circle center of the central cylinder 1-1. The distance value between the outer end faces of the two anti-falling limiting backstops 1-1-1 is smaller than the width value of the inner rail M of the cross beam, but is larger than the distance value of the anti-falling baffle S on the lower port of the inner rail.

The initial distance value of the convex surfaces of the outer ends of the two spring positioning end plates 3 of the two laminated rubber springs 2 positioned on the two sides of the same double-sided spring seat 1-2 in a natural extension state is D1, and the length of D1 is more than or equal to 120% of the width of the inner rail M of the cross beam.

The inner wall of the rubber vulcanization sleeve 1-3 is a vulcanization sleeve taper hole 1-3-1, and the curved surface shape of the vulcanization sleeve taper hole 1-3-1 is completely matched with the curved surface shape of the taper pin 4.

Specifically, when the four-cantilever type traction center device is applied, the laminated rubber spring 2 and the rubber vulcanization sleeves 1-3 are made of the entrusted customized product produced by manufacturers with relevant qualifications such as Liyang City Virginian railway equipment Co.

As shown in fig. 11 to 13, a frame beam assembly of a brand new form matching with the four-cantilever type traction center device of the present invention has a rectangular beam crotch M in the middle of the beam assembly, two opposite inner side walls of the beam crotch M are respectively and radially and symmetrically provided with a spring positioning end plate mounting seat T, and each spring positioning end plate mounting seat T is provided with two end plate outer protruded surface positioning grooves E which are matched with the laminated rubber springs 2 in one-to-one corresponding positions and have a shape and a depth matched with the spring positioning end plates 3. Two inner-gear anti-falling baffles S are symmetrically arranged on the lower end opening of the bottom of the inner wall of the inner crotch M of the crossbeam.

When the four-cantilever type traction center device N is installed in the inner crotch M of the beam of the existing framework, the four-cantilever type traction center device N is integrally compressed by a vertical press machine, so that the numerical value of D1 is smaller than the inherent width value of the inner crotch M of the beam, and then two ends of 4 specially-made double-thread pull rod auxiliary tools are respectively and temporarily connected with the lug plate threaded holes 3-2 bolts of the spring positioning end plates 3, so that the integrally compressed state of the traction center N is ensured to be unchanged.

Then, the four-cantilever type traction center device N is hung in the inner crotch M of the cross beam, each convex plate 3-3 is aligned with the adjacent end plate outer convex surface positioning groove E at the installation position, the special double-thread pull rod auxiliary tool can be detached from the lug plate threaded hole 3-2, and the compression deformation of the laminated rubber spring 2 is released again. The elastic restoring force of the laminated rubber springs 2 continuously and reversely props open the spring positioning end plates 3 at the front end and the rear end of each double-sided spring seat 1-1, so that the end plate outer protruding surface 3-3 of each spring positioning end plate 3 is propped against one corresponding end plate outer protruding surface positioning groove E under the elastic action of the laminated rubber springs 2, the front end surface and the rear end surface of each double-sided spring seat 1-1 are clamped by the corresponding two laminated rubber springs 2 under the elastic action, and the integrated spring seat central cylinder mechanism 1 is elastically suspended and positioned in the beam inner crotch M under the common clamping force action of the four laminated rubber springs 2, and the traction force of the bogie can be transmitted to the vehicle body through the traction central device and the laminated rubber springs 2 thereof.