CN114808559A

CN114808559A - Damping type city rail turnout switch

Info

Publication number: CN114808559A
Application number: CN202210542593.9A
Authority: CN
Inventors: 田苗盛; 张奔; 张春雷; 刘道通; 霍新伟; 陈敦昌; 谭大正
Original assignee: China Railway Design Corp
Current assignee: China Railway Design Corp
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-07-29

Abstract

The invention relates to a vibration-damping city rail turnout switch, which comprises a stock rail, a switch rail, a steel rail joint structure and a switch vibration-damping support structure, wherein the stock rail comprises a straight stock rail and a curved stock rail, the switch rail comprises a curved switch rail and a straight switch rail, the curved stock rail and the curved switch rail are used for side strand passage, the straight stock rail and the straight switch rail are used for straight strand passage, the straight stock rail and the curved switch rail are connected through a spacer, the curved stock rail and the straight switch rail are connected through the spacer, the steel rail joint structure is arranged at the joint of adjacent steel rails, the switch vibration-damping support structure is arranged below a running rail of a city rail line, the track gauge change rate in the range of the switch rail is reduced, the running stability of a train in the range of the turnout switch rail is improved, the vibration influence of the train on peripheral buildings is reduced fundamentally, and the vibration-damping support structure adopts a locking structure, meanwhile, the maintenance of later-stage work departments is facilitated.

Description

Damping type city rail turnout switch

Technical Field

The invention relates to the field of traffic engineering, in particular to a vibration reduction type urban rail turnout switch.

Background

The rail transit has the advantages of large capacity, high speed, high punctuality rate, comfort, novelty and the like, has complementarity with the traditional traffic such as high-speed rail, aviation, public transportation and the like, and is a transportation tool with good development prospect. But the construction of rail transit also brings partial environmental pollution to residents along the line. Switches are important subsystems of a track system, and directly influence the safe operation of the track system and even the whole track traffic system. The switches can be divided into different numbers according to different frog angles, including 9 switches, 7 switches, 12 switches and the like. The bigger the number of the turnout number, the larger the straight and side passing speed, and vice versa. At present, the main line in the rail transit generally adopts 9 turnouts, and part of special sections can also adopt 12 turnouts. The No. 9 turnout can be divided into a straight switch point turnout and a curved switch point turnout according to the difference of the switch machines; according to the different materials of the switch tie, the switch tie can be divided into a concrete tie switch and a wood tie switch. At present, a 9-number turnout is usually adopted in a track traffic main line, and in order to meet the specification requirement, the lateral passing speed is not less than 35km/h, and the straight passing speed is not less than 80 km/h. The switch heel end can be elastically bent or articulated by a movable joint. The No. 9 turnout is generally made of concrete sleeper when used on the main track, and the frog part is generally a high manganese steel integral casting frog commonly used with state railway. The points of the switch have a great influence on the running stability of the train due to the difference of the switch rails. The turnout is one of three weak links of a track, the structure of the turnout is particularly complex, and the number of parts is very large, so that the first place is to ensure the safe operation of the turnout. Normally, switches are used in a line as a whole, and the standards of the whole line are unified. However, with the construction of rail transit, it is inevitable to pass through buildings under the line, and sometimes, the turnout is also a normal phenomenon when being arranged near a sensitive point, but at the moment, the turnout is required to not only guide a train to pass through safely, but also avoid the vibration influence on the sensitive buildings along the line. Therefore, the problem of turnout vibration reduction is applied, and vibration reduction type turnouts need to be developed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a vibration reduction type urban rail turnout switch, which reduces the vibration influence generated during the operation of an urban rail train through a multi-layer structure design.

