JPH0676402U - Orbital pad - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a track pad that does not move on the sleepers even if the track repeatedly expands and contracts. [Structure] When fixing the track 16 on the sleeper 18, it is interposed between the tie plate 12 fixed on the upper surface of the sleeper 18 and the steel plate 30 arranged on the lower surface of the track 16 to prevent vibration of the track 16. The restraining rubber track pad 24 is formed with an engaging portion 40 capable of engaging with the tie plate 12 and the steel plate 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a track pad which is used in a track fastening device for fixing a track on a sleeper and which is interposed between the sleeper and the track to suppress vibration of the track.

[0002]

[Prior art]

 A conventional track pad will be described with reference to FIGS. 5, 6, 9, and 10. As an example, a track pad used for a track fastening device using a tie plate will be described. FIG. 5 is a front view showing a configuration of a track fastening device using a tie plate. FIG. 6 is a plan view of FIG. FIG. 9 is a perspective view showing the structure of a conventional track pad used in the track fastening device of FIG. FIG. 10 is a sectional view taken along line CC of FIG.

A general structure of the track fastening device 10 will be described. Numeral 12 is a tie plate, which is formed in a plate shape using concrete, and a pair of convex portions 14 are provided in parallel with each other in the central portion. The interval of each convex portion 14 is formed to have the same length as the width of the bottom portion of the track 16, and each convex portion 14 is parallel to the longitudinal direction of the track 16. The tie plate 12 is fastened and fixed on the sleeper 18 with the first bolt 20 and the first nut 22. Reference numeral 24 is an orbital pad for absorbing the vibration of the orbit 16, which is formed into a plate shape using an elastic material (rubber or the like) and can be laid between the pair of convex portions 14 of the tie plate 12. It has a wide width and a long length. In addition, a plurality of first grooves 26 are formed on the upper surface of the track pad 24 in parallel with the protrusions 14, and a plurality of second grooves 28 are formed on the lower surface so as to alternate with the first grooves 26. The grooves 26 and 28 are provided to prevent deterioration of elasticity (spring constant) of the track pad 24. Reference numeral 30 denotes a steel plate, which is formed to have substantially the same size and shape as the track pad 24. The upper surface of the steel plate 30 is in contact with the lower surface of the track 16 so that the track 16 which expands and contracts due to temperature change can be slid in the track fastening device 10. Reference numeral 32 denotes a first leaf spring, which is a second bolt 36 that can be fixed in a mounting hole 34 provided in the convex portion 14 of the tie plate 12 and a second nut 36 that is screwed with the second bolt 36. Used in conjunction with the tie plate 38 to secure the track 16 on the tie plate 12. The track fastening device 10 having the above configuration fixes the track 16 on the sleeper 18, and the track pad 24 suppresses vibration.

[0004]

[Problems to be solved by the device]

 However, the above conventional track pads have the following problems. When the track expands and contracts due to changes in ambient temperature, the track slides on the steel plate, but the steel plate also moves slightly along with the track. At this time, the orbital pad also moves slightly in the direction of expansion and contraction of the orbit along with the steel plate, so if the orbit repeats expansion and contraction, the orbital pad will shift on the tie plate, that is, on the sleepers, and the effect of vibration absorption will decrease. There are challenges. Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a track pad that does not move on a sleeper even if the track repeatedly expands and contracts.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has the following configuration. That is, in the first configuration, when the track is fixed on the sleeper, it is interposed between the tie plate fixed on the upper surface of the sleeper and the steel plate arranged on the lower surface of the track to prevent the vibration of the track. In a rubber track pad that suppresses the above, an engaging portion that can engage with the tie plate and the steel plate is formed. Further, in the second configuration, when the track is fixed on the sleeper by using the fixing means, the packing for height adjustment of the track arranged on the upper surface of the sleeper and the steel plate arranged on the lower surface of the track. In a rubber orbital pad interposed between and for suppressing the vibration of the orbit, an engaging portion capable of engaging with the fixing means and the steel plate is formed.

[0006]

[Action]

 According to the structure of claim 1, the orbital pad is formed with an engaging portion capable of engaging with the tie plate and the steel plate, and the steel plate and the tie plate disposed on the sleeper together with the orbital pad are provided through the orbital pad. Engage. As a result, the steel plate and the track pad do not move on the tie plate even if the track expands and contracts. Further, in the structure of claim 2, since the orbital pad is formed with the fixing means and the engaging portion capable of engaging with the steel plate, the orbital pad is fixed by the fixing means and the steel plate is fixed by the orbiting pad. It is fixed on the sleepers by means and does not move on the sleepers even if the track expands and contracts.

[0007]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a main part of a track fastening device using a track pad according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is a sectional view of an essential part showing a second embodiment of the engaging part of FIG. FIG. 4 is a sectional view of an essential part showing a third embodiment of the engaging part of FIG. FIG. 7 is a perspective view of a main part of a track fastening device using a track pad according to a second embodiment of the present invention. 8 is a front view of the track fastening device of FIG. 7.

