Overall flexible toothed rail turnout

Abstract

The utility model relates to an integral flexible toothed rail turnout. The integral flexible toothed rail turnout is composed of a slide plate, a steel rail, a toothed rail, a T-shaped sleeper, a pi-shaped sleeper, a driving sleeper, a connecting block assembly, a fastener, a driving device and the like. The steel rails on the two sides of the turnout are fixedly connected with the T-shaped sleepers and the pi-shaped sleepers through fasteners or other modes respectively, and the toothed rail is clamped between the sleepers on the left side and the right side. The adjacent sleepers restrain the positions of the rails in the width direction through the connecting block assemblies, bending deformation of the rails in the length direction is released, and therefore the switching force is reduced, and the fatigue life is prolonged. The toothed rail is fixedly connected with the slide plate through a connecting block assembly at the fixed end. The connecting block assembly is composed of two connecting blocks, bolts and nuts and fixed to the two sides of the toothed rail. The driving device is installed at the turnout switch end of the tooth track, so that the sleeper is driven to do reciprocating motion, and turnout switch is achieved. The turnout has the advantages that firstly, the turnout switching force is small, and the fatigue life is long; 2, the structure is simple, and the construction is convenient; and 3, the device can be expanded and applied to railways, urban rail transit and other turnouts.

Description

Technical Field

[0001] The utility model relates to an integral flexible toothed track turnout which can effectively solve the problems of large turnout switching force, large movable rail switching stress and low turnout fatigue life in the prior art, and belongs to the technical field of rail transportation. Background Art

[0002] CN116791413A, named "An integral swing rack rail turnout", the fixed rail row includes a turnout fixing assembly fixedly installed on the turnout sleeper by fasteners, the turnout fixing assembly includes a straight rail, a straight rack, an oblique rail, an oblique rack and a frog, and the frog is located between the straight rack and the oblique rack. The arc dividing line between the turnout swing assembly and the turnout fixing assembly is set before the proximal end surface of the frog, and the proximal end surfaces of the turnout swing assembly and the turnout fixing assembly are respectively located on both sides of the arc dividing line. The slide bed is seated on the frame under the platform, and the top surface of the frame under the platform is provided with a slide groove extending along the line direction, and a strip-shaped slider corresponding to the slide groove is arranged on the bottom surface of the slide bed. The proximal end of the turnout fixing assembly is fixedly connected with the proximal end of the slide bed, and the distal end of the turnout swing assembly is fixedly connected with the distal end of the slide bed. The disadvantages are as follows: the turnout swing assembly of the utility model is of an integral fixed type, the turnout switching force is large, the switching stress of the movable rail is large, and the fatigue life of the turnout is low.

[0003] CN208072102U, name "Front-end movable rack rail turnout switching mechanism", a movable rail between a front basic rail, a second front basic rail and a rear basic rail. A slide bed is arranged under the movable rail, steel sleepers are arranged longitudinally and spaced on the surface of the slide bed, the front part of the slide bed has an arc-shaped guide groove, an arc-shaped slide plate is arranged in the arc-shaped guide groove, and a switch acting on the arc-shaped slide plate is arranged on one side of the slide bed; a pair of steel rails constituting the movable rail and the rack rail located therebetween are fixedly connected to the arc-shaped slide plate and each steel sleeper, and the fixed steel rail and the steel sleeper at the rear end of the rack rail are fixedly connected to the slide bed. Its shortcomings: the turnout swing assembly of the patented technology is an integral fixed type, the turnout switching force is large, the movable steel rail switching stress is large, and the turnout fatigue life is low. Summary of the invention

[0004] Design purpose: To avoid the shortcomings of the background technology, the design of separate bending scheme for rails and rack rails solves the problems of large switching force, large switching stress and low fatigue life of existing turnouts.

[0005] Design scheme: In order to achieve the above design objectives. The utility model has the following structural design: the integral flexible rack rail turnout is composed of a slide bed, rails, rack rails, T-type sleepers, π-type sleepers, drive sleepers, connecting block assemblies, fasteners, drive devices, etc. The rails on both sides of the turnout are fixedly connected to the T-type sleepers and π-type sleepers respectively by fasteners or other means, and the rack rail is clamped in the middle of the sleepers on the left and right sides. The adjacent sleepers are constrained in the width direction of the track by the connecting block assembly to release the bending deformation in the length direction of the track, thereby reducing the switching force and providing fatigue life. The rack rail is fixedly connected to the slide bed through the connecting block assembly at the fixed end. The connecting block assembly consists of two connecting blocks and bolts and nuts, which are fixed on both sides of the rack rail. The drive device is installed at the switching end of the rack rail turnout to make the drive sleeper reciprocate to realize the switch.