In order to achieve the purpose, the invention provides a vibration-damping city rail turnout switch which comprises a stock rail, a switch rail, a rail joint structure and a switch vibration-damping support structure, wherein the stock rail comprises a straight stock rail and a curved stock rail, the switch rail comprises a curved switch rail and a straight switch rail, the curved stock rail and the curved switch rail are used for side strand passing, the straight stock rail and the straight switch rail are used for straight strand passing, the straight stock rail and the curved switch rail are connected through a spacer iron, the curved switch rail and the straight switch rail are connected through the spacer iron, the rail joint structure is arranged at the joint of adjacent rails, and the switch vibration-damping support structure is arranged below a line running rail of the stock rail.

Preferably, the front ends of the curved switch rail and the straight switch rail are respectively connected with a connecting rod through a pull rod.

Furthermore, the working edge of the straight switch rail is a straight line.

Preferably, the rail joint structure includes joint splint and connecting bolt, the joint splint include flange joint splint and flat joint splint, the flange joint splint set up in the urban rail line rail outside, the flat joint splint set up in urban rail line rail inboard, the flange joint splint pass through connecting bolt with the flat joint splint and are connected.

Preferably, the goat damping bearing structure includes damping type slide plate, two holes damping type bearing structure and three holes damping type bearing structure, damping type slide plate set up in the switch blade tip, two holes damping type bearing structure set up in urban rail circuit rail middle part, three holes damping type bearing structure set up in urban rail circuit goat end.

Further, the damping slide plate comprises a slide plate body, two lower iron base plates with holes, a fastening structure, a locking structure, a damping element, an anchor bolt and an elastic strip, wherein the damping element is arranged between the slide plate body and the two lower iron base plates, the slide plate body, the two lower iron base plates and the damping element are fixed through the fastening structure, the locking structure is arranged at the top end of the fastening structure, the fastening structure is fixed above a city rail line rail switch sleeper through the anchor bolt, and the damping slide plate body is fixedly arranged below a city rail line switch through the elastic strip.

Further, the locking structure 13 is a ribbed cover plate, and the fastening structure 12 and the two-hole lower iron base plate 11 lock the groove with a plate rib through the locking structure 13.

Further, two hole damping type bearing structure include iron backing plate, two hole iron backing plate, fastening structure and damping element under two holes, be provided with damping element in the middle of two hole iron backing plate and two hole iron backing plate on two holes, two hole iron backing plate and damping element pass through fastening structure fixed connection down.

Further, iron backing plate, fastening structure, damping element and three hole down iron backing plates on three holes damping type bearing structure includes three holes, be provided with damping element in the middle of iron backing plate under iron backing plate and the three holes on the three holes, iron backing plate, three holes down iron backing plate pass through fastening structure fixed connection with damping element on the three holes.

Compared with the closest prior art, the invention has the following beneficial effects:

the vibration reduction type supporting structure is arranged below the running rail, so that a low-rigidity elastic foundation is provided for the running rail, and the vibration isolation effect of the train in the range of turnouts is realized; the linear working edge is arranged on the linear switch rail working edge, so that the track gauge change rate in the switch rail range is reduced, and the running stability of the train in the turnout range is improved. And further radically reduces the vibration influence of the train on surrounding buildings. The damping type switch adopts a double-layer nonlinear damper, so that the influence of train vibration on surrounding buildings can be effectively reduced; in addition, the vibration reduction type supporting structure adopts a locking structure, and meanwhile, the maintenance of later-stage work departments is facilitated. The vibration damping type point switch adopts the vibration damping type joint clamping plate, can ensure that a train smoothly passes through a steel rail joint, effectively reduces noise and vibration impact when the train passes through the steel rail, does not change the stress state of a running rail inside a turnout, and can not bring hidden danger to later-stage train operation.