First, a first embodiment will be described with reference to FIGS. 1 to 6 together with a configuration of a track fastening device. Since it is a track pad used for a track fastening device using a tie plate similar to that of the conventional example, the same components as those of the conventional example are designated by the same reference numerals and description thereof will be omitted. A first engaging portion 40 having a square cross section is integrally provided at both ends of the track pad 24 in the longitudinal direction of the track 16. When the orbital pad 24 is interposed between the tie plate 12 and the steel plate 30, the first engaging portion 40 projects from the tie plate 12 and the steel plate 30, and the orbits of the tie plate 12 and the steel plate 30. It engages with both end faces in the length direction of 16.

With the above configuration, even if the track 16 expands and contracts due to temperature change, the first engaging portion 40 of the track pad 24 is fixed on the sleeper 18 by the first bolt 20 and the first nut 22. The track pad 24 does not shift because it engages the tie plate 12. Further, since the first engaging portion 40 of the track pad 24 is also engaged with the steel plate 30, the steel plate 30 will not be displaced. Further, the first engaging portion 40 may have a shape having a circular cross section as shown in FIG. 3, and further, as shown in FIG. 4, a core member internally made of synthetic resin or metal. By embedding 42, the strength against pressure increases, which is even better.

Next, a second embodiment will be described with reference to FIGS. 7 and 8 together with the configuration of the track fastening device. The track pad of the second embodiment is a track pad used for a track fastening device that does not use a tie plate. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. The structure of the track fastening device 44 will be described. A pair of second engaging portions 46 extending upward along the edge portions are provided at both ends in the longitudinal direction of the track 16 of the track pad 24, and also in a direction perpendicular to the longitudinal direction of the track 16. A pair of third engaging portions 48 extending upward along the edge portions are integrally provided at both end portions, respectively. The distance between the engaging portions 46 and 48 is such that the steel plate 30 can be housed between the engaging portions 46 and 48, and the distance between the engaging portions 48 is the bottom portion of the track 16. It has the same length as the width. Further, a notch 52 which is engageable with a tip end portion of a second leaf spring 50 for fixing the track 16 on the sleeper 18 is provided in a central portion of the third engaging portion 48. The second leaf spring 50 is attached to the sleeper 18 by the third bolt 54 to fix the track 16 on the sleeper 18. Reference numeral 56 is a packing for adjusting the height of the track 16 and is formed in substantially the same shape as the bottom shape of the track pad 24.

In the track fastening device 44 using the track pad 24, the front end portion of the second leaf spring 50 presses the track 16 to fix the track 16 on the sleeper 18, and Since the notch 52 is also engaged, the track pad 24 does not shift even if the track 16 expands and contracts due to temperature changes, and the steel plate 30 also engages with the second engaging part 46 of the track pad 24. It doesn't shift.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0013]

[Effect of device]

 When the orbital pad of the first configuration according to the present invention is used, the orbital pad has an engaging portion capable of engaging with the tie plate and the steel plate. Pads do not move on the tie plate. Further, in the track pad according to the present invention, the track pad is provided with the fixing means and the engaging portion capable of engaging with the steel plate. It is fixed on the sleeper by the fixing means via the pad, and it has the remarkable effect that it does not move on the sleeper even if the track expands and contracts.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a track fastening device using a track pad according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of an essential part showing a second embodiment of the engagement part of FIG.

FIG. 4 is a sectional view of an essential part showing a third embodiment of the engagement part of FIG.

FIG. 5 is a front view showing a configuration of a track fastening device using a tie plate.

FIG. 6 is a plan view of FIG.

FIG. 7 is a perspective view of a main part of a track fastening device using a track pad according to a second embodiment of the present invention.

8 is a front view of the track fastening device of FIG. 7. FIG.

9 is a perspective view showing a configuration of a conventional track pad used in the track fastening device of FIG.

10 is a cross-sectional view taken along line CC of FIG.

[Explanation of symbols]

 12 tie plate 16 orbit 18 sleeper 24 orbital pad 30 steel plate 40 engaging part

Claims (2)

[Scope of utility model registration request] 1. A rubber which is interposed between a tie plate fixed to an upper surface of the sleeper and a steel plate arranged on a lower surface of the rail when the track is fixed on the sleeper and which suppresses vibration of the track. An orbital pad made of metal, wherein an engaging portion engageable with the tie plate and the steel plate is formed. 2. When fixing the track on the sleeper by using the fixing means, between the packing for height adjustment of the track arranged on the upper surface of the sleeper and the steel plate arranged on the lower surface of the track. A rubber track pad that is interposed and suppresses vibration of the track, wherein an engaging portion that is engageable with the fixing means and the steel plate is formed.