Search

CN-224199731-U - Positioning unit and rail fastener

CN224199731UCN 224199731 UCN224199731 UCN 224199731UCN-224199731-U

Abstract

The utility model provides a positioning unit and a steel rail fastener, wherein a through positioning hole is formed in the middle of the positioning unit, and an elastic unit can be arranged by utilizing the height difference between the positioning unit and a steel rail and the depth of the positioning hole, so that the thickness of the elastic unit can be obviously increased in the limited height between a sleeper and the steel rail, the rigidity of the elastic unit is correspondingly reduced, and the fastener has better vibration damping performance. And when the train passes through the steel rail on the steel rail fastener, the elastic unit plays a vertical bearing role, the buckling unit and the positioning unit play a transverse and longitudinal bearing role, so that the effective separation of the vertical bearing and the longitudinal and transverse bearing of the steel rail fastener is creatively realized by arranging the through positioning holes, the force transmission path is optimized, the vertical force basically does not act on the positioning unit, and the problems that the positioning unit generates bending deformation and even breaks due to long-term and frequent bearing of larger vertical force can be avoided, so that the fastener has longer continuous service life and higher reliability.

Inventors

  • LI XIAOXIA

Assignees

  • 浙江依智工程技术有限公司

Dates

Publication Date
20260505
Application Date
20250417

Claims (12)

  1. 1. A positioning unit for constitute the rail fastener that sets up with sleeper and rail jointly with elastic element, withhold the unit, its characterized in that includes: A middle positioning part positioned between the sleeper and the rail for positioning the elastic unit, and Two side edge positioning parts are respectively positioned at two sides of the middle positioning part and are used for positioning the buckling unit, Wherein the middle part of the middle part positioning part is provided with a through positioning hole, the through direction of the positioning hole is vertical to the upper surface of the sleeper, the elastic unit is connected with the sleeper, The width of the locating hole is not smaller than the width of the steel rail.
  2. 2. The positioning unit of claim 1, wherein: The positioning holes are rectangular through holes, the depth of each positioning hole is 12 mm-30 mm, and the length and the width of each positioning hole are 150 mm-170 mm.
  3. 3. The positioning unit of claim 2, wherein: wherein the surface directions of the four inner side walls of the middle positioning part are respectively perpendicular to the length direction and the width direction of the positioning unit, The middle positioning part is also provided with one or more guide grooves extending along the longitudinal direction, which are semi-cylindrical grooves and are arranged on one or more sides of the positioning hole for limiting and guiding the elastic unit with corresponding bulges.
  4. 4. The positioning unit of claim 2, wherein: wherein the difference between the length and the width of the positioning hole is less than 10% of the width, The part of the middle positioning part on two sides of the positioning hole is square column-shaped, the thickness of the middle positioning part is 12 mm-30 mm, and the width of the middle positioning part is 15 mm-20 mm.
  5. 5. The positioning unit of claim 1, wherein: wherein the buckling unit comprises a track gauge block and an e-shaped elastic strip, Each of the side edge positioning portions includes: A spring bar fixing block arranged beside the positioning hole, one side of the spring bar fixing block is provided with a fixing hole matched with the end part of the e-shaped spring bar, and one side of the spring bar fixing block facing the positioning hole is used for supporting the track gauge block, and The elastic strip supporting and positioning block is arranged on one side of the elastic strip fixing block, and the upper end of the elastic strip supporting and positioning block is provided with a supporting and positioning surface matched with the e-shaped elastic strip and used for supporting and positioning the e-shaped elastic strip.
  6. 6. The positioning unit of claim 1, wherein: wherein the buckling unit comprises a track gauge block, omega-shaped elastic strips and elastic strip fixing pieces, Each of the side edge positioning portions includes: The two supporting and positioning columns are used for supporting and positioning two bent parts of the omega-shaped elastic strip, and the upper end of each supporting and positioning column is provided with an arc bottom groove matched with the bent part; Spring strip fixing holes arranged between the two support columns and the positioning holes for installing the spring strip fixing pieces, and And the gauge block supporting plate is arranged between the two supporting columns and the positioning hole, and faces to one side surface of the positioning hole for supporting the gauge block.
  7. 7. The positioning unit of claim 1, wherein: Wherein, middle part location portion and two side location portion an organic whole forms.
  8. 8. A rail fastener, set up with sleeper and rail is supporting, its characterized in that includes: the positioning unit is arranged on the sleeper; An elastic unit disposed between the sleeper and the rail, the rail being carried on the elastic unit, and A pair of buckling units arranged on the positioning unit and used for buckling the steel rail, Wherein the positioning unit is a positioning unit according to any one of claims 1-7, The elastic unit is arranged in the positioning hole of the positioning unit, The pair of buckling units are respectively arranged on the two side edge positioning parts.
  9. 9. A rail fastener as claimed in claim 8 wherein: Wherein the height of the elastic unit corresponds to the height difference between the sleeper and the rail.
  10. 10. A rail fastener as claimed in claim 8, further comprising: an insulating plate arranged between the sleeper and the positioning unit, Wherein the lower end of the elastic unit is in contact with the upper surface of the insulating plate.
  11. 11. A rail fastener as claimed in claim 8, further comprising: one or more first height-adjusting base plates are arranged between the upper ends of the elastic units and the bottom surfaces of the steel rails and used for adjusting the heights of the upper surfaces of the steel rails.
  12. 12. A rail fastener as claimed in claim 8, further comprising: one or more second height-adjusting backing plates are arranged between the positioning units and the sleeper and used for adjusting the height of the upper surface of the steel rail.