Drawings

FIG. 1 is a perspective view of a vibration damped urban rail turnout junction provided by the present invention;

fig. 2 is a plan view of a linear point rail of a vibration damped urban rail switch provided in accordance with the present invention;

figure 3 is a drawing of a two-hole, double layer nonlinear support member for a vibration damped urban rail switch provided by the present invention;

figure 4 is a drawing of a three-hole, two-layer nonlinear support member of a vibration damped urban rail switch provided by the present invention;

figure 5 is a cross-sectional view of a damping joint jaw of a damping urban rail switch provided in accordance with the present invention;

description of the reference numerals:

1. a straight stock rail; 2. a curved stock rail; 3. a curved switch rail; 4. a linear point rail; 5. spacing iron; 6. a pull rod; 7. a connecting rod; 8. a slide chair plate; 9. iron backing plates are arranged on the two holes; 10. an iron backing plate is arranged on the three holes; 11. two holes are provided with iron base plates; 12. a fastening structure; 13. a locking structure; 14. damping joint cleats, 1401, flange joint cleats, 1402, flat joint cleats; 15. a connecting bolt; 16. a damping element; 17. an anchor bolt; 18. a spring bar; 19. and an iron backing plate is arranged below the three holes.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the invention provides a vibration-damping city rail turnout switch, as shown in figure 1, comprising a stock rail, a switch rail, a rail joint structure and a switch vibration-damping support structure, wherein the stock rail comprises a straight stock rail 1 and a curved stock rail 2, the switch rail comprises a curved switch rail 3 and a straight switch rail 4, the curved stock rail 2 and the curved switch rail 3 are used for side strand passage, the straight stock rail 1 and the straight switch rail 4 are used for straight strand passage, the straight stock rail 1 and the curved switch rail 3 are connected through a spacer iron 5, as shown in figure 2, the curved stock rail 2 and the straight switch rail 4 are connected through a spacer iron 5, the rail joint structure is arranged at the joint of adjacent rails, the switch vibration-damping support structure is arranged below a city rail line running rail, the front ends of the curved switch rail 3 and the straight switch rail 4 are respectively connected with a connecting rod 7 through a pull rod 6, the working edge of the straight switch rail 4 is a straight line, the vibration reduction supporting structure of the switch comprises a vibration reduction type slide plate, a two-hole vibration reduction type supporting structure and a three-hole vibration reduction type supporting structure, wherein the vibration reduction type slide plate is arranged at the end part of the switch rail, the two-hole vibration reduction type supporting structure is arranged in the middle of a steel rail of an urban rail line, as shown in figure 3, the three-hole vibration reduction type supporting structure is arranged at the tail end of the urban rail line switch, the vibration reduction type slide plate comprises a slide plate 8, two-hole lower iron base plates 11, a fastening structure 12, a locking structure 13, a vibration reduction element 16, an anchoring bolt 17 and an elastic strip 18, the vibration reduction element 16 is arranged between the slide plate 8 and the two-hole lower iron base plates 11, the slide plate 8, the two-hole lower iron base plates 11 and the vibration reduction element 16 are fixed through the fastening structure 12, the locking structure 13 is a ribbed cover plate, the fastening structure 12 and the two-hole lower iron base plates 11 lock the groove plate ribs through the locking structure 13, locking structure 13 sets up in fastening structure 12 top, fastening structure 12 is fixed in city rail circuit rail switch sleeper top through anchor bolt 17, damping type slide plate passes through elastic strip 18 fixed the setting in city rail circuit goat below, two hole damping type bearing structure include iron backing plate 9 on two holes, iron backing plate 11, fastening structure 12 and damping element 16 under two holes, be provided with damping element 16 in the middle of iron backing plate 9 on two holes and the iron backing plate 11 under two holes, iron backing plate 9 on two holes, iron backing plate 11 and damping element 16 pass through fastening structure 12 fixed connection under two holes, as shown in figure 4, three hole damping type bearing structure include three holes iron backing plate 10, fastening structure 12, damping element 16 and three holes iron backing plate 19 down, be provided with damping element 16 in the middle of iron backing plate 19 under three holes iron backing plate 10 and three holes, three holes iron backing plate 10 on three holes, The three-hole lower iron backing plate 19 and the shock-absorbing element 16 are fixedly connected through the fastening structure 12, as shown in fig. 5, the rail joint structure includes a joint clamp plate 14 and a connecting bolt 15, the joint clamp plate 14 includes a flange joint clamp plate 1401 and a flat joint clamp plate 1402, the flange joint clamp plate 1401 is arranged on the outer side of the urban rail line rail, the flat joint clamp plate 1402 is arranged on the inner side of the urban rail line rail, and the flange joint clamp plate 1401 and the flat joint clamp plate 1402 are connected through the connecting bolt 15.