[0006] The arrangement of T-type sleepers and π-type sleepers needs to be determined through calculation. When the structural stress meets the requirements, π-type sleepers can be arranged throughout the turnout. When the stress of the rail near the fixed end is large, T-type sleepers can be arranged in the area with large stress to reduce the structural stress.

[0007] When the turnout is fixed, the rack rail and the slide bed are constrained and limited in the length direction of the turnout through the rack rail connecting block assembly to provide driving or braking force for the vehicle.

[0008] The utility model designs T-type sleepers and π-type sleepers to constrain the width distance of the left and right rails and release the displacement in the length direction caused by the different curvatures. Through the structure, the left and right rails and the rack rails can be freely bent, the rails and the rack rails can be bent separately, and the switch force of the turnout can be greatly reduced.

[0009] Technical solution: An integrally flexible rack rail turnout located on a slide bed plate is composed of a fixed section and a flexible section. The π-shaped sleepers and T-shaped sleepers of the fixed section are fixed to the slide bed plate by welding or connected by bolts, and the π-shaped sleepers and T-shaped sleepers of the flexible section can slide on the slide bed plate.

[0010] Compared with the background technology, the utility model has the advantages of small switch switching force and long fatigue life; simple structure and convenient construction; and can be extended to other switch in railways and urban rail transit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall layout structure of the rack track turnout A.

[0012] Figure 2 It is the schematic diagram B of the overall layout structure of the rack track turnout.

[0013] Figure 3It is a schematic diagram of the rack rail turnout structure, in which 1---slide bed plate 2---rail 3---rack rail 4---fastener 5---π-type sleeper 6---T-type sleeper 7---connecting block assembly 8---driving sleeper 9---electric push rod.

[0014] Figure 4 It is a schematic diagram of the structural division of a rack rail turnout, in which 1---slide bed plate 2---rail 3---rack rail 4---fastener 5---π-type sleeper 6---T-type sleeper 7---connecting block assembly 8---driving sleeper 9---electric push rod.

[0015] Figure 5 It is a partial schematic diagram of the rack rail turnout structure - I large sample, in which 3---rack rail 6---T-type sleeper 7-1---connecting block 7-2---bolt 7-3---nut.

[0016] Figure 6 It is a partial schematic diagram of the rack rail turnout structure - BB cross-section diagram, in which 3---rack rail 6---T-type sleeper or π-type sleeper 7-1---connecting block 7-2---bolt 7-3---nut.

[0017] Figure 7 It is a schematic diagram of the π-type sleeper structure, in which 5-1 is the transverse limit plate, 5-2 is the supporting rib plate, and 5-3 is the sleeper plate.

[0018] Figure 8 It is a schematic diagram of the T-type sleeper structure, in which 6-1 is the transverse limit plate, 6-2 is the supporting rib plate, and 6-3 is the sleeper plate.

[0019] Fig. 9 It is a schematic diagram of the connection block structure.

[0020] Fig.10 It is a schematic diagram of the drive sleeper structure.

[0021] Fig.11 It is a schematic diagram of the rack structure. DETAILED DESCRIPTION

[0022] See attached Figure 1-11 , the specific implementation of the utility model is described as follows:

[0023] like Figure 1 and Figure 2 As shown, the rack track switch is located between the left straight strand and the right straight strand and lateral strand. After the rack track switch is switched, the left straight strand and the right lateral strand can be connected.

[0024] like Figure 3As shown, it is the structural layout diagram of the rack rail turnout, and the turnout is composed of a slide bed plate 1, a rail 2, a rack rail 3, a fastener 4, a π-type sleeper 5, a T-type sleeper 6, a connecting block assembly 7, a driving sleeper 8, an electric push rod 9 and other parts.

[0025] like Figure 4 As shown, the turnout is divided into a fixed section and a flexure section. The π-type sleepers 5 and T-type sleepers 6 of the fixed section are fixed by welding or bolting to the slide bed 1, and the π-type sleepers 5 and T-type sleepers 6 of the flexure section can slide on the slide bed 1. The rails 2 and the π-type sleepers 5 and T-type sleepers 6 are fixedly connected by fasteners 4. The arrangement of T-type sleepers and π-type sleepers needs to be determined by calculation. When the structural stress meets the requirements, π-type sleepers can be arranged throughout the turnout. When the stress of the rails near the fixed end is large, T-type sleepers can be arranged in the area with large stress to reduce the structural stress.

[0026] The arrangement of T-type sleepers and π-type sleepers needs to be determined through calculation. When the structural stress meets the requirements, π-type sleepers can be arranged throughout the turnout. When the stress of the rail near the fixed end is large (the fatigue allowable stress amplitude of the rail), T-type sleepers are arranged in the area with large stress to reduce the structural stress. The smaller the width of the T-type sleeper, the smaller the stress of the rail.