Description

Positioning unit and rail fastener Technical Field The utility model belongs to the technical field of rail transit, and particularly relates to a positioning unit and a steel rail fastener. Background In the track structure, the rail fastener is one of the crucial parts, can keep the correct position of the rail on the basis of the rail such as a sleeper and the like and reliably connect the rail and the sleeper, prevent the longitudinal and transverse movement of the rail, provide certain elasticity for the track structure, and slow down the transmission of the vibration of the wheel rail and the accumulation of the residual deformation of the track. Fig. 14 shows a rail fastener which is currently in common use and mainly comprises an insulating buffer pad 1, an iron pad 2, a rail lower pad 3, a spring strip 4 and a gauge block 5 which are arranged on a sleeper, wherein a rail is placed on the rail lower pad 3 and is pressed by the spring strip 4 and the gauge block 5. The insulating cushioning pad 1 and the rail pad 3 are typically rubber elastic pads, and the insulating cushioning pad 1 and the iron pad 2 are provided with corresponding through holes, and are fixed on the sleeper by a pair of spikes 6. In such a structure, although two rubber pads are provided, the insulating cushion pad 1 is pressed by the iron pad 2 and the spikes 6, and thus dynamic elastic deformation cannot be generated when a train passes through in practice, that is, the damping effect cannot be generated, and only the rail pad 3 can be elastically deformed in the vertical direction, thereby achieving a certain damping effect. Due to the fact that the multi-layer plate structure is installed in the limited height between the sleeper and the steel rail, the thickness of the rail lower base plate 3 is thinner, rigidity is high, the elastic strips 4 and the steel rail are preloaded during assembly, dynamic rigidity of the rail lower base plate 3 is higher, vibration reduction effect is limited, and high vibration reduction scene requirements are difficult to meet. At present, although other types of rail fasteners exist, the problem of poor vibration damping effect is common. In addition, the existing rail fasteners have complex structures, a large number of parts, complicated assembly process, long time consumption and inconvenient subsequent maintenance. Disclosure of utility model The utility model aims to solve at least one of the problems, and aims to provide a positioning unit which has better vibration reduction effect, simple structure and easy assembly and maintenance and a steel rail fastener comprising the positioning unit, wherein the utility model adopts the following technical scheme: The utility model provides a positioning unit which is used for forming a rail fastener matched with a sleeper and a rail together with an elastic unit and a buckling unit and has the technical characteristics that the positioning unit comprises a middle positioning part and two side positioning parts, wherein the middle positioning part is positioned between the sleeper and the rail and used for positioning the elastic unit, the two side positioning parts are respectively positioned at two sides of the middle positioning part and used for positioning the buckling unit, the middle part of the middle positioning part is provided with a through positioning hole, the through direction of the central positioning hole is perpendicular to the upper surface of the sleeper, and the width of the central positioning hole is not smaller than that of the rail. The positioning unit provided by the utility model can also have the technical characteristics that the central positioning hole is a rectangular through hole, the depth is 12 mm-30 mm, and the length and the width are 150 mm-170 mm respectively. The positioning unit provided by the utility model can also have the technical characteristics that the surface directions of the four inner side walls of the middle positioning part are respectively perpendicular to the length direction and the width direction of the positioning unit, and the middle positioning part is also provided with one or more guide grooves extending along the longitudinal direction, which are semi-cylindrical grooves and are arranged on one or more sides of the central positioning hole for limiting and guiding the elastic unit with corresponding bulges. The positioning unit provided by the utility model can also have the technical characteristics that the difference between the length and the width of the positioning hole is smaller than 10% of the width, the parts of the middle positioning parts on two sides of the positioning hole are square columns, the thickness of the parts is 12-30 mm, and the width of the parts is 15-20 mm. The positioning unit provided by the utility model can be further characterized by comprising a track gauge block and an e-shaped elastic strip, wherein each side positioning part comprises an elasti