In this embodiment, the connection of the spacer 5 is equivalent to the fixed end of the cantilever beam, and at this time, the two switch rails respectively form an elastically bendable system.

In the embodiment, the vibration reduction type turnout is mainly applied to the range of a main line, so that the adopted steel rails are the same as the main line and the heavy steel rails of 60kg/m are adopted. Because the switch adopts the elastic bendable switch point and the switch point is longer in length, two pull rods are needed to ensure that the switch point reaches the designed stroke value under the action of the pulling force of the switch machine. When the switch is in a working state and a train runs a straight strand, the force transmission system moves corresponding to the movement of the curved switch rail and the straight stock rail under the action of the pulling force of the switch, and at the moment, the curved switch rail and the straight stock rail are elastically bendable; when the train runs on a side strand, the force transmission system moves corresponding to the movement of the linear switch rail and the curved stock rail under the action of the pulling force of the point switch, and at the moment, the elastic bendable system of the linear switch rail is put into operation. The elastic bendable system plays a role of elastic hinge, reduces the joints of the steel rail and ensures the stability of the train passing through the switch rail. Because the working edge of the straight switch rail 4 is a straight line, when the train runs a straight strand, the track gauge change in the range of the switch is linear and uniform, and the track gauge change rate reaches a minimum value, the smoothness of the track is improved.

In this embodiment, the vibration damping type turnout switch is provided with the vibration damping joint clamping plate 14, so that when the wheel pair passes through the joint, the joint rail gap is not put into operation, but the upper top surface of the vibration damping joint clamping plate is directly put into operation, the wheel pair is ensured to perfectly pass through the joint, and when the wheel pair crosses the joint range, the wheel pair continues to advance along the working edge of the steel rail. This further reduces the vibration of the rail.

In this embodiment, a vibration damping type city rail turnout switch, the vibration damping type slide plate is mainly applied to the elastically bendable part of the switch rail, the slide plate provides convenience for switching the switch rail, the two-hole vibration damping type support structure is mainly used for supporting the working condition of a single running rail or a smaller support distance between two running rails, the three-hole vibration damping type support structure is mainly used for supporting the working condition of two running rails at the same time, and the three-hole vibration damping type support structure is applied to the working condition of the stock rail when the distance between the working edge of the stock rail and the working edge of the switch rail is 300-460 mm.

In the embodiment, the damping type city rail turnout switch is characterized in that the self locking modes of the damping type supporting structure all adopt locking structures, after the damping type supporting structure is assembled, the fastening structure 12 is not completely locked, the locking structure 13 needs to be arranged on the fastening structure 12, and then the locking structure is fixed on a turnout sleeper through the anchoring bolt 17, so that the later-stage work maintenance is facilitated.

In the embodiment, the damping type urban rail turnout switch is characterized in that the straight stock rail 1 and the curved stock rail 2 are standard 60kg/m steel rails; the curved switch rail 3 and the straight switch rail 4 are made of 60kg/m AT rails; the spacer iron 5 is made of KTH 330; the pull rod 6 and the connecting rod 7 are made of Q235; the material of the vibration reduction type supporting structure slide plate 8, the two-hole upper iron base plate 9, the three-hole upper iron base plate 10 and the two-hole lower iron base plate 11 grade three-hole lower iron base plate 19 is Q235; the fastening structure 12 is made of glass fiber reinforced polyamide 66; the locking structure 13 is made of QT 450; the damping joint clamping plate 14 is made of No. 55 steel; the connecting bolt 15 is made of 20 MnTiB; the damping element 16 is made of natural rubber; the anchoring bolt 17 is made of No. 45 steel; the material of the elastic strip 18 is 60Si2 Mn.