[0027] like Figure 5 , Figure 6 As shown, the rack rail is sandwiched between the upper and lower T-shaped sleepers 6 or π-shaped sleepers 5, and the three realize friction contact. A gap is reserved between the left and right T-shaped sleepers 6 or π-shaped sleepers 5, and they are constrained by connecting blocks 7-1, bolts 7-2, and nuts 7-3. During the turnout switching process, the upper and lower T-shaped sleepers 6 or π-shaped sleepers 5 are always in close contact with the rack rail 3 and slide in different directions.

[0028] like Figure 7 As shown, the π-type sleeper is composed of a transverse limit plate 5-1, a support rib plate 5-2, and a sleeper plate 5-3, which can be fixed together by welding or other methods. The support rib plate 5-2 plays a role in supporting the rack rail, and the transverse limit plate 5-1 plays a role in restricting the transverse displacement of the sleeper.

[0029] like Figure 8 As shown, the T-type sleeper is composed of a transverse limit plate 6-1, a support rib plate 6-2, and a sleeper plate 6-3, which can be fixed together by welding or other methods. The support rib plate 6-2 plays a role in supporting the rack rail, and the transverse limit plate 6-1 plays a role in restricting the transverse displacement of the sleeper.

[0030] like Figure 6 , Fig. 9As shown, the connecting block 7-1 is a C-shaped structure. Under the action of the bolts 7-2 and the nuts 7-3, the two connecting blocks 7-1 tightly contact the T-type sleepers 6 or π-type sleepers 5 on the upper and lower sides with the rack rail 3, thereby achieving a constant track gauge and adapting to the different curvatures of the two rails and the rack rail during the bending process, greatly reducing the switching force and improving the fatigue life of the turnout.

[0031] like Fig.10 As shown in the figure, the driving sleeper plays the role of both a general sleeper and a driving role. The driving sleeper is arranged with a turnout driving point, and the driving device moves the driving sleeper to reciprocate to realize the turnout switching. The structural stiffness of the driving sleeper should meet the requirements of the driving point mechanism layout and force, and the driving sleeper can meet the pulling and pushing directions of the driving point.

[0032] Working principle: When the turnout is switched by the driving device, the rails on both sides and the rack in the middle are bent and deformed, but the curvatures of the three deformations are different. If ordinary sleepers are used to fix the three together, the rails on both sides and the rack in the middle will form a frame structure with very large bending rigidity, which will lead to large switching force, large switching stress and low fatigue life.

[0033] Alternative Solution 1: The connection between the rails and T-type sleepers and π-type sleepers can also be fixed by welding, bolting, etc.

[0034] Alternative 2: T-type sleepers and π-type sleepers. Alternatively, all T-type sleepers or all π-type sleepers may be used.

[0035] The turnout can be set with multiple driving points or one machine with multiple points to meet the linear requirements of different turnout switches.

[0036] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of the present utility model, these textual descriptions are only simple textual descriptions of the design concept of the present utility model, rather than limitations on the design concept of the present utility model. Any combination, addition or modification that does not exceed the design concept of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An integrally flexible rack turnout, characterized by: The integrally flexible toothed track switch located on a slide bed plate (1) is composed of a fixed section and a flexible section. The π-shaped rail sleeper (5) or T-shaped rail sleeper (6) of the fixed section is fixed to the slide bed plate (1) by welding or connected by bolts, and the π-shaped rail sleeper (5) or T-shaped rail sleeper (6) of the flexible section can slide on the slide bed plate (1).

2. The integrally flexible rack turnout according to claim 1 is characterized in that: The steel rails (2) on both sides of the integrally flexible rack rail switch are fixedly connected to the T-shaped rail sleepers (6) or the π-shaped rail sleepers (5) through fasteners (4), the rack rail (3) is clamped between the rail sleepers on the left and right sides, the adjacent rail sleepers are constrained in the width direction of the rail through a connecting block assembly (7), and the bending deformation in the length direction of the rail is released. The electric push rod (9) is installed at the switching end of the rack rail switch to drive the rail sleeper (8) to reciprocate and realize the switch switching.

3. The integrally flexible rack turnout according to claim 2 is characterized in that: The rack rail (3) is fixedly connected to the slide bed plate (1) via a connecting block assembly (7) at the fixed end.

4. The integrally flexible rack turnout according to claim 2 is characterized in that: The connecting block assembly (7) is composed of two connecting blocks (7-1), bolts (7-2) and nuts (7-3), and is fixed on both sides of the rack rail (3).

5. The integrally flexible rack turnout according to claim 1 is characterized in that: The connection between the rail and the T-type sleeper or the π-type sleeper is achieved by welding or bolting.

6. The integrally flexible rack turnout according to claim 1, characterized in that: The arrangement of T-type sleepers or π-type sleepers adopts the arrangement of all T-type sleepers or all π-type sleepers.

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