In this embodiment, a damping type city rail turnout switch can be used with a prestressed concrete turnout sleeper in a matching manner, and is mainly used for an integral track bed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims

1. The utility model provides a damping type city rail switch, its characterized in that, includes stock rail, switch, rail joint structure and goat damping bearing structure, the stock rail includes straight stock rail 1 and curved stock rail 2, the switch includes curve switch 3 and straight line switch 4, curved stock rail 2 is used for the side strand with curve switch 3 to pass, straight stock rail 1 is used for the straight strand with straight line switch 4 to pass, be connected through spacer 5 between straight stock rail 1 and the curve switch 3, curved stock rail 2 passes through spacer 5 with straight line switch 4 and is connected, rail joint structure sets up in adjacent rail junction, goat damping bearing structure sets up in city rail line walking rail below.

2. A vibration damping urban rail switch according to claim 1, wherein said curved switch rail 3 and said straight switch rail 4 are connected at their front ends to a connecting rod 7 by means of a tie rod 6, respectively.

3. A vibration damped urban rail switch according to claim 2, wherein said working edge of said rectilinear point rail 4 is rectilinear.

4. A vibration damped urban rail turnout switch according to claim 1, wherein said rail joint configuration comprises a clamp 14 and a tie bolt 15, said clamp 14 comprises a flange clamp 1401 and a flat clamp 1402, said flange clamp 1401 disposed on the outside of an urban rail track rail, said flat clamp 1402 disposed on the inside of an urban rail track rail, said flange clamp 1401 and said flat clamp 1402 connected by a tie bolt 15.

5. A vibration-damped city rail turnout of claim 1 wherein said switch vibration-damped support structure comprises a vibration-damped slide plate disposed at said point rail end, a two-hole vibration-damped support structure disposed at a middle portion of a city rail track, and a three-hole vibration-damped support structure disposed at an end of a city rail track switch.

6. A vibration damping type city rail turnout switch according to claim 5, wherein the vibration damping type slide plate comprises a slide plate 8, two-hole lower iron base plates 11, a fastening structure 12, a locking structure 13, a vibration damping element 16, an anchoring bolt 17 and an elastic strip 18, the vibration damping element 16 is arranged between the slide plate 8 and the two-hole lower iron base plates 11, the slide plate 8, the two-hole lower iron base plates 11 and the vibration damping element 16 are fixed through the fastening structure 12, the locking structure 13 is arranged at the top end of the fastening structure 12, the fastening structure 12 is fixed above a city rail line rail turnout sleeper through the anchoring bolt 17, and the vibration damping type slide plate is fixedly arranged below the city rail line switch through the elastic strip 18.

7. A vibration damping urban railway switch according to claim 6, wherein said locking structure 13 is a ribbed cover plate, and said fastening structure 12 and said two-hole lower iron tie plate 11 are locked by the locking structure 13 with the groove using the plate rib.

8. A vibration damping city rail turnout switch according to claim 5, wherein the two-hole vibration damping support structure comprises a two-hole upper iron pad 9, a two-hole lower iron pad 11, a fastening structure 12 and a vibration damping element 16, a vibration damping element 16 is arranged between the two-hole upper iron pad 9 and the two-hole lower iron pad 11, and the two-hole upper iron pad 9, the two-hole lower iron pad 11 and the vibration damping element 16 are fixedly connected through the fastening structure 12.

9. A vibration damping city rail turnout switch according to claim 5, wherein the three-hole vibration damping support structure comprises a three-hole upper iron pad plate 10, a fastening structure 12, a vibration damping element 16 and a three-hole lower iron pad plate 19, the vibration damping element 16 is arranged between the three-hole upper iron pad plate 10 and the three-hole lower iron pad plate 19, and the three-hole upper iron pad plate 10, the three-hole lower iron pad plate 19 and the vibration damping element 16 are fixedly connected through the fastening structure 